机载雷达组网中多载机信息融合坐标转换的研究

在机载雷达组网中,各平台载机要实时地向融合载机传送目标信息,进行信息融合,必须将各飞机平台的坐标系转换为融合载机的地理坐标系.传统的坐标转换方法是假设两载机之间距离较近而直接进行坐标平移,但当载机间距离较远时,这种方法由于引入了地球形状及载机间的高度差而会造成较大的系统偏差.本文讨论了当载机间距离较远时的坐标转换问题,在考虑地球曲率影响的情况下,给出了借助GPS定位载机坐标并通过WGS-84坐标系进行转换的方法,以减小误差,满足系统要求.

Coordinate transformation problems of information fusion in airborne radar network

In contemporary networked airborne radar systems,in order to transfer data between planes for data fusion,coordinate conversion from platform plane to home plane is necessary.Ordinary coordinate transformation which based on close distance removes coordinate directly and does not consider errors of height and shape of the earth.An algorithm to convert coordinate through WGS-84 coordinate system in the situation of long distance is discussed in the article.The method of coordinate transformation given is satisfied with the system in precision.