从辐射传输理论出发,计算分析了目标特性对0.4~14μm波段范围内的目标背景对比度的影响,计算结果显示,在其他条件不变的情况下:1)随着目标物固有亮度的增加,目标背景对比度增加,而且其谱分布也发生相应的变化,紫外与可见光区的对比度增加幅度大于红外区的增加幅度;2)目标物固有亮度的谱分布影响着目标背景对比度的谱分布;3)随着目标物表面反射率的增加,目标背景对比度的值也增加,并且目标物表面反射率的谱分布也影响着目标背景对比度的谱分布.
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