一种结合惯导信息的红外弱小目标检测方法  

Detecting Method Combining Inertial-Navigation Information for Dim Infrared Targets

作　　者：郭铭嘉 赵晟 刘会文 申涛 雷昊 朴宇鹏 曹耀心 吴建东 GUO Mingjia;ZHAO Sheng;LIU Huiwen;SHEN Tao;LEI Hao;PIAO Yupeng;CAO Yaoxin;WU Jiandong(The Third Shanghai Military Representative Office,Nanjing Military Representative Bureau of Army Equipment Department,Shanghai,201109;Shanghai Aerospace Control Technology Institute,Shanghai,201109)

机构地区：[1]陆军装备部驻南京地区军事代表局驻上海地区第三军事代表室,上海201109 [2]上海航天控制技术研究所,上海201109

出　　处：《飞控与探测》2020年第1期42-48,共7页Flight Control & Detection

摘　　要：为了筛除红外制导导弹视场中的各种背景干扰,提出了一种基于惯导信息提取目标运动特性、辅助图像系统检测目标的方法。该方法首先根据惯导数据提取出海天线的位置、缩小检测目标的范围,然后预估出导弹对目标的视线角速度,并与图像系统的测量结果相比较以筛选目标。研究中通过仿真实验对该方法进行了验证,发现导弹在飞行时其视场中的目标会迅速穿过海天线,从空背景移动到海背景上,而且导弹对目标与干扰的视线角速度的差值始终处在较明显的水平,因此这种结合惯导与红外信息排除背景干扰的方法是可行的。该方法解决了传统红外目标检测方法中目标与干扰红外特征相似、运算量大以及检测效果易受环境影响等问题。Base on the inertial-navigation system,this article provides a method which can assist in removing the background disturbances for the infrared-guidance missiles by extracting the kinetic characteristics of targets.By the inertial-navigation information,this method firstly gets the position of the sea-sky line and narrows down the area of inferring targets,then calculates the sight angular velocity and compares it with the infrared information to distinguish the targets.The simulation tests find that during the flight process of the missile,the target moves from the sky-background to the sea-background quickly and the differences of sight-angular-velocities between target and disturbances are distinguishable for the missile seeker,which shows that the method is applicable.This method solves the problems such as the indistinct differences between targets and disturbances,a large amount of computation and instabilities under environmental changes,which arise frequently in the traditional methods which only rely on the infrared information.

关 键 词：弱小目标 惯导信息 背景干扰 海天线 视线角速度 

分 类 号：TP312[自动化与计算机技术—计算机软件与理论]