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	Strategy of signal search and acquisition in space borne GPS receiver
	Yang Chunbao ; You Zheng ; Zhang Yong
	2010-05-10 ; 2010-05-10
关键词	Practical/ artificial satellites Global Positioning System radio receivers signal detection/ signal search signal acquisition space borne GPS receiver Global Position System C/A code navigation receiver low Earth orbit frequency search method code phase signal detector Doppler bin code search speed orbital inclination orbital altitude GPS antenna elevation orbital eccentricity GPS satellite satellite allocation method Doppler range 500 Hz/ B6330 Radionavigation and direction finding B6250G Satellite communication systems B7610 General aspects of aircraft, space vehicles and satellites B6140M Signal detection/ frequency 5.0E+02 Hz
中文摘要	Unaided cold start time is an important performance of spaceborne Global Position System (GPS) receiver. Reduction of cold start time was developed for C/A code navigation receiver on low Earth orbit (LEO). The search method of frequency and code phase, signal detector and parameters select, Doppler bin, and code search speed were analyzed. Doppler bin of 500 Hz and code search speed of 475 chips/s were obtained. The orbital inclination, orbital altitude, elevation of GPS antenna and orbital eccentricity were researched as the influential factors to Doppler range. GPS satellite allocation according to statistical information of angle between GPS satellites was discussed. Analysis and simulation shows that the cold start time is reduced by 25%~30% through this GPS satellite allocation method, the influential factors of Doppler range are orbital inclination, orbital altitude, elevation of GPS antenna and orbital eccentricity in regular order with an effect, the cold start time is reduced by 25%~40% farther considering these influential factors of Doppler range.
语种	中文 ; 中文
出版者	Beijing Univ. of Aeronaut. & Astronaut ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/25321]
专题	清华大学
推荐引用方式 GB/T 7714	Yang Chunbao,You Zheng,Zhang Yong. Strategy of signal search and acquisition in space borne GPS receiver[J],2010, 2010.
APA	Yang Chunbao,You Zheng,&Zhang Yong.(2010).Strategy of signal search and acquisition in space borne GPS receiver..
MLA	Yang Chunbao,et al."Strategy of signal search and acquisition in space borne GPS receiver".(2010).

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