【摘 要】
：
高功率欺骗干扰是欺骗攻击的主要样式之一.这类欺骗虽然容易被检测,但由于其功率过高,会严重影响用户对正常信号的接收处理,因此必须予以消除.虽然阵列抗干扰技术是解决该问
【机 构】
：
清华大学电子工程系,北京,中国,100084
论文部分内容阅读
高功率欺骗干扰是欺骗攻击的主要样式之一.这类欺骗虽然容易被检测,但由于其功率过高,会严重影响用户对正常信号的接收处理,因此必须予以消除.虽然阵列抗干扰技术是解决该问题的有效途径之一,但由于大量GNSS普通用户采用的是单天线,因此难以应用.针对该问题,本文分析对比了现有的三种基于基带信号处理方式的单天线欺骗信号消除方法,然后择优选择了其中的连续欺骗消除(Successive Spoofing Cancelation,SSC)算法在FPGA平台上进行了开发实现,并利用GPS C/A码信号进行了实际性能测试评估.试验结果表明,SSC算法可以获得约25dB额外性能改善,比较适合用于普通用户防御高功率欺骗干扰.研究成果,对后续开发具有欺骗防御能力的GNSS接收设备具有参考价值.
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