摘要： 为了消除由于伪卫星测试环境下造成的远近效应，该文提出了一种基于SIC算法原理的伽利略测试接收机通道结构设计，利用伪卫星通道的跟踪结果生成强干扰信号用以抵消GPS和Galileo通道的输入信号的强干扰信号成分，并且伪卫星通道对较强的伪卫星信号使用1/8个周期的伪随机码做相关运算的方法，以牺牲9dB信噪比的代价使信号捕获时间大大缩短。Matlab仿真结果表明能很好地消除远近效应，并能加快伪卫星信号的捕获。

关键词: 伽利略测试接收机, 伪卫星, 远近效应, 独立通道

Abstract: With aim to cancel near-far effect caused by pseudolite of Galileo test environment, a base-band channel architecture plan is proposed based on subspace projection SIC method. By using results of track loop of pseudolite channel, people can generate strong pseudolite signal to cancel the strong interference out of input signal before flowing into the satellite channel. And 1/8 period of a PN code length is used for code correlation due to shorten acquisition time even it can cause 9 dB’s SNR degradation. Simulation results using Matlab software indicate that near-far effect can be efficiently cancelled and also acquisition time can be saved.

Key words: Galileo test receiver, Pseudolite, Near-far effect, Independent channel