基于GLRT的红外多光谱弱小运动目标检测  

Dim moving target detection in multispectral IR image sequence based on GLRT

作　　者：王暕来[1] 杨春玲[1] 戴景民[1] 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江哈尔滨150001

出　　处：《红外与毫米波学报》2011年第2期149-155,共7页Journal of Infrared and Millimeter Waves

基　　金：国家自然科学基金资助项目(60877065/F050401);哈尔滨市科技局学科带头人基金(RC2008XK009004)

摘　　要：针对多光谱红外图像序列中未知光谱辐射强度、位置和速度的弱小运动目标检测问题,建立了与之相应的基本框架模型.对于这种含参信号的复合假设检验问题,采用广义似然比检验(GLRT)得到了该问题的检测算子,同时利用速度滤波器组在实际应用中实现了该检测算子.从理论角度估计了该算法的虚警概率和检测概率,并通过计算机仿真验证了上述分析结果.为了评估该算法的有效性,采用人工合成的多光谱红外图像序列对其进行测试,结果说明该算法对于低信噪比条件下的弱小运动目标具有良好的检测效果.The scope of this paper addressed the problem of detecting a dim moving target from a sequence of multispectral IR cubes.The detection problem was formulated in a general framework,assuming unknown target amplitude,position and velocity.This composite hypothesis testing problem was approached by means of the generalized likelihood ratio test（GLRT） theory.The detector structure and its actual implementation based on velocity filters were discussed in detail.Approximated expressions of the false alarm and detection probabilities were obtained and validated by means of simulation.To test the effectiveness of the detection algorithm,the detection results obtained on a set of synthetic multispectral IR image sequences were presented and discussed.These results indicate that the algorithm proposed can obtain a good performance on dim target detection with low SNR.

关 键 词：弱小目标检测 多光谱红外图像序列 广义似然比检验 速度滤波器 

分 类 号：TJ765.4[兵器科学与技术—武器系统与运用工程] TP751[自动化与计算机技术—检测技术与自动化装置]