一种机载光电平台下基于几何模型的被动定位方法  

A Geometric Model-Based Passive Localization Method Under Airborne Electro-Optics Platforms

作　　者：马捷 张成 樊新会 MAJie;ZHANG Cheng;FAN Xin-hui(Ministry of Naval Equipment,Beijing 100000,China;Huazhong Institute of Electro-Optics-Wuhan National Laboratory for Optoelectronics,Wuhan 430223,China)

机构地区：[1]海军装备部,北京100000 [2]华中光电技术研究所—武汉光电国家研究中心,湖北武汉430223

出　　处：《光学与光电技术》2024年第2期9-15,共7页Optics & Optoelectronic Technology

摘　　要：现代军事冲突中,光电对抗技术得到了越来越广泛的应用,隐蔽性也是战机不可忽略的重要一环。由于发射电磁波测距容易暴露自身位置,而单站无源或被动定位技术具有体积小、自身隐蔽性好和机动性高等诸多优点,因此它在现代战争中具有重要的应用前景。按照先定位后测距的思想,从对单机载被动定位算法的角度出发,通过在大地坐标系下建立三种几何模型对比分析了所提方法与传统被动测距方法在解算速度和精度上的差异。通过对机载目标实际应用场景进行建模设计,两种算法分别在高度2500 m、解算频率500 Hz情况下对俯仰角进行滤波后解算有效返回距离值,实验对比得出所提被动定位算法比传统被动测距方法的计算复杂度大幅降低,平均解算时间提升约56.91%,极大增加了机载目标解算频率,节省了更多计算资源,同时还保证了定位精度稳定性,能够满足实际使用需求。In the modern military conflict,the optoelectronic countermeasure technology has been more and more widely used,and concealment is also an important part of the warplanes,which can not be ignored.Due to the launch of electromagnetic wave ranging is easy to leak their own position,single station passive or passive positioning technology has many advantages such as small size,good concealment and high mobility,so it has an important application prospect in modern war.In this paper,in accordance with the idea of positioning before ranging,from the perspective of single airborne passive positioning algorithm,the differences between the proposed method and the traditional passive ranging method in terms of solving speed and accuracy are compared and analyzed by establishing three kinds of geometrical models under the geodetic coordinate system.By modeling and designing the actual application scenarios of airborne targets,the two algorithms are respectively used to solve the effective return distance values after filtering the pitch angle at an altitude of 4000 m and a solving frequency of 500 Hz.The experimental comparisons result in a significant reduction in the computational complexity of the proposed passive positioning algorithm compared with the traditional passive ranging methods,and an increase in the average solving time of about 56.91%,which greatly increases the frequency of solving the airborne targets and saves more computational resources at the same time.It greatly increases the frequency of on-board target solving,saves more computational resources,and also ensures the stability of positioning accuracy,which can meet the requirements of practical use.

关 键 词：光电对抗 被动定位 运动模型 解算频率 均值滤波 

分 类 号：TN206[电子电信—物理电子学]