宽动态范围红外辐射测量系统快速定标算法
发布时间：2019-04-27 06:47
【摘要】：红外辐射测量系统的宽动态范围定标通常是在多个温度点下,设置多个积分时间并适当加入衰减片的方式实现的。其不仅效率低、耗时长、成本高且影响整个红外辐射测量系统实时性和机动性。对此,在考虑积分时间的定标模型基础上,提出宽动态范围快速定标方法。只需调节一次积分时间和一次温度即得到宽动态范围任意积分时间的定标方程。利用Φ400 mm红外辐射测量系统对快速定标方法的定标精度、测量精度进行验证。实验结果表明:快速定标方法与直接定标结果之间最大误差为2.75%,该方法外场测量时最大辐射测量误差为11.69%,相比传统辐射测量最大误差不超过1.52%。说明快速定标方法能有效地保证系统辐射定标精度,提高辐射测量系统的定标效率,缩短定标时间,实现对系统宽动态范围任意积分时间的定标。整个辐射测量过程实时性好,操作简单、易实现且可靠性高,适应针对外场条件下红外辐射特性测量系统的要求,外场测量结果也说明快速定标可以直接应用于靶场目标的红外辐射测量任务中。
[Abstract]:The wide dynamic range calibration of infrared radiometric measurement system is usually realized by setting multiple integration time and adding attenuation plate properly at multiple temperature points. It is not only low efficiency, long time-consuming, high cost, but also affects the real-time and mobility of the whole infrared radiation measurement system. In this paper, a fast calibration method with wide dynamic range is proposed on the basis of the calibration model considering the integration time. The calibration equation of arbitrary integration time in a wide dynamic range can be obtained by adjusting the integration time and temperature once. The calibration accuracy and measurement accuracy of the fast calibration method are verified by 桅 400 mm infrared radiometric measurement system. The experimental results show that the maximum error between the rapid calibration method and the direct calibration result is 2.75%, and the maximum radiation measurement error is 11.69% in the external field measurement, which is less than 1.52% compared with the traditional radiometric measurement. It is shown that the fast calibration method can effectively ensure the accuracy of the system radiation calibration, improve the calibration efficiency of the radiation measurement system, shorten the calibration time, and realize the calibration of arbitrary integral time in the wide dynamic range of the system. The whole radiation measurement process has the advantages of good real-time performance, simple operation, easy realization and high reliability, which can meet the requirements of infrared radiation characteristic measurement system under the condition of external field. The field measurement results also show that the fast calibration can be applied directly to the infrared radiation measurement of the target in the target range.
【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;
【基金】：国家自然科学基金(51275504)
【分类号】：TN216
[Abstract]:The wide dynamic range calibration of infrared radiometric measurement system is usually realized by setting multiple integration time and adding attenuation plate properly at multiple temperature points. It is not only low efficiency, long time-consuming, high cost, but also affects the real-time and mobility of the whole infrared radiation measurement system. In this paper, a fast calibration method with wide dynamic range is proposed on the basis of the calibration model considering the integration time. The calibration equation of arbitrary integration time in a wide dynamic range can be obtained by adjusting the integration time and temperature once. The calibration accuracy and measurement accuracy of the fast calibration method are verified by 桅 400 mm infrared radiometric measurement system. The experimental results show that the maximum error between the rapid calibration method and the direct calibration result is 2.75%, and the maximum radiation measurement error is 11.69% in the external field measurement, which is less than 1.52% compared with the traditional radiometric measurement. It is shown that the fast calibration method can effectively ensure the accuracy of the system radiation calibration, improve the calibration efficiency of the radiation measurement system, shorten the calibration time, and realize the calibration of arbitrary integral time in the wide dynamic range of the system. The whole radiation measurement process has the advantages of good real-time performance, simple operation, easy realization and high reliability, which can meet the requirements of infrared radiation characteristic measurement system under the condition of external field. The field measurement results also show that the fast calibration can be applied directly to the infrared radiation measurement of the target in the target range.
【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;
【基金】：国家自然科学基金(51275504)
【分类号】：TN216
【参考文献】
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1 余毅;常松涛;王e，
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