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C/A Code Tracking and Acquisition with Interference Rejection using the Extended Kalman Filter

机译:使用扩展卡尔曼滤波器的带干扰抑制的C / A代码跟踪和捕获

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摘要

This paper considers the problem of acquiring and tracking the GPS C/A code using the extended Kalman filter (EKF) in the presence of narrowband jamming. The EKF is a modification of a previously developed code tracking algorithm that jointly estimates signal amplitude, code delay, and interferer autoregressive parameters. Acquisition is performed by incrementing the code delay estimate until the threshold of a t-test is exceeded. Representative simulation results are included for stationary and swept tone jammers.
机译:本文考虑了在窄带干扰情况下使用扩展卡尔曼滤波器(EKF)获取和跟踪GPS C / A码的问题。 EKF是对先前开发的代码跟踪算法的修改,该算法可共同估算信号幅度,代码延迟和干扰源自回归参数。通过增加代码延迟估计直到超过t检验的阈值来执行采集。包括静态和扫频干扰器的代表性仿真结果。

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