铀矿地质2018，Vol.34Issue(3)：174-179,6.DOI:10.3969/j.issn.1000-0658.2018.03.007
基于吸收深度系数的SASI机载成像光谱仪光谱定标方法研究
Spectral Calibration of SASI Airborne Hyperspectral Sensor Using Absorption Depth Features
摘要
Abstract
A spectral calibration method base on absorption depth coefficient was presented in this paper.This method was performed by an optimization procedure that minimizes the spectrum absorption depth deviation betweenairborne image spectrum and ground spectrum resultedby using spectral fitting and continuum removal.The new spectral calibration method was used to calibrate the SASI(Shortwave Airborne Spectrographic Imager)sensor image calibration site in Gansu province.The test results showed that the absorption depth coefficient calibration spectral are consistent with the field spectra.By comparing the data of laboratory calibration,the accuracy of reflectivity data after calibration optimization is improved obviously,which means the method can be used to assess the accuracy of ground spectrum feature and correct the "smile" effect of the airborne imaging spectrometer.关键词
吸收深度/SASI机载成像光谱仪/去连续统/光谱定标Key words
absorption depth/airborne image spectrometer SASI/spectral fitting/continuum removal/spectral calibration分类
天文与地球科学引用本文复制引用
秦凯,陈建平,赵英俊,裴承凯,张东辉..基于吸收深度系数的SASI机载成像光谱仪光谱定标方法研究[J].铀矿地质,2018,34(3):174-179,6.基金项目
国家自然科学基金青年基金项目(编号:41602333). （编号:41602333）
