| 4.5.4-13-1 Ensure the needed frequencies have been allocated or will be allocated |
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The responsible POC for Communications Payload maintains awareness and status of frequency planning and allocation efforts performed by Systems Engineering. These efforts may include preparation of DD 1494 application forms from conceptual stage to operational stage that align with the defense acquisition management framework. The DD 1494 contains DoD and NTIA general information, as well as transmitter, receiver, and antenna equipment characteristics for the payload. These efforts may also include the submittal of a frequency assignment request using an approved DD 1494 that results in an authorization to operate. A key reference document that provide guidance on the preparation of the DD 1494 application is the SMC Guide.
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NA
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NA
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SMC-G-005 "SMC Systems Engineering and Spectrum Management", 12 December 2012 or equivalent
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| 4.5.4-13-2 Ensure Power flux/Power spectral flux density are requirements met |
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The responsible POC for Communications Payload monitors design, development and testing of the payload to ensure that NTIA and ITU regulatory requirements as allocated to the payload are met. These requirements include occupied bandwidth, power flux density, spurious emissions, out-of-band emissions, and radio astronomy protection. Additional requirements identify antenna sidelobe levels, antenna pointing accuracy, frequency tolerances, transmitter power inhibit commanding, and external interference allocation budget. Furthermore, requirements are included that ensure safety of personnel and hardware are met. Finally, the responsible POC ensures that sub-allocation and flow down of payload requirements to unit level (SSPA, TWTA, antenna, filters) are appropriate and verified. The key reference for the NTIA regulatory requirements is the "Manual of Regulations and Procedures for Federal Radio Frequency Management" (NTIA Manual). An example of the ITU recommendation for radio astronomy protection is ITU-R RA.769-2 "Protection Criteria Used in Radio Astronomical Measurements". Other ITU recommendations that might apply to a program in conjunction with the NTIA Manual should be identified using program specifications and requirements documents.
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NA
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"Manual of Regulations and Procedures for Federal Radio Frequency Management" (NTIA Manual), September 2015 Revision of the May 2013 Edition ITU-R RA.769-2 "Protection Criteria Used in Radio Astronomical Measurements"
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| 4.5.4-13-3 Ensure interference studies are complete |
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The responsible POC for Communications Payload contributes to the successful development and completion of a Spectrum Supportability Risk Assessment (SSRA) to ensure the payload can achieve compatible operation with all authorized space and terrestrial systems that share the same spectrum in the same service area of operation. The SSRA contains the following components: regulatory, technical, electromagnetic environment effects, and operational. The payload technical characteristics must be accurately stated for possible inclusion in ITU filings for international registration so that frequency coordination can be conducted. The responsible POC also contributes to C/I interference analysis which is used in ITU frequency coordination. Interference analysis includes both self-interference between all payload paths and channels (uplink, downlink and crosslink) and external interference that may affect other programs, projects and stations.
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NA
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NA
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NA
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