| 基于差分相干后积累的伪码信号检测方法优化与分析 |
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| 引用本文： | 刘文祥,彭竞,王飞雪.基于差分相干后积累的伪码信号检测方法优化与分析[J].宇航学报,2011,32(7). |
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| 作者姓名： | 刘文祥 彭竞 王飞雪 |
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| 作者单位： | 国防科学技术大学电子科学与工程学院卫星导航研发中心,长沙,410073 |
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| 摘 要： | 差分相干后积累是近年来提出的一种伪码信号检测新方法,其虚警概率存在精确解析式,但较难推导其检测概率的理论公式.文献多是通过不同理论近似方法获得其检测概率,但理论近似存在较大误差,不适用于对参数的优化.本文采用理论模型与数值仿真结合的方法分析差分相干后积累的检测性能,并基于检测损耗最小化准则研究了中频积累时间的优化.此外,还比较了差分相干检测方法与传统非相干检测方法的最优性能,结果表明前者优于后者.
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| 关 键 词： | 伪码信号检测 差分相干 检测损耗 最优中频积累时间 |
Optimization and Analysis of Differential Coherent Post Detection Integration Method for PN Code Signal Detecting |
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| LIU Wen-xiang,PENG Jing,WANG Fei-xue.Optimization and Analysis of Differential Coherent Post Detection Integration Method for PN Code Signal Detecting[J].Journal of Astronautics,2011,32(7). |
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| Authors: | LIU Wen-xiang PENG Jing WANG Fei-xue |
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| Institution: | LIU Wen-xiang,PENG Jing,WANG Fei-xue(Satellite Navigation Research and Development Center,National University of Defense Technology,Changsha 410073,China) |
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| Abstract: | The differential coherent post detection integration is a new method for pseudo-random noise(PN) code signal detecting proposed in recent years,and the theoretical model of the false alarm probability for this method is available,but the detection probability is hard to derive.Different theoretical approximations are used to get the detection probability in many references,but those results cannot be adopted to optimize the parameters since the approximation error is large.In this paper both theoretical mod... |
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| Keywords: | PN code signal detecting Differential coherent Detecting loss Optimal coherent integration time |
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