基于不变矩特征的光电目标机动检测算法  

Invariable Statistical Moments-based Maneuver Detection Algorithm of Electro-optical Target

作　　者：杨绍清[1] 吴兴宇 YANG Shaoqing;WU Xingyu(Dalian Naval Academy,Dalian 116018)

机构地区：[1]海军大连舰艇学院,大连116018

出　　处：《舰船电子工程》2024年第12期183-190,共8页Ship Electronic Engineering

摘　　要：机动检测是机动目标跟踪的一项关键技术,能够及时准确地检测目标开始机动时刻,将能够及时准确地确定目标运动模型,从而提高目标跟踪精度。常用的基于目标位置测量的机动检测算法,需要用一段时间目标位置状态变化来进行检测,故机动检测延迟高、精度低,难以满足对高速机动目标高精度跟踪的需求。针对水面舰艇近程反导舰炮武器系统中光电目标图像信息特点,将目标机动与光电目标姿态信息相关联,提出了一种基于不变矩特征的光电目标机动检测方法。通过可视化仿真方法建立了反舰导弹三维模型,采用龙格-库塔法求解弹道微分方程,结合虚拟现实技术,实现了由三种方案弹道配合末端四种导引律组合的八种典型弹道的光电目标图像仿真。仿真实验表明,利用不变矩及其变形特征作为机动检测依据,能及时有效检测目标的机动,为近程末端防御武器系统有高精度跟踪高速机动目标提供了新方法。Maneuver detection is a key technology of maneuver target track.If the moment when a target starts to maneuver can be obtained,target model can be more precisely determined and the accuracy of track will be improved.Many common methods based on a target positions rely a series of changes of position and need more time to detect the maneuver,so these methods have a longer delay and lower track accuracy,and cannot satisfy the demand of tracking high speed and maneuver target.By using the char⁃acteristics of electro-optical image information in CIWS,and based on invariable statistical moments,an algorithm is developed which connects target maneuver with its pose in image.The three-dimensional model of anti-ship missile is established by visual simulation method,and the trajectory differential equation is solved by Runge-Kutta methods.Combined with virtual reality technol⁃ogy,the image simulation of eight typical ballistic photoelectric targets is realized,which is composed of three ballistic schemes and four guidance laws at the end.Experiments show invariable statistical moments can efficiently detect the maneuver in time,and the algorithm is a novel method of high maneuver detecting for CIWS.

关 键 词：不变矩特征 机动检测 光电目标 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]