HU Chao1,2, PANG Feng1,2, LI Sheng-ming1, MA Li-hua1

(1. National Astronomical Observatories, Beijing 100012, China;

2. University of Chinese Academy of Sciences, Beijing 100049, China)

 

Abstract: Aiming at the fast finding technic issue in portable very small aperture terminal(PVSAT) application, the GEOsatellite finding principle of the AEP type antenna pedestal was studied based on the GEO communication satellites system platform, and the mathematical essence of GEO satellite finding was analyzed also. The digital strapdown platform based on low cost MEMS accelerometer and magnetometer was built, which can replace the traditional leveling mechanism,and the novel algorithm of AEP type antenna pedestal was derived. The results indicate that the novel method promote the speed of GEO satellite finding by simplifying the operation procedures, and reduce the GEO satellite finding time to 2 minutes in PVSAT applications. At the same time, the weight of the PVSAT is reduced by removing of leveling mechanism, and the portability of PVSAT is effectively improved.

Key words: portable very small aperture terminal(PVSAT); GEO satellite fast finding technic; digital strapdown platform