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For 25-kHz Time Division Multiple Access (TDMA)/DAMA service, supporting the transmission of voice at 2,400, 4,800, or 16,000 bps and data at rates of 75 to 16,000 bps: MIL-STD-188-183A, Interoperability Standard for 25-kHz TDMA/DAMA Terminal Waveform, 20 March 1998, with Notice of Change 1, 9 September 1998.
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For data controllers operating over single-access 5-kHz and 25-kHz UHF SATCOM channels: MIL-STD-188-184, Interoperability and Performance Standard for the Data Control Waveform, 20 August 1993, with Notice of Change 1, 9 September 1998. This standard describes a robust link protocol that can transfer error-free data efficiently and effectively over channels that have high error rates.
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For MILSATCOM equipment that control access to DAMA UHF 5-kHz and 25-kHz MILSATCOM channels: MIL-STD-188-185, DoD Interface Standard, Interoperability of UHF MILSATCOM DAMA Control System, 29 May 1996, with Notice of Change 1, 1 December 1997; and Notice of Change 2, 9 September 1998.
Military Wide Bandwidth, Unprotected
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The standard waveform is described in MIL-STD-188-165A, with revision B currently in staffing. It supports data rates from 64 kbps to 155 Mbps. This specification is compliant with the requirements for use of commercial WB systems.
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The Earth Terminal specification is MIL-STD-188-164, which describes ground, air, and surface terminal parameters.
APPENDIX E – INTEROPERABILITY STANDARDS
Page E-7
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The Defense Satellite Communications System (DSCS) consists of multiple X-Band transponder satellites that provide world wide coverage between 65 N and 65 S.
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The Wideband Gapfiller System (WGS) is the replacement system for DSCS and is expected to field the first three satellites beginning in 2005 and ending in 2007. Satellites 4 and 5 are tentatively scheduled for 2010 and 2011. This system will continue the X-Band capability of DSCS and add a Military Ka-Band capability. Note that Military and Civilian Ka-Bands are different.
Military Narrow and Wide Bandwidth, Protected
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The standard waveforms are described in MIL-STD-1582D and MIL-STD-188-136A.
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The waveforms are currently restricted to Extremely High Frequency (EHF), however are evolving to allow application to Military X and Ka-Bands at a future date.
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The current EHF system, Milstar, is in its third generation. This system provide Low Data Rate (LDR) services, from 75 bps to 2.4 kbps. Medium Data Rate (MDR) services operate from 4.8 kbps to 1.544 Mbps.
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The Advanced EHF (AEHF) system will extend the life of Milstar and add High Data Rate (HDR) services.
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Transformational Satellite (T-SAT) will ultimately merge the capabilities of the WGS and the EHF series of systems. It will use a protected waveform and support both EHF and Military Ka-Band spectrum.
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