中文摘要：

远程相控阵雷达担负目标搜索任务时，在一定检测概率下，特定波位的驻留时问与脉冲重复周期密切相关，如何优化设计脉，中重复周期值以节省时间资源，是一个值得研究的问题。针对远程相控阵雷达单帧搜索工作方式，提出了一种基于最小捕获时间的参数优化设计方法，并以探测临近空间高超声速目标为例，分析了捕获时间与脉冲重复周期之间的关系，给出了最优脉冲重复周期值的赋值区间。仿真结果表明，所提方法能有效节省雷达系统时间资源。

英文摘要：

When the long-range phased array radar searching the targets, the residence time of a beam varies with the pulse-repetition period under a given detection probability~ so the optimization of the pulse- repetition period is a problem needed to study. Considering the single frame searching mode of radar system, a parameter optimizing method based on the criteria of minimal capturing time for the detection of the near space hypersonic target is proposed. The relationship between the capturing time and the pulse-repetition pe- riod is analyzed. The optimal region of the pulse-repetition period is gives. Finally, the results of extensive simulations demonstrate that the pulse-repetition period can he optimized effectively to reduce the capturing time by use of the proposed approach.