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首页> 外文期刊>Aerospace and Electronic Systems, IEEE Transactions on >Short Multipath Insensitive Code Loop Discriminator
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Short Multipath Insensitive Code Loop Discriminator

机译：短多径不敏感代码循环鉴别器

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摘要

It is well known that one of the most significant errors in GPS pseudo-range measurement is the multipath error. Many researchers have been involved in this major issue, and promising results have been achieved in mitigating multipath errors. Most of these studies, however, do not really improve the tracking error in presence of short multipath. A novel code loop discriminator, which is insensitive to multipath signals having a relative delay lower than one half the correlator spacing is addressed here. The benefit of this discriminator, called short-multipath insensitive code loop discriminator (SMICLD), has been evaluated theoretically and implemented using MatLab/Simulink. The proposed method requires neither hardware nor software complexity. The novel loop tracking error, as well as the narrow correlator (NC) tracking error, were determined and compared. Simulation results showed that the proposed code discriminator outperforms the narrow correlator discriminator in terms of simplicity and performance.
机译：众所周知，GPS伪距测量中最重要的误差之一就是多径误差。许多研究人员都参与了这个重大问题，并且在减轻多径误差方面已经取得了可喜的成果。但是，这些研究大多数都没有真正改善短多径情况下的跟踪误差。在此提出一种新颖的代码循环鉴别器，其对具有小于相关器间隔的一半的相对延迟的多径信号不敏感。从理论上评估并使用MatLab / Simulink实现了这种称为短多径不敏感代码循环鉴别器（SMICLD）的鉴别器的优势。所提出的方法既不需要硬件也不需要软件复杂性。确定并比较了新颖的环路跟踪误差以及窄相关器（NC）跟踪误差。仿真结果表明，所提出的代码鉴别器在简单性和性能方面均优于窄相关器鉴别器。

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