摘要
为开展GNSS欺骗干扰源定位研究,构建了多路GNSS欺骗干扰互相关噪声模型。分析了欺骗干扰原理并给出了信号模型;通过对噪声构成和规律的分析,研究建立了PRN码间互相关噪声模型;利用信噪比和欺骗信号方位角分布进行描述。仿真结果显示,多路GNSS欺骗干扰中码间互相关噪声,在接收通道噪声中的比重随欺骗信号功率增加趋于100%。这表明测向精度与多路GNSS欺骗信号功率是一组矛盾,实际测向结果可通过欺骗信号信噪比寻优。
In order to carry out research of locating the source of GNSS spoofing interference,this paper built a model of multiple GNSS spoofing interference noise.Firstly,this paper analyzed the theory of spoofing and gave the mathematic models of signals.Then,it built a model of cross correlation interference of PRNs based on the analysis to composing and regular of the noise.Finally,this paper applied SNR and distribution of azimuth to depict the noise model.The simulation results indicate that the weight of the cross correlation noise of multiple GNSS spoofing in the noise of receiver tends to 100%.It reveals that the direction precision contradicts multiple GNSS spoofing power,and the result of direction finding can be optimized by SNR of the spoofing.
作者
陈建华
陈树新
吴昊
何仁珂
Chen Jianhua;Chen Shuxin;Wu Hao;He Renke(College of Information & Navigation,Air Force Engineering University,Xi’an 710077,China)
出处
《计算机应用研究》
CSCD
北大核心
2019年第8期2488-2491,共4页
Application Research of Computers
基金
国家自然科学基金资助项目(61673392,61703420)
关键词
卫星导航欺骗干扰
互相关噪声
信噪比
方位角分布
GNSS spoofing interference
cross correlation noise
SNR
distributionof azimuth
