一种基于功率可行域的卫星导航欺骗干扰评估方法

Evaluation Method of Satellite Navigation Spoofing Based on Power Feasible Region

针对欺骗干扰评估场景复杂、反欺骗策略繁多等所导致的量化评估难度大的问题,建立了欺骗对抗场景到欺骗对抗效果的评估模型和映射过程,并从欺骗对抗场景中的功率空间和欺骗对抗效果中的欺骗有效概率出发,设计了基于欺骗有效功率可行域的评估方法与指标。仿真结果表明,该评估方法可以实现不同反欺骗策略之间性能的量化对比,能够为接收机反欺骗算法选择和优化提供量化评估方法。

Objectives:In view of the difficulty of quantitative evaluation caused by complex spoofing sce-narios and numerous anti-spoofing strategies,it is necessary to form effective indicators and methods for the evaluation of spoofing countermeasures.Methods:The evaluation model and mapping process from spoofing scenes to spoofing countermeasure effect are established.Based on the power space in the spoofing scenes and the spoofing effective probability in the spoofing countermeasure effect,the evaluation method and index based on the power feasible region are designed.Results:Through simulation,the quantitative evaluation results based on power feasible region of two spoofing countermeasure strategies are given,and the simulation results show that the evaluation method can realize the quantitative comparison of the perfor-mance of different anti-spoofing strategies.Conclusions:The indicator of the power feasible region can pro-vide a quantitative evaluation method forselection and optimization of the anti-spoofing algorithms in receivers.