In recent years,natural disasters especially earthquakes,landslides,debris flow,forest fires and other major natural disaster events have occured frequently in China,causing many casualties and loss of property.With t...In recent years,natural disasters especially earthquakes,landslides,debris flow,forest fires and other major natural disaster events have occured frequently in China,causing many casualties and loss of property.With the rapid development and application,remote sensing technology has played a very important role in disaster rescue and post-disaster rebuilding.Remote sensing technology is used to obtain images of展开更多
In order to make quantitative watercolor sensing with China-Brazil Earth Resources Satellite(CBERS-02)CCD camera,the MODIS data with higher accuracy is used to cross-calibrate the CCD camera over water targets.In homo...In order to make quantitative watercolor sensing with China-Brazil Earth Resources Satellite(CBERS-02)CCD camera,the MODIS data with higher accuracy is used to cross-calibrate the CCD camera over water targets.In homogeneous clear water area,two pairs of images obtained over the same area on the same day by the two sensors are selected.The top-of-atmosphere(TOA)radiances of the multispectral bands of CCD are calculated with the water and aerosol parameters from MODIS based on a water-atmosphere radiative transfer algorithm.The stripes in CCD image that caused by unequal response of the CCD array detectors are firstly removed before making the cross-calibration.The same part of CCD detectors is selected for the calibrations in the two images to eliminate the residual error of destriping and uniformity correction for the focus plane irradiance.It is shown that the calibration results from two different images are consistent.The error of this method is about 5%.展开更多
文摘In recent years,natural disasters especially earthquakes,landslides,debris flow,forest fires and other major natural disaster events have occured frequently in China,causing many casualties and loss of property.With the rapid development and application,remote sensing technology has played a very important role in disaster rescue and post-disaster rebuilding.Remote sensing technology is used to obtain images of
基金supported by the HY-1Ground Application System,the National Hi-Tech Program(Grant Nos.2001AA636010/7010/7030,2002AA639160)and National Administration of Space Technology Project“HY-1 Calibration and Navigation Algorithm”+2 种基金The hundred talents program of CAS(KZCX0415)the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry(HX040013)the fund from Commission of Science Technology and Industry for National Defense(KJSX0401).
文摘In order to make quantitative watercolor sensing with China-Brazil Earth Resources Satellite(CBERS-02)CCD camera,the MODIS data with higher accuracy is used to cross-calibrate the CCD camera over water targets.In homogeneous clear water area,two pairs of images obtained over the same area on the same day by the two sensors are selected.The top-of-atmosphere(TOA)radiances of the multispectral bands of CCD are calculated with the water and aerosol parameters from MODIS based on a water-atmosphere radiative transfer algorithm.The stripes in CCD image that caused by unequal response of the CCD array detectors are firstly removed before making the cross-calibration.The same part of CCD detectors is selected for the calibrations in the two images to eliminate the residual error of destriping and uniformity correction for the focus plane irradiance.It is shown that the calibration results from two different images are consistent.The error of this method is about 5%.
