光学学报, 2013, 33 (7): 0712002, 网络出版: 2013-06-25   

基于陷阱探测器的辐亮度探测器定标方法研究

Research on Calibration of Radiance Detector Based on Trap Detector
作者单位
中国科学院通用光学定标与表征技术重点实验室,安徽 合肥 230031
摘要
辐亮度探测器由陷阱探测器、滤光片和精密光阑等构成,其辐亮度响应度可溯源于低温绝对辐射计。通过精确测量陷阱探测器绝对光谱响应度、滤光片光谱透射率、精密放大电路增益、光阑尺寸及间距等参数获取了辐亮度探测器的绝对光谱辐亮度响应度,并对其进行了整机性能测试,评估了绝对光谱辐亮度定标过程中的不确定度,定标联合标准不确定度优于1.26%(置信概率系数k=1),满足光学遥感器高精度定标应用需求。
Abstract
Radiance detector (RD) is composed of trap detector, interference filter and precision stops. Its radiance responsivity can be traced from the cryogenic absolute radiometer. The absolute spectral responsivity of RD is obtained by measuring absolute responsivity of trap detector, spectral transmittance of filter, gain of trans-impedance amplifier, diameters of field stop and aperture stop and the distance between them, accurately. The overall performance is measured and the uncertainties are evaluated in detail. The combined standard uncertainty in the absolute spectral radiance responsivity calibration is less than 1.26% (confidence probability coefficient k=1), which can meet the high-precision calibration requirement of remote sensors.
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邹鹏, 郑小兵, 吴浩宇, 李健军, 刘恩超, 洪津, 熊伟. 基于陷阱探测器的辐亮度探测器定标方法研究[J]. 光学学报, 2013, 33(7): 0712002. Zou Peng, Zheng Xiaobing, Wu Haoyu, Li Jianjun, Liu Enchao, Hong Jin, Xiong Wei. Research on Calibration of Radiance Detector Based on Trap Detector[J]. Acta Optica Sinica, 2013, 33(7): 0712002.

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