基于VxWorks的行进间搜索雷达天线波束补偿控制研究

Research on antenna beam compensation control of marching search radar based on VxWorks

行进间车载搜索雷达天线的法线波束指向会随着车体姿态变化而变化,影响目标探测范围与精度,而根据空间旋转关系推导的坐标系转换算法计算复杂、浮点运算多、实时性差、不利于工程应用.结合实际项目,基于嵌入式实时操作系统VxWorks,采用高精度动态水平仪实时获取搜索天线姿态信息进行发射波束补偿,再根据车体速度进行机动杂波补偿,最后采用由投影关系推导的坐标系转换算法完成目标空间位置计算,为车载其他武器系统提供准确的空情信息.实际项目试验表明,该方法切实可行,实时性好,具有一定的实用价值.

The normal beam direction of the mobile vehicular search radar antenna will change with the vehicle posture,affecting the target detection range and accuracy.Moreover,the coordinate transformation algorithm derived from spatial rotation relation is complicated in calculation,multiplex in floating point operation,and poor in real time,which is not conducive to engineering application.This paper combines with actual project,relies on embedded real-time operating system VxWorks,and uses a high-precision dynamic level to obtain real-time antenna posture data for the compensation of transmitted beam,and then carries on the maneuvering clutter compensation according to the vehicle speed.Finally,the paper employs the coordinate transformation algorithm derived from projection relation to calculate the target's spatial position,which provides accurate air situation information for other vehicle-mounted weapon systems.The actual project test shows that the proposed method is feasible,good in real time and has certain practical value.