Channel modelling in complex urban environments for testing multipath mitigation methods enhanced by antenna array

M. Ait-Ighil, S. Rougerie, J. Lemorton, G. Carrie, G. Artaud, C. Bourga, M. Bousquet
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引用次数: 5

Abstract

Multipaths are one of the major sources of errors for satellite navigation systems. The goal of this article is to present some advances on propagation channel modelling for GNSS mobile users and to show how GNSS receiving algorithms are sensitive to the modelling of the channel. Two channel characteristics are analysed in the paper: the resolution of the environment level of detail, and the resolution of the channel, meaning the number of significant echoes in the tapped-delay line. Particular focus is made on mitigation techniques using antenna arrays to reject multipath. The influence of the channel model will be then interpreted considering three different types of GNSS receiver algorithms, namely conventional DLL/PLL, beam forming and SAGE/STAP algorithm.
用于测试天线阵列增强的多径缓解方法的复杂城市环境信道建模
多路径是卫星导航系统误差的主要来源之一。本文的目的是介绍GNSS移动用户在传播信道建模方面的一些进展,并展示GNSS接收算法如何对信道建模敏感。本文分析了两个信道特性:环境细节水平的分辨率和信道分辨率,即分接延迟线中显著回波的数量。特别侧重于使用天线阵列来拒绝多径的缓解技术。然后将考虑三种不同类型的GNSS接收机算法,即传统的DLL/PLL,波束形成和SAGE/STAP算法,来解释信道模型的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Space Communications
Space Communications 工程技术-电信学
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