Multi-spectral Polarization Detection Of Stealth Targets Under Complex Ground Background With Analysis Of Influence To Guidance Law

In recent years,with the development of stealth technology,especially with the appearance of various types of tanks,armor and other targets with camouflage coating,it becomes more difficult to detect these targets effectively.Especially problems of how to improve the detection of stealth targets under the ground complex background effectively and reduce the threat of stealth targets have become increasingly urgent,thus it has considerable research significance and military application value.Aiming to solve the above qestions,this paper focuses on methods and techniques of multi-spectral polarization detection of stealth targets under complex ground backgroud,main works are carried out as follows:Firstly,the spectral and polarization characteristics of ground stealthy targets are analyzed and the spectrum and polarization models are established.Then,the imaging principle of pitch-yaw seeker is analyzed.On this basis,the relationship model between the line-of-sight rate of target tracking and guidance law is deduced.Then,a three-channel multi-spectral polarization detection platform is designed and built according to the spectral characteristics and polarization characteristics of the stealthy target,and an effective detection method using three-channel multi-spectral polarization to detect stealth targets is established,including three-channel distortion correction,three-channel image registration,three-channel image fusion,fused image segmentation and segmented image target detection.Then,an improved method of Hu’s moment invariant is proposed to identify the target more effectively,and the effectiveness of the proposed method is proved by simulation test.Finally,the experimental scheme and environment are designed by using the multi-spectral polarization imaging detection system,and certain experimental results are obtained by analyzing the effect on the contrast ratio of target and background from light source azimuth,light source inclination,inclination angle of camera and different wave bands in multiple sets of experiments.