无源传感器引导AESA雷达目标搜索

无源传感器引导有源电扫阵列(AESA)雷达完成目标搜索是机载多传感器协同探测的重要应用形式。综合了引导传感器的测角误差以及目标运动产生的偏差2种因素,建立目标指示成功概率模型。提出了一种满足时效性、指示成功率和误交接概率要求的最优搜索策略。采用分步优化的方法在多种场景下对搜索策略和性能指标进行了计算。仿真结果表明:提出的搜索策略与传统搜索策略相比在满足指示成功率要求的前提下,通过增加较少的搜索波位,较大幅度地降低了误交接概率,保证了引导条件下目标搜索的准确性。

Research on Passive Sensor Cueing of AESA Radar for Target Searching

Passive sensor cueing of Active Electronically Scanned Array (AESA) radar searching on specified regions is an important application form of airborne multi-sensor cooperating. In comprehensive consideration of the cueing sensor observation error and target''s velocity error, a successful cueing probability density model is established. An optimized target searching strategy satisfied the requirement of timeliness, successful cueing probability and false cueing probability is presented. The searching strategy and performance index are calculated under multi-scenario by using the stepwise optimization method. The simulation result shows that in comparison with the traditional method the proposed method can meet the requirements of successful cueing probability, through increase little beam positions and simultaneously can decrease the false hand-off probability obviously.