机动式多基地地波超视距雷达中载波跟踪技术研究

Study of Carrier Wave Tracking Technology in Mobile Multistatic Ground Wave OTHR

机动式多基地地波超视距雷达是一种新型的雷达体制,发射站和接收站均采用高稳定度的恒温晶振作为频率源,但由于器件本身的工艺原因,收发站的两个频率源间可能存在微量的频率误差,这就使得接收站无法准确得到发射信息。本文对该频率误差作了分析、提取,并采用闭环修正法加以修正,使收发站的频率源保持一致,从而实现了该雷达的载波跟踪。

Mobile multistatic ground wave OTHR is a new radar system. Small irequency error may exist in irequency sources between receiver and transmitter,because of the craft of devices when oven controlled crystal- oscillators of high stability are used in both transmitter and receiver. Thus the receiver can＇t accurately obtain the information from transmitter. In this paper, the frequency error is analyzed, extracted and amended by the method of closed - loop amending, lastly the frequency sources between receiver and transmitter are consistent,and carrier wave tracking in the radar system is realized.