gyroscopyГироскопия и навигацияGiroskopiya i Navigatsiya0869-70352075-0927AO «Концерн «ЦНИИ «Электроприбор»10.17285/0869-7035.2018.26.3.040-053gyroscopy-284Research ArticleСтатьиМатематический анализ фазовых погрешностей в схеме слежения приемника GPS при помехах разного родаMathematical Analysis for the GPS Carrier Tracking Loop Phase Jitter in Presence of Different Types of Interference SignalsШахинЭ. M.ShaheenE.M.

Шахин Эхаб М. Доцент, доктор наук, кафедра средств радиоэлектронной борьбы, Военно-технический колледж (Каир, Египет).

Department of Electronic Warfare, Military Technical College, Cairo

Военно-технический колледж (Каир).Egypt2018211120252634053Copyright © Шахин Э.M., 20252025Шахин Э.M.Shaheen E.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.gyroscopy.ru/jour/article/view/284

Качество работы приемника глобальной системы позиционирования GPS обычно зависит от функционирования следящего контура, поэтому его можно считать «сердцем» приемника. Было доказано, что схема фазовой автоподстройки частоты (ФАПЧ) более чувствительна к шуму и помехам, чем схема слежения за задержкой (ССЗ). По этой причине ФАПЧ можно использовать как средство исследования рабочих характеристик приемника GPS в присутствии помех. В статье выводится аналитическое решение для расчета погрешности ФАПЧ в присутствии различного рода помех, таких как непрерывные синусоидальные, узкополосные, с частичным перекрытием по полосе, широкополосные, сосредоточенные по спектру и импульсные. Кроме того, аналитически получено пороговое значение отношения несущей к шуму. Полученные аналитические выражения были проверены путем моделирования.

The performance of a Global Positioning System (GPS) receiver usually depends on the racking 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.

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The authors declare that there are no conflicts of interest present.