摘要
说明了数字地形高度数据、数字地形分析数据、矢量地图和数字地理信息数据交互标准的起源、发展过程及趋势 ,叙述了其数据组成结构、误差范围标准等基本要素。在确定的数字地形高度数据和地貌特征数据条件下 ,使用地图网络划分并计算反射功率 ,以反射强度调制像素点的亮度 ,从而实现大面积地 (海 )回波雷达图像计算机模拟。详细说明雷达图像仿真过程中地形数据坐标变换、地形几何效应判断和数据文件加工等处理步骤 ,进行了仿真试验 ,给出了几个图例。
The origination, development and trend of digital terrain elevation data, digital feature analysis data, vector map and digital geographic Information exchange standards are described in this paper. Data structure, error range and other factors of the databases are presented briefly. Under the certain terrain, partition the gaming area into many clutter patches, calculate the reflect power of each patch, calculate the brightness of every pixel of the picture, then the simulated radar image is obtained. Method and process of conversion of the database, transformation of the coordinate system, processing of the terrain geometrical effect etc are discussed in details. Applications in the design of the radar train simulator show the great value of digital terrain database.
出处
《计算机仿真》
CSCD
2005年第2期4-8,共5页
Computer Simulation
基金
国防"十五"预研基金项目 (4 13 0 40 2 0 2D10 16)
关键词
地形
数据库
雷达
仿真
图像
Terrain
Database
Radar
Simulation
Image
