光谱学与光谱分析 |
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Calibration of the Detection Performance for Hyperspectral Imager |
XU Qiang1,3,JIN Wei-qi1,FU Lian-qiu2 |
1. Department of Optical-Electrical Engineering, Beijing University of Technology, Beijing 100081, China 2. Security Printing Institute of People’s Bank of China, Beijing 100070, China 3. Northeast Institute of Electronic Technology, Jinzhou 121000, China |
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Abstract As an image-spectrum merging technology, hyperspectral imaging has been used in battlefield reconnaissance rapidly. The calibration of hyperspectral imager is a process that corrects itself’s output. An UV/Vis/NIR hyperspectral military detection system based on BTCCD and concave grating parts is analyzed, and it’s spectral resolution is 3.3 nm. Some calibration and evaluation methods are discussed for hyperspectral imaging system which operates at 0.25-1.1 mm waveband. Image quality assessment based on an uniform radiation source with target, spectral quality assessment based on laser and Hg lamp,and radiation performance calibration based on high accuracy standard are researched detailedly. After several steps of radiation calibration and spectral fidelity verification, the reflective curve which represents the objective spectral character was obtained, satisfying the requirement of 0.2 mrad spatial resolution and ±0.5% dispersive linearity. Finally, satisfactory results were obtained with these methods in a military detection system.
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Received: 2006-05-10
Accepted: 2006-08-20
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Corresponding Authors:
XU Qiang
E-mail: xu_q@263.net
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Cite this article: |
XU Qiang,JIN Wei-qi,FU Lian-qiu. Calibration of the Detection Performance for Hyperspectral Imager[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(09): 1676-1679.
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URL: |
https://www.gpxygpfx.com/EN/Y2007/V27/I09/1676 |
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