摘要
针对实地部署雷达遮蔽分析过程中要使用多个数字高程模型(DEM)数据文件且需要转换为方位距离单元格式的问题,提出了一种DEM数据处理方法.首先根据雷达部署地和责任区半径选取生成专用的DEM数据文件;然后使用坐标变换结合等效地球半径修正将DEM数据转换为方位距离单元格式,并对其进行了近距地物修正和数据精简.仿真结果表明,相比较于传统方法,该方法解决了DEM数据选取的问题,转换格式后的高程数据用于遮蔽分析可以得到更加准确的结果,并且大大降低的数据量也提升了雷达遮蔽分析的效率.
To solve the problem of using multiple digital elevation model(DEM)data files and also converting them into azimuth and distance unit format in the process of analyzing the field deployed radar masking,this paper puts forward a DEM data processing method.Firstly,the paper accords to the location of radar deployment and the radius of responsibility area to select and generate special DEM data files,and then converts the DEM data into azimuth and distance unit format by using coordinate transformation combined with equivalent earth radius correction,for which to carry out the close range ground object correction and reduction of the data volume.Simulation results show that,compared with traditional methods,the proposed method solves the problem of DEM data selection,and the DEM data after format conversion can be used for radar masking analysis to get more accurate results,and the greatly reduced data volume improves the efficiency of radar masking analysis.
作者
陈超凡
江晶
李佳炜
CHEN Chaofan;JIANG Jing;LI Jiawei(Air Force Early Warning Academy,Wuhan 430019,China)
出处
《空军预警学院学报》
2020年第1期21-26,共6页
Journal of Air Force Early Warning Academy
