红外辐射特性测量中环境影响的修正研究

Atmosphere amending research in infrared radiation characteristic measurement

红外辐射特性测量是导弹预警和识别的主要手段,相关研究具有较大的军事应用价值。而红外辐射特性测量过程中的环境影响修正一直是影响测量精度的难点。介绍了通过放置在目标附近的大面源灰体修正环境影响的方法,经过理论分析及实验验证,发现"黑体标定曲线"和"参考曲线"相交于环境温度点,并且根据这两个曲线可计算出环境影响的斜率修正系数和偏置修正系数,对目标的灰度值进行相应的修正就可以准确地计算出目标的温度等红外辐射特性。

Infrared radiation characteristics measurement is the main method for the precaution and discrimination of missiles,relevant research is worthy in military application. And the atmosphere amending is a difficulty which influences precision in infrared radiation characteristic measurement. The method amending atmosphere influence is introduced, which places large area gray body beside the target. After academic analysis and experiment research, it is found that the ＂black body demarcation curve＂ and ＂reference curve＂ intersect at the atmosphere temperature point, and the slope amending coefficient and offset amending coefficient could be calculated based this two curve. After corresponding amending on target gray, the infrared radiation characteristics could be calculated by rule and line.