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Interference effects on GPS L2C signal acquisition and tracking.

机译：GPS L2C信号采集和跟踪的干扰影响。

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GPS L2C signals are now being transmitted from the new-generation IIR-M satellites. L2C signals are easily affected by RF and are often distorted by RF interference. Therefore, the performance of L2C signal acquisition and tracking is influenced by RF interference. The interferences of additive white Gaussian noise and unwanted L2C signals are always accompanied with incoming desired L2C signals. In this thesis, the effects of cross-correlation and additive white Gaussian noise (AWGN) on the performances of the L2C signal acquisition and tracking are analyzed in four parts: L2C signal detection, maximum error probability of information data estimation, signal-to-noise ratio, and PLL tracking errors.; In L2C signal detection, a large cross-correlation value is used to estimate the detection probabilities. Cross-correlation will affect L2C signal detection performance. The cross-correlations increase the error probability of information data estimation. The average signal-to-noise ratio is derived under the effects of cross-correlation and AWGN. The SNR is reduced when there is more cross-correlation or when the unwanted signal power from another satellite is higher than the desired signal power. In the PLL error analysis, the PLL error is estimated by using the linear method under the cross-correlation and AWGN. Simulations are also done for the analyses of the cross-correlation and AWGN effects on L2C signal acquisition and tracking.
机译：现在从新一代IIR-M卫星发送GPS L2C信号。 L2C信号容易受到RF的影响，并且经常会由于RF干扰而失真。因此，L2C信号采集和跟踪的性能会受到RF干扰的影响。加性高斯白噪声和不需要的L2C信号的干扰始终伴随着传入的所需L2C信号。本文分析了互相关和加性高斯白噪声（AWGN）对L2C信号采集和跟踪性能的影响，主要分为四个部分：L2C信号检测，信息数据估计的最大错误概率，信噪比。噪声比和PLL跟踪误差。在L2C信号检测中，较大的互相关值用于估计检测概率。互相关会影响L2C信号检测性能。互相关增加了信息数据估计的错误概率。平均信噪比是在互相关和AWGN的影响下得出的。当存在更多互相关或来自另一颗卫星的有害信号功率高于所需信号功率时，SNR会降低。在PLL误差分析中，通过使用互相关和AWGN下的线性方法来估计PLL误差。还进行了仿真，以分析互相关和AWGN对L2C信号采集和跟踪的影响。

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