Orbit Determination Using Spread Spectrum Ranging | ||
| The International Conference on Electrical Engineering | ||
| Article 107, Volume 7, 7th International Conference on Electrical Engineering ICEENG 2010, May 2010, Pages 1-14 PDF (227.43 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/iceeng.2010.33278 | ||
| Authors | ||
| M. I. Youssef; M. Zahara; A. E. Emam; M. Abd ElGhany | ||
| Al-Azhar University – Cairo – EGYPT. | ||
| Abstract | ||
| 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. A Matlab programs are developed to perform orbit determination process and to measure the bit energy to noise ratio required for the communication. The developed programs take into account the dynamic model of the satellite orbit including various orbital perturbations and simulate the path delay for ranging measurements including clock offsets, thermal, ionosphere and troposphere noise. Acceptable results were foreseen in comparison to the flight proven software tool. | ||
| Keywords | ||
| Spread Spectrum; orbit determination; dual ranging | ||
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