基于光学遥感成像模拟软件的伪装效果检测

Camouflage Effectiveness Test Based on Optical Remote Sensing Imaging Simulation Software

通过分析以往伪装效果检测方法的不足,提出基于光学遥感成像模拟的伪装效果检测方法。采用ISODATA法对高分辨率卫星图像进行非监督分类,得到土地分类专题图,并在其上部署真目标及伪装目标,通过地物光谱数据库进行反射率转换,从而获得地面反射率图像;利用大气辐射传输软件MODTRAN对其进行大气修正,结合卫星遥感器辐射定标系数及传感器调制传递函数(MTF),最终得到卫星遥感器输出图像,对仿真过程中的输出图像进行分析,得到各种情况下的发现概率。通过系统仿真结果表明,基于光学遥感成像仿真的方法可以为伪装效果检测提供一种有效的手段。

A camouflage effectiveness test method based on optical remote sensing imaging simulation was proposed, which is better than the former test methods. Land classification thematic map obtained by using ISODATA method of unsupervised classification based on high resolution satellite data, was deployed by true and camouflage objects and converted into a ground reflectance image through reflectance conversion based on a ground object spectral library. Through atmospheric correction carried out by the atmospheric transmission software MODTRAN, satellite remote sensor radiometric calibration coefficient, and sensor modulation transfer function （MTF）, satellite remote sensor output image was obtained from a ground reflectance image. Detection probabilities under various circumstances were obtained by analyzing the output simulation image. The simulation results show that the proposed simulation method based on optical remote sensing imaging can provide an effective means for detecting camouflage effectiveness.