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A Novel Multipath Mitigation Technique for GNSS Signals in Urban Scenarios
IEEE Transactions on Vehicular Technology ( IF 6.8 ) Pub Date : 2020-03-01 , DOI: 10.1109/tvt.2019.2962919
Anil Kumar , Arun Kumar Singh

In typical urban or suburban environments, multipath poses a serious threat to the accuracy of position determined by a global navigation satellite system (GNSS) receiver. In this paper, a novel multipath mitigation technique is proposed for general multipath scenarios encountered in the urban settings. In the proposed technique, a double differentiated correlation function based histogram output is used to estimate the code delay. It is shown that the proposed technique provides significant improvements over the current state of the art techniques like high resolution correlator/double delta correlator and narrow correlator. The results hold for general multipath models for the mobile-satellite channels. The performance guarantees include closed form expressions for the probability of correct delay estimate and simulation results for the average range error variation with respect to carrier to noise ratio (CNR), signal bandwidth and different channel settings.

中文翻译:

城市场景中 GNSS 信号的新型多径缓解技术

在典型的城市或郊区环境中,多径对全球导航卫星系统 (GNSS) 接收器确定的位置精度构成严重威胁。在本文中,针对城市环境中遇到的一般多径场景提出了一种新颖的多径缓解技术。在所提出的技术中,使用基于直方图输出的双微分相关函数来估计代码延迟。结果表明,所提出的技术提供了对现有技术(如高分辨率相关器/双增量相关器和窄相关器)的当前状态的显着改进。结果适用于卫星移动信道的一般多径模型。
更新日期:2020-03-01
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