无线电工程

塔康导航系统属于近程无线电导航系统,主要为作用范围内的飞行器提供距离信息和方位信息。其中方位信息主要依赖于基准群的定时信息,对定时点做干扰能够破坏方位导航信息。通过分析基准群固有的脉冲间隔,结合具体的工作模式,生成虚假的基准群干扰塔康接收机的定时点。以基于最小均方误差的方位滤波算法为例,仿真单个和多个基准群对算法的影响,证明采用连续基准群干扰能够取得较好的效果。

Tactical Air Navigation System belongs to short range radio navigation system.It provides distance and bearing information for aircrafts in its effective range.Bearing information relies heavily on timing of base pulse group.Bearing information would be destroyed by jamming of timing point.According to the analysis of fixed pulse interval of base group and working mode,illusive base pulse group is generated and emitted to jam timing information of receiver.Then TACAN receiver is jammed by it.Taking bearing filter algorithm based on LMS for example,interfering performance of one and more groups is simulated by computer.It concludes that continuous?base pulse group is the best jamming mode.