HR1 HR2 Feed Upgrade - DRAFT SOW 5-7-20.docx

National Oceanic and Atmospheric Administration (NOAA)

Hurricane Rated HR1 and HR2 Feed Upgrade Statement of Work (SOW)

May 7, 2020

Contents

1 OVERVIEW

The National Oceanic and Atmospheric Administration (NOAA), National Environmental Satellite, Data, and Information Service (NESDIS) Office of Satellite Ground Services’ (OSGS) mission is to sustain current NESDIS capabilities, to enable future capabilities, and to create an integrated ground enterprise. Satellite data acquisition from the Deep Space Climate Observatory (DSCOVR) and next generation weather imagery from the GOES-R series are mission critical NESDIS capabilities.

DSCOVR is NESDIS’ primary real-time solar storm warning system at LaGrange Point 1(L1) and monitors magnetic plasma emanating from the Sun. This data is provided as a real-time data stream to the NESDIS National Weather Service (NWS) customer, the Space Weather Prediction Center (SWPC). The data is used by SWPC to produce space weather forecasts, watches, warnings, and alerts.

The GOES-R Series provides advanced imagery and atmospheric measurements of Earth’s weather, oceans and environment, real-time mapping of total lightning activity, and improved monitoring of solar activity and space weather.

NESDIS Wallops Command and Data Acquisition Station (WCDAS) is the primary facility for DSCOVR and GOES-R Telemetry, Tracking, & Commanding (TT&C) capabilities.

NESDIS has identified the WCDAS 16.4 meter (m) Hurricane Rated (HR) antennas HR1 and HR2 to serve as the primary antenna for DSCOVR and primary/back up for Geostationary Operational Environmental Satellite R series (GOES-R) satellites. The HR1 and HR2 antennas require feed modifications to enable optimal long-term support to the DSCOVR and GOES-R missions while retaining coverage of the legacy GOES O/P missions.

The project scope for the HR1 and HR2 antennas shall have the Contractor

· Execute digital photogrammetry

· Perform physical optimization of the parabolic reflector

· Redesign the existing HR1 and HR2 feed

· Replace specified Antenna RF System Components

· Conduct Site Acceptance Testing

· Provide Site Training and Documentation

The Contractor shall perform the above-mentioned scope of work to optimize the HR1 and HR2 antennas to support DSCOVR, GOES-R and GOES O/P mission requirements as specified in this SOW.

SOW-OV-01: The Contractor shall deliver a Requirements Compliance traceability matrix [SE 1] with their proposal.

To maintain operational capabilities, at least one antenna is required to remain operational while the other antenna is being upgraded. The order of upgrades shall be HR2 and then HR1.

The Government will provide access to existing drawings and photos of the 16.4 M antennas and their subassemblies. Offerors are welcome to visit Wallops for a period as defined in the solicitation to review all documents and perform a visual inspection of the antennas and their related subsystems. Any special testing desired by Offerors shall be coordinated through the Contract Officer's Representative (COR)/Program Manager (PM) or their designated representative at least two weeks before the visit. An onsite inspection is highly recommended prior to a response to the RFP.

1.1 References

· NESDIS No. S24.801 Preparation of Operation and Maintenance Manuals March 1, 1974 (Revised 02/02/04)

· NESDIS No. S24.802 General Requirements for Ground Electronic Equipment, April 1997 (Revised 02/02/04)

· NESDIS No. S24.803 Cable and Wire Identification, March 1997 (Revised 07/15/00) NESDIS No. S24.804 General Requirements for Training on Electronics Equipment (Revised 02/02/04)

· NESDIS No. S24.805 Spare Parts 12/10/74 (Revised 02/02/04)

· NESDIS No. S24.809 Grounding Standard December 01, 1989 (Revised 12/22/2000)

· OSGS Risk, Issue, and Opportunity Management Process Document (10/13/2016)

· EIA-411A 6.6.2 Radio Star Method

2 HR1 and HR2 ANTENNA FEED UPGRADE REQUIREMENTS

SOW-HR-G01: The Contractor shall redesign the HR1 and HR2 antenna feed and related assemblies located at WCDAS to support multiple satellite mission requirements for DSCOVR, GOES-R and GOES O/P.

2.1 Antenna Surface and Optimization Assessments

The antenna parabolic reflectors are 20 years old and need antenna surface optimization assessments with photogrammetry to determine corrective actions for any performance degradation due to reflector warpage or other damage and recommend improved efficiencies.

SOW-HR-G02: For each antenna the Contractor shall perform a preliminary Antenna Surface Assessment with digital photogrammetry. The assessments shall be completed within forty-five days of contract award.

SOW-HR-G03: For each antenna the Contractor shall perform a preliminary Gain-to-Noise-Temperature (G/T) test. The Contractor shall include a G/T testing methodology description [Deliverable HW 1] with their proposal for Government approval.

SOW-HR-G04: For each antenna the Contractor shall deliver a Preliminary Antenna Surface Assessment Report [Deliverable HW 2] within two weeks after the preliminary assessment, containing at a minimum, the photogrammetry results, recommended corrective actions and preliminary G/T results.

SOW-HR-G05: For each antenna, the Contractor shall perform corrective actions necessary to optimize the alignment and surface accuracy of the reflector and sub-reflector based on the results documented in the preliminary Antenna Surface Assessment Report.

SOW-HR-G06: For each antenna the Contractor shall perform a final Antenna Surface Assessment with digital photogrammetry within ninety days of the preliminary Antenna Surface Assessment.

SOW-HR-G07: For each antenna the Contractor shall perform a final Gain-to-Noise-Temperature (G/T) test. The Contractor shall utilize the same G/T testing methodology employed in requirement SOW-HR-G03.

SOW-HR-G08: For each antenna, the Contractor shall deliver a Final Antenna Surface Assessment Report [Deliverable HW 3] due two weeks after the final Antenna Surface Assessment containing comparative results of both photogrammetry and G/T tests, highlighting the optimization and realized G/T improvements. The final Surface Assessment Report shall illustrate and detail how performed alignment optimization meets or exceeds the requirements in this SOW.

2.2 Antenna System RF System Requirements

SOW-HR-G09: The Contractor shall design, fabricate, acquire, install, and test parts, assemblies, and subassemblies of the HR1 and HR2 feed upgrades to enable the antenna systems to meet the requirements specified in this SOW.

SOW-HR-G010: The Contractor shall redesign the HR1 and HR2 feed to Right Hand Circular Polarized (RHCP) and Left Hand Circular Polarized (LHCP).

SOW-HR-G11: The Contractor shall ensure the S-band G/T shall be a minimum of 29.0 dB/K @ 5 degrees elevation.

SOW-HR-G12: The Contractor shall ensure the L-band G/T shall be a minimum of 26.0 dB/K @ 5 degrees elevation.

2.3 Antenna RF System Components

SOW-HR-G13: The Contractor shall replace the following HR1 and HR2 16.4m antenna RF System components:

· The Contractor shall replace the existing S-Band LNA plate assembly with a 2/3 redundant S-Band LNA plate assembly

· The Contractor shall replace the existing L-Band LNA plate assembly with a 2/3 redundant L-Band LNA plate assembly SOW-HR-G14: The Contractor shall ensure antenna RF system components and spares meet requirements specified in this SOW.

SOW-HR-G15: The Contractor shall determine the absolute time delay of signal transmission through all possible paths in the feed assembly with an overall accuracy of better than one nano-second (ns).

SOW-HR-G16: The Contractor shall ensure the feed design and final installation shall maintain the overall existing HR antenna system balance of the antenna feed mounting after completion of the upgrade.

3 SYSTEM SUPPORT REQUIREMENTS

3.1 Antenna Environmental Requirements

SOW-HR-SS01: The antenna shall operate within the guidance of the environmental conditions specified in Paragraphs 3.14.1 through 3.14.7 of NOAA/NESDIS Standard No. S24.802.

SOW-HR-SS02: The Contractor shall ensure the antenna feed mounting system conforms to the environmental requirements detailed in Appendix A.5.

3.2 Spare Parts

03: The Contractor shall deliver one spare S-Band LNA [Deliverable HW 4] conformant to LNA Plate Assembly requirements delineated in Section 2.3 requirement SOW-HR-G13.

04: The Contractor shall deliver one spare L-Band LNA [Deliverable HW 5] conformant to LNA Plate Assembly requirements delineated in Section 2.3 requirement SOW-HR-G13.

05: The Contractor shall deliver one spare low loss waveguide switch [Deliverable HW 6] conformant to LNA Plate Assembly requirements delineated in Section 2.3 requirement SOW-HR-G13.

SOW-HR-SS06: The Contractor shall ensure delivered spare parts are in accordance with the NESDIS No. S24.805 Spare Parts standard.

SOW-HR-SS07: The Contractor shall provide a recommended list of spare parts [Deliverable HW 7] with the final deliverable antenna feeds.

SOW-HR-SS08: The Contractor shall ensure spare parts are configured to be installed into operations in a timely manner and shall be tested, available and delivered.

3.3 Training

SOW-HR-SS09: The Contractor shall deliver a training plan [Deliverable TO 1] six months after Contract Award and provide training two weeks after SAT using guidance in Standard S24.804. Upon Government approval of the training plan, the Contractor shall develop courses of instruction.

SOW-HR-SS10: The Contractor shall provide site training for twelve people following the installation of the new feed assemblies. Training on the new feed assemblies shall include how to test alignment and preventative and corrective maintenance.

4 PROGRAM REQUIREMENTS

4.0 Project Planning

SOW-HR-P01: The Contractor shall provide an initial Project Plan [Deliverable PM 1] with the proposal and updated within two weeks of contract award that includes

· Scope management.

· Requirements management.

· Schedule management.

· Financial management.

· Quality management.

· Resource management.

SOW-HR-P02: The Contractor shall conduct a Project Kickoff meeting [Deliverable PM 2] two weeks after contract award including, but not be limited to:

· Introductions

· Project Scope

· Project Approach

· Project Schedule

· Project Resources

· Project Deliverables

· Project Assumptions/Risks

4.1 Project Schedule

SOW-HR-P03: The Contractor shall provide a baselined Project Management Schedule (PMS) [Deliverable PM 3] submitted within thirty days of project kickoff and include:

· Project milestones (including, but not be limited to: procurements, preliminary and critical design review, testing milestones, and development items of interest)

· Project schedule assumptions

· Project resources including program management, teams or sub-Contractors participating in the design process, engineering, manufacturing, test support, and quality assurance.

4.2 Progress Reviews

SOW-HR-PO4: The Contractor shall provide Weekly Progress reports [Deliverable PM 4] by COB Wednesday each week including accomplishments and planned activities, an updated schedule, quality assurance metrics on progress, project assumptions, risks and key issues.

SOW-HR-P05: The Contractor shall provide Monthly Progress report [Deliverable PM 5] by the 5th day of the month and conduct a monthly Project Management Status Review (PMSR) [Deliverable PM 6] by the 10th day of the month. The PMSR support shall include meeting minutes and agendas specific to ongoing redesign activities. The location of the PMSR shall be mutually agreed upon based upon schedule milestone needs and may be conducted via teleconference with Government concurrence.

SOW-HR-P06: The Contractor shall provide a management section in the PMP report that contains the following:

· A milestone chart /progress schedule showing to date versus the anticipated progress for each major portion of the work (hardware and software tasks shall be individually divided)

· Contract issues and/or concerns

· A listing of any major software/hardware purchases throughout the reporting period

SOW-HR-P07: The Contractor shall provide a technical section in the PMP report that contains the following:

· Quality assurance metrics on testing and change requests

· Encountered problems and solutions

· Major requirement clarifications received during the preceding month from the COR/PM.

· Outstanding issues, concerns, or questions requiring government decision or guidance

· Supporting documentation on software and hardware systems activities and integration

· Planned activities for the following month

· Risks and risk mitigations

4.3 Documentation

SOW-HR-P08: The Contractor shall document all changes and deliver change request documentation at monthly progress reviews.

SOW-HR-PO9: All contract developed project documentation shall be prepared using guidance in NEDIS S24.801 and delivered to the government in electronic form via Kiteworks or other secure Government encrypted email. A final copy of all deliverables and associated documentation shall be provided in electronic form via Kiteworks or other secure Government encrypted email.

SOW-HR-PO10: The Contractor shall provide a complete set of drawings [Deliverable SE 2] for each feed and finished overall assembly as well as a detailed parts list identifying part number and Operational Equipment Manufacturer (OEM) for each part of the feed assemblies along with any other provided parts and/or hardware. The final project documentation shall be delivered two weeks after SAT.

SOW-HR-P11: Electronic project deliverables shall be delivered in the following formats detailed in Table 4.3-1 unless otherwise or approved by the COR/PM.

Database Delimited ASCII files accompanied by either database schema document defining tables and entries or XML schema and tagged definitions

Schematics and Drawings AutoCAD and Portable Document Format (PDF)

Table 4.3-1

4.4 Contract Type

This is a Firm-Fixed Price (FFP) type contract.

4.5 Period of Performance

The period of performance for this project is one hundred and four weeks, including warranty, as defined by Section 6 Deliverables.

4.6 Place of Performance

The primary place of performance will be at the Contractor site. The Contractor shall conduct monthly reviews via teleconference with Government approval or in person at the NOAA Satellite Operations Facility (NSOF) in Suitland, MD. Integration, installation and Site Acceptance Test activities shall be performed on-site at Wallops Command Data Acquisition Station (WCDAS).

4.7 Government Furnished Property/Information

The Government may provide access to specialized RF test equipment such as Spectrum Analyzers, Oscilloscopes, Signal Generators, voltmeters etc. on a pre-coordinated case-by-case basis, subject to work-site location availability, mission priority and cost considerations. The Government may also provide pre-coordinated assistance and operation of heavy equipment such as bucket trucks subject to work-site locational availability, mission priority and cost considerations.

4.8 Security

SOW-HR-P12: The Contractor shall comply with the IT Security requirements of the Department of Commerce (DOC) as outlined in Commerce Acquisition Regulation (CAR):

· CAR 1352.239-72, Security Requirements for Information Technology Resources (April 2010).

· CAR 1352.239-72, section (d) includes the DOC IT Security Program Plan, the NOAA IT Security Manual

· NESDIS IT Security Handbook. The Contractor shall also comply with FAR Clauses 52.204-21, 52.224-1, 52.224-2 and 52.239-1.

SOW-HR-P13: Contractor personnel shall be screened in accordance with the requirements for Moderate Risk contracts as specified by Commerce Acquisition Manual (CAM) 1337.70 section 2.2 (Oct 2015); specifically, in accordance with CAR 1352.237-70, Security Processing Requirements High or Moderate Risk Contracts (April 2010). Any access by contract personnel who are Foreign Nationals shall be in accordance with the requirements of CAR 1352.237-73, Foreign National Visitor and Guest Access to Departmental Resources (APR 2010).

SOW-HR-P14: The Contractor shall submit security forms required by CAR clause 1352.237-70 two weeks prior to each new contract employee’s start of work so that the NOAA staff has enough time to process requests for background checks, NOAA badges, and network access.

4.9 Configuration Management

SOW-HR-P15: The Contractor shall use a Government approved configuration management (CM) application and process.

4.10 Risk Management

SOW-HR-P16: The Contractor shall track, assess, categorize and format and deliver risks documentation [Deliverable PM 4/PM 5] with the weekly and monthly progress reports using guidance from the OSGS Risk, Issue, and Opportunity Management Process Document (10/13/2016)

5 QUALITY ASSURANCE

5.1 General Requirements

Unless otherwise specified, the Contractor is responsible for the verification and validation of requirements specified in this SOW. Except as otherwise specified, the Contractor may utilize his own facilities or any commercial laboratory acceptable to the COR/PM. The Government reserves the right to perform any or all the inspections set forth in the specifications where such inspections are deemed necessary to assure the supplies and/or services conform to prescribed requirements.

SOW-HR-QA01: The Contractor shall deliver a Quality Assurance Plan [Deliverable QA 1] within thirty days of contract kickoff, which will define quality assurance activities and procedures.

SOW-HR-QA02: The Contractor shall deliver a Project Quality Control Report [Deliverable QA 2] which shall contain quality assurance metrics [Deliverable QA 3] and delivered at the monthly Project Management Review (PMR) and other formal reviews. Metrics will include, but not be limited to, testing metrics, corrective actions with status, and hardware/software metrics associated with the design.

5.2 Design Reviews

SOW-HR-QA03: The Contractor shall conduct two formal design reviews, Preliminary Design Review (PDR) [Deliverable RE 1] within six months after contract award, and Critical Design Review (CDR) [Deliverable RE 2], no more than ten months after contract award. The design reviews shall address all requirements outlined in this SOW. The Contractor will not advance to the next phase of the life cycle until after Government approval of design reviews’ entrance and exit criteria.

SOW-HR-QA04: PDR and CDR documentation shall be provided to the COR/PM two weeks prior to the PDR and CDR events. Documentation shall include, but not be limited to

· Design and construction documentation to include electrical schematics and drawings.

· Major software modules, routines, and execution objectives.

· Performance requirements

· Quality assurance metrics

· Final Antenna Surface Assessment Report (at PDR and CDR)

· HR1 and HR2 Antenna System link budget (at PDR and CDR)

5.3 Testing Specifications

5.3.1 Test Planning

SOW-HR-QA05: The Contractor shall deliver a preliminary test plan [Deliverable IT 1] at PDR and an updated test plan [Deliverable IT 1] at CDR which contains plans for unit, subsystem/system, system integration, FAT and SAT test events.

SOW-HR-QA06: The Contractor shall deliver initial test procedures [Deliverable IT 2] thirty days in advance of FAT and SAT test events. The procedures are designed to demonstrate conformance with the specifications and shall be used by the Contractor for the corresponding test event. The Contractor shall provide final FAT and SAT test procedures two weeks prior to the TRR. No test shall commence until the final test procedures are approved by the Government.

SOW-HR-QA07: The Contractor shall define a Requirements Verification Traceability Matrix (RVTM) [Deliverable SE 3] due two weeks after contract award and updated and reported during all phases of the project.

SOW-HR-QA8: The Contractor shall demonstrate system compliance through verifications and validations as defined in the QASP using the RVTM.

5.3.2 Tests

SOW-HR-QA09: The Contractor shall conduct a program to test and demonstrate system compliance through validation and verification of requirements. Following the Contractor’s internal test plan and procedures, the Contractor shall perform the following hardware and software tests during the acceptance of the redesigned feed for the HR1 and HR2 antennas:

· Unit

· Subsystem/System

· System Integration

· FAT

· SAT

SOW-HR-QA10: The Contractor shall conduct formal tests events to include Factory Acceptance Test (FAT) and Site Acceptance Tests (SAT) for each HR1 and HR2 antenna.

SOW-HR-QA11: The Contractor shall conduct a formal Test Readiness Review (TRR) for each HR1 and HR2 antenna prior to beginning FAT and SAT.

SOW-HR-QA12: The Contractor shall conduct in-plant unit tests and demonstrate the required functionality and performance of individual system’s components and processes within each subsystem. The hardware tests shall include running diagnostic(s) for each component.

SOW-HR-QA13: The Contractor shall conduct in-plant subsystem/system tests and demonstrate required functionality and performance of the entire system utilizing simulated external devices.

SOW-HR-QA14: The Contractor shall conduct system integration tests, demonstrating proper interfacing, functionality, and performance with all RF components and external systems and equipment. These tests shall verify the system operations successfully integrated with other ground system components.

SOW-HR-QA15: The Contractor shall conduct FAT to fully demonstrate hardware and software compliance with performance and functional requirements. The Contractor shall provide the COR/PM a copy of the final FAT plans and procedures two weeks prior to the TRR. The final acceptance shall be in writing from the Government.

SOW-HR-QA16: The Contractor shall conduct SAT on site to fully demonstrate hardware and software compliance with performance and functional requirements. Acceptance of SAT testing shall be made after the satisfactory installation and completion in accordance with the approved procedures. The final acceptance shall be in writing from the Government.

SOW-HR-QA17: The Contractor shall apply an unmodulated test signal of at least 1 kW to the transmit input of each feed assembly for one hour while monitoring each LNA output to ensure the transmit signal does not cause any noise bursts in the receive bands. Acceptable limit shall be < 3dB above the Tx-off noise floor in a 100 kHz RBW at a 30 millisecond (ms) sweep rate.

SOW-HR-QA18: All Feed components between the horn and the LNAs or transmit couplers shall be measured for propagation time at the band edge and center frequencies, with an accuracy of 1 ns or better.

5.3.3 Test Conduct

SOW-HR-QA19: The Contractor shall clearly identify deviations from expected results, document the actual results, and obtain supporting data, where appropriate.

SOW-HR-QA20: The Contractor shall provide a method of debugging and testing developed software in an environment that simulates configurations and operating conditions.

SOW-HR-QA21: The Contractor shall provide a test director and a QA representative for FAT and SAT. The Government will witness each test and determine whether the test was fully compliant, partially compliant (retesting is required), or non-compliant. In the event of any non-compliance, the Contractor shall perform corrective actions to correct any discrepancies identified and, re-run the testing deemed necessary by the COR/PM (or their delegate).

SOW-HR-QA22: The Contractor shall submit electronic copies of test reports [Deliverable IT 3] containing results of FAT and SAT within two weeks of test completion. Test reports shall identify any deviations from the test procedures, rationale, and any alternative procedures followed.

5.4 Preparation for Delivery

SOW-HR-QA23: The Contractor shall ensure preservation and packaging shall protect against corrosion and deterioration and/or shock and vibration during shipment from the Contractor's plant to the destination and until installation. This degree of protection may conform to the manufacturer's commercial practice when such practice meets or exceeds these requirements.

SOW-HR-QA24: The Contractor shall ensure each unit of the equipment shall be substantially packed, including necessary bracing, to assure delivery in undamaged condition. Large parts, electrical and electronic assemblies, and other delicate mechanisms shall be packed in sturdy wooden crates or heavy boxes. Large structural items need not be completely packaged so long as they are adequately protected.

SOW-HR-QA25: The Contractor shall ensure each crate, box, or unit or equipment shipped as less than a truckload shall be legibly marked with consignee's name and address, Contractor's identification, contract number, and any additional required labeling. If shipment is by Contractor's vehicle these marking requirements are waived.

5.5 Warranty

SOW-HR-QA26: The Contractor shall guarantee each delivered antenna feed system, including all parts and spare parts guaranteed against faulty design, materials, and workmanship for a period of one (1) year after SAT. Should any defect in design, workmanship or material develop, the defective part(s) shall be replaced within thirty days with satisfactory part(s) by the Contractor to the installation location with Government approval and without expense to the Government.

SOW-HR-QA27: The Contractor shall be responsible for determining the cause of the failure and the subsequent redesign of components relating to warranty requirements. Failure due to poor workmanship, while not necessarily indicating poor design, will be considered in the same category as failure due to poor design.

SOW-HR-QA28: Redesigned replacements, including installation instructions and manual revisions shall be supplied and transportation prepaid, to the installation location or plant with a replacement plan, Government approval, and without expense to the Government.

SOW-HR-QA29: The Contractor shall state the number of years, after the warranty period, during which special or non-standard parts will be available for procurement by the Government.

6 DELIVERABLES

Deliver To

(SOW-OV-G01)

(SOW-HR-G03)

(SOW-HR-G04)

(SOW-HR-G08)

(SOW-HR-SS03)

One spare S-Band LNA

(SOW-HR-SS04)

One spare L-Band LNA

(SOW-HR-SS05)

One spare low loss waveguide switch

(SOW-HR-SS07)

(SOW-HR-SS09)

(SOW-HR-PO1)

(SOW-HR-P02)

(SOW-HR-P03)

(SOW-HR-P04)

(SOW-HR-P05)

(SOW-HR-P05)

(SOW-HR-P10)

(SOW-HR-P16)

(SOW-HR-QA01)

(SOW-HR-QA02)

(SOW-HR-QA02)

(SOW-HR-QA03)

(SOW-HR-QA03)

(SOW-HR-QA05)

(SOW-HR-QA05)

(SOW-HR-QA06)

(SOW-HR-QA07)

(SOW-HR-QA11)

(SOW-HR-QA22)

APPENDIX A: ANTENNA UPGRADE SPECIFICATIONS

Upgrade requirements for the Wallops 16.4M HR-2 series Antenna are set forth herein. The primary objective is to redesign the existing feed on HR1 and HR2 to enable fulfillment of the requirements stated herein.

A.1 HR1 and HR2 Radio Frequency S-Band and L-Band Requirements

SOW-HR-A01: The Contractor shall meet or exceed the HR1 and HR2 RF S-Band and L-band requirements detailed in Appendix A.

S-Band Requirements

Table A.1-1 L-Band Requirements

Operational Frequency Range (MHz)

1672-1695

N/A

Axial Ratio within 1 dB beam width (dB)

<=0.75

N/A

First Side-lobe Level (dB)

-14

N/A

Table A.1-2 SOW-HR-A02:The transmit input to the feed assembly shall include a 40 dB coupler with a Type N female coupled connector at the input to the polarization switch, to provide a sample for GFE ranging.

A.2 S-Band and L-Band LNA Assembly Upgrade Requirements

SOW-HR-A03: The Contractor shall provide LNAs control units with sufficient interconnection cable length between the LNA plate and LNA controller. LNA controller communications shall be ethernet TCP/IP.

SOW-HR-A04: The input to each LNA shall include a 40 dB coupler, located before the redundancy switches, to interface to GFE ranging and test equipment.

SOW-HR-A05: The output of each LNA shall include an output 20 dB coupler to interface to the existing antenna drive control system.

SOW-HR-A06: Each LNA assembly shall include a Noise Diode of suitable Excess Noise Ratio, connectable to whichever LNA is offline.

SOW-HR-A07: Each LNA plate assembly shall provide connectivity to the non-operational path for test signal injection or a ranging loopback signal calibration to be provided by the Government.

Table A.2-1 A.3 Triplexer Requirements

SOW-HR-A08: The Contractor shall meet or exceed the following triplexer specifications.

TRIPLEXER PORT DEFINITIONS

All filter performance measurements shall cover the frequency range of at least 1600 to 2400 MHz

Table A.3-1

A.4 16.4m Antenna Feed Assembly Mounting Specifications

SOW-HR-A09: The Contractor shall meet or exceed the 16.4m antenna feed assembly mounting specifications detailed in Table A.4-1 in Appendix A.

The new Feed Assembly shall be integrated into the antenna basic support structure Mounting of feed assembly shall be rigid and stable. It shall include enough adjustment range to position the Feed for optimal sub-reflector and dish illumination.

Table A.4-1

A.5 Antenna Environmental Requirements

SOW-HR-A10: The Contractor shall meet or exceed the 16.4m antenna feed mounting assembly environmental specifications at Wallops Island, Virginia detailed in Table A.5-1.

Table A.5-1

A.6 Antenna Installation Requirements

SOW-HR-A11: The Contractor shall meet or exceed the 16.4m antenna installation specifications at Wallops Island, Virginia detailed in Table A.6-1 in Appendix A.

design and fabricate a new housing to accept the new feed.

dry air from the antenna air dryer at the necessary pressure to keep all feed cavities moisture free. A manual purge and an automatic pressure relief valve shall be provided at the horn and any other locations needed to ensure a purge will remove any moisture that may enter the waveguide and filter cavities.

The Contractor shall provide any equipment and instructions needed to ensure any purge will provide adequate flow to remove moisture in a stated time period.

Table A.6-1

A.7 Antenna Feed Acceptance Test Requirements

SOW-HR-A12: The Contractor shall meet or exceed the 16.4m antenna feed site acceptance test requirements as detailed in Table A.7-1 in Appendix A.

Factory Acceptance Tests (FAT)

(SOW-HR-QA10)

Feed primary patterns, insertion loss, return loss, group delay and gain variation, and other tests to verify compliance with the SAT specifications conducted at the Contractor’s facility. The Contractor shall provide measured or predicted radiation patterns for all three operating bands from 0 to 180 degrees from boresight and state the method used and accuracy.

Site Acceptance Test (SAT)

(SOW-HR-QA10)

The SAT shall be performed following the installation of the new feed in the HR1 and HR2 antenna at the Wallops Island Facility. Testing shall include G/T, azimuth and elevation antenna patterns for transmit and receive, as well as Beam-width and transmit to receive isolation at maximum uplink power at low, mid and high end of the transmit band while monitoring the S and L receive bands.

Contractor shall apply 60dBm transmitted power at the transmit ports for each polarization and demonstrate that no degradation occurs over one hour for each received polarization.

Table A.7-1

A.8 System Gain-to-Noise Temperature (G/T)

SOW-HR-A13: The Contractor shall meet or exceed G/T system requirements detailed in Table A.8-1 in Appendix A. The Contractor shall demonstrate the required G/T by measurements at the output of the LNAs or at the Receive Intermediate Frequency Distribution Switch (RIFDS). Offerors shall include in their proposal an analysis of how the required G/T will be achieved, plus a description of, and the accuracy provided by the proposed method of measurement.

Table A.8-1

A.9 Waveguide Requirements

SOW-HR-A14: The Contractor shall ensure all waveguide interfaces are of welded construction (not epoxied) and shall use WR430 flanges.

SOW-HR-A15: The Contractor shall supply and install radio frequency interference (RFI) gaskets for all waveguide flanges. Full gaskets shall be used whenever possible. 100% spare gaskets shall be provided by the Contractor.

SOW-HR-A16: The Contractor shall ensure all equipment that handles RF energy and contains air or gas cavities shall be pressurized with dry air. S- and L-band equipment shall be maintained at a pressure of approximately 3.5 kPa (0.5 psi) above atmospheric but shall be able to withstand with stand 4.1 kPa (0.6 psi) without damage.

A.10 Antenna Radiation Pattern

SOW-HR-A17: The Contractor shall use the radiation pattern in ITU recommendation P.465 as a reference. This recommendation states the radiation patterns shall produce side lobes with a gain (G) less than or equal to the following:

G = 32 - 25 log M dBi for 1˚ # M < 48˚ = - 10 dBi for 48˚ # M # 180˚ Where M = the angle between the antenna main beam center and the direction considered.

The Contractor is not required to meet this pattern but shall compare it to the radiation pattern of the product being offered. It is desired that antennas come as close as possible to the International Telecommunication Union (ITU) recommended pattern. As part of the reflector’s surface alignment, the Contractor shall provide the theoretical antenna pattern and measured radiation pattern for the COTS product offered in the technical proposal.

SOW-HR-A18: The antenna spillover sidelobes for the sub-reflector and main reflector shall be less than 5.0 dBi in all bands.

APPENDIX B: ACRONYMS

ms Millisecond