基于二阶振动系统响应模型的激光制导信号动态模拟

Research on simulation of dynamic laser guided signals based on two-order response system's models

针对载机平台上的激光目标指示器照射过程的动态响应及其模拟,利用高斯白噪声,通过由滤波器产生的有色噪声的方法模拟了目标指示器指示激光光斑抖动信号的统计平均特征,分别进行了抖动光斑位置随时间变化和在简化地物模型下漫反射信号强度随时间变化的动态模拟以及实际验证测试。经分析表明:在载机平台上,激光动态照射过程中的反射信号强度的变化是与平台相对于目标运动、目标表面的漫射特性和反射特性等因素相关的综合函数;基于二阶振动系统响应模型的方法可应用于激光目标指示器照射过程中的激光制导信号的大气传输和探测的动态模拟。

The process analysis of the two-order dynamic response of Laser Target Designators（LTD） and the aiming errors are introduced in the Air-borne platform LTD random position jittering simulation.The Gauss white noises and the filtered colored noises are used to simulate the dynamic statistical characters of LTD jittering facula＇s time-response position and diffuse reflected energy under the simplified model of targets,together with the test results of the two different kinds of materials.The analysis shows that the dynamic diffuse reflected energy is related to the movement between platform and targets,the target＇s surface diffuse reflection characters and surface reflection characters.The method and the results can be used in the dynamic simulation of LTD signals＇ atmosphere propagation and detection.