| 基于GPS软件接收机的C/A码捕获算法 |
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| 引用本文： | 全鹏,朱桂斌,叶久志,魏光伟.基于GPS软件接收机的C/A码捕获算法[J].微型机与应用,2011,30(6):66-69. |
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| 作者姓名： | 全鹏 朱桂斌 叶久志 魏光伟 |
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| 作者单位： | 1. 重庆通信学院,重庆,400035
2. 解放军91683部队,浙江,温州,325012 |
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| 基金项目： | 重庆市科技攻关计划项目 |
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| 摘 要： | 为了尽量减少导航电文数据比特跳变带来的影响,在基于FFT的并行码相位搜索算法的基础上,采用两相邻毫秒数据进行捕获,再利用DFT细化频率估计,得到C/A码相位和较精确的载波频率。利用实际采集的数据进行实验,结果证实了该方法能快速有效地对C/A码进行捕获,为后续跟踪环路提供了良好的初始条件。
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| 关 键 词： | GPS软件接收机 C/A码捕获 导航数据跳变 精频估计 |
Acquisition algorithm of C/A code based on GPS software receiver |
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| Quan Peng,Zhu Guibin,Ye Jiuzhi,Wei Guangwei.Acquisition algorithm of C/A code based on GPS software receiver[J].Microcomputer & its Applications,2011,30(6):66-69. |
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| Authors: | Quan Peng Zhu Guibin Ye Jiuzhi Wei Guangwei |
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| Affiliation: | Quan Peng1,Zhu Guibin1,Ye Jiuzhi1,Wei Guangwei2(1.Chongqing Communication Institute,Chongqing 400035,China,2.Unit 91683 of PLA,Wenzhou 325012,China) |
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| Abstract: | This paper presented an acquisition method,using the two adjacent millisecond data to acquire the initial phase of the C/A code and the carrier Doppler frequency,then the frequency resolution is improved by using DFT.The experimental results show that the proposed method can acquire the GPS signal correctly and quickly,in addition,a good initial condition is provided to the tracking loop. |
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| Keywords: | GPS software receiver C/A code acquisition navigation data bit transition fine frequency estimation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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