GNSS干扰定位技术分析

Analysis of GNSS interference localization techniques

GNSS受到射频干扰时,很容易出现性能急剧下降乃至无法工作的问题,降低系统脆弱性仍然是现实需求和重要发展方向.近年来,干扰源定位作为直接排除式的抗干扰方法,在手段和性能上都得到了快速发展,受到日益关注且应用广泛.本文通过深入分析干扰定位技术的原理特点,将压制式干扰源的定位技术分类为传播参数测量、方位角测向、直接定位三大类,并对比总结了各方法优缺点和应用场景.

When GNSS is subjected to radio frequency interference(RFI),the performance of GNSS is very easy to decline sharply or even fail to work.Reducing the system vulnerability is still a realistic demand and an important direction of development.In recent years,interference localization,as a direct elimination method of anti-interference,has been rapidly developed in means and performance,and has been increasingly paid attention to and widely used.For suppression interference sources,the principles and characteristics of interference localization techniques are summarized and analyzed in depth in this paper.The techniques are classified into three categories:propagation parameter measurement,azimuth direction finding and direct positioning.The advantages and disadvantages of these methods and their application scenarios are compared and summarized.