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Mathematical Analysis for the GPS Carrier Tracking Loop Phase Jitter in Presence of Different Types of Interference Signals

机译:在不同类型干扰信号存在下GPS载波跟踪环抖动的数学分析

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摘要

The performance of a Global Positioning System (GPS) receiver usually depends on the tracking loops, so they can be considered the heart of the GPS receivers. It has been proven that the carrier tracking loop is more sensitive to noise and interference than the code tracking loop. Therefore, the carrier tracking loop can be used as a means for investigating the GPS receiver performance in presence of interference. In this paper, closed form analytical expressions for the carrier tracking loop phase error are derived in presence of different types of interference signals such as continuous wave interference, narrowband interference, partial band interference, broadband interference, match spectrum interference, and pulse interference. Also the carrier-to-noise ratio threshold is analytically derived. The derived analytical expressions have been validated with the aid of simulation experiments.
机译:全球定位系统(GPS)接收器的性能通常取决于跟踪环路,因此它们可以被认为是GPS接收器的核心。已经证明,载波跟踪环路对噪声和干扰更敏感,而不是代码跟踪循环。因此,载波跟踪环可以用作在存在干扰时研究GPS接收器性能的装置。在本文中,在不同类型的干扰信号(例如连续波干干扰,窄带干扰,部分频带干扰,宽带干扰,匹配频谱干扰和脉冲干扰)的存在下导出用于载波跟踪环误差的闭合形式的分析表达式。此外,分析载波噪声比阈值。借助仿真实验验证了衍生的分析表达。

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