脉冲激光分布式扫描参数的优化分析

Optimization Analysis of Pulse Laser Distributed Scanning Parameters

提出一种基于激光脉冲扫描测量体制下的高速点目标捕获、跟踪测量方法,应用匀速运动模型模拟仿真目标的轨迹及分布概率;考虑脉冲激光光斑分布的相关参数,建立脉冲激光扫描捕获点目标的理论模型。提出了一种基于时间序列法的捕获方法,用以求解针对目标模型脉冲激光在一帧扫描时域内的捕获次数。在此基础上对激光分布式扫描光斑布局的主要参量进行数值仿真分析,进而提出一种针对目标运动特性、激光传感器特性的最优化扫描方式,以提高一帧扫描时域内的捕获概率和捕获次数,缩短捕获时间;结合算例通过半实物仿真实验验证最优化扫描方式的可行性。所提方法为激光跟踪系统的脉冲频率、扫描频率与目标运动模型的最佳匹配提供了依据。

A high-speed point target acquisition and tracking measurement method based on laser pulse scanning measurement system is proposed.The constant velocity motion model is used to simulate the target trajectory and target distribution probability;considering pulse laser spot distribution parameters,the theory model of pulse laser scanning capture point target is established.A capture method based on time series method is proposed to solve the number of capture of the target model pulsed laser in one frame scanning process.On the basis of this,the main parameters of the laser distributed scanning spot layout are simulated and analyzed.Then,an optimal scanning method is proposed to improve the capture probability,the capture number and the acquisition time for the characteristics of motion target and laser sensor.The feasibility of optimal scanning method is verified through the semi-physical simulation experiment combined with an example.The proposed method provides the basis for the best matching of the pulse frequency,scanning frequency of the laser tracking system and target motion model.