根据常规弹药最佳定向起爆要求, 针对弹目交会环境, 建立脉冲激光周向探测系统单次和二次扫描最佳起爆延时模型和最佳起爆方位角模型.运用Matlab对模型参量进行数值仿真, 分析探测方位角、弹目间距和目标俯仰角对最佳起爆延时和起爆方位角的影响.结果表明：当激光扫描到单次目标时, 最佳起爆延时随弹目之间距离的增大而增大, 随探测方位角的增大先减小后增大, 最佳起爆延时的变化范围在0~20 ms之间；当脉冲激光周向探测系统扫描到二次目标时, 在大部分时间内最佳起爆延时时间为0 ms；在非零区域内, 最佳起爆延时随弹目之间距离的增大而增大, 随探测方位角的增大先变大后变小.

According to the requirements of the optimum directional detonating of conventional ammunition, the models of optimum detonating delay time and optimum detonating azimuth were established for single and double scan of the pulse laser circumferential detection system. Matlab is used to simulate the parameters of the model. The influence of detection azimuth, missile-target distance and target pitch angle on the optimum delay time and the detonating azimuth was analyzed. When the laser circumferential detection system scans a target once, the optimal initiation time increase withs the increasing of the missile-target distance, and then increases with the increasing of the azimuth. The change range of the optimal initiating delay is between 0 ms and 20 ms. When the pulse laser circumferential detection system scans target twice, the optimal initiation delay time is 0 ms in most of the time. In the non-zero region, the optimal initiation delay increases with the increasing of missile-target distance.