| GPS接收机数字基带信号处理算法研究 |
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| 引用本文： | 薛雅娟. GPS接收机数字基带信号处理算法研究[J]. 计算机仿真, 2009, 26(3) |
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| 作者姓名： | 薛雅娟 |
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| 作者单位： | 成都信息工程学院通信工程系,四川,成都,610225 |
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| 基金项目： | 成都信息工程学院科研基金 |
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| 摘 要： | 为了优化GPS接收机数字信号基带处理过程,提高伪距测量精度和GPS定位精度,需要从解扩解调的角度,建立相应同步环路的数学模型,分析GPS接收机基带数字信号处理算法.采用循环相关法作为信号捕获方法,采用Costas环作为信号跟踪方法,在MATLAB环境下实现了相应的算法设计、验证与仿真.验证结果表明这种算法能够为软件CPS接收机提供快速捕获及跟踪能力,是一种适用而高效的软件CPS接收机处理算法,对于开发GPS接收机产品以及开展相关领域的研究工作都具有重要的意义.
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| 关 键 词： | 全球定位系统 软件接收机 基带 捕获及跟踪算法 数字延迟锁相环 |
A Processing Arithmetic of Digital Baseband Signals in GPS Receiver |
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| XUE Ya-juan. A Processing Arithmetic of Digital Baseband Signals in GPS Receiver[J]. Computer Simulation, 2009, 26(3) |
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| Authors: | XUE Ya-juan |
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| Affiliation: | Department of Communication Engineering;Chengdu University of Information Technology;Chengdu Sichuan 610225;China |
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| Abstract: | For improving the process of the digital signal disposal arithmetic of the baseband of GPS receiver and improving the precision of the measurement of pseudorange and positioning of GPS,a digital signal disposal arithmetic of the baseband of GPS receiver was analyzed by setting up the mathematic model of the corresponding synchronization part.The circular correlation algorithm was presented and employed as the signal acquisition algorithm,and the Costas loop as the signal tracking algorithm.The design and va... |
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