| 基于干扰抵消的GPS伪卫星抗远近效应方法研究 |
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| 引用本文： | 汪婕,廉保旺,张志鹏. 基于干扰抵消的GPS伪卫星抗远近效应方法研究[J]. 测控技术, 2008, 27(3): 43-45,48 |
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| 作者姓名： | 汪婕 廉保旺 张志鹏 |
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| 作者单位： | 西北工业大学 电子信息学院,陕西 西安,710072;西北工业大学 电子信息学院,陕西 西安,710072;西北工业大学 电子信息学院,陕西 西安,710072 |
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| 摘 要： | 针对GPS伪卫星导航系统中出现的"远近效应"问题,提出了一种新的应用于GPS接收机端的解决方法。利用发生"远近效应"时不同通道间相关峰值的差值判断出强干扰信号,重构强干扰并将其从接收信号中抵消。建立了系统模型,给出了该方法的实现原理框图,并详细分析了该方法的性能。仿真和信噪比分析都表明,该方法有较好的抗"远近效应"能力,适合GPS伪卫星导航系统应用。
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| 关 键 词： | 伪卫星 远近效应 干扰抵消 信噪比 |
| 文章编号： | 1000-8829（2008）03-0043-03 |
| 收稿时间： | 2007-09-04 |
| 修稿时间： | 2007-09-04 |
Research on Near Far Resistant Method Based on Interference Cancellation to GPS Pseudolite |
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| WANG Jie,LIAN Bao-wang,ZHANG Zhi-peng. Research on Near Far Resistant Method Based on Interference Cancellation to GPS Pseudolite[J]. Measurement & Control Technology, 2008, 27(3): 43-45,48 |
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| Authors: | WANG Jie LIAN Bao-wang ZHANG Zhi-peng |
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| Abstract: | To decrease the interference arising from near far problem in GPS pseudolite navigation system,a new method applied at receiver is proposed.By detecting the interference through the difference of correlation peak value in different channels,the interference can be regenerated and counteracted from the receiving signal.System model and a scheme to implement the method are presented.Analysis of the system performance is also given.The result of simulations and theoretical analysis of SNR demonstrate that this method has a great capability to resist the near far problem and can be widely used in GPS pseudolite navigation system. |
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| Keywords: | pseudolite near far problem interference cancellation SNR |
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