| GPS扩频接收机中窄相关技术抗多径性能研究 |
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| 引用本文： | 张子武,丁晓明.GPS扩频接收机中窄相关技术抗多径性能研究[J].航天电子对抗,2008,24(1):57-60. |
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| 作者姓名： | 张子武 丁晓明 |
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| 作者单位： | 北京交通大学信息科学研究所,北京,100044 |
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| 摘 要： | 在GPS差分扩频接收机的导航伪距测量中,多径误差是主要误差源.通过分析多径干扰对伪距测量的影响,提出用窄相关技术来减小多径误差,并分析了窄相关技术对信道带宽及码环带宽的要求.最后通过仿真验证了窄相关技术抗多径干扰性能及其实现条件,同时验证了多径误差与相关间隔的关系以及窄相关技术对载波跟踪误差的改善能力.
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| 关 键 词： | 窄相关技术 DLL 多径干扰 相关间隔 |
| 修稿时间： | 2007年8月14日 |
Anti-multipath performance of narrow correlator technology in GPS spread-spectrum receiver |
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| Zhang Ziwu,Ding Xiaoming.Anti-multipath performance of narrow correlator technology in GPS spread-spectrum receiver[J].Aerospace Electronic Warfare,2008,24(1):57-60. |
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| Authors: | Zhang Ziwu Ding Xiaoming |
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| Institution: | Zhang Ziwu,Ding Xiaoming(Information Science Research Institute of Beijing Jiaotong University,Beijing 100044,China) |
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| Abstract: | During the measurement of navigation pseudorange in the GPS difference spread-spectrum receiver,the multipath errors are the dominant error sources.Using the narrow correlator technology to eliminate the multipath error is put forward through analyzing the multipath's effect on the measurement of pseudorange.The requirements of the technology in the channel band and DLL band are also analyzed.Finally,the simulation validates the anti-multipath interference performance of the technology and the conditions.Me... |
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| Keywords: | narrow correlator technology DLL multipath interference correlator spacing |
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