伪装目标与背景的偏振对比特性

Polarimetric contrast characteristics of camouflage target and background

为解决传统光强探测手段难以有效探测和识别伪装目标这一难题,基于偏振探测技术搭建了光谱偏振探测成像系统,利用该系统在位于442.0,545.5,670.5,850.5nm的窄波段对典型草地、土壤背景下的某型深绿色和土黄色伪装涂层进行了光谱偏振探测实验研究。并通过编制的图像处理软件对测试结果进行处理分析以提取其中的偏振信息,获得了目标与背景偏振度和偏振对比度随探测波长和探测角的变化规律。研究结果表明,合理地选择偏振成像探测条件可以使伪装涂层与背景之间存在较大的偏振对比度,可以实现对传统伪装涂层涂覆的目标的有效探测和识别。

In order to resolve the problem that camouflage target could hardly be detected and identified by the classical means, a spectral polarization detection system was introduced and developed at first. Then the spectral polarization experiment about the bottle green and khaki camouflage coatings in grassplot and soil were conducted by the system at the wavelengths of 442.0, 545.5, 670.5, 850.5 nm. The polarization images were deduced by the polarization information process software through processing the experiment data captured by the system. The change rule about the degree of the polarization and the polarization contrast of the target and background was discovered. The calculated result shows that by choosing proper detection condition the polarization contrast between camouflage coating and background could be enhanced. Consequently, the classical camouflage target can be detected and identified effectively by the spectral polarization system.