| 改进的GPS弱信号差分捕获方法研究 |
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| 引用本文： | 裘勋,卢艳娥,庞春雷.改进的GPS弱信号差分捕获方法研究[J].现代防御技术,2011,39(6):126-130. |
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| 作者姓名： | 裘勋 卢艳娥 庞春雷 |
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| 作者单位： | 空军工程大学电讯工程学院,陕西西安,710077 |
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| 基金项目： | 国家自然科学基金(61071014);学院科研创新基金(DYCX1002) |
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| 摘 要： | 捕获是GPS接收机信号处理中的关键部分,在微弱信号情况下,传统的弱信号捕获方法不能很好地捕获到卫星信号,采用一种改进的GPS弱信号差分捕获方法来进行捕获研究.并对一组GPS的数据信息,分别采用以上2种方法对其进行捕获仿真.结果显示,新方法可以捕获到较微弱的GPS信号,提高了接收机的灵敏度.
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| 关 键 词： | GPS软件接收机 相干积分 差分相干 |
An Improved Differential Acquisition Algorithm for GPS Weak Signals |
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| QIU Xun
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LU Yan-e
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PANG Chun-lei.An Improved Differential Acquisition Algorithm for GPS Weak Signals[J].Modern Defence Technology,2011,39(6):126-130. |
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| Authors: | QIU Xun LU Yan-e PANG Chun-lei |
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| Institution: | (AFEU,Telecommunication Engineering Institute,Shaanxi Xi’an 710077,China) |
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| Abstract: | Signal acquisition is the key phase of GPS signal processing.Sometimes,GPS signals are too weak to be received or processed by traditional methods for weak signals.An improved differential acquisition method for weak signals is presented here.A data set collected is used to verify the algorithm, and the result shows that the improved method can capture the GPS weak signal successfully and improve the sensitivity of receivers. |
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| Keywords: | GPS software receivers coherent integration difference coherent |
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