| GPS接收机多径抑制算法研究 |
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| 引用本文： | 刘拥军,胡捍英,王大鸣.GPS接收机多径抑制算法研究[J].电子对抗,2009(3):27-30,46. |
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| 作者姓名： | 刘拥军 胡捍英 王大鸣 |
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| 作者单位： | 解放军信息工程大学通信工程系; |
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| 基金项目： | 国防预先研究项目(40901010201) |
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| 摘 要： | 研究了窄相关、多径估计延迟锁相环算法(MEDLL)和基于斜率估计(ELS)的GPS接收机多径抑制算法,重点研究了ELS算法,该算法可以在一定的预相关带宽的前提下,通过对相关峰两边的斜率进行估计,达到抑制多径造成的跟踪误差的效果。仿真结果表明,ELS的算法在性能上比窄相关技术更好,接近于MEDLL算法。该算法相对于窄相关技术资源规模增加不大,比MEDLL算法资源规模和计算量都要小很多,易于在硬件上实时实现。
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| 关 键 词： | GPS 多径 MEDLL 窄相关 ELS |
Study on Multipath Suppression Algorithm of GPS Receiver |
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| Liu Yongjun Hu Hanying Wang Daming.Study on Multipath Suppression Algorithm of GPS Receiver[J].Electronic Warfare,2009(3):27-30,46. |
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| Authors: | Liu Yongjun Hu Hanying Wang Daming |
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| Institution: | Dept.of Communication Eng.;PLA Information Engineering Univ.;Zhengzhou 450002;China |
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| Abstract: | The narrow correlator spacing algorithm,Multipath Estimations Delay Lock Loop(MEDLL) and Early Late Slope(ELS) suppress multipath algorithms of GPS receiver are studied in this paper,and the ELS algorithm is studied as an important point,this algorithm can effectively suppress code tracking error caused by multipath through estimating slope of both sides of correlation function peak in the addition of adequacy pre-correlation bandwidth.The simulation results show that the performance of the slope estimation... |
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| Keywords: | GPS multipath MEDLL narrow correlator spacing algorithm ELS |
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