高温小目标红外辐射特性测量方法

发布时间：2019-01-21 10:35

【摘要】：目标的温度较高且距成像系统较远时,目标像在探测器靶面上占据多个像元且输出灰度易饱和,传统的点源目标和面源目标处理方法无法适用。针对上述问题,提出一种高温小目标辐射特性测量方法,并通过外场实验验证了该方法的有效性。首先,建立测量系统的高温定标模型,并修正平行光管透过率对定标模型的影响。然后,根据目标能量虽弥散到多个像元但到达探测器靶面的总能量不变的现象,提出一种针对高温小目标的辐射特性测量方法。最后,采用Φ600mm红外辐射特性测量系统进行外场高温小目标辐射测量实验。结果表明,考虑大气透过率和大气程辐射后,可以实现对远距离高温小目标较高精度的测量,验证了方法的有效性。
[Abstract]:When the temperature of the target is high and the target is far from the imaging system, the target image occupies more than one pixel on the target plane of the detector, and the output gray is easy to saturate, so the traditional processing method of the point source target and the non-point source target can not be applied. In view of the above problems, a method for measuring the radiation characteristics of high temperature small targets is proposed, and the effectiveness of the method is verified by field experiments. Firstly, the high temperature calibration model of the measurement system is established, and the influence of the transmittance of the parallel light tube on the calibration model is corrected. Then, according to the phenomenon that the energy of the target diffuses to multiple pixels but the total energy reaches the target surface of the detector, a method for measuring the radiation characteristics of small target at high temperature is proposed. Finally, the 桅 600mm infrared radiation measurement system is used to measure the radiation of small target at high temperature. The results show that the high precision measurement of long distance high temperature and small target can be realized by considering the atmospheric transmittance and atmospheric range radiation, and the validity of the method is verified.
【作者单位】：中国科学院长春光学精密机械与物理研究所;中国科学院大学;
【分类号】：TN219

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