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首页> 外文期刊>AEU: Archiv fur Elektronik und Ubertragungstechnik: Electronic and Communication >Multipath error mitigation based on wavelet transform in L1 GPS receivers for kinematic applications
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Multipath error mitigation based on wavelet transform in L1 GPS receivers for kinematic applications

机译：L1 GPS接收器中基于小波变换的多径误差缓解技术

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摘要

GPS positioning issue has been experienced a surge of interest for multipath mitigation in the past few years. Multipath disturbance is a challenging error in high precision GPS positioning particularly in kinematic mode where the moving receiver undergoes different multipath circumstances. Diverse hardware and software approaches have been implemented to reduce this error in both static and kinematic modes. We have proposed an algorithm to alleviate C/A code multipath in kinematic mode. Our proposed scheme falls into software group where wavelet transform (WT) has been used as the main basis. Of course, we have used stationary wavelet transform (SWT) as the key idea of our proposed method that makes it possible to investigate all frequency sub-bands. Consequently, it would be possible to extract multipath disturbance since it is considered to be a low frequency term. After applying SWT to double difference (DD) residuals, the multipath error is extracted and used to correct DD observations. In this paper, we have designed three experiments to study our proposed method efficiency under different conditions in comparison with existing algorithms.
机译：在过去的几年中，GPS定位问题引起了人们对减少多路径的兴趣。在高精度GPS定位中，特别是在运动模式下，移动接收器经历不同的多径情况时，多径干扰是具有挑战性的误差。已经实现了多种硬件和软件方法来减少静态和运动模式下的此错误。我们提出了一种在运动学模式下减轻C / A代码多径的算法。我们提出的方案属于以小波变换（WT）为主要基础的软件组。当然，我们已经使用平稳小波变换（SWT）作为我们提出的方法的关键思想，这使得研究所有频率子带成为可能。因此，由于被认为是低频项，因此有可能提取多径干扰。将SWT应用于双差（DD）残差后，提取多径误差并将其用于校正DD观测值。在本文中，我们设计了三个实验，以与现有算法相比研究在不同条件下提出的方法效率。

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