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GPS L5 에서 신호획득 수행시간동안 변경된 코드위상 재검색 및 정밀도플러 결정 기법
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- Issue Date
- 2009-09
- Citation
- 한국 자동 제어 학술 회의 (KACC) 2009, pp.1088-1093
- Publisher
- 제어·로봇·시스템학회
- Language
- Korean
- Type
- Conference Paper
- Abstract
- According to the GPS modernization, L5 is the third civilian GPS signal, broadcast in a radio band reserved exclusively for aviation safety services. By the way, as the code length of GPS L5 is ten times longer than that of GPS L1, the acquisition processing time in GPS L5 takes longer than that of L1. This phenomenon makes the code phase acquired initially change and causes the tracking loop to unlock. In order to overcome this problem, This paper proposes L5 acquisition schemes for the rapid code phase re-search and the fine doppler determination. And the feasibility of the proposed scheme is demonstrated through the simulation results.
- KSP Keywords
- Aviation Safety, Code length, GPS signal, Tracking loop, code phase, processing time, simulation results