车载搜索雷达波束稳定及坐标系转换

Vehicular Search Radar Beam Stabilization and Coordinate System Conversion

搜索波束稳定技术及相关坐标系转换是装备了车载搜索雷达的自行防空武器系统的关键技术之一。搜索波束稳定是指车载搜索雷达在车体倾斜状态下工作时,搜索波束俯仰起始位置与大地水平面的夹角保持不变。否则会出现遗漏搜索空域的现象。进行坐标系转换是由于搜索雷达直接测量的目标信息是搜索雷达坐标系下的,而输出到操控终端和显示终端的目标信息是大地坐标系下的,所以要进行搜索雷达坐标系到大地坐标系间的转换。

The search beam stabilization technique and the concerned coordinate system conversion are key techniques of self--propelled antiaircraft weapon system equipped with the vehicular search radar. The search beam stabilization refers to keeping the angle between elevation initial position of the search beam and geoidal horizon invariable while the vehicular search radar operates in the vehicle tilt state. Otherwise, phenomenon of missing search airspace will occur. Since the target information measured with the search radar is in the search radar coordinate system, and the targets information delivered to operation and control and display terminals is in the geodesic coordinate system. Therefore, it is necessary to carry out conversion between the search radar coordinate system and the geoidal coordinate system.