一种提高GNSS接收机干扰抑制能力的方法

摘要

针对 GNSS 接收机依靠外部卫星射频信号进行导航，易受到有意或无意的射频干扰影响的问题，对卫星接收机特别是弹载卫星接收机的抗干扰性能及其抗干扰技术进行研究。分别从信噪比和跟踪门限2个方面对卫星接收机的抗干扰性能进行详尽分析，通过对有无干扰信号时对接收机接收信号的信噪比的对比，以及对不同跟踪门限下接收机抗干扰能力的分析，提出了采用 INS辅助跟踪环路技术来提高接收机抗干扰能力的方法。结果表明：该方法在不改变接收机硬件结构、不增加成本的条件下，可有效提高弹载接收机的抗干扰能力。%GNSS receivers rely on outer satellite radio-frequency signals, so they are vulnerable to intentional or unintentional signal interference. Research anti-jamming ability and technology of satellite receiver, among others the ammunition-loading satellite receiver. Analyze anti-jamming ability of satellite receiver from signal to noise ratio and tracking threshold. Through comparing analysis of receiver signal to noise ratio when there is anti-jamming signal or there is no anti-jamming signal, and receiver anti-jamming ability analysis under different tracking threshold. The results show that the method can effectively improve receiver anti-jamming ability without changing receiver hardware structure and increasing cost.