The spectral reflectivity of the artificial target and natural background is similar, but the polarization characteristic is very different. In this paper, based on single reflection theory, the Mueller matrix model of single reflection is derived, and then the Mueller matrix measurement experiment of paint plates is carried out. The experimental results show that, different with natural backgrounds, the single reflection characteristics of artificial camouflage targets are obvious. Especially with small incident angle or small roughness, single reflection features of paints are more distinct, and depolarization ability is weak.
It is an important subject in information scout, battlefield surveillance and automatic target recognition to detect interesting objects from complicated background. Compared with intensity detection, polarization detection has its advantage in identifying some camouflage targets. Usually, in the studies of target polarization detection, circular polarization property is usually neglected because of its small value. But in particular conditions, the circular polarization property of target will be used to accomplish object detection with their obviously different value. In this study, a single reflectance model of Mueller matrix is established, and based on Fresnel's law, circular polarization property of object is analyzed which is obvious while linear polarization property is obscure in particular condition. It is available to use the circular polarization component to detect target.
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