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Proceedings Paper

The principle and experiments of a new field imaging spectrometer
Author(s): Junyong Fang; Hongxing Qi; Xue Liu; Yongqi Xue; Qingxi Tong
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Paper Abstract

A combined spectral curve is measured by the traditional field spectrometers in a narrow or wide field range, and the traditional spectral curves are mixed inherently because of the low spatial resolving power. So the mixed spectral pixels were used in the traditional works on the mixed pixel decomposition. A new measure method is proposed to replace the point measurement. The spectral data is captured by the dispersal unit, and one spatial data is from the imaging CCD, and another is captured by the scanning mirror. By the new imaging spectrometer, the target image and spectral curves of every image pixel are captured simultaneously with high spatial resolution. The captured spectral curves could be regarded as the pure curves, which are very useful for the model foundation and analysis of mixed pixel and pixel decomposition. The basic dispersal principle and imaging mode is introduced in this paper. The detailed design is given by the general diagram and the composition figure. The methods and flow chart of the geometric correction and radiometric calibration are discussed in detail. Some experiments are carried out to measure the vegetation and other typical targets, the results of the images and spectral curves are given and discussed.

Paper Details

Date Published: 30 October 2009
PDF: 8 pages
Proc. SPIE 7494, MIPPR 2009: Multispectral Image Acquisition and Processing, 74940G (30 October 2009); doi: 10.1117/12.832137
Show Author Affiliations
Junyong Fang, Institute of Remote Sensing Applications, CAS (China)
Hongxing Qi, Shanghai Institute of Technical Physics, CAS (China)
Xue Liu, Institute of Remote Sensing Applications, CAS (China)
Yongqi Xue, Shanghai Institute of Technical Physics, CAS (China)
Qingxi Tong, Institute of Remote Sensing Applications, CAS (China)


Published in SPIE Proceedings Vol. 7494:
MIPPR 2009: Multispectral Image Acquisition and Processing
Faxiong Zhang; Faxiong Zhang, Editor(s)

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