| 引用本文: | 王伟,张文明.GPS多天线多径抑制技术.[J].国防科技大学学报,2006,28(5):90-93.[点击复制] |
| WANG Wei,ZHANG Wenming.GPS Multipath Rejection through Multi-antenna[J].Journal of National University of Defense Technology,2006,28(5):90-93[点击复制] |
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| GPS多天线多径抑制技术 |
| 王伟, 张文明 |
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(国防科技大学 电子科学与工程学院，湖南 长沙 410073)
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| 摘要: |
| 针对小范围多天线系统中多径对各相关通道之间信噪比测量值影响的相关性，采用基于“当前统计”模型的扩展卡尔曼滤波技术得到多径信号各参数，从而消去多径信号影响。分析了多径对信噪比的影响，建立了扩展卡尔曼滤波的状态方程和观测方程。仿真表明，该方法能够有效地降低由多径引起的伪距测量误差和相位测量误差。 |
| 关键词: 全球定位系统 扩展卡尔曼滤波 多径 信噪比 |
| DOI： |
| 投稿日期：2006-03-31 |
| 基金项目:国家部委基金资助项目(51404030204KG0106) |
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| GPS Multipath Rejection through Multi-antenna |
| WANG Wei, ZHANG Wenming |
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(College of Electronic Science and Engineering, National Univ. of Defense Technology，Changsha 410073，China)
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| Abstract: |
| As the signal-to-noise ratio measurement of each correlation channel fixed in a small area is correlated for multipath signal, the paper proposed a method to reject multi-path by filtering the parameter of multi-path through EKF based on current statistical model. The effect of multi-path to SNR was an alyzed. State formula and measure formula WERE built. The proposed method is proved to be effective in reducing range measurement error and phase measurement error through simulation. |
| Keywords: GPS EKF multipath SNR |
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