An improved strategy for determining earth satellite orbits by radio

摘要: Abstract : For satellite orbit determination, the most accurate observable available today is microwave phase, differenced between observing stations and satellites to cancel both transmitter receiver related errors. maximum accuracy, integer cycle ambiguities of such observations must be resolved. To perform this ambiguity resolution, a bootstrapping strategy effective. The tracking have wide ranging progression spacings. Then, by conventional 'integrated Doppler' processing from widely spaced stations, orbits can determined well enough permit resolution closely stations. these reduce uncertainty determination enable for more which will orbital further, still so on. In test with total six formal actual errors determining NAVSTAR Global Positioning System were reduced factor two.