蓝绿激光在水下目标精细探测中具有重要的应用前景。基于端面圆周的快速数值遍历算法, 通过建立扫描光束与运动目标的交会方程, 对水下目标的激光扫描探测过程进行了数值建模。结果表明: 目标穿越光束扫描区的最短时间并非出现在迎头相遇的交会情况中。其次, 通过采用蒙特卡罗模拟, 仿真分析了脉冲频率、扫描频率、扫描半角以及目标距离对探测概率的影响, 并得出扫描参数的最优设计。文中建立的数值模型可为水下激光探测系统的合理设计提供理论依据。

Blue-green laser has an important application prospect in the fine detection of underwater targets. Based on the fast numerical traversal algorithm of the head-tail circumferences, the laser scanning detection process of underwater targets was numerically modeled by establishing the intersection equation of the scanning beam and the moving target. The results show that the shortest time for the target to cross the beam scanning area does not occur in the case of the head-on encounters. Secondly, by Monte Carlo simulation, the effects of pulse frequency, scanning frequency, scanning half angle and target distance on the detection probability were simulated and the optimal design of scanning parameters was obtained. The established numerical model can provide a theoretical basis for the reasonable design of underwater laser detection system in this paper.