| 基于均衡复现的载波多径抑制技术 |
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| 引用本文： | 刘强,张旭东.基于均衡复现的载波多径抑制技术[J].测绘科学,2012,37(2):110-111. |
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| 作者姓名： | 刘强 张旭东 |
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| 作者单位： | 电子科技大学电子科学技术研究院,成都,611731 |
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| 基金项目： | 航空科学基金(20090580013) |
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| 摘 要： | 本文基于扩频信号分析了不同多径参数对载波幅度和相位的影响,在低信噪比条件下,使用自适应均衡技术,实时估计多径参数和抑制载波多径。使用实时估计得到的多径参数,重构多径信号,从接受信号中消去多径信号。仿真结果表明,这2种算法均能很好地降低多径对载波的影响,可以有效提高载波相位的测量精度。
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| 关 键 词： | 扩频 自适应均衡 多径 复现 |
Equalization and reconstruction-based carrier multipath suppression |
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| LIU Qiang
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ZHANG Xu-dong.Equalization and reconstruction-based carrier multipath suppression[J].Science of Surveying and Mapping,2012,37(2):110-111. |
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| Authors: | LIU Qiang ZHANG Xu-dong |
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| Institution: | (Research Institution of Electronic Science and Technology,University of Electronic Science and Technology of China,Chengdu 611731,China) |
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| Abstract: | Through analysis of the impact of different multipath parameters on the amplitude and phase of the carrier,the paper used adaptive channel equalization to estimate multipath parameters and inhibit carrier multipath in the condition of low SNR.According to obtained multipath parameters,it reconstructed multi-path signals,eliminated the multipath signals from received signal.Simulation showed that these two algorithms could reduce the impact of multipath on the carrier effectively,and improve the accuracy of carrier phase. |
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| Keywords: | spread spectrum adaptive equalization multipath reconstruction |
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