| GPS软件接收机跟踪通道信号统计分析 |
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| 引用本文： | 李作虎,史俊文,刘雪瑞,贾赞杰.GPS软件接收机跟踪通道信号统计分析[J].测绘学院学报,2010(2). |
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| 作者姓名： | 李作虎 史俊文 刘雪瑞 贾赞杰 |
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| 作者单位： | 信息工程大学测绘学院;61081部队;61365部队;63883部队; |
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| 基金项目： | 卫星导航与定位教育部重点实验室(B类)开放基金资助 |
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| 摘 要： | 传统的基于硬件的接收机由于芯片的封装性很难用来进行通道信号的分析研究,而基于软件无线电技术的软件接收机则很容易做到。软件接收机的跟踪通道信号统计分析可用于接收机算法的测试与比对以及卫星信号性能的分析与评估。这里搭建了GPS软件接收机L1中频数字信号处理平台,对跟踪通道输出的I、Q支路信号进行了均值、标准方差以及均方根(RMS)统计。分析了各统计值与通道对应卫星的高度角、信号强度以及噪声之间的关系。基于统计结果提出了一种估计信道信噪比的方法。最后比较了不同信号采样频率对相关三角形和导航定位解算精度的影响。
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| 关 键 词： | 全球定位系统 软件接收机 跟踪 均方根 信噪比 统计 |
A Statistical Study on GPS Software Receiver Tracking Channel Signal |
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| LI Zuo-hu,SHI Jun-wen,LIU Xue-rui,JIA Zan-jie.A Statistical Study on GPS Software Receiver Tracking Channel Signal[J].Journal of Institute of Surveying and Mapping,2010(2). |
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| Authors: | LI Zuo-hu SHI Jun-wen LIU Xue-rui JIA Zan-jie |
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| Institution: | 1.Institute of Surveying and Mapping;Information Engineering University;Zhengzhou 450052;China;2.61081 Troops;Beijing 100094;3.61365 Troops;Tianjin 300140;4.63883 Troops;Luoyang 471000;China |
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| Abstract: | Traditional receivers based on the hardware can not be used in analysis of channel signals easily because of their built-in characteristics,but software receivers based on SDR(Software Defined Radio) can do this easily.The statistical analysis of tracking channel signal with software receivers can be used in the test and compare of receiver algorithms as well as analysis and evaluation of performance of satellite signal.A GPS software receiver prototype used to process L1 intermediate frequency digital sign... |
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| Keywords: | GPS software receiver tracking RMS signal-to-noise ratio statistic |
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