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论证了红外探测器和热成象系统的所有评价参数：响应度Ｒ、探测度Ｄ、信号Ｖｓ、信噪比Ｖｓ／Ｖｎ、最大作用距离／ｍａｘ及温差分辨率ＮＥＴＤ、ＭＲＴＤ、ＭＤＴＤ等，无一例外，均要求光谱匹配因数要大。光谱匹配因数能定量反映热成象系统中不同光谱响应的红外探测器，在不同天气和不同光学系统光谱透过率下，对不同温度目标辐射光谱分布的光谱匹配，因此它是能真实、客观、全面、系统、综合、定量反映热成象系统探测效果的最佳综合评价参数。
All the evaluation parameters of infrared detector and thermal imaging system are demonstrated: responsivity R, detection degree D *, signal Vs, signal to noise ratio Vs / Vn, maximum working distance / max and temperature difference resolution NETD, MRTD and MDTD, Without exception, require a large spectral matching factor. The spectral matching factor can quantitatively reflect the infrared detectors with different spectral responses in thermal imaging system. It can match the spectral distribution of different temperature target radiation spectrum under different weather and different spectral transmittance of optical system, so it is real and objective , Comprehensively, systematically, synthetically and quantitatively, the best comprehensive evaluation parameter which can reflect the detecting effect of thermal imaging system.