| GPS信号快速捕获方案研究 |
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| 引用本文： | 李继忠,李巍.GPS信号快速捕获方案研究[J].航空电子技术,2006,37(2):1-5. |
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| 作者姓名： | 李继忠 李巍 |
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| 作者单位： | 中国航天二院遥感设备研究所,北京,100854 |
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| 摘 要： | 设计在高动态环境下工作的GPS接收机,其难点之一在于对卫星伪码的快速捕获。针对缩短GPS接收机捕获伪随机码时间的问题,本文在对GPS信号结构作出分析的前提下,介绍了时域滑动相关的常规捕获方法;提出了基于FFT的快速捕获技术,并在matlab环境下做了系统仿真,仿真结果显示捕获速度可以得到显著提高。
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| 关 键 词： | GPS信号 C/A码 时域滑动相关 FFT |
| 文章编号： | 1006-141X(2006)02-0001-05 |
| 修稿时间： | 2005年9月27日 |
Research on Fast Acquisition of GPS Signal |
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| LI Ji-zong,LI Wei.Research on Fast Acquisition of GPS Signal[J].Avionics Technology,2006,37(2):1-5. |
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| Authors: | LI Ji-zong LI Wei |
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| Abstract: | One of the difficulties of designing GPS receiver working under high dynamic circumstance is to fast acquire the satellite PN code. In this paper, the method of Sliding Window Correlation is analyzed. In order to shorten the PN code acquitting time, the scheme based on FFT is also provided. The method provided is efficiently used in the emulator system with matlab. The emulation results show the capturing speed can be significantly improved. |
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| Keywords: | GPS signal C/A code sliding window delay and correlation FFT |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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