摘要
地形遮挡是雷达探测难以克服的困难,其对雷达波束的阻挡会产生探测盲区,严重影响雷达的使用。对于一个雷达站点,搞清雷达盲区的具体分布十分必要,但现实中却很难找到定量计算雷达盲区的实用方法。文中提出了一种快速计算方法,具体方法是通过地理信息系统(Geographiic Information System, GIS)软件快速定位遮挡山体,并获取遮挡山体与雷达的地表投影距离,进而快速精确求解盲区高度,以及修正大气折射对盲区高度造成的影响。通过视距公式对新方法的准确性进行了验证,结果表明,新方法可以实现雷达地形遮挡盲区的快速和准确计算。
Terrain shielding is an insurmountable difficulty in radar detection. Its blocking of radar beam will produce detection blind area, which will seriously affect the use of radar. For a radar station, it is necessary to find out the specific distribution of the blind area of radar detection, but in reality, it is difficult to find a practical method to quantitatively calculate the blind area. A fast computation method is presented in this paper. Firstly, the sheltered mountain is quickly located through GIS software, and the surface projection distance between the sheltered mountain and radar is obtained. Then the height of the blind area is quickly and accurately solved, and the influence of atmospheric refraction on the height of the blind area is corrected. Finally, the accuracy of the new method is verified by the sight distance formula. The results show that the new method can realize the fast and accurate computation of the blind area for the radar with terrain shielding.
作者
李冠运
刘松涛
LI Guan-yun;LIU Song-tao(Unit 92001 of PLA,Qingdao 266000,China;Dalian Naval Academy,Dalian 116018,China)
出处
《中国电子科学研究院学报》
北大核心
2022年第7期646-650,共5页
Journal of China Academy of Electronics and Information Technology
关键词
雷达地形遮挡盲区
GIS
无线电波
大气折射
blind area for radar with terrain shielding
geographic information system
radio waves
atmospheric refraction
