DMA (Defense Mapping Agency) orbit determination of the Navy Navigation Satellite System 1986

Details DMA (Defense Mapping Agency) orbit determination of the Navy Navigation Satellite System 1986 DMA (Defense Mapping Agency) orbit determination of the Navy Navigation Satellite System 1986

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987dma..rept.....m&link_type=abstract

Final Annual Report no. 2, Jan. - Dec. 1986 Defense Mapping Agency Hydrographic and Topographic Center, Washington, DC.

Statistics

Computation

Ephemerides, Military Spacecraft, Navigation Satellites, Navy, Orbit Calculation, Polar Orbits, Satellite Tracking, Data Acquisition, Doppler Effect, Telecommunication, Tracking Stations, Variations, Weather

Scientific paper

The Defense Mapping Agency Hydrographic/Topographic Center (DMAHTC) performs precise orbit computations for Navy Navigation Satellite (NNSS) satellites (also called TRANSIT), using Doppler observations collected by a worldwide network of stations. Equipment at these sites is configured around either a Tranet II or a Magnavox 1502 DS receiver. The current stations are listed and tracking network configuration shown. Recorded Doppler counts, surface weather measurements, and other appropriate data are transmitted daily via satellite communications or over telecommunication links to DMATHC for processing, time corrections and orbit determination. There are two classes of NNSS satellites -- the Oscar and the Nova. The Nova satellites represent the latest generation of TRANSIT satellites. For Nova satellite 30480 and Oscar satellites 30110, 30130, 30200 and 30300, data were processed in two-day fits. For Nova satellite 30500, data were processed in two-day fits.

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