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针对实际情况下机载预警雷达虚警多、易掉点和俯仰角误差大从而导致航迹起始困难的问题,在WGS-84坐标系下建立载机和目标运动模型,根据目标径向速度的求解公式,推导了相邻周期内目标径向速度的差值波门,提出一种引入径向速度差值波门的航迹起始算法。仿真表明,该算法在杂波环境下能有效起始航迹,相对于传统的逻辑法,提高了正确航迹起始率,降低运算量。
In view of the fact that the airborne early warning radar has many false alarm points, easy fall points and large pitch angle errors, which leads to the difficulty of starting the track, the carrier and the target motion model are established under the WGS-84 coordinate system. According to the target radial velocity The differential wave gate of the target radial velocity in adjacent cycles is deduced and a track initiation algorithm is introduced to introduce the radial velocity differential wave gate. The simulation results show that this algorithm can effectively start the track in the clutter environment. Compared with the traditional logic method, the algorithm improves the initial track of the correct track and reduces the computational complexity.