Determination of TRANET (Tracking Station Coordinates for Tracking Network) and SMTP (Special Mission Tracking Program) Tracking Station Coordinates for Use in the WGS (World Geodetic System) 84

摘要

In collaboration with the Defense Mapping Agency (DMA), an effort to prepare Doppler tracking station coordinates for precise NNSS orbit computation in the World Geodetic System 1984 (WGS 84) has been concluded. The level of random and systematic errors in the new coordinates is believed to be significantly lower than in any previous coordinate set, including those used for production orbit computation at DMAHTC. Additionally, the accuracy of Doppler determination of the earth's instantaneous spin axis in the orbit computation has been similarly improved.