多雷达数据处理中坐标转换的新方法

在多雷达数据处理过程中,必须考虑减弱坐标转换带来的误差对数据处理的影响。针对此,提出了在多雷达数据处理中使用地心坐标系作为统一坐标系的一种新的坐标转换方法。该方法以地心坐标系作为统一坐标系,观测数据由本地直角坐标转换成地心直角坐标,再由地心直角坐标转换为情报处理中心的直角坐标。可以看出该方法进行的坐标转换都是大地坐标之间的转换,因此是简单和精确的。通过转换误差分析和验证,结果表明了该方法可以减小地球曲面误差等的影响。

A New Method of Coordinate Transformation Under Multi-Radar Data Processing System

In multi- radar data processing,the effects on data processing by minishing the error caused by Coordinate Transformation must be considered. A new method using ECEF coordinate as uni- coordinate for transforming coordinates is presented in this paper, and observation data are transformed from local rectangular coordinates to Earth- Centered rectangular coordinates, and then from Earth- Centered rectangular coordinates to that of the intelligence processing center. This type of transformation method is done be- tween the Earth coordinates, so it is simple and accurate, The analysis of transformation error and the result of simulation have shown the method may reduce the error effects of the earth curvature.