| 利用信噪比削弱GPS多路径效应的研究 |
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| 引用本文： | 张波,黄劲松,苏林. 利用信噪比削弱GPS多路径效应的研究[J]. 测绘科学, 2003, 28(3): 32-35 |
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| 作者姓名： | 张波 黄劲松 苏林 |
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| 作者单位： | 1. 中国科学院遥感应用研究所,北京,100101
2. 武汉大学,武汉,430079 |
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| 摘 要： | 由于多路径误差的非时空相关性,使其成为双差模型中较难解除的误差源。本文利用观测值的信噪比对观测值质量进行评价,通过降低受多路径效应影响的观测值的权重,从而达到削减多路径误差的目的。最后通过实验数据解算结果的重复性验证了此方法的有效性和可靠性。
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| 关 键 词： | GPS 多路径效应 信噪比 权重 |
| 文章编号： | 1009-2307(2003)03-0032-04 |
| 修稿时间： | 2003-01-20 |
A research on using SNR values to mitigate carrier phase multipath in GPS surveying |
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| ZHANG Bo,HUANG Jin song,SU Lin. A research on using SNR values to mitigate carrier phase multipath in GPS surveying[J]. Science of Surveying and Mapping, 2003, 28(3): 32-35 |
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| Authors: | ZHANG Bo HUANG Jin song SU Lin |
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| Affiliation: | ZHANG Bo1,HUANG Jin song2,SU Lin1 |
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| Abstract: | Because multipath is not spatially correlated, it cannot be canceled with differencing techniques. The bias like multipath remains the dominant error source for differential measurements. According to the fact that the quality of each carrier phase measurement is contained in the signal to noise ration (SNR), a weighting scheme using SNR values with GPS carrier phase observable in the presence of multipath is developed in this paper. This technique for multipath mitigation is verified feasible and reliable by the repeated solutions of experimental data. |
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| Keywords: | GPS multipath SNR weighting |
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