CINRAD雷达产品“缺角”现象分析及处理

Analysis and Processing of Elevation Data Gaps in CINRAD Radar Products

基于CINRAD/SA雷达图像产品出现"缺角"的现象,分析信号流程并通过BDAVC5软件观察天线运动轨迹,发现激磁电压过低导致旋转变压器有时辨识不出来正弦波信号,引起方位跳码,使得天线在未完成本仰角扫描的情况下就提前跳转到下一仰角进行扫描,从而造成了仰角剩余方位角度上的数据缺测。详细阐述了激磁电压过低而导致数据缺测的原因,指出此类故障多数发生在伺服系统,提出利用BDAVC5软件分析天线运行轨迹在伺服故障定位方面能起到很好的辅助作用。

The data gaps in CINRAI）/SA radar image products are one of typical faults. Through the detail analysis of signal flow and movement locus of antenna with BDAVC5, it is found that the rotary transformer works abnormally because of low excitation voltage, which makes the radar directly skip to the next elevation scan without completing the current elevation scan. Such faults always occur along with the problems of the transmitter system or servo system, and induce the absence of radar data. Based on the findings, a serial of suggestions for different faults are proposed, and the software of BI）AVC5 is useful for the fault location in servo system.