Attachment 2 - RSR System Specification Document - 101725.pdf

Radar System Replacement (RSR) System Specification Document

U.S. Department of Transportation

Federal Aviation Administration

Radar System Replacement (RSR) System Specification Document (SSD)

FAA-E-XXXX

Revision 2.0

October 10, 2025

Federal Aviation Administration 600 Independence Avenue, SW

Washington, D.C. 20591

FAA-E-XXXX, Rev. DRAFT, October 2, 2025 Page i of 100

Table of Contents

1 SCOPE

1.1 INTRODUCTION

1.2 DESCRIPTION

1.3 CONSTRAINTS

1.4 SYSTEM CONFIGURATIONS

2 APPLICABLE DOCUMENTS

2.1 GENERAL

2.2 GOVERNMENT DOCUMENTS

2.3 NON-GOVERNMENT PUBLICATIONS

2.4 ORDER OF PRECEDENCE

3 REQUIREMENTS

3.1 FUNCTIONAL REQUIREMENTS

3.1.1 NCSR Functional Requirements

3.1.2 CSR Functional Requirements

3.1.3 Common Functional Requirements

3.2 PERFORMANCE REQUIREMENTS

3.2.1 Coverage Volume

3.2.2 Probability of Target Detection (Pd)

3.2.3 False Target Mitigation and Interference Suppression

3.2.4 Accuracy

3.2.5 Resolution

3.2.6 Interrogation Modes

3.2.7 Multiple ATCRBS Reply Processing

3.2.8 Code Reliability and Validation

3.2.9 Altitude Report Reliability and Validation

3.2.10 Merging Performance

3.2.11 Weather

3.2.12 Spectrum and Pulse Repetition Frequencies (PRF)

3.2.13 Target Capacity

3.2.14 Target Overload Processing

3.2.15 Data Timeliness

3.2.16 System Processing Capability

3.2.17 Startup and Recovery

3.3 RELIABILITY, MAINTAINABILITY, AND AVAILABILITY (RMA) REQUIREMENTS

3.3.1 Non-Cooperative RMA Requirements

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3.3.2 Cooperative RMA Requirements

3.3.3 Built-in Test/Fault Isolation (BIT/FI) Requirements

3.4 BEACON PARROT

3.5 INTEGRATION REQUIREMENTS

3.5.1 Physical Integration

3.5.2 Functional Integration

3.5.3 Human-System Integration

3.5.4 Employee Safety and Health

3.5.5 Electrical Safety

3.6 SECURITY AND SAFETY REQUIREMENTS

3.6.1 Information Systems Security (ISS)

3.6.2 System Safety

3.7 QUALITY MANAGEMENT REQUIREMENTS

3.7.1 Quality Assurance

3.7.2 Configuration Management

3.8 TEST AND EVALUATION REQUIREMENTS

3.8.1 Verification

3.8.2 Verification Phases

3.8.3 Verification Methods

APPENDIX A – ACRONYMS

APPENDIX B – GLOSSARY

APPENDIX C – CRITICAL PERFORMANCE REQUIREMENTS

APPENDIX D – VERIFICATION REQUIREMENTS TRACEABILITY MATRIX (VRTM)

List of Figures Figure 1-1 – RSR Context Diagram

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Document Version Control Log

Origination/ Revision Number

Effective Date Sections Affected

Changes Made

DRAFT 08/21/2025 N/A Initial draft

1.0 10/09/2025 N/A Identify Minimum Viable Product (MVP) requirements and Critical Performance Requirements (CPR)

2.0 10/10/2025 ALL Updated BNSRS acronym to RSR

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1 SCOPE

This document defines the requirements for the Radar System Replacement (RSR) that the Federal Aviation Administration (FAA) will procure as part of the national airspace surveillance upgrade under the Brand New Air Traffic Control System (BNATCS) initiative. The scope of this specification includes the functional, performance, and interface requirements for replacing legacy non-cooperative and cooperative surveillance radar systems currently deployed across the National Airspace System (NAS). The SRS will provide enhanced aircraft detection, tracking, and classification capabilities, ensuring compliance with current and emerging air traffic management standards. The system shall support cooperative and non-cooperative target surveillance, integrate with existing ATC infrastructure, and interface with Mode S, ADS-B, and legacy ATCRBS transponders as required.

1.1 Introduction

The FAA operates and maintains several surveillance radar systems that support both terminal and en route air traffic control operations across the National Airspace System (NAS). The terminal environment is generally defined as zero to 60 nautical miles (nm) from the airport reference point and from the surface to 24,000 feet (ft) in elevation. In contrast, the en route environment typically spans from 24,000 ft to 60,000 ft and covers broader geographic regions between terminal airspaces.

Primary (non-cooperative) aircraft surveillance from these radars, the Airport Surveillance Radar (ASR) models 8, 9 and 11, is based on reflections from an airframe and does not require any equipment on-board the aircraft. Conversely, Cooperative Surveillance Radars (CSR) interrogate transponder equipped aircraft through an antenna, mounted above the primary radar’s sail antenna to obtain International Civil Aviation Organization (ICAO) address, aircraft identification (Mode 3/A), and Aircraft Altitude (Mode C) information from the transponder to generate beacon target reports. The surveillance data, including aircraft range and azimuth, generated by the ASRs are used to reinforce beacon target reports generated by the collocated CSR. The final output of the radar system includes reinforced target reports, Secondary Surveillance Radar (SSR) only Target Reports and Primary Surveillance Radar (PSR) only target reports that are delivered to FAA automation systems.

The FAA currently operates independent baselines of non-cooperative and cooperative surveillance radars in the terminal domain and these systems are reaching, or have already reached, the end of their service life and require technology upgrades or replacement to maintain NAS surveillance capabilities. The Airport Surveillance Radar – Model 8 (ASR-8) and Air Traffic Control Beacon Interrogator - Model 5 (ATCBI-5) were first deployed in 1975, ASR-9 in 1985, legacy Mode S in 1989, ATCBI-6 in 2002 and ASR-11 in 2003. The legacy Mode S was first deployed in

1.2 Description

Between 1975 and 2005, the FAA procured three Non-Cooperative Surveillance Radar (NCSR) systems and four Cooperative Surveillance Radar (CSR) systems that have already reached, or will reach, the end of their service life and will need technology upgrades or replacement to maintain NAS surveillance capabilities.

Figure 1-1 shows the high-level context diagram for RSR.

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Figure 1-1 – RSR Context Diagram

RSR will address modern data communications requirements, cybersecurity requirements and changes to the NAS such as the emergence of wind turbine clutter that were not present when the legacy systems were procured. RSR will address the technology upgrades to address all of the shortfalls that are needed on the legacy systems and provide a surveillance capability to the NAS for the next 20+ years.

1.3 Constraints

The following constraints are associated with the procurement of a new system:

1. NCSR is not required to detect or track small radar cross section aircraft such as Unmanned Aircraft System (UAS).

2. CSR is required to detect and track aircraft that are equipped with ADS-B, Mode S and ATCRBS transponders.

3. Upgrades to current infrastructure such as power, ventilation, air conditioning, and communications may be needed for RSR.

5. RSR will be fully compatible with all aspects of the NAS and will not interfere with or cause degradation to the NAS.

6. RSR will result in no negative impacts and no additional requirements for NAS systems relying on its data.

The implementation of the RSR will require coordination among the radar sites scheduled to receive new equipment and the various automation sites they feed.

To minimize interruptions in service to the greatest extent practicable during installation and Site Acceptance Testing (SAT), the RSR and the legacy ASR systems will need to run alternately with a switch for the active interrogator. Additional temporary space at the radar sites to accommodate

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1.4 System Configurations

The design of the RSR will accommodate integration with and operation in each of the following configurations:

• RSR – A configuration that includes both non-cooperative and cooperative surveillance systems. It enables integrated tracking of both cooperative and non-cooperative aircraft and supports reinforcement of target data across systems.

• RSR-NCSR Only - A configuration that provides non-cooperative surveillance capabilities using only a primary radar sensor. The system detects aircraft by transmitting electromagnetic energy and receiving reflected signals from the aircraft.

• RSR-CSR Only - A configuration that provides cooperative surveillance capabilities using only a secondary surveillance radar system. The radar interrogates aircraft transponders to retrieve identity and altitude information.

Requirements defined in this specification are allocated to one or more RSR configurations: Non- Cooperative Surveillance Radar only (RSR-NCSR), Cooperative Surveillance Radar only (RSR- CSR), and Combined NCSR/CSR (RSR).

Unless explicitly excluded, all requirements assigned to RSR-NCSR or RSR-CSR also apply to the RSR configuration.

Additionally, any requirement assigned to the RSR configuration is also apply to both RSR- NCSR and RSR-CSR configurations, unless specifically excluded.

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2 APPLICABLE DOCUMENTS

2.1 General

The documents referenced in Section 2 contain the references from requirements in Section 3. Any documents referenced outside of Section 3 are not listed in Section 2 and are for additional information. While every effort has been made to ensure the completeness of this list, users are cautioned they are required to meet all specifications cited in Section 3.

a) Requests for security-related documents should be addressed to the Contracting Officer (CO). Requests should fully identify material desired and cite the solicitation or contract number.

b) Military Standards and Specifications can be ordered from the Department of Defense Single Stock Point (DODSSP), Building 4/Section D, 700 Robbins Avenue, Philadelphia, PA 19111-5098.

c) Copies of EUROCONTROL documents may be obtained through the web site:

http://www.eurocontrol.int/

2.2 Government Documents

Ref No Name/Number Description

1. 29 CFR 1910 Occupational Safety and Health Standards (General Industry).

2. 29 CFR 1910 Subpart D Occupational Safety and Health Standards: Walking- Working Surfaces

3. 29 CFR 1910.145 Occupational Safety and Health Standards:

Specifications for Accident Prevention Signs and Tags

4. 47 CFR Part 300 Manual of Regulations and Procedures for Federal Radio Frequency Management

5. DoD AIMS 03-1000B Technical Standard for the ATCRBS/IFF/Mark XIIA Electronic Identification System and Military Implementation Of Mode S

6. FAA JO 1370.114

Implementation of Federal Aviation Administration (FAA) Telecommunications Infrastructure (FTI) Services and Information Security Requirements in the

NAS

7. FAA JO 1370.117 National Airspace System (NAS) Internet Protocol (IP) Addressing Policy

8. FAA Order 1370.121B FAA Information Security and Privacy Program & Policy

9. FAA Order 6050.19G Radio Spectrum Planning http://www.eurocontrol.int/

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Ref No Name/Number Description

10. FAA Order 6050.32B Spectrum Management Regulation and Procedures Manual

11. FAA Order 6950.2F Electrical Power Policy Implementation at National Airspace Facilities

12. FAA-E-2660 ATCRBS Open Array Antenna (Five-Foot)

13. FAA-E-2751 Product Specification FAA-E-2751 for Mode S Antenna Group, En Route Array, July 17, 1989

14. FAA-G-2100J Electronic Equipment General Requirements, May 9,

15. FAA-STD-019G

U.S. Department of Transportation, Federal Aviation Administration, Standard, Lightning and Surge Protection, Grounding, Bonding and Shielding Requirements for Facilities and Electronic Equipment, October 2017

16. HF-STD-001B Human Factors Design Standard

17. HF-STD-003A Alarms and Alerts in the Technical Operations Environment.

18.

NAS-IC-34203403 Interface Control Document for the Mode Select Beacon

System (Mode S) to Azimuth Pulse Generator (APG) Units

19. NAS-ICD-11013400

Surveillance to ATC Automation System All-Purpose Structured Eurocontrol Surveillance Information Exchange (ASTERIX) Interface Control Document (ICD) Developed by the SIM Program, January 14, 2022 Rev 1

20. NAS-IRD-11013400

Surveillance to ATC Automation System All Purpose Structured Eurocontrol Surveillance Information Exchange (ASTERIX) Interface Requirements Document (IRD), Developed by Surveillance Interface Modernization (SIM) Program, May 22, 2017 Rev –

21. NAS–IR–15014306

Interface Requirements Document National Airspace System Cyber Management System (NCMS) to NAS Systems All Operating Systems

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Ref No Name/Number Description

22. NAS–IR–15014306

Interface Requirements Document National Airspace System Cyber Management System (NCMS) to NAS Systems All Operating Systems

23. NAS-IR-34243425

Mode S Beacon Replacement System (MSBRS) to Common Air Route Surveillance Radar (CARSR) Interface Requirements Document (IRD), Revision 0.5, March 02, 2022

24.

NAS-MD-793 Remote Maintenance Monitoring System Functional

Requirements for the Remote Monitoring Subsystem, NAS-MD-793, February 1986

25. OMB M-06-16 Protecting of Sensitive Agency Information

26. VVSPT-A2-PDD-013 FAA William J. Hughes Technical Center Test and Evaluation Handbook, December 18, 2020, Version 5.0

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2.3 Non-Government Publications

Ref No Number Description

1. ANSI Z535.4-2023 Product Safety Signs and Labels

2.

COMSAT RSI Technical Products Instruction Book 1003-006

Instruction Book High Gain Open Planar Array Assembly Model Number 1325-32

3.

EUROCONTROL

ASTERIX Category 017 Specification

(SUR.ET2.ST03.3111-

SPC-02-00)

EUROCONTROL STANDARD DOCUMENT FOR

SURVEILLANCE DATA EXCHANGE Part 5:

Category 017 Mode S Surveillance Coordination Function Messages, Edition 1.3, Jan 2009, Including Appendix A.

4.

EUROCONTROL

ASTERIX Category 253 Specification

ASTERIX CATEGORY 253 SPECIFICATION, Issue 11.0, 8 February 2021

5.

ICAO Annex 10 Volume III Annex 10 to the Convention on International Civil

Aviation. Aeronautical Telecommunications Volume III Communication Systems

6. ICAO Annex 10 Volume IV Annex 10 to the Convention on International Civil Aviation. Aeronautical Telecommunications Volume IV Surveillance and Collision Avoidance System

7. IEEE 1588-2008

IEEE Standard for a Precision Clock Synchronization Protocol for Networked Measurement and Control Systems

8. NFPA 101 Life Safety Code, 2024 Edition

9. RTCA/DO-144A

Minimum Operational Performance Standards for Air Traffic Control Radar Beacon System (ATCRBS) Airborne Equipment

10. RTCA/DO-181E

Minimum Operational Performance Standards for Air Traffic Control Radar Beacon System/Mode Select (ATCRBS/Mode S) Airborne Equipment

11. RTCA/DO-260B

Minimum Operational Performance Standards for 1090 MHz Extended Squitter Automatic Dependent Surveillance – Broadcast (ADS-B) and Traffic Information Services – Broadcast (TIS-B)

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Ref No Number Description

12.

SUR/MODES/EMS/ICD-

European Mode S Station Intersite Surveillance Coordination Interface Control Document, SUR/MODES/EMS/ICD-01, 2.06, 9 May 2005

13.

SUR/MODES/EMS/ICD-

European Mode S Station Coverage Map Interface Control Document, SUR/MODES/EMS/ICD-03, 9 May 2005, version 1.16

14. SUR/MODES/EMS/SPE-

European Mode S Station Functional Specification SUR/MODES/EMS/SPE-01, Edition 3.11, 9 May 2005

2.4 Order of Precedence

The above documents form a part of this System Specification to the extent specified herein. In the event of conflict between the documents referenced herein and the contents of this System Specification, this System Specification will be considered the superseding requirement.

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3 REQUIREMENTS

This document uses ‘must’ as the mandatory imperative in requirement statements. Use of ‘must’ as the mandatory imperative complies with Federal Plain Language Guidelines, March 2011 Revision 1, May 2011 and the FAA Plain Language Toolkit accessible from FAA Plain Language Website: https://www.plainlanguage.gov/.

Within the requirements of this specification, when the words “AND” and “OR” appear in capital letters, they are being used as logical operators defined as follows:

• AND – all the conditions of the requirement must be mandatory

• OR – one or more of the conditions in the requirement must be mandatory. Additionally, all permutations must be exercised

Within the requirements of the RSR specification, when an element of a document is referenced such as a Subsection, Section, Paragraph, or Chapter, all subordinate Subsections, Sections, Paragraphs, or Chapters to the referenced element are applicable.

This document also defines a subset of requirements that are considered the Minimum Viable Product (MVP) to specify the essential functionality and performance the system must implement to be considered viable for initial release into the NAS. A subset of MVP requirements, referred to as Critical Performance Requirements (CPRs), are defined to capture the minimum acceptable performance necessary for operational deployment in the NAS.

3.1 Functional Requirements

This section provides the functional requirements for the RSR.

3.1.1 NCSR Functional Requirements

Detect Aircraft [RSR-SPEC-SR0001] The RSR-NCSR system must provide target coverage throughout the Service Volume.

[RSR-SPEC-SR0002] The RSR-NCSR system must detect Aircraft Types of varying sizes AND radar cross sections within the Service Volume.

[RSR-SPEC-SR0003] The RSR-NCSR system must operate with the legacy terminal ASR-8 non-cooperative surveillance antenna. [MVP] [RSR-SPEC-SR0004] The RSR-NCSR system must operate with the legacy terminal ASR-9 non-cooperative surveillance antenna. [MVP] [RSR-SPEC-SR0005] The RSR-NCSR system must operate with the legacy terminal ASR-11 non-cooperative surveillance antenna. [MVP]

[RSR-SPEC-SR0006] The RSR-NCSR system must transmit Electromagnetic energy to detect targets in the Service Volume.

[RSR-SPEC-SR0007] The RSR-NCSR system must receive reflected energy returns from targets.

https://www.plainlanguage.gov/

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[RSR-SPEC-SR0008] The RSR-NCSR system must process received reflected Electromagnetic (EM) energy.

[RSR-SPEC-SR0009] The RSR-NCSR system must identify received reflected energy applicable to Aircraft Types.

[RSR-SPEC-SR0010] The RSR-NCSR system must identify received reflected energy applicable to non-aircraft targets.

[RSR-SPEC-SR0011] The RSR-NCSR system must calculate the horizontal position of targets from the received reflected energy returns.

[RSR-SPEC-SR0012] The RSR-NCSR system must determine the quality of the received reflected energy returns to establish the likelihood of it being from an Aircraft Types.

[RSR-SPEC-SR0013] The RSR-NCSR system must compile a search target report.

[RSR-SPEC-SR0014] The RSR-NCSR search target report must include horizontal position.

[RSR-SPEC-SR0015] The RSR-NCSR search target report must include quality information.

[RSR-SPEC-SR0016] The RSR-NCSR system must distinguish moving target returns from stationary clutter returns.

[RSR-SPEC-SR0017] The RSR-NCSR system must mitigate false targets.

[RSR-SPEC-SR0018] The RSR-NCSR system must filter target returns that are from Non-Aircraft Sources.

[RSR-SPEC-SR0019] The RSR-NCSR system must operate in the NAS clutter environments.

[MVP]

[RSR-SPEC-SR0020] The RSR-NCSR system must automatically adjust signal processing to adapt to the site-specific clutter environment to ensure the performance requirements are continually met.

[RSR-SPEC-SR0021] The RSR-NCSR must have processing to eliminate false targets generated by Reflectors.

Ingest Cooperative Surveillance Data [RSR-SPEC-SR0022] The RSR-NCSR must Ingest Cooperative Surveillance Data.

[RSR-SPEC-SR0023] The RSR-NCSR system must Ingest cooperative targets as output from Automatic Dependent Surveillance-Broadcast (ADS-B).

[RSR-SPEC-SR0024] The RSR-NCSR system must Ingest cooperative targets as output from Wide Area Multilateration (WAM).

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[RSR-SPEC-SR0025] The RSR-NCSR system must be site adaptable to accept ADS-B OR WAM Cooperative Target for purposes of assisting in PSR false plot/track management.

Detect Weather (if necessary) [RSR-SPEC-SR0026] The RSR-NCSR system must provide weather coverage throughout the Service Volume. [MVP] [RSR-SPEC-SR0027] The RSR-NCSR system must detect 6-level weather within the Service Volume.

[RSR-SPEC-SR0028] The RSR-NCSR system must transmit EM energy to detect precipitation in the Service Volume.

[RSR-SPEC-SR0029] The RSR-NCSR system must receive reflected energy returns from weather.

[RSR-SPEC-SR0030] The RSR-NCSR system must process received weather reflected energy.

[RSR-SPEC-SR0031] The RSR-NCSR system must identify received reflected energy applicable to precipitation.

[RSR-SPEC-SR0032] The RSR-NCSR system must identify received reflected energy applicable to non-weather returns.

[RSR-SPEC-SR0033] The RSR-NCSR system must provide mechanisms to control false weather.

[RSR-SPEC-SR0034] The RSR-NCSR system must filter returns that are from Non-Weather Sources. [MVP]

[RSR-SPEC-SR0035] The RSR-NCSR system must calculate the intensity of Six Level Weather returns in reference to the Video Integrator and Processor (VIP) Level.

[RSR-SPEC-SR0036] The RSR-NCSR system must calculate the horizontal position of weather data from the time and location of the received reflected energy returns.

[RSR-SPEC-SR0037] The RSR-NCSR system must determine the movement of precipitation particulates based on reflected energy returns.

[RSR-SPEC-SR0038] The RSR-NCSR system must determine the Quality of the received reflected energy returns to establish the Likelihood of it being from precipitation.

[RSR-SPEC-SR0039] The RSR-NCSR system must output Weather Reports containing a full weather picture within 4 scans of completion of a weather integration cycle.

[RSR-SPEC-SR0040] RSR-NCSR weather reports must contain horizontal position AND reflective intensity.

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3.1.2 CSR Functional Requirements

Detect Transponder Equipped Aircraft [RSR-SPEC-SR0041] The RSR-CSR must operate with the legacy terminal secondary surveillance antenna in accordance with FAA-E-2660. [MVP] [RSR-SPEC-SR0042] The RSR-CSR must operate with the front looking array of the legacy en route secondary surveillance antenna in accordance with FAA-E-2751. [MVP] [RSR-SPEC-SR0043] The RSR-CSR must operate with the legacy 6’ High Gain Open Planar Array Secondary Surveillance Antenna Model Number 1325-32 in accordance with COMSAT RSI Technical Products Instruction Book 1003-006. [MVP] [RSR-SPEC-SR0044] The RSR-CSR must utilize a monopulse receiver for calculating off-boresight azimuth estimates throughout the entire 3dB vertical antenna beamwidth for targets with a slant range greater than 0.5 nmi.

[RSR-SPEC-SR0045] The RSR-CSR must utilize a monopulse receiver for calculating off-boresight azimuth estimates throughout the entire 3dB horizontal antenna beamwidth for targets with a slant range greater than 0.5 nmi.

[RSR-SPEC-SR0046] The enabling of RSR-CSR transmitter blanking must be site adaptable.

[RSR-SPEC-SR0047] The RSR-CSR transmitter blanking start azimuth for each azimuth region must be site adaptable.

[RSR-SPEC-SR0048] The RSR-CSR transmitter blanking stop azimuth for each azimuth region must be site adaptable.

[RSR-SPEC-SR0049] The RSR-CSR transmitter blanking must prevent interrogations from the transmitter in up to 32 azimuth regions.

[RSR-SPEC-SR0050] The RSR-CSR transmitter blanking azimuth regions must be site adaptable in minimum increments of one degree.

[RSR-SPEC-SR0051] The RSR-CSR must interrogate transponder-equipped aircraft on the Sigma Channel of the antenna.

[RSR-SPEC-SR0052] The RSR-CSR must interrogate transponder equipped aircraft using the frequency 1030.00 ± 0.01 MHz per ICAO Annex 10 Volume IV Section 3.1.2.1.1.

[RSR-SPEC-SR0053] The RSR-CSR must transmit using the Omega Channel of the antenna for the suppression of transponder-equipped aircraft in the antenna side lobes.

[RSR-SPEC-SR0054] The RSR-CSR must use a site adaptable mode interlace pattern with Mode S All-Call, Mode S Roll-Call, Mode 3/A, Mode C, Mode 3/A-only all-call, Mode C-only all-call, Military Mode 2, OR supermode interrogations.

[RSR-SPEC-SR0055] Each period in the RSR-CSR mode interlace pattern must be site adaptable for interrogation type.

[RSR-SPEC-SR0056] Each period in the RSR-CSR mode interlace pattern must be site adaptable for duration.

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[RSR-SPEC-SR0057] The RSR-CSR supermode interlace period must combine a Mode S All-Call interrogation with either Mode 3/A, Mode C, OR Military Mode 2. [MVP]

3.1.2.1.1.1 Interrogate ATCRBS Aircraft

[RSR-SPEC-SR0058] The RSR-CSR must interrogate transponders for Mode 3/A replies using Mode 3/A, in accordance with ICAO Annex 10 Volume IV Section 3.1.1.4.

[RSR-SPEC-SR0059] The RSR-CSR must interrogate transponders for Mode C replies using Mode C, in accordance with ICAO Annex 10 Volume IV Section 3.1.1.4.

[RSR-SPEC-SR0060] The RSR-CSR Pulse Repetition Frequency for ATCRBS/All-Call interrogations must utilize site adaptable stagger techniques.

[RSR-SPEC-SR0061] The RSR-CSR must interrogate transponders for Mode 3/A replies using Mode 3/A-only all-call, in accordance with ICAO Annex 10 Volume IV Section 3.1.2.1.5.1.2.

[RSR-SPEC-SR0062] The RSR-CSR must interrogate transponders for Mode C replies using Mode C-only all-call, in accordance with ICAO Annex 10 Volume IV Section 3.1.2.1.5.1.2.

[RSR-SPEC-SR0063] The RSR-CSR Pulse Repetition Frequency pseudo random stagger limits for ATCRBS/All-Call interrogations must be site adaptable from 0% up to 10% in 0.5% minimum increments. [MVP] [RSR-SPEC-SR0064] The RSR-CSR Pulse Repetition Frequency stagger must be site adaptable as fixed sequence OR pseudo random stagger. [MVP] [RSR-SPEC-SR0065] The RSR-CSR must interrogate Military Mode 2 transponders in accordance with DoD AIMS 03-1000B Section 4.2.1. [MVP]

3.1.2.1.1.2 Interrogate Mode S Aircraft

[RSR-SPEC-SR0066] The RSR-CSR must interrogate Mode S transponders in accordance with ICAO Annex 10, Volume IV Section 3.1.2.1.

[RSR-SPEC-SR0067] The RSR-CSR Mode S All-Call Uplink Format 11 interrogations must be in accordance with ICAO Annex 10 Volume IV Section 3.1.2.5.2.1.

[RSR-SPEC-SR0068] The RSR-CSR Mode S Roll-Call Uplink Format 4 interrogations must be in accordance with ICAO Annex 10 Volume IV Section 3.1.2.6.1.

[RSR-SPEC-SR0069] The RSR-CSR Mode S Roll-Call Uplink Format 5 interrogations must be in accordance with ICAO Annex 10 Volume IV Section 3.1.2.6.3.

[RSR-SPEC-SR0070] The RSR-CSR Mode S Roll-Call Uplink Format 20 interrogations must be in accordance with ICAO Annex 10 Volume IV Section 3.1.2.6.2.

[RSR-SPEC-SR0071] The RSR-CSR Mode S Roll-Call Uplink Format 21 interrogations must be in accordance with ICAO Annex 10 Volume IV Section 3.1.2.6.4.

[RSR-SPEC-SR0072] The RSR-CSR must schedule Mode S Roll-Call Uplink Format 4 interrogations based on predicted aircraft positions.

[RSR-SPEC-SR0073] The RSR-CSR must schedule Mode S Roll-Call Uplink Format 5 interrogations based on predicted aircraft positions.

[RSR-SPEC-SR0074] The RSR-CSR must schedule Mode S Roll-Call Uplink Format 20 interrogations based on predicted aircraft positions.

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[RSR-SPEC-SR0075] The RSR-CSR must schedule Mode S Roll-Call Uplink Format 21 interrogations based on predicted aircraft positions.

[RSR-SPEC-SR0076] The RSR-CSR priority for surveillance Roll-Call interrogations must be site adaptable.

[RSR-SPEC-SR0077] The RSR-CSR must interrogate Mode S transponders to support up to Level 2 functions as defined in ICAO Annex 10 Volume IV, Section 2.1.5.1.2.

[RSR-SPEC-SR0078] The RSR-CSR must interrogate Mode S transponders for Downlink Format 4 OR Downlink Format 20 replies for acquisition.

[RSR-SPEC-SR0079] The RSR-CSR must interrogate Mode S transponders for Downlink Format 5 OR Downlink Format 21 replies for acquisition.

[RSR-SPEC-SR0080] The RSR-CSR must interrogate Mode S transponders for Downlink Format 5 OR Downlink Format 21 replies when an alert condition occurs.

[RSR-SPEC-SR0081] The RSR-CSR must interrogate Mode S transponders for Downlink Format 5 OR Downlink Format 21 replies when Roll-Call replies have not been received for periods greater than 3 scans.

[RSR-SPEC-SR0082] Upon detection of a Resolution Advisory Report, the RSR-CSR must interrogate Mode S transponders with a request for downlink of the Resolution Advisory Report as defined in RTCA/DO-181E Section 2.2.22.1.2.1.1. [MVP]

3.1.2.1.1.2.1 Interrogate Mode S Aircraft Ground Initiated Comm B Registers [RSR-SPEC-SR0083] The RSR-CSR must determine the Mode S transponder’s data link capability from the transponder’s Mode S All-Call reply.

[RSR-SPEC-SR0084] The RSR-CSR must determine Mode S aircraft identification capability for each target.

[RSR-SPEC-SR0085] The RSR-CSR must determine Mode S Specific Services capabilities for each target.

[RSR-SPEC-SR0086] If the Mode S transponder has aircraft identification capability, the RSR- CSR must request readout for the Aircraft Identification after target acquisition.

[RSR-SPEC-SR0087] The RSR-CSR must be site adaptable to interrogate Mode S transponders for Ground Initiated Comm B registers. [MVP] [RSR-SPEC-SR0088] Selection of the RSR-CSR Ground Initiated Comm B register type interrogations must be site adaptable.

[RSR-SPEC-SR0089] The RSR-CSR must prevent interrogations for Ground Initiated Comm B registers from Mode S transponders that are not capable of providing the data.

[RSR-SPEC-SR0090] Roll-Call interrogations used for target surveillance must have priority over potential Roll-Call Ground Initiated Comm B interrogations pending for targets that have already had surveillance completed during a coexisting Beam Dwell of multiple targets.

[RSR-SPEC-SR0091] The RSR-CSR must have a site adaptable table to specify which Ground Initiated Comm B registers to request.

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[RSR-SPEC-SR0092] The RSR-CSR site adaptable Ground Initiated Comm B registers table must allow requests of up to six different register types.

[RSR-SPEC-SR0093] The RSR-CSR site adaptable Ground Initiated Comm B registers table must be hexadecimal in range from 01 to FF.

[RSR-SPEC-SR0094] The RSR-CSR must have a site adaptable periodicity for each Ground Initiated Comm B register request.

[RSR-SPEC-SR0095] The RSR-CSR site adaptable periodicity for each Ground Initiated Comm B register request must be between 1 and 1000 seconds in maximum 1 second increments.

[RSR-SPEC-SR0096] The RSR-CSR must have a site adaptable priority for each Ground Initiated Comm B register used to select the order of the Ground Initiated Comm B requests.

[RSR-SPEC-SR0097] The RSR-CSR site adaptable priority for each Ground Initiated Comm B register must be between 0 and 5 in integer increments.

3.1.2.1.1.3 Suppress Sidelobe Aircraft

[RSR-SPEC-SR0098] The RSR-CSR must transmit ATCRBS Interrogator Side Lobe Suppression P2 pulses in accordance with ICAO Annex 10 Volume IV Section 3.1.1.4. [MVP] [RSR-SPEC-SR0099] The RSR-CSR must transmit ATCRBS Interrogator Side Lobe Suppression P2 pulses in accordance with ICAO Annex 10 Volume IV Section 3.1.1.5.

[RSR-SPEC-SR0100] The RSR-CSR must transmit ATCRBS Improved Interrogator Side Lobe Suppression P1-P2 pulse pairs.

[RSR-SPEC-SR0101] The RSR-CSR peak power of the P1 pulse of the Improved Interrogator Side Lobe Suppression interrogations must be 3 dB +/-1 dB less than the peak power of the P2 pulse.

[RSR-SPEC-SR0102] The RSR-CSR must be site adaptable to use Interrogator Side Lobe Suppression OR Improved Interrogator Side Lobe Suppression.

[RSR-SPEC-SR0103] The RSR-CSR must transmit Mode S Interrogator Side Lobe Suppression P5 pulse for Mode S Only All-Call interrogations in accordance with ICAO Annex 10 Volume IV Section 3.1.2.1.5.2.1.

[RSR-SPEC-SR0104] The RSR-CSR must transmit Mode S Interrogator Side Lobe Suppression P5 pulse for Mode S Roll-Call interrogations in accordance with ICAO Annex 10 Volume IV Section 3.1.2.1.5.2.1.

[RSR-SPEC-SR0105] The RSR-CSR must receive replies on the Omega Channel of the antenna rotary joint.

[RSR-SPEC-SR0106] The RSR-CSR must receive replies on the Delta Channel of the antenna rotary joint.

[RSR-SPEC-SR0107] The RSR-CSR must receive replies on the Sigma Channel of the antenna rotary joint.

[RSR-SPEC-SR0108] The RSR-CSR must be site adaptable to detect potential Interrogator Code Conflicts.

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[RSR-SPEC-SR0109] The RSR-CSR must detect 1090MHz interference throughout the entire coverage volume.

3.1.2.1.2.1 Process ATCRBS Replies

[RSR-SPEC-SR0110] The RSR-CSR must receive ATCRBS replies from aircraft equipped with RTCA/DO-144A compliant Class B airborne avionics.

[RSR-SPEC-SR0111] The RSR-CSR must receive ATCRBS replies transmitted at 1090 ± 3 MHz per ICAO Annex 10 Volume IV Section 3.1.1.2.

[RSR-SPEC-SR0112] The RSR-CSR must decode ATCRBS replies in accordance with ICAO Annex 10 Volume IV Section 3.1.1.6.

[RSR-SPEC-SR0113] The RSR-CSR must process ATCRBS Mode 3/A replies in accordance with ICAO Annex 10 Volume IV Section 3.1.1.7.12.1.

[RSR-SPEC-SR0114] The RSR-CSR must process ATCRBS Mode C replies in accordance with ICAO Annex 10 Volume IV Section 3.1.1.7.12.2.

[RSR-SPEC-SR0115] The RSR-CSR must detect ATCRBS reply decoder overload.

[RSR-SPEC-SR0116] The RSR-CSR must receive Military Mode 2 replies generated from transponder equipped aircraft in accordance with DoD AIMS 03-1000B Section 4.3.1.

[RSR-SPEC-SR0117] The RSR-CSR must decode Military Mode 2 replies in accordance with DoD AIMS 03-1000B Section 4.3.1.

[RSR-SPEC-SR0118] The RSR-CSR must process Military Mode 2 replies in accordance with DoD AIMS 03-1000B Section 4.5.1. [MVP] [RSR-SPEC-SR0119] The RSR-CSR must process ATCRBS Mode 3/A codes in accordance with ICAO Annex 10 Volume IV Section 3.1.1.7.12.1.

[RSR-SPEC-SR0120] The RSR-CSR must process ATCRBS emergency replies in accordance with DoD AIMS 03-1000B Section 4.3.1.6.3.

3.1.2.1.2.2 Process Mode S Replies

[RSR-SPEC-SR0121] The RSR-CSR must receive Mode S replies from aircraft equipped with MOPS-compliant Class 1 avionics as defined in RTCA/DO-181E Section 1.4.5.

[RSR-SPEC-SR0122] The RSR-CSR must receive Mode S replies from aircraft equipped with MOPS-compliant Class 2 avionics as defined in RTCA/DO-181E Section 1.4.5.

[RSR-SPEC-SR0123] The RSR-CSR must process Mode S replies in accordance with ICAO Annex 10 Volume IV Section 3.1.2.2.

[RSR-SPEC-SR0124] The RSR-CSR must process Mode S reply data structures in accordance with ICAO Annex 10 Volume IV Section 3.1.2.3.

[RSR-SPEC-SR0125] The RSR-CSR must process Mode S Downlink Format 11 All-Call replies, in accordance with ICAO Annex 10 Volume IV Section 3.1.2.5.2.2.

[RSR-SPEC-SR0126] The RSR-CSR must process Mode S Downlink Format 4 replies in accordance with ICAO Annex 10 Volume IV Section 3.1.2.6.5.

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[RSR-SPEC-SR0127] The RSR-CSR must process Mode S Downlink Format 5 replies in accordance with ICAO Annex 10 Volume IV Section 3.1.2.6.7.

[RSR-SPEC-SR0128] The RSR-CSR must process Mode S Downlink Format 20 replies in accordance with ICAO Annex 10 Volume IV Section 3.1.2.6.6.

[RSR-SPEC-SR0129] The RSR-CSR must process Mode S Downlink Format 21 replies in accordance with ICAO Annex 10 Volume IV Section 3.1.2.6.8.

[RSR-SPEC-SR0130] The RSR-CSR must detect the presence of a Resolution Advisory Report from Mode S transponders as defined in RTCA/DO-181E Section 2.2.22.1.2.1.1.

[RSR-SPEC-SR0131] The RSR-CSR must process Mode 3/A codes in Mode S replies in accordance with ICAO Annex 10 Volume IV Section 3.1.2.6.7.1.

3.1.2.1.2.3 Process ADS-B Message

[RSR-SPEC-SR0132] The RSR-CSR must receive ADS-B Messages from aircraft equipped with MOPS compliant Class A1 avionics as defined in RTCA/DO-260B Section 2.1.11.

[RSR-SPEC-SR0133] The RSR-CSR must receive ADS-B Messages from aircraft equipped with MOPS compliant Class B1 avionics as defined in RTCA/DO-260B Section 2.1.11.

[RSR-SPEC-SR0134] The RSR-CSR must decode ADS-B Messages in accordance with RTCA/DO-260B Section 2.2.4.3.4.5.

3.1.2.1.2.4 Perform Receiver Side Lobe Suppression (RSLS)

[RSR-SPEC-SR0135] The RSR-CSR must perform Receiver Side Lobe Suppression as a means of rejecting replies from the Sigma Channel using the reference of Omega Channel.

[RSR-SPEC-SR0136] The RSR-CSR Receiver Side Lobe Suppression threshold between the Omega Channel to Sigma Channel received power level must be site adaptable between 1 dB and 12 dB in 1dB increments.

3.1.2.1.3.1 Generate ATCRBS Reports

[RSR-SPEC-SR0137] The RSR-CSR must produce ATCRBS Reports from ATCRBS replies received during the Beam Dwell.

[RSR-SPEC-SR0138] The RSR-CSR must validate Military Mode 2-only replies prior to association with other ATCRBS Reports.

[RSR-SPEC-SR0139] The RSR-CSR must associate Military Mode 2 replies from an ATCRBS transponder to ATCRBS Reports.

[RSR-SPEC-SR0140] The RSR-CSR must produce Military Mode 2-only ATCRBS Reports when Military Mode 2 replies do not associate to ATCRBS Reports.

[RSR-SPEC-SR0141] The RSR-CSR must merge ATCRBS replies from a single aircraft into one ATCRBS Report.

[RSR-SPEC-SR0142] The RSR-CSR must use a site adaptable minimum number of matching ATCRBS Mode 3/A replies when generating an ATCRBS Report.

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[RSR-SPEC-SR0143] The RSR-CSR must use a site adaptable minimum number of matching ATCRBS Mode C replies when generating an ATCRBS Report.

[RSR-SPEC-SR0144] The RSR-CSR must use a site adaptable minimum number of ATCRBS replies when generating an ATCRBS Report.

[RSR-SPEC-SR0145] The RSR-CSR must use a site adaptable minimum number of high confidence ATCRBS replies when generating an ATCRBS Report.

3.1.2.1.3.2 Generate Mode S Reports

[RSR-SPEC-SR0146] The RSR-CSR must produce Mode S Reports from All-Call replies received from a single aircraft during the Beam Dwell.

[RSR-SPEC-SR0147] The RSR-CSR must produce Mode S Reports from Roll-Call replies received from a single aircraft during the Beam Dwell.

[RSR-SPEC-SR0148] The Mode S Report must contain the decoded messages for successfully decoded replies.

3.1.2.1.3.3 Generate ADS-B Reports

[RSR-SPEC-SR0149] The RSR-CSR must produce ADS-B Reports from ADS-B Messages.

Process Surveillance Data

[RSR-SPEC-SR0150] The RSR-CSR must receive Adjacent Sensor messages formatted in accordance with EUROCONTROL STANDARD DOCUMENT FOR SURVEILLANCE DATA EXCHANGE Part 5: Category 017 Mode S Surveillance Coordination Function Messages, Edition 1.3, Jan 2009, Including Appendix A.

[RSR-SPEC-SR0151] The RSR-CSR must process Adjacent Sensor messages formatted in accordance with EUROCONTROL STANDARD DOCUMENT FOR SURVEILLANCE DATA EXCHANGE Part 5: Category 017 Mode S Surveillance Coordination Function Messages, Edition 1.3, Jan 2009, Including Appendix A.

[RSR-SPEC-SR0152] The RSR-CSR must have a Surveillance Coordination Function complying with Essential Requirements defined in Chapter 8, European Mode S Station Functional Specification SUR/MODES/EMS/SPE-01, Edition 3.11, 9 May 2005.

[RSR-SPEC-SR0153] The RSR-CSR must support network aided distributed operation OR standalone operation, as defined in European Mode S Station Intersite Surveillance Coordination Interface Control Document, SUR/MODES/EMS/ICD-01, Edition 2.06, 9 May 2005.

[RSR-SPEC-SR0154] The RSR-CSR must be site adaptable to form a cluster with any Mode S ground station whose network interface complies with European Mode S Station Intersite Surveillance Coordination Interface Control Document, SUR/MODES/EMS/ICD-01, Edition 2.06, 9 May 2005.

[RSR-SPEC-SR0155] The RSR-CSR must interface with up to 5 other Mode S ground stations via the Surveillance Coordination Network using TCP/IP.

[RSR-SPEC-SR0156] The RSR-CSR Surveillance Coordination Function must provide coordination procedures, complying with, European Mode S Station Intersite Surveillance

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Coordination Interface Control Document, SUR/MODES/EMS/ICD-01, Edition 2.06, 9 May 2005, between coverage areas of networked ground stations to allow target acquisition without need for All-Call.

[RSR-SPEC-SR0157] The RSR-CSR Surveillance Coordination Function must provide track data to adjacent stations upon request in accordance with EUROCONTROL ASTERIX Category 017 Specification SUR.ET2.ST03.3111-SPC-02-00, Edition 1.3, January 2009.

[RSR-SPEC-SR0158] The RSR-CSR must utilize a Network Coverage Map formatted in accordance with the European Mode S Station Coverage Map Interface Control Document, SUR/MODES/EMS/ICD-03, Edition 1.16, 9 May 2005.

[RSR-SPEC-SR0159] In network aided distributed mode, the RSR-CSR must select the Solution List entry by the algorithm as defined in European Mode S Station Intersite Surveillance Coordination Interface Control Document, SUR/MODES/EMS/ICD-01, Edition 2.06, 9 May 2005, operating at the radar node.

Correlate Surveillance Data

3.1.2.3.1.1 Correlate Beacon Reports

[RSR-SPEC-SR0160] The RSR-CSR must merge Mode S AND ATCRBS Reports from the same aircraft into a single Mode S Report. [MVP] [RSR-SPEC-SR0161] The RSR-CSR must merge Mode S AND Military Mode 2-only ATCRBS Reports from the same aircraft into a single Mode S Report.

[RSR-SPEC-SR0162] The RSR-CSR must use the Mode S Report position AND identification information when merging with an ATCRBS Report from the same aircraft.

[RSR-SPEC-SR0163] The RSR-CSR must use the Mode S Report position information when merging with a Military Mode 2-only ATCRBS Report from the same aircraft.

[RSR-SPEC-SR0164] The RSR-CSR must have a site adaptable Mode S-ATCRBS range-azimuth-altitude merge window range from 0 to 1 nmi in minimum 0.005 nmi increments to merge Mode S AND ATCRBS Reports from the same aircraft.

[RSR-SPEC-SR0165] The RSR-CSR must have a site adaptable Mode S-ATCRBS range-azimuth-altitude merge window azimuth from 0 to 1250 improved Azimuth Change Pulses in maximum 1 improved Azimuth Change Pulse increments to merge Mode S AND ATCRBS Reports from the same aircraft.

[RSR-SPEC-SR0166] The RSR-CSR must have a site adaptable Mode S-ATCRBS range-azimuth-altitude merge window pressure altitude from 0 to 1,000 ft. in minimum 100 ft. increments to merge Mode S AND ATCRBS Reports from the same aircraft.

[RSR-SPEC-SR0167] The RSR-CSR must merge Mode S AND ATCRBS Reports if altitude information is not available.

[RSR-SPEC-SR0168] The RSR-CSR must merge Mode S AND ATCRBS Reports if the altitude has been determined invalid.

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3.1.2.3.1.2 Eliminate False Targets

[RSR-SPEC-SR0169] The RSR-CSR must have processing to eliminate false targets generated by Reflectors.

[RSR-SPEC-SR0170] The RSR-CSR must have reflection processing for a minimum of 256 Reflectors.

[RSR-SPEC-SR0171] The RSR-CSR reflection processing must allow the user to define Static Reflectors in site adaptation.

[RSR-SPEC-SR0172] The RSR-CSR Static Reflectors must be site adaptable in position AND orientation.

[RSR-SPEC-SR0173] The RSR-CSR must automatically identify the orientation AND position of Reflectors not defined as Static Reflectors in site adaptation.

[RSR-SPEC-SR0174] The RSR-CSR must maintain automatically identified Reflectors based on the presence of reflected replies.

[RSR-SPEC-SR0175] The RSR-CSR must store the automatically identified reflector data.

[RSR-SPEC-SR0176] The RSR-CSR must update the stored reflector data on change.

[RSR-SPEC-SR0177] The RSR-CSR must use processing to eliminate false replies due to the reception of in-line multipath replies due to vertical antenna lobing OR reflecting surfaces directly positioned in the main antenna beam pattern.

[RSR-SPEC-SR0178] The RSR-CSR must use site adaptable processing to eliminate multipath replies utilizing the amplitude difference between the directly received reply pulses and the multipath reply pulses.

[RSR-SPEC-SR0179] The RSR-CSR must use site adaptable processing to eliminate multipath replies utilizing the time difference between the directly received reply pulses and the multipath reply pulses.

[RSR-SPEC-SR0180] The RSR-CSR must have region-based processing for controlling false target processing.

[RSR-SPEC-SR0181] The RSR-CSR must have region-based processing for controlling reflection processing.

[RSR-SPEC-SR0182] The RSR-CSR region-based processing must be able to prevent initially detected reports from initiating tracks when in the region.

[RSR-SPEC-SR0183] The RSR-CSR region-based processing must be a site adaptable subsection of the coverage volume.

3.1.2.3.1.3 Schedule Interrogations

[RSR-SPEC-SR0184] The RSR-CSR must schedule Mode S Roll-Call interrogations when the predicted position of the Mode S target is in the main beam.

[RSR-SPEC-SR0185] The RSR-CSR must prevent scheduling of Mode S Roll-Call interrogations for Mode S targets with a predicted position inside the cone of silence.

[RSR-SPEC-SR0186] The RSR-CSR must maintain Roll-Call on aircraft with duplicate ICAO addresses.

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3.1.3 Common Functional Requirements

Legacy Encoder Interfaces [RSR-SPEC-SR0187] The RSR must operate with the beacon only radar azimuth encoder per the NAS-IC-34203403 Interface Control Document for the Mode Select Beacon System (Mode S) to Azimuth Pulse Generator (APG) Units. [MVP] [RSR-SPEC-SR0188] The RSR must operate with the ASR-9 terminal radar azimuth encoder per the NAS-IC-34203403 Interface Control Document for the Mode Select Beacon System (Mode S) to Azimuth Pulse Generator (APG) Units. [MVP] [RSR-SPEC-SR0189] The RSR must operate with the CARSR en route radar azimuth encoder per the NAS-IC-34203403 Interface Control Document for the Mode Select Beacon System (Mode S) to Azimuth Pulse Generator (APG) Units. [MVP] [RSR-SPEC-SR0190] The RSR must operate with the ASR-8 terminal radar azimuth encoder per the NAS-IC-34203403 Interface Control Document for the Mode Select Beacon System (Mode S) to Azimuth Pulse Generator (APG) Units. [MVP] [RSR-SPEC-SR0191] The RSR must operate with the ASR-11 terminal radar azimuth encoder.

[MVP]

[RSR-SPEC-SR0192] The RSR must have dual redundant interfaces to the Azimuth Pulse Generator source in accordance with NAS-IC-34203403 Interface Control Document for the Mode Select Beacon System (Mode S) to Azimuth Pulse Generator (APG) Units. [MVP] [RSR-SPEC-SR0193] The RSR must provide an external Azimuth Pulse Generator output from each source azimuth encoder.

[RSR-SPEC-SR0194] The RSR geographical location of the antenna must be site adaptable in WGS-84 coordinates.

[RSR-SPEC-SR0195] The RSR elevation of the antenna must be site adaptable in feet referenced to mean sea level.

Correlate Surveillance Data

3.1.3.2.1.1 Merge Co-located Cooperative Target with Non-Cooperative Target [RSR-SPEC-SR0196] The RSR system collocated with a cooperative surveillance system must merge cooperative AND non-cooperative target reports from a single aircraft into a single merged target report for the aircraft.

[RSR-SPEC-SR0197] The RSR must have a site adaptable search/beacon range merge window from 0 to 1 nmi in minimum 0.005 nmi increments to merge Beacon AND Search Reports from the same aircraft.

[RSR-SPEC-SR0198] The RSR must have a site adaptable search/beacon azimuth merge window from 1 to 1250 improved Azimuth Change Pulses in maximum 1 improved Azimuth Change Pulse increments to merge Beacon AND Search Reports from the same aircraft.

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[RSR-SPEC-SR0199] The RSR must be site adaptable to select either the Beacon Report or the Search Report as the reference source for position data when merging Beacon Reports with Search Reports from the same aircraft into a single merged Beacon/Search Report.

Track Targets [RSR-SPEC-SR0200] The RSR system must track aircraft utilizing plot reports from the RSR- NCSR and RSR-CSR.

[RSR-SPEC-SR0201] The RSR must separately track Mode S aircraft with duplicate ICAO addresses.

[RSR-SPEC-SR0202] The RSR must have a site adaptable non-discrete ATCRBS Mode 3/A code list for up to 25 ATCRBS discrete Mode 3/A codes.

[RSR-SPEC-SR0203] The RSR must separately track ATCRBS aircraft with a duplicate discrete Mode 3/A code from the non-discrete ATCRBS Mode 3/A code list.

[RSR-SPEC-SR0204] The RSR must maintain an aircraft’s unique track identification during transition to redundant processing Line Replaceable Units greater than 99.9% of the time.

[RSR-SPEC-SR0205] The RSR must be site adaptable to track an aircraft with a steady state speed from 0 to 2,000 knots in 1 knot minimum increments.

[RSR-SPEC-SR0206] The RSR must be site adaptable to track an aircraft with a vertical rate of climb or descent from 0 to 25,000 feet per minute in 100 feet minimum increments with or without horizontal displacement.

[RSR-SPEC-SR0207] The RSR must be site adaptable to track an aircraft with a straight-line acceleration from an initial velocity in the range of 0 to 2,000 knots, from 0.01 to 5g, to achieve a steady state speed of between 0 and 2,000 knots.

[RSR-SPEC-SR0208] The RSR must be site adaptable to track an aircraft maneuvering at accelerations between 0 to 5g.

3.1.3.3.1.1 Acquire Cooperative Targets

[RSR-SPEC-SR0209] The RSR tracker function must use ADS-B Reports for cooperative target acquisition. [MVP] [RSR-SPEC-SR0210] The RSR tracker function must use correlating Mode S All-Call Beacon Reports for target acquisition.

[RSR-SPEC-SR0211] The RSR tracker function must use ATCRBS Reports for target acquisition.

3.1.3.3.1.2 Initiate Tracks

[RSR-SPEC-SR0212] The RSR must use a tracker function to initiate tracks on Target Reports in the Coverage Volume.

[RSR-SPEC-SR0213] The RSR tracker function must use Mode S Reports for track initiation.

[RSR-SPEC-SR0214] The RSR tracker function must use Network Aided Reports for track initiation.

[RSR-SPEC-SR0215] The RSRR tracker function must use ATCRBS Reports for track initiation.

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[RSR-SPEC-SR02…