Simulation and Validation of Spread Spectrum Technique in In- Orbit Testing of the Satellite Transponder
نویسندگان
چکیده
-In order to evaluate the integrity of a satellite transponder, it is necessary to measure its characteristics (i.e. frequency response) and the characteristics of its high power amplifier (HPA), such as sensitivity and saturated output power. Since these properties are subject to aging and the satellite itself suffers from the vibration shocks during launch hence performance of these components have to be monitored to guarantee that they still meet the initial specifications. Satellite in-orbit testing is a very necessary task in order to be able to predict possible malfunctioning of the transponders. Keywords-Conventional Systems, Spread Spectrum Signal, Concepts, Principle, Pseudo noise modulation, Methodology, Results & Discussions, Conclusion, References.
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