一种四信道比幅测向校正方法

Correction of channel 4 amplitude-comparision bearing discriminator

四信道比幅测向是一种在雷达告警系统中广泛采用的测向方法,通过测向天线对4个不同到达方向电磁波的幅度比较来测量辐射源方向。针对传统比幅测向校正算法的局限,介绍了比幅测向系统的模型及原理,通过公式推导对影响测向精度的因素进行了分析,并结合典型的雷达告警系统组成框图,提出了一种新的四信道比幅测向校正方法。通过实际测试表明,该方法提高了系统测向精度并使得系统的可生产性、可维护性有了提高。

Four channel amplitude comparison direction finding is widely applied in the Radar warning system.By comparing amplitudes of electromagnetic waves which receive by direction finding antennas in four different directions,it gets identifications of radar emitters.According to the limitations of the traditional direction finding correction algorithms,this paper provides a new four channel direction finding correction algorithm by describing the models and principles of the amplitude comparison direction finding system,analyzing the characteristics which influence the accuracy of the direction finding,introducing the composing graphics of the radar warning systems.The experimental results show that this algorithm optimizes the accuracy and improves the manufacturing and maintainability of the direction finding system.