基于锁角环路的空间多目标跟踪算法

为了解决传统的移动多目标跟踪计算量大、实时性差的问题,针对阵列天线提出一种基于锁角环路的多目标跟踪算法.该算法利用正交波束空间矩阵,对多个目标的分布范围进行初始定位,并以此作为锁角环路的初始状态；在得到方位的粗估计后,采用基于空间相关器的锁角环路,对快速移动目标源进行自适应的实时跟踪,该算法既保证了环路在任意初始状态下都能进入锁定状态,又提高了环路的跟踪性能.仿真表明：该算法在跟踪多个空间目标时不但具有较高的精度,而且有很好的实时性.同基于PASTd的跟踪算法相比,在性能相近的条件下,有效地降低了计算复杂度.

Tracking algorithm for multiple spatial targets based on direction lock loop

A tracking algorithm for array antenna based on the direction lock loop was proposed in order to overcome the drawbacks of large computational cost and poor real-time performance of the traditional moving multiple targets’ tracking. With the orthogonal beam-space matrix, the initiating state of the direction lock loop was estimated by the coarse multiple targets’ range. After the coarse estimation of direction, the fast moving targets were tracked adaptively in real-time with the direction lock loop which was based on the spatial correlator. This algorithm not only guarantees the loop to reach the locked state under any condition, but also improves the tracking performance. Simulation shows that the proposed algorithm can reach both high accuracy and real time performance when tracking multiple spatial targets. Compared with the PASTd algorithm, this algorithm has lower computational complexity with similar performance.