激光周向探测系统回波功率建模和信噪比分析  

Modeling of Echo Power and Analysis of Noise Ratio of Laser Circumferential Scanning Detection System

作　　者：卢莉萍[1] 张晓倩[2] 张艳 魏飞 LU Liping;ZHANG Xiaoqian;ZHANG Yan;WEI Fei(School of Computer Science and Engineering,Xi’an Technological University,Xi’an 710021,China;School of Electronic and Information Engineering,Xi’an Technological University,Xi’an 710021,China)

机构地区：[1]西安工业大学计算机科学与工程学院,西安710021 [2]西安工业大学电子信息工程学院,西安710021

出　　处：《火力与指挥控制》2022年第9期22-25,36,共5页Fire Control & Command Control

基　　金：国家自然科学基金资助项目(62001365)。

摘　　要：为了提升激光周向扫描探测系统的探测稳定性,采用三发一收的激光周向扫描探测机理,根据弹目交会的时空关系,结合目标表面反射特性,建立激光周向扫描探测系统的激光回波功率计算模型;依据目标背景辐射特性、系统固有噪声和激光回波能量,推导了系统的信噪比计算模型,并分析了激光回波能量与弹目交会距离、激光入射角度的关系。通过模拟试验的结果,验证了在相同的弹目交会状态下,目标与导弹的距离越远,系统的信噪比越低;在相同的探测距离下,激光入射角度越大,激光回波能量越小,系统的信噪比越小;也说明了建立的激光周向扫描系统激光回波功率模型和信噪比模型是科学可行的。To improve the detection stability of laser circumferential scanning detection system,the laser circumferential scanning detection mechanism with three transmitters and one receiver is adopted in this paper. According to the temporal and spatial relationship of the intersection of missile and target and the reflection characteristics of target’s surface,the calculation model of laser echo power of laser circumferential scanning detection system is established;Based on the target background radiation characteristics,the inherent noise of system and the laser echo energy,the calculation model of signalto-noise ratio of the system is deduced,and the relation of the laser echo energy and the intersection distance of missile and target and the laser incidence angle is analyzed. Through the simulation test results,it is verified that the farther the distance between the target and the missile is,the lower the signal-to-noise ratio of the system is;At the same detection distance,the larger the laser incidence angle,the smaller the laser echo energy and the smaller the signal-to-noise ratio of the system;It also shows that the laser echo power model and signal-to-noise ratio model of the system established in this paper are scientific and feasible.

关 键 词：周向扫描 弹目交会 回波功率 信噪比 

分 类 号：TJ013[兵器科学与技术—兵器发射理论与技术]