Orbit Determination Using Spread Spectrum Ranging

Abstract

In this paper, analysis on precise geostationary satellite orbit determination using spread spectrum ranging measurements is performed. Adding to the communication system a residue number system block to enhance its performance. The results are compared to that provided from orbit determination using both dual RF-tone ranging from two separate earth station locations and classical orbit determination using both angular measurement and RF-tone measurements from an earth station. A model for the spread spectrum ranging system is developed to be used in the orbit determination process. Chaotic code generator is used instead of conventional PN code generators in the spread spectrum ranging system. The performance of the system is evaluated using both the chaotic and conventional code generators.