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大疆无人机目标红外辐射特性测量及温度反演

Infrared radiation characteristics measurement and temperature retrieval based on DJI unmanned aerial vehicle

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摘要

随着无人机技术在各个领域崭露头角,无人机目标在红外波段的辐射特性成为人们非常关注的问题。本文首先对中、长波红外探测器进行辐射定标,针对飞行中的无人机目标的辐射特性进行测量,对飞行状态下的无人机目标的温度进行了反演,分别采用了单波段、双波段比色法、基于黑体校正的双波段法进行探测,结合实测数据对上述各种方法进行了分析对比,对测量结果进行了精度分析并给出误差源。结果表明,实验中的无人机中波辐射强度约为0.04 W/sr、长波辐射强度在0.5 W/sr左右,采用基于黑体校正的双波段测量方法能极大提高无人机目标温度反演的精度。反演温度的绝对误差降低至2 K,相对误差仅为0.5%左右。

Abstract

With the initial applications of unmanned aerial vehicle technology in various fields, the infrared (IR) radiation characteristic of the UAV becomes an issue of mutual concern. In this experiment, the radiometric cali-bration of middle wave and long wave infrared detectors has been done firstly. The radiation characteristics of the UAV are measured while flying, and the temperature of UAV target is inverted by using single-band method, dual-band colorimetric method and dual-band method based on black-body calibration. Combined with the real measured data, the above methods are analyzed and compared. The measurement precision is analyzed and error source is given. The results show that radiation intensity of UAV is about 0.04 W/sr in middle IR wave, and 0.5 W/sr in long IR wave. Dual-band method based on black-body calibration can improve the precision of UAV temperature inversion greatly, the absolute error of temperature retrieval reduces to 2 K, and relative error is about 0.5%.

Newport宣传-MKS新实验室计划
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中图分类号:TP732.2

DOI:10.3969/j.issn.1003-501x.2017.04.007

所属栏目:光电进展

基金项目:国家“十二五”国防预研项目(41101050501);上海市现场物证重点实验室基金资助项目(2011xcwzk04)。

收稿日期:2016-10-17

修改稿日期:2016-12-31

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陈超帅:中国科学院红外探测与成像技术重点实验室,上海 200083中国科学院大学,北京 100049中国科学院上海技术物理研究所,上海 200083
王世勇:中国科学院红外探测与成像技术重点实验室,上海 200083中国科学院上海技术物理研究所,上海 200083

联系人作者:陈超帅(chencs_1991@126.com)

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引用该论文

Chaoshuai Chen,Shiyong Wang. Infrared radiation characteristics measurement and temperature retrieval based on DJI unmanned aerial vehicle[J]. Opto-Electronic Engineering, 2017, 44(4): 427-434

陈超帅,王世勇. 大疆无人机目标红外辐射特性测量及温度反演[J]. 光电工程, 2017, 44(4): 427-434

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