Attachment G-1 418-XO-IRD-0044 DCSIRD V1_3.pdf

Effective Date: March 20, 2023 418-XO-IRD-0044 Responsible Organization: GeoXO Flight Project/Code 418 Baseline Version 1.3

Geostationary Extended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD) Signature page

Prepared by:

Electronically approved by:

01/21/2022

Thomas W. Kenney Date GeoXO Flight Project, Systems Engineer NASA GSFC, Code 418

Reviewed by:

02/03/2022

Steven W. Bidwell Date GeoXO Flight Project, Mission Systems Engineer NASA GSFC, Code 599

02/04/2022

Alexander Krimchansky Date GeoXO Program, Mission Systems Engineer NASA GSFC, Code 590

Electronically approved by: 01/25/2022 Kevin M. Mcmahon Date GeoXO Ground, Mission Systems Engineer NASA GSFC, Code 416

Approved by:

02/10/2022

Jason Hair Date GeoXO Flight Project, Project Manager NASA GSFC, Code 418

/GeoXO Flight Project Spacecraft

DCSIRD

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface Requirements Document (IRD)

Version: 1.3 Printed by: hlhedger Printed on: Thursday, July 6, 2023

No filter applied.

No sort applied.

Generated from DOORS 9.7.2.4

Contents

1 1Introduction

1.1 1General GeoXO Description

1.1.1 1Mission Objectives

1.1.2 1Mission Description

1.2 1DCS Scope

1.3 2Applicable Documents

1.4 2Requirements Terminology

2 3DCS Service and Interface Description

3 4DCS RF Interface Performance Requirements

3.1 4Simultaneous Links

3.2 4NTIA Compliance

3.3 4Power Flux Density Limits

3.4 4Reserved (CCR-X00161)

3.5 4Long Term Frequency Stability

3.6 4Short Term Frequency Stability

3.7 4Spacecraft Phase Noise

3.8 5Unwanted Emissions (CCR-X00161)

3.9 5Spacecraft Intermodulation

4 6DCPR RF Interface Performance Requirements

4.1 6General DCPR Requirements

4.1.1 6DCPR Requirements Summary

4.1.2 6Link Margin Requirement

4.1.3 7DCPR End-to-End BER

4.2 7Uplink DCPR RF Interface Requirements

4.2.1 7Uplink Center Frequency and Frequency Stability

4.2.2 7Uplink EIRP and Capacity

4.2.3 7Uplink G/T

4.2.4 7Uplink Polarization

4.2.5 7Uplink Atmospheric Loss

4.2.6 7Uplink Polarization Loss

4.2.7 7Uplink Pointing Loss

4.2.8 8Forward Error Correction

4.2.9 8Uplink Data Rates

Project: GeoXO Flight Project Spacecraft Module: DCSIRD Baseline Version: 1.3

Contents ii

4.2.10 8Uplink Modulation

4.2.11 8Uplink Format

4.2.12 8Uplink Phase Noise

4.2.13 8Spacecraft Receive Coverage

4.2.14 8Rejection of Out of Band Signals

4.2.15 8Transponder Intermediate Frequency Filtering Requirements

4.2.16 9DCPR Interference Level to CDA TLM Downlink (CCR-X00192)

4.3 9Downlink DCPR Interface Requirements

4.3.1 9Downlink Center Frequency

4.3.2 9Ground Antenna G/T and Spacecraft EIRP

4.3.3 9Spacecraft Transmit Coverage

4.3.4 9DCPR Downlink Polarization

4.3.5 9DCPR Receive Eb/No

4.3.6 10Downlink Atmospheric Loss

4.3.7 10Downlink Pointing Loss

4.3.8 10Downlink Polarization Loss

4.3.9 10Gain Control Modes and High Power Amplifier (HPA) Telemetry

4.3.9.1 10Automatic Level Control Mode

4.3.9.2 11Fixed Gain Mode

4.3.10 11DCPR Terminal Phase Noise

4.3.11 11DCPR Transponder NPR

5 12DCPC Link Interface Requirements (CCR-X00161)

5.1 12General DCPC Requirements (CCR-X00161)

5.1.1 12DCPC Requirements Summary (CCR-X00161)

5.1.2 13Link Margin Requirement (CCR-X00161)

5.1.3 13DCPC End-to-End BER (CCR-X00161)

5.2 13Uplink DCPC RF Interface Requirements (CCR-X00161)

5.2.1 13Uplink Center Frequency and Frequency Stability (CCR-X00161)

5.2.2 13Uplink EIRP (CCR-X00161)

5.2.3 13Uplink G/T (CCR-X00161)

5.2.4 13Uplink Polarization (CCR-X00161)

5.2.5 13Uplink Atmospheric Loss (CCR-X00161)

5.2.6 13Uplink Polarization Loss (CCR-X00161)

5.2.7 13Uplink Pointing Loss (CCR-X00161)

5.2.8 14Forward Error Correction (CCR-X00161)

Contents iii

5.2.9 14Uplink Data Rate (CCR-X00161)

5.2.10 14Uplink Modulation (CCR-X00161)

5.2.11 14Uplink Chip Rate (CCR-X00161)

5.2.12 14Uplink Channel Bandwidth (CCR-X00161)

5.2.13 14Uplink Format (CCR-X00161)

5.2.14 14DCPC Unwanted Emissions (CCR-X00161)

5.2.15 14Uplink Phase Noise (CCR-X00161)

5.2.16 15Spacecraft Receive Coverage (CCR-X00161)

5.3 15Downlink DCPC Interface Requirements (CCR-X00161)

5.3.1 15Downlink Center Frequency (CCR-X00161)

5.3.2 15DCP Receive Antenna G/T and Spacecraft EIRP (CCR-X00161)

5.3.3 15Spacecraft Transmit Coverage (CCR-X00161)

5.3.4 15DCPC Downlink Polarization (CCR-X00161)

5.3.5 15DCPC Receive Eb/No (CCR-X00161)

5.3.6 15Downlink Atmospheric Loss (CCR-X00161)

5.3.7 16Downlink Pointing Loss (CCR-X00161)

5.3.8 16Downlink Polarization Loss (CCR-X00161)

5.3.9 16Gain Control Modes and HPA Telemetry (CCR-X00161)

5.3.9.1 16Automatic Level Control Mode (CCR-X00161)

5.3.9.2 16Fixed Gain Mode (CCR-X00161)

5.3.10 16DCPC Terminal Phase Noise (CCR-X00161)

5.3.11 16DCPC Capacity (CCR-X00161)

6 18Abbreviations and Acronyms

Contents iv

Page 1 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD1

DCSIRD2

DCSIRD3

DCSIRD4

DCSIRD5

DCSIRD6

DCSIRD7

DCSIRD8

DCSIRD9

DCSIRD10

Object Number

1.1

1.1.1

1.1.1.0-1

1.1.2

1.1.2.0-1

1.1.2.0-2

1.1.2.0-3

1.1.2.0-4

1.2

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

1 Introduction

1.1 General GeoXO Description

1.1.1 Mission Objectives

Primary Mission Objectives:

a) To maintain GOES mission continuity and quality in environmental observations in the 2030-2050 timeframe

b) To provide enhanced environmental data products

c) To improve services and data being provided to Users

d) To be responsive to technology infusion to meet evolving User needs

1.1.2 Mission Description

The mission of the GeoXO System will be to acquire and disseminate environmental data from a near-equatorial Earth orbit at geosynchronous altitude (i.e., a geostationary orbit). This includes the Earth's surface and atmosphere. The major functions of the GeoXO System are to support the Imager (GXI), Lightning Mapper (LMX), Infrared Sounder (GXS), Atmospheric Composition (ACX), Ocean Color (OCX). Another function of the GeoXO System is to support terrestrial and oceanographic Data Collection Platforms (DCPs).

The GeoXO satellite will be launched from Cape Canaveral, FL. The government will be responsible for all ground networks, and communications required for performing the launch and orbit raising activities. All launch and orbit raising activities will be performed from the NOAA Satellite Operations Facility (NSOF) in Suitland, MD. Once geostationary orbit is achieved, all activities will be performed using the Wallops Command and Data Acquisition Station (WCDAS) at Wallops, Virginia as the primary ground station, and a Consolidated Backup (CBU) facility at Fairmont, West Virginia. (CCR-X00161)

The GeoXO operational constellation will provide coverage from three locations, one at approximately 75° west longitude and the second at 105° west and the third at approximately 137° west longitude. The DCS services that includes both the DCPR and DCPC links service will only be supported on the east and west satellites. One or two satellites may be maintained as on orbit spares positioned at approximately 92° west or 94° west longitude. Post launch test and checkout activities will nominally be conducted at 88º west longitude. The satellites may be operated anywhere between 5° west and 148° west. During the transition to the GeoXO satellite series, the operational constellation may contain GOES-R satellites and incumbent satellites that have not yet been de-orbited. (CCR-X00161)

The satellites will be commanded throughout their mission lifetime from the NOAA Satellite Operational Control Center (SOCC) located at NSOF with the ground station radio frequency (RF) interface located at the WCDAS or CBU. The satellite health and safety telemetry streams will be received by the WCDAS/CBU and ground relayed to the SOCC for processing and monitoring. The raw sensor data will be received by the WCDAS/CBU, processed, reformatted, and distributed via NESDIS common cloud framework (NCCF). The WCDAS/CBU also receives all data collection platform reports automatically through the Data Collection Platform Reports (DCPR) transponder.

1.2 DCS Scope

Page 2 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD11

DCSIRD12

DCSIRD13

DCSIRD18

DCSIRD19

Object Number

1.2.0-1

1.3

1.3.0-1

1.4

1.4.0-1

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

The interfaces addressed in this document support the exchange of data between the DCS platforms and the Space Segment (SS) and between the SS and WCDAS/CBU. The interfaces for the platform control (DCS to SS and SS to platforms) are also described.

Only those parameters which are necessary to describe these interface requirements will be referenced. (CCR-X00161)

1.3 Applicable Documents

The following documents form a part of the requirements to the extent specified herein.

1. GOES Data Collection Platform Radio Set (DCPRS) CERTIFICATION STANDARDS at 300 bps and 1200 bps, NOAA/NESDIS (DCPRS) Certification Standards, Version 2.0, June 2009 edition.

2. Manual of Regulations and Procedures for Federal Radio Frequency Management, National Telecommunications and Information Administration (NTIA), January 2021 Edition.

3. ITU Limits for power flux density from space stations, ITU Radio Regulations, Chapter VI, Article 21, Section 5,2020 Edition.

4. DELETED

5. TC Synchronization and Channel Coding, Blue Book, CCSDS 131.0-B-4, April

2022.

(CCR-X00161)

1.4 Requirements Terminology

The following requirements terminology is used throughout this document:

The use of “shall” designates a requirement that must be met.

The use of “will” designates a statement of fact or intention of the government.

The use of “may” designates that permission has been granted by the government.

The term “(TBD)” means, “to be determined” and is used when no value is available with subsequent study needed to obtain it.

The term “(TBR)” means “to be refined/reviewed” for a value that is subject to review for appropriateness and is subject to revision. The vendor is liable for compliance with the information marked “TBR” as if the “TBR” notation did not exist.

The “Spacecraft contractor’s ICD” is synonymous with the RF Spacecraft to ground ICD.

Page 3 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD23

DCSIRD24

DCSIRD25

DCSIRD137

DCSIRD26

DCSIRD138

DCSIRD27

DCSIRD133

DCSIRD28

DCSIRD29

DCSIRD30

DCSIRD136

Object Number

2.0-1

2.0-2

2.0-3

2.0-4

2.0-5

2.0-6

2.0-7

2.0-8

2.0-9

2.0-10

2.0-11

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

2 DCS Service and Interface Description

The GeoXO support to the Data Collection System (DCS) is provided by GeoXO satellites located at approximately 75º west and approximately 137º west longitude. This system provides two-way communication links between a large number of DCPs, through the GeoXO satellites to WCDAS, CBU and other ground stations, provided they are within the GeoXO coverage footprint. These DCPs are typically small remote monitoring stations used for the collection and reporting of near real-time environmental data and may be anywhere in the coverage region. DCPs may be located on aircraft, ships, balloons, and fixed sites and collect a wide variety of data (e.g., seismic, water level, wave state, snow and ice cover, etc.). The satellite access methods include either random, or scheduled access. (CCR-X00161)

Messages from the DCP to the WCDAS, CBU, and other ground stations, containing the reported data, are called Data Collection Platform Report (DCPR) messages and use 8- PSK modulation.

The DCPC transponders relay command messages from the ground stations to the DCPs and uses QPSK/CDMA modulation. (CCR-X00161)

The DCPR transponders will have the characteristics of a “bent-pipe architecture,” i.e., the downlink will have the same modulation and formatting as the uplink, regardless of the modulation used. The DCPR uplink is UHF and the downlink is L-Band. The DCPR transmissions are timed and randomly scheduled channelized frequency division multiple access (FDMA) with a total bandwidth of 400 kHz available. The DCPR channel center frequencies are given in applicable document [1].

The DCPC transponders will have the characteristics of a "bent-pipe architecture" i.e., the downlink will have the same modulation and formatting as the uplink, regardless of the modulation used on the uplink. The DCPC uplink is S-Band and downlink is UHF band. The signal bandwidth of the DCPC transponder is 100 kHz and covers both East and West frequency plans. (CCR-X00161)

The first 300 kHz is for domestic service. The 300 kHz is channelized and can be divided into 400, 300 bit/s (data) services with a channel bandwidth of 750 Hz, and into channels for 1200 bit/s (data) service with a channel bandwidth of 2250 Hz.

The first 50 kHz bandwidth is allocated for DCPC link operation at GeoI-East orbital slot while the second half of 50 kHz bandwidth is allocated for the GeoI-West frequency band. (CCR-X00161)

The upper 100 kHz consists of 132 channels with a 750 Hz bandwidth that are assigned to the International Data Collection System (IDCS) service.

Section 3 defines the overall link performance required for both the DCPR and DCPC links. (CCR-X00161)

Section 4 defines the interface and performance requirements for the DCPR interface.

(CCR-X00161)

Section 5 defines the interface and performance requirements for the DCPC links. (CCR- X00161)

Page 4 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD31

DCSIRD32

DCSIRD33

DCSIRD34

DCSIRD35

DCSIRD36

DCSIRD37

DCSIRD38

DCSIRD39

DCSIRD40

DCSIRD41

DCSIRD42

DCSIRD43

DCSIRD134

DCSIRD44

DCSIRD45

DCSIRD139

DCSIRD46

DCSIRD47

Object Number

3.0-1

3.0-2

3.1

3.1.0-1

3.2

3.2.0-1

3.3

3.3.0-1

3.4

3.4.0-1

3.5

3.5.0-1

3.5.0-2

3.6

3.6.0-1

3.6.0-2

3.7

3.7.0-1

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

3 DCS RF Interface Performance Requirements

The DCPR and DCPC links shall meet performance requirements when the spacecraft is in the operational mode. (CCR-X00161)

This section provides the interface requirements for the DCPR and DCPC services. (CCR- X00161)

3.1 Simultaneous Links

All services shall meet their performance requirements simultaneously with the operation of all other GeoXO services.

3.2 NTIA Compliance

The DCPR and DCPC communication links shall comply with all NTIA requirements for geostationary spacecraft operating at UHF, and L-Band frequencies. [Applicable Document 2]. (CCR-X00161)

3.3 Power Flux Density Limits

The downlink Power Flux Density (PFD) values for the DCPR and DCPC links shall conform to the ITU regulations RR21 that pertain to UHF and L-Band transmissions [Applicable Document 3] and be incorporated into the spacecraft contractor's ICD. (CCR- X00161)

3.4 Reserved (CCR-X00161)

Reserved (CCR-X00161)

3.5 Long Term Frequency Stability

The DCPR long term frequency translation error due to the satellite shall be > - 0.1 ppm and < 0.1 ppm from its nominal RF downlink frequency under all conditions over the life of the spacecraft. (CCR-X00161) (CCR-X00192)

The DCPC long term frequency translation error due to the satellite shall be less than ±

1.0 ppm from its nominal RF downlink frequency under all conditions over the life of the spacecraft. (CCR-X00161)

3.6 Short Term Frequency Stability

The DCPR short term frequency translation error due to the spacecraft shall be less than 1x10-11 for one second and 1x10-10 for ten seconds from its nominal RF downlink frequency. (CCR-X00161)

The DCPC short term frequency translation error due to the spacecraft shall be less than 1x10-9 for one second and 1x10-8 for ten seconds from its nominal RF downlink frequency. (CCR-X00161)

3.7 Spacecraft Phase Noise

The phase noise added to the DCPR service by the spacecraft shall be < 1.5° RMS from 2 Hz to a frequency equal to its maximum modulation symbol rate. (CCR-X00161)

Page 5 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD135

DCSIRD48

DCSIRD49

DCSIRD141

DCSIRD50

DCSIRD51

Object Number

3.7.0-2

3.8

3.8.0-1

3.8.0-2

3.9

3.9.0-1

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

The phase noise added to the DCPC service by the spacecraft shall be < 2.5° RMS from 2 Hz to a frequency equal to its maximum modulation symbol rate. (CCR-X00161)

3.8 Unwanted Emissions (CCR-X00161)

The unwanted emissions from the DCPR downlink shall not exceed the levels specified in Part 5.6 of Applicable Document 2.

The unwanted emissions from the DCPC downlink shall not exceed the levels specified in Part 5.2 of Applicable Document 2. (CCR-X00161)

3.9 Spacecraft Intermodulation

If multiple GeoXO services pass through the same amplifying module, the intermodulation products that fall within any transmission channel shall be at least 30 dB below the desired signal levels when tested with unmodulated signals that are 3 dB below their dynamic range maximum and anywhere in their channel bandwidth.

Page 7 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD61

DCSIRD62

DCSIRD63

DCSIRD64

DCSIRD65

DCSIRD66

DCSIRD67

DCSIRD68

DCSIRD69

DCSIRD70

DCSIRD71

DCSIRD72

DCSIRD73

DCSIRD74

DCSIRD75

DCSIRD76

DCSIRD77

DCSIRD78

DCSIRD79

Object Number

4.1.2.0-1

4.1.3

4.1.3.0-1

4.2

4.2.0-1

4.2.1

4.2.1.0-1

4.2.2

4.2.2.0-1

4.2.2.0-2

4.2.3

4.2.3.0-1

4.2.4

4.2.4.0-1

4.2.5

4.2.5.0-1

4.2.6

4.2.6.0-1

4.2.7

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

The spacecraft shall provide a minimum link margin of 2 dB for the DCPR link over the life of the satellite and over the coverage. (CCR-X00192)

4.1.3 DCPR End-to-End BER

The BER shall be less than 1x 10-6 after decoding.

4.2 Uplink DCPR RF Interface Requirements

This section describes the ground to spacecraft (uplink) requirements.

4.2.1 Uplink Center Frequency and Frequency Stability

The spacecraft shall meet all of its performance requirements for DCPR uplinks received in a 400 kHz bandwidth centered at 401.900 MHz (Domestic band) or 402.200 MHz (International band) and maintained to one part in 108.

4.2.2 Uplink EIRP and Capacity

The spacecraft shall meet all of its performance requirements for 500 DCPR uplinks at an average uplink EIRP of 41 dBm, and at least one 300 bps signal at 37 dBm and at least one 1200 bps signal at 43 dBm at any frequency in the transponder passband.

The spacecraft shall meet all of its performance requirements when the 300 bps signals are between 37 and 41 dBm and the 1200 bps signals are between 43 and 47 dBm.

4.2.3 Uplink G/T

The value for the spacecraft Gain-to-Noise Temperature Ratio (G/T) to meet the performance requirements shall be determined by the spacecraft contractor and incorporated into the spacecraft contractor's ICD.

4.2.4 Uplink Polarization

The spacecraft shall meet all of its performance requirements for DCPR uplinks with RHCP polarization to a spacecraft antenna with RHCP polarization.

4.2.5 Uplink Atmospheric Loss

The spacecraft shall meet all of its performance requirements with an atmospheric attenuation loss of 0.7 dB on the uplink (based on 99.99% one-way annual availability including scintillation).

4.2.6 Uplink Polarization Loss

The spacecraft shall meet all of its performance requirements with a polarization loss from the DCPR antenna of 0.0 dB as this loss is included in the EIRP uplink specification.

The worst case Axial Ratio is 6.0 dB as specified in the DCPRS Certification document [Applicable Document 1].

4.2.7 Uplink Pointing Loss

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ID

DCSIRD80

DCSIRD81

DCSIRD82

DCSIRD83

DCSIRD84

DCSIRD85

DCSIRD86

DCSIRD87

DCSIRD88

DCSIRD89

DCSIRD90

DCSIRD91

DCSIRD92

DCSIRD93

DCSIRD94

DCSIRD95

Object Number

4.2.7.0-1

4.2.8

4.2.8.0-1

4.2.9

4.2.9.0-1

4.2.10

4.2.10.0-1

4.2.11

4.2.11.0-1

4.2.12

4.2.12.0-1

4.2.13

4.2.13.0-1

4.2.14

4.2.14.0-1

4.2.15

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

The spacecraft shall meet all of its performance requirements with a pointing loss 0.0 dB for the DCPR uplink as the EIRP specification includes this loss. The satellite receive pointing loss will be determined by the contractor and incorporated into the spacecraft contractor's ICD.

4.2.8 Forward Error Correction

The spacecraft shall meet all of its performance requirements for 8-PSK DCPR uplinks with convolutional trellis code, rate 2/3 with constraint length 7. The DCPR uplinks are described in Applicable Document 1.

4.2.9 Uplink Data Rates

The spacecraft shall meet all of its performance requirements for the 8-PSK DCPR uplinks with information rate 300 or 1200 bps (transmitted rate after coding is 450 or 1800 bps). The associated symbol rate is 150 or 600 sps.

4.2.10 Uplink Modulation

The spacecraft shall meet all of its performance requirements for DCPR uplinks with 8- PSK modulation for 300 and 1200 bps signals.

4.2.11 Uplink Format

The spacecraft shall meet all of its performance requirements for DCPR uplinks with an NRZ-L format.

4.2.12 Uplink Phase Noise

The spacecraft shall meet all of its performance requirements for a DCPR uplink with a phase noise of less than 2.5° RMS when integrated from 2 Hz to a frequency equal to the modulation symbol rate.

4.2.13 Spacecraft Receive Coverage

The spacecraft shall meet all of its performance requirements for DCPR uplinks for all Data Collection Platforms with an antenna elevation angle >5°.

4.2.14 Rejection of Out of Band Signals

Reserved (CCR-X00192)

4.2.15 Transponder Intermediate Frequency Filtering

Requirements

Page 9 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD96

DCSIRD223

DCSIRD224

DCSIRD97

DCSIRD98

DCSIRD99

DCSIRD100

DCSIRD101

DCSIRD102

DCSIRD103

DCSIRD104

DCSIRD105

DCSIRD106

DCSIRD107

Object Number

4.2.15.0-1

4.2.16

4.2.16.0-1

4.3

4.3.0-1

4.3.1

4.3.1.0-1

4.3.2

4.3.2.0-1

4.3.3

4.3.3.0-1

4.3.4

4.3.4.0-1

4.3.5

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

The DCPR transponder shall filter the IF signals according to Table DCSIRD96.

Table DCSIRD96: Transponder Intermediate Frequency Filtering Requirements

Rejection (dB) Condition Offset from Center

Freq (kHz) 1 > +/- 200

20 < +/- 240 40 < +/- 750

(CCR-X00192)

4.2.16 DCPR Interference Level to CDA TLM Downlink (CCR-

X00192)

The DCPR transponder noise power level in ALC mode with and without transponder input signal shall be at least 16 dB lower than the CDA TLM signal level in CDA TLM signal bandwidth. (CCR-X00192)

4.3 Downlink DCPR Interface Requirements

This section describes the spacecraft to ground (downlink) requirements. The DCPR downlink will be received by the WCDAS/CBU and other ground terminals within the GeoXO antenna footprint.

4.3.1 Downlink Center Frequency

The spacecraft shall meet all of its performance requirements when transmitting to WCDAS and CBU receivers with a center frequency of 1691.900 and 1692.200 MHz for the domestic and international bands respectively.

4.3.2 Ground Antenna G/T and Spacecraft EIRP

The ground station antennas have a clear sky G/T (at 5° elevation angle) of 15.0 dB/K or greater. The EIRP required to meet all performance requirements when transmitting to ground antennas shall be determined by the contractor and incorporated into the spacecraft contractor's ICD.

4.3.3 Spacecraft Transmit Coverage

The spacecraft shall meet all of its performance requirements when transmitting to receivers with antenna elevation angles equal to or greater than 5 degrees (from anywhere between 75 deg West and 137 deg West). (CCR-X00092A) (CCR-X00161)

4.3.4 DCPR Downlink Polarization

The contractor shall select the spacecraft transmit polarization and incorporate this into the spacecraft contractor's ICD.

4.3.5 DCPR Receive Eb/No

Page 10 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD108

DCSIRD109

DCSIRD110

DCSIRD111

DCSIRD112

DCSIRD113

DCSIRD114

DCSIRD115

DCSIRD116

DCSIRD117

DCSIRD118

DCSIRD119

DCSIRD120

DCSIRD121

DCSIRD122

DCSIRD123

Object Number

4.3.5.0-1

4.3.6

4.3.6.0-1

4.3.7

4.3.7.0-1

4.3.8

4.3.8.0-1

4.3.9

4.3.9.0-1

4.3.9.0-2

4.3.9.0-3

4.3.9.1

4.3.9.1.0-1

4.3.9.1.0-2

4.3.9.1.0-3

4.3.9.1.0-4

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

The spacecraft shall meet all of its performance requirements when transmitting to WCDAS and CBU receivers which require an Eb/No of 11.0 dB (including ground implementation loss but not including spacecraft implementation loss) to meet the required BER.

4.3.6 Downlink Atmospheric Loss

The spacecraft shall meet all of its performance requirements with a downlink atmospheric attenuation loss of 2.5 dB (based on 99.99% one-way annual availability including scintillation).

4.3.7 Downlink Pointing Loss

The satellite transmit pointing loss shall be determined by the contractor and incorporated into the spacecraft contractor's ICD.

4.3.8 Downlink Polarization Loss

The downlink polarization loss shall be determined by the contractor and incorporated into the spacecraft contractor's ICD.

4.3.9 Gain Control Modes and High Power Amplifier (HPA)

Telemetry

The DCPR link shall have two gain control modes, an Automatic Level Control (ALC) mode and a fixed gain mode.

The gain control modes shall be selectable by ground command.

Critical DCPR HPA telemetry shall be provided to the ground operators via the telemetry downlink in order to determine the health of the flight HPAs and for diagnostics. The critical HPA telemetry list will be provided in the spacecraft contractor’s ICD.

4.3.9.1 Automatic Level Control Mode

The DCPR ALC shall produce an output power at the operational level with no additional uplink except thermal noise.

The DCPR ALC shall maintain output power to within 1 dB peak-to-peak over the life of the satellite from a minimum of two inputs at 41 dBm to a maximum of 500 inputs at 41 dBm. To meet this requirement ground commanded gain compensation to adjust for life time changes (e.g., temperature and aging) is permitted.

The DCPR ALC when driven by a step increase in the input power level corresponding to a step from minimum drive necessary for measurement to any and all drive levels up to the dynamic range maximum, the amplitude and phase responses of the repeater shall be within ± 1.0 dB and ±3 of steady state values within 10 ms.

The DCPR ALC, when driven by a step decrease in the input power level corresponding to a step from the dynamic range maximum to the lowest drive level sufficient to measure the phase noise, the amplitude and phase responses of the repeater shall be within ± 1.0 dB and ±3 of steady state values in 250 - 450 ms.

Page 11 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD124

DCSIRD125

DCSIRD126

DCSIRD127

DCSIRD128

DCSIRD129

DCSIRD130

Object Number

4.3.9.1.0-5

4.3.9.2

4.3.9.2.0-1

4.3.10

4.3.10.0-1

4.3.11

4.3.11.0-1

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

The DCPR ALC mode shall be commandable with step resolution less than or equal to

0.5 dB over the dynamic range.

4.3.9.2 Fixed Gain Mode

The DCPR fixed gain mode shall be commandable with step resolution less than or equal to 1.5 dB over the dynamic range.

4.3.10 DCPR Terminal Phase Noise

The spacecraft shall meet all of its performance requirements when transmitting to a ground receiver in the antenna footprint with less than 2° RMS of phase noise when integrated from 2 Hz to a frequency equal to the modulation symbol rate.

4.3.11 DCPR Transponder NPR

The DCPR transponder noise power ratio (NPR) shall be at least 25 dB.

Page 12 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD140

DCSIRD142

DCSIRD143

DCSIRD144

DCSIRD145

DCSIRD146

DCSIRD147

DCSIRD148

Object Number

5.0-1

5.0-2

5.1

5.1.0-1

5.1.1

5.1.1.0-1

5.1.1.0-2

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

5 DCPC Link Interface Requirements (CCR-X00161)

This section describes DCPC uplink and downlink requirements. (CCR-X00161)

The DCPC service shall simultaneously meet all of its requirements under worst case operational conditions over the life of the satellite, at edge of coverage, and over the full dynamic uplink power range. (CCR-X00161)

5.1 General DCPC Requirements (CCR-X00161)

This section provides requirements that apply to both DCPC uplinks and the downlink.

(CCR-X00161)

5.1.1 DCPC Requirements Summary (CCR-X00161)

This section describes general DCPC uplink and downlink link requirements. (CCR- X00161)

The DCPC data link requirements are summarized in the table below. (CCR-X00161)

DCPC Link Requirements Table

DCPC Uplink Transmit Requirement

Center frequencies GeoI-East

2032.775 MHz

GeoI-West

2032.825 MHz

EIRP 73 to 83 dBm Polarization RHCP Information data rate 306.1 bps before coding Modulation QPSK/CDMA Coding Reed-Solomon block code (255,223) with I=2 Chip rate 22.225 kchips/sec Channel bandwidth 100 kHz Number of simultaneous uplinks 1 Transmit filter Square Root Raised Cosine, α = 1.0

Satellite Receive Minimum receive G/T Contractor specified (dB/K) Antenna coverage WCDAS/CBU

Satellite Transmit Center frequency GeoI-East

468.775 MHz

GeoI-West

468.825 MHz

EIRP Contractor specification (dBm) Polarization RHCP Word Error Rate 1 x 10-4

Ground Receive Polarization RHCP Ground receive G/T - 26 dB/K DRGS elevation angle 5º Required Eb/No 11 dB

Page 13 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD149

DCSIRD150

DCSIRD151

DCSIRD152

DCSIRD153

DCSIRD154

DCSIRD155

DCSIRD156

DCSIRD157

DCSIRD158

DCSIRD159

DCSIRD160

DCSIRD161

DCSIRD162

DCSIRD163

DCSIRD164

DCSIRD165

DCSIRD166

DCSIRD167

Object Number

5.1.2

5.1.2.0-1

5.1.3

5.1.3.0-1

5.2

5.2.0-1

5.2.1

5.2.1.0-1

5.2.2

5.2.2.0-1

5.2.3

5.2.3.0-1

5.2.4

5.2.4.0-1

5.2.5

5.2.5.0-1

5.2.6

5.2.6.0-1

5.2.7

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

5.1.2 Link Margin Requirement (CCR-X00161)

The spacecraft shall provide a link margin of 2 dB for the DCPC link over the life of the satellite and over the coverage. (CCR-X00161)

5.1.3 DCPC End-to-End BER (CCR-X00161)

The BER shall be less than 1x 10-5 after decoding. (CCR-X00161)

5.2 Uplink DCPC RF Interface Requirements (CCR-X00161)

This section describes the ground to spacecraft (uplink) requirements. (CCR-X00161)

5.2.1 Uplink Center Frequency and Frequency Stability (CCR-

X00161)

The spacecraft shall meet all of its performance requirements for DCPC uplinks received in a 100 kHz bandwidth, with GeoI-East at 2032.775 MHz and with GeoI-West at

2032.825 MHz and maintained to one part in 108. (CCR-X00161)

5.2.2 Uplink EIRP (CCR-X00161)

The spacecraft shall meet all of its performance requirements for a DCPC from WCDAS or CBU with uplink EIRP of 73 dBm to 83 dBm. (CCR-X00161)

5.2.3 Uplink G/T (CCR-X00161)

The value for the spacecraft Gain-to-Noise Temperature Ratio (G/T) to meet the performance requirements shall be determined by the spacecraft contractor and incorporated into the spacecraft contractor's ICD. (CCR-X00161)

5.2.4 Uplink Polarization (CCR-X00161)

WCDAS and CBU antennas will have uplinks with RHCP polarization with axial ratio of 1.5 dB. The spacecraft contractor shall select the spacecraft receive polarization and incorporate this into the spacecraft contractor's ICD. (CCR-X00161)

5.2.5 Uplink Atmospheric Loss (CCR-X00161)

The spacecraft shall meet all of its performance requirements with an atmospheric attenuation loss of 1.0 dB on the uplink (based on 99.99% one-way annual availability including scintillation). (CCR-X00161)

5.2.6 Uplink Polarization Loss (CCR-X00161)

The satellite receive polarization loss shall be determined by the contractor and incorporated into the spacecraft contractor's ICD. (CCR-X00161)

5.2.7 Uplink Pointing Loss (CCR-X00161)

Page 14 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD168

DCSIRD169

DCSIRD170

DCSIRD171

DCSIRD172

DCSIRD173

DCSIRD174

DCSIRD175

DCSIRD176

DCSIRD177

DCSIRD178

DCSIRD179

DCSIRD180

DCSIRD181

DCSIRD182

DCSIRD183

DCSIRD184

DCSIRD185

Object Number

5.2.7.0-1

5.2.8

5.2.8.0-1

5.2.9

5.2.9.0-1

5.2.10

5.2.10.0-1

5.2.11

5.2.11.0-1

5.2.12

5.2.12.0-1

5.2.13

5.2.13.0-1

5.2.14

5.2.14.0-1

5.2.14.0-2

5.2.14.0-3

5.2.15

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

The WCDAS and CBU pointing loss will be 0.5 dB for the DCPC uplink. The satellite receive pointing loss shall be determined by the contractor and incorporated into the spacecraft contractor's ICD. (CCR-X00161)

5.2.8 Forward Error Correction (CCR-X00161)

The spacecraft shall meet all of its performance requirements for a DCPC uplink with a Reed-Solomon block code (255,223) Forward Error Correction (FEC) with interleave 2.

This code will comply with Section 4 of CCSDS 131.0-B-4 [Applicable Document 5]. (CCR- X00161)

5.2.9 Uplink Data Rate (CCR-X00161)

The spacecraft shall meet all of its performance requirements for DCPC uplinks with information data rate 306.1 bps and transmit encoded data rate of 350 sps. (CCR- X00161)

5.2.10 Uplink Modulation (CCR-X00161)

The spacecraft shall meet all of its performance requirements for DCPC uplinks with QPSK/CDMA modulation. Either BPSK or QPSK modulation may be used for spacecraft testing. The same chip rate, information rate, and coding as specified elsewhere in this document will be used for satellite testing for either modulation. (CCR-X00161)

5.2.11 Uplink Chip Rate (CCR-X00161)

The spacecraft shall meet all of its performance requirements for DCPC uplinks with a chip rate of 22.225 kchips/sec. (CCR-X00161)

5.2.12 Uplink Channel Bandwidth (CCR-X00161)

The spacecraft shall meet all of its performance requirements for DCPC uplinks with channel bandwidth of 100 kHz (composite of GeoI-East and GeoI-West). (CCR-X00161)

5.2.13 Uplink Format (CCR-X00161)

The spacecraft shall meet all of its performance requirements for DCPC uplinks with a NRZ-M format. (CCR-X00161)

5.2.14 DCPC Unwanted Emissions (CCR-X00161)

The spacecraft shall meet all of its performance requirements for a DCPC uplink with a square root raised cosine filter with an excess bandwidth factor of 1.0. (CCR-X00161)

The Ground Segment will provide the DCPC uplink and the unwanted emissions outside the necessary DCPC uplink bandwidth will not exceed 33 dBsd. (CCR-X00161)

The unwanted emissions from the spacecraft HPA outside the necessary DCPC downlink bandwidth shall not exceed 25 dBsd. (CCR-X00161)

5.2.15 Uplink Phase Noise (CCR-X00161)

Page 15 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD186

DCSIRD187

DCSIRD188

DCSIRD189

DCSIRD190

DCSIRD191

DCSIRD192

DCSIRD193

DCSIRD194

DCSIRD195

DCSIRD196

DCSIRD197

DCSIRD198

DCSIRD199

DCSIRD200

DCSIRD201

DCSIRD202

Object Number

5.2.15.0-1

5.2.16

5.2.16.0-1

5.3

5.3.0-1

5.3.1

5.3.1.0-1

5.3.2

5.3.2.0-1

5.3.3

5.3.3.0-1

5.3.4

5.3.4.0-1

5.3.4.0-2

5.3.5

5.3.5.0-1

5.3.6

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

The spacecraft shall meet all of its performance requirements for a DCPC uplink with a phase noise of less than 2° RMS when integrated from 10 Hz to a frequency equal to the chip rate. (CCR-X00161)

5.2.16 Spacecraft Receive Coverage (CCR-X00161)

The spacecraft shall meet all of its performance requirements when receiving an uplink from either the WCDAS or the CBU. (CCR-X00161)

5.3 Downlink DCPC Interface Requirements (CCR-X00161)

This section describes the spacecraft to ground (downlink) requirements. The DCPC downlink will be received by the DCP terminals. (CCR-X00161)

5.3.1 Downlink Center Frequency (CCR-X00161)

The spacecraft shall meet all of its performance requirements for DCPC when transmitting to a DCP with center frequency at 468.775 MHz for GeoI-East and 468.825 MHz for GeoI-West. (CCR-X00161)

5.3.2 DCP Receive Antenna G/T and Spacecraft EIRP (CCR-

X00161)

DCP receive antennas have a clear sky G/T (at 5° elevation angle) of -26.0 dB/K or greater. The EIRP required to meet all performance requirements when transmitting to DCP antennas shall be determined by the contractor and incorporated into the spacecraft contractor's ICD. (CCR-X00161)

5.3.3 Spacecraft Transmit Coverage (CCR-X00161)

The spacecraft shall meet all of its performance requirements when transmitting to DCP receivers with antenna elevation angles equal to or greater than 5 degrees, WCDAS, and

CBU. (CCR-X00161)

5.3.4 DCPC Downlink Polarization (CCR-X00161)

The spacecraft shall meet all of its performance requirements when transmitting to a DCP antenna with RHCP polarization with axial ratio of 4.0 dB. (CCR-X00161)

The contractor shall select the spacecraft transmit polarization and incorporate this into the spacecraft contractor's ICD. (CCR-X00161)

5.3.5 DCPC Receive Eb/No (CCR-X00161)

The spacecraft shall meet all of its performance requirements when transmitting to a DCPC receiver which requires an Eb/No of 11.0 dB (including ground implementation loss but not including spacecraft implementation loss) to achieve the required BER. (CCR- X00161)

5.3.6 Downlink Atmospheric Loss (CCR-X00161)

Page 16 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD203

DCSIRD204

DCSIRD205

DCSIRD206

DCSIRD207

DCSIRD208

DCSIRD209

DCSIRD210

DCSIRD211

DCSIRD212

DCSIRD213

DCSIRD214

DCSIRD215

DCSIRD216

DCSIRD217

DCSIRD218

DCSIRD219

DCSIRD220

DCSIRD221

Object Number

5.3.6.0-1

5.3.7

5.3.7.0-1

5.3.7.0-2

5.3.8

5.3.8.0-1

5.3.9

5.3.9.0-1

5.3.9.0-2

5.3.9.0-3

5.3.9.1

5.3.9.1.0-1

5.3.9.2

5.3.9.2.0-1

5.3.10

5.3.10.0-1

5.3.11

5.3.11.0-1

5.3.11.0-2

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

The spacecraft shall meet all of its performance requirements with a downlink atmospheric attenuation loss of 0.7 dB (based on 99.99% one-way annual availability including scintillation). (CCR-X00161)

5.3.7 Downlink Pointing Loss (CCR-X00161)

The spacecraft shall meet all of its performance requirements with a pointing loss of 0.0 dB for the DCP receive antenna. (CCR-X00161)

The satellite transmit pointing loss shall be determined by the contractor and incorporated into the spacecraft contractor's ICD. (CCR-X00161)

5.3.8 Downlink Polarization Loss (CCR-X00161)

The downlink transmit polarization loss shall be determined by the contractor and incorporated into the spacecraft contractor's ICD. (CCR-X00161)

5.3.9 Gain Control Modes and HPA Telemetry (CCR-X00161)

The DCPC link shall have two gain control modes, an Automatic Level Control (ALC) mode and a fixed gain mode. (CCR-X00161)

The gain control modes shall be selectable by ground command. (CCR-X00161)

Critical DCPC HPA telemetry shall be provided to the ground operators via the telemetry downlink in order to determine the health of the flight HPAs and for diagnostics. The critical HPA telemetry list will be provided in the spacecraft contractor’s ICD. (CCR- X00161)

5.3.9.1 Automatic Level Control Mode (CCR-X00161)

The DCPC ALC shall maintain an output power to within 1 dB peak to peak over the life of the satellite for inputs from 2 dB less than the minimum dynamic range to the maximum of the dynamic range. (CCR-X00161)

5.3.9.2 Fixed Gain Mode (CCR-X00161)

The DCPC fixed gain mode shall be commandable with step resolution less than or equal to 1.5 dB over the dynamic range. (CCR-X00161)

5.3.10 DCPC Terminal Phase Noise (CCR-X00161)

The spacecraft shall meet all of its performance requirements when transmitting to a DCP receiver with less than 2° RMS of phase noise when integrated from 10 Hz to a frequency equal to the chip rate. (CCR-X00161)

5.3.11 DCPC Capacity (CCR-X00161)

The DCPC transponder shall be designed to have a capacity for one signal. (CCR- X00161)

The DCPC spacecraft transmission shall be capable of being enabled or disabled by ground command. (CCR-X00161)

Page 17 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD222

Object Number

5.3.11.0-3

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

The execution of the DCPC RF enable/disable ground command shall not interrupt operation of any other GeoXO service. (CCR-X00161)

Page 18 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD131

DCSIRD132

Object Number

6.0-1

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

6 Abbreviations and Acronyms

ALC Automatic Level Control BER Bit Error Rate bps Bits Per Second BPSK Binary Phase Shift Keying CBU Consolidated Backup CDMA Code Division Multiple Access dB decibel dBm decibel-milliwatts dBsd decibel spectral density DCP Data Collection Platform DCPC Data Collection Platform Commands DCPR Data Collection Platform Report DCPRS Data Collection Platform Radio Set DCS Data Collection System Eb/N0 Energy per bit to noise density ratio EIRP Effective Isotropically Radiated Power FDMA Frequency Division Multiple Access FEC Forward Error Correction GeoXO Geostationary and eXtended Orbits GOES Geostationary Operational Environmental Satellite G/T Gain-to-Noise Temperature Ratio (dB/K) GXI Imager GXS Sounder HPA High Power Amplifier Hz Hertz ICD Interface Control Document IDCS International Data Collection System IRD Interface Requirements Document ITU International Telecommunications Union K Kelvin kHz 1 x 103 Hertz L-Band 1.0 - 2.0 GHz Frequency Band MHz 1 x 106 Hertz NOAA National Oceanic and Atmospheric Administration NPR Noise Power Ratio NRZ-M Non-Return-to-Zero mark NSOF NOAA Satellite Operations Facility NTIA National Telecommunications and Information Agency OCX Ocean Color ORTT&C Orbit Raising, Tracking, Telemetry, and Command PFD Power Flux Density ppm parts per million PSK Phase Shift Keying QPSK Quadrature Phase Shift Keying RA Radio Astronomy RF Radio Frequency RHCP Right Hand Circularly Polarized RMS Root Mean Square RR Radio Regulation

Page 19 of 19 Printed Thursday, July 6, 2023

ID

DCSIRD132

Object Number

6.0-1

418-XO-IRD-0044, RM Version, Geostationary eXtended Observations (GeoXO) SS to Data Collection System (SS-DCS) Interface

Requirements Document (IRD)

S-Band 2 - 4 GHz Frequency Band SOCC Satellite Operations Control Center sps Symbols Per Second SS Space Segment WCDAS Wallops Command and Data Acquisition Station

(CCR-X00092A) (CCR-X00161)

Effective Date: March 20, 2023 418-XO-IRD-0044 Responsible Organization: GeoXO Flight Project/Code 418 Baseline Version 1.2

To verify the correct version of this document, please contact the GeoXO Series Configuration Management Office.

Document Change Record (DCR)

CCR GeoXO#: X00054 Rev: Title: 418-XO-IRD-0044: baseline GeoXO_SS-DCS Contract # N/A GeoXO S/C: GeoXO Effectivity: SC CCB Status: Approved Doc #: 418-XO-IRD-0044 CCB Date: 02/10/2022 Doc Version: 1.0 Contract Mod#: N/A DOORs Version: 1.0 Doc Change Date: Feb. 10, 2022 DOORs ID #: 1.0

CCR GeoXO#: X00092A Rev: Title: SS to Data Collection System (SS-DCS): Update for CONUS Contract # N/A GOES S/C: GeoXO Effectivity: SC CCB Status: Approved Doc #: 418-XO-IRD-0044 CCB Date: 07/15/2022 Doc Version: 1.1 Contract Mod#: N/A DOORs Version: 1.1 Doc Change Date: July 15, 2022 DOORs ID #: Modify: DCSIRD59 (4.1.1.0-2), 104 (4.3.3.0-1), 132 (6.0-1)

CCR GeoXO#: X00161 Rev: Title: DCS IRD: Addition of the DCPC Service and update DCPR to Hemispherical

Coverage Contract #: 80GSFC22CA055 80GSFC22CA059 GOES S/C: GeoXO Effectivity: SC CCB Status: Approved Doc #: 418-XO-IRD-0044 CCB Date: 03/09/2023 Doc Version: 1.2 Contract Mod#: P0006; 7 DOORs Version: 1.2 Doc Change Date: Mar. 20, 2023 DOORs ID #: Modify: DCSIRD7 (1.1.2.0-2), 8 (1.1.2.0-3), 11 (1.2.0-1), 13 (1.3.0-1), 24

(2.0-1), 29 (2.0-9), 30 (2.0-10), 32 (3.0-1), 33 (3.0-2), 37 (3.2.0-1), 39 (3.3.0-1), 43 (3.5.0- 1), 45 (3.6.0-1), 47 (3.7.0-1), 48 (3.8), 59 (4.1.1.0-2), 104 (4.3.3.0-1), 132 (6.0-1)

Add: DCSIRD135 (3.7.0-2 ), 136 (2.0-11), 137 (2.0-3), 138 (2.0-5), 133 (2.0-7), 134 (3.5.0-2), 139 (3.6.0-2), 141 (3.8.0-2), 140 (5), 142 (5.0-1), 143 (5.0-2), 144 (5.1), 145 (5.1.0-1), 146 (5.1.1), 147 (5.1.1.0-1), 148 (5.1.1.0-2), 149 (5.1.2), 150 (5.1.2.0-1), 151 (5.1.3), 152 (5.1.3.0-1), 153 (5.2), 154 (5.2.0-1), 155 (5.2.1), 156 (5.2.1.0-1), 157 (5.2.2), 158 (5.2.2.0-1), 159 (5.2.3), 160 (5.2.3.0-1), 161 (5.2.4), 162 (5.2.4.0-1), 163 (5.2.5), 164 (5.2.5.0-1), 165 (5.2.6), 166 (5.2.6.0-1), 167 (5.2.7), 168 (5.2.7.0-1), 169 (5.2.8), 170 (5.2.8.0-1), 171 (5.2.9), 172 (5.2.9.0-1), 173 (5.2.10), 174 (5.2.10.0-1), 175 (5.2.11), 176 (5.2.11.0-1), 177 (5.2.12), 178 (5.2.12.0-1), 179 (5.2.13), 180 (5.2.13.0-1), 181 (5.2.14), 182 (5.2.14.0-1), 183 (5.2.14.0-2), 184 (5.2.14.0-3), 185 (5.2.15), 186 (5.2.15.0-1), 187 (5.2.16), 188 (5.2.16.0-1), 189 (5.3), 190 (5.3.0-1), 191 (5.3.1), 192 (5.3.1.0-1), 193 (5.3.2), 194 (5.3.2.0-1), 195 (5.3.3), 195=6 (5.3.3.0-1), 197 (5.3.4), 198 (5.3.4.0-1), 199 (5.3.4.0-2), 200 (5.3.5), 201 (5.3.5.0-1), 202 (5.3.6), 203 (5.3.6.0-1), 204 (5.3.7), 205 (5.3.7.0-1), 206 (5.3.7.0-2), 207 (5.3.8), 208 (5.3.8.0-1), 209 (5.3.9), 210 (5.3.9.0-1), 211 (5.3.9.0-2), 212 (5.3.9.0-3), 213 (5.3.9.1), 214 (5.3.9.1.0-1), 215 (5.3.9.2), 216 (5.3.9.2.0- 1), 217 (5.3.10), 218 (5.3.10.0-1), 219 (5.3.11), 220 (5.3.11.0-1), 221 (5.3.11.0-2), 222 (5.3.11.0-3)

Modify: DCSIRD40 (3.4); 41 (3.4.0-1); changed to “Reserved” [i.e., replaced original text with “Reserved’; DI retains for potential future use;]

CM Note: Phase A SC contract awarded; Contract numbers and contract mods are added.

CCR GeoXO#: X00192 Rev: Title: DCSIRD: Updates from vendor and engineering suggested clarifications Contract # N/A GOES S/C: GeoXO Effectivity: SC CCB Status: Approved Doc #: 418-XO-IRD-0044 CCB Date: 06/29/2023 Doc Version: 1.3 Contract Mod#: N/A DOORs Version: 1.3 Doc Change Date: June 29, 2023 DOORs ID #: Modify: DCSIRD43 (3.5.0-1), 61 (4.1.3), 94 (4.2.14.0-1), 96 (4.2.15.0-1) Add: DCSIRD223 (4.2.16), 224 (4.2.16.0-1)