被动雷达导引头非相干两点源角度测量

Angular Measurement of Passive-Radar-Seeker for Non-Coherent Dual Sources

在非相干两点源存在的情况下,对被动雷达导引头的干涉仪测角进行了研究.在一定条件下,由比相均值得到的测角结果将会指向大功率源,提出了一种基于双采样点的角度测量方法,该方法利用干涉仪两通道在两个采样点的信号就能得到两点源的角度.通过仿真对该方法的有效性进行验证.结果表明,该方法可以对非相干两点源进行分辨,并且在一定相位条件下能够得到比传统比相方法更高的测角精度.

The angular measurement of interferometer in passive-radar-seeker under the presence of non-coherent dual sources was investigated. It was indicated that, under certain condition, the phase-comparison mean value of measured angle would point the ＂stronger＇ source. This paper proposes a method for the angular measurement based on two sample points. The angles of the dual sources could be obtained from signals of two sample points through two channels of interferometer. Simulation was implemented to verify the validity of this method. Results demonstrate that non-coherent dual sources could be resolved and, compared with conventional phase-comparison method, higher precision of angular measurement be achieved under certain phase conditions.