一种机扫超视距侦测系统测向模型及其解算方法

Direction-finding model and algorithm for a mechanical scanning OTH detection system

针对机械扫描方式工作的超视距侦测系统,由于受到收发双发天线方向图和天线扫描的调制,存在测向模糊的问题,建立一种机械扫描超视距侦测系统测向模型,利用窗口截获理论分析其截获和测向特性,给出模型的解算方法,并提出一种变扫描周期进行解模糊的测向策略,最后通过仿真验证了方法的有效性。

For the OTH detection system working in the mechanical scanning mode,the modulation of the transmit-receive dual-transmitter antenna pattern and antenna scanning results in direction-finding ambiguity.A direction-finding model is built for the mechanical scanning OTH detection system,its intercept and direction-finding characteristics are analyzed through the window intercept theory,the model algorithm is given,and a direction-finding strategy of using variable scanning periods is proposed for ambiguity resolution.Finally,the method is verified to be effective via the simulation.