GF-4可见光及近红外谱段的辐射定标
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摘要
"高分四号"是我国高分辨率对地观测系统中唯一一颗地球同步轨道遥感卫星,应用于环境及林火监测等领域。GF-4数据有很高的空间分辨率,但是辐射特性存在偏差从而导致辐射精度并不是很高。为了提高GF-4卫星数据辐射和LandSat8数据为基准影像,以敦煌辐射校正场作为试验区对GF-4可见光及近红外谱段进行交叉辐射定标。结果表明,通过GF-4的DN值与MODIS和LandSat8的表观辐射亮度数据分析对比,的可见光及近红外波段的定标误差均在10%以内;而LandSat8的可见光及近红外波段的定标误差均在5%以内,比的定标精度接近官方定标系数,满足遥感定量需求。
GF-4 is the only geosynchronous orbit remote sensing satellite in the high-resolution earth observation system in China,which is applied to the fields of environmental monitoring and forest fire monitoring. The GF-4 data has very high spatial resolution,but there exists deviation in its radiation characteristics,resulting in low radiation accuracy. Therefore,the cross radiation calibration of the visible and near infrared spectrum bands of GF-4 is carried out,in which the MODIS and LandSat8 data is taken as the base image,and the Dunhuang radiation correction field as the test area,so as to improve the radiation accuracy of the GF-4 satellite data and expand the application field and scope of the data. The DN values of the GF-4 and the apparent radiation brightness data of the MODIS and LandSat8 were analyzed and compared. The results show that,the calibration errors for the visible and near infrared wavebands of the MODIS are all within 10%,the calibration errors for the visible and near infrared wavebands of the LandSat8 are all within 5%,and the calibration precision of the GF-4 is closer to the official calibration coefficient than the calibration precision of the MODIS,so the GF-4 can satisfy the quantitative demand of remote sensing.
GF-4 is the only geosynchronous orbit remote sensing satellite in the high-resolution earth observation system in China,which is applied to the fields of environmental monitoring and forest fire monitoring. The GF-4 data has very high spatial resolution,but there exists deviation in its radiation characteristics,resulting in low radiation accuracy. Therefore,the cross radiation calibration of the visible and near infrared spectrum bands of GF-4 is carried out,in which the MODIS and LandSat8 data is taken as the base image,and the Dunhuang radiation correction field as the test area,so as to improve the radiation accuracy of the GF-4 satellite data and expand the application field and scope of the data. The DN values of the GF-4 and the apparent radiation brightness data of the MODIS and LandSat8 were analyzed and compared. The results show that,the calibration errors for the visible and near infrared wavebands of the MODIS are all within 10%,the calibration errors for the visible and near infrared wavebands of the LandSat8 are all within 5%,and the calibration precision of the GF-4 is closer to the official calibration coefficient than the calibration precision of the MODIS,so the GF-4 can satisfy the quantitative demand of remote sensing.
引文
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[13]李水兵,李培现.基于Matlab的三次卷积法在数字地形数据内插中的应用[J].测绘信息与工程,2011,36(3):36-38.LI Shuibing,LI Peixian. Application of cubic convolution in-terpolation to digital map data based on Matlab[J]. Journal of geomatics,2011,36(3):36-38.
[14]孙韬,方俊永,刘学,等.基于SIFT特征匹配的全自动辐射归一化算法[J].红外与毫米波学报,2012,31(4):355-359.SUN Tao,FANG Junyong,LIU Xue,et al. Automatic rela-tive radiometric normalization method based on SIFT feature matching[J]. Journal of infrared and millimeter waves,2012,31(4):355-359.
[2]马文坡,练敏隆.“高分四号”卫星凝视相机的技术特点[J].航天返回与遥感,2016,37(4):26-31.MA Wenpo,LIAN Minlong. Technical characteristics of the staring camera on board GF-4 satellite[J]. Spacecraft recovery&remote sensing,2016,37(4):26-31.
[3]徐磊,马灵玲,胡坚,等.基于Terra/MODIS数据的HJ-1B/CCD1交叉定标方法研究[J].遥感信息,2011(2):26-31.XU Lei,MA Lingling,HU Jian,et al. Cross-calibration of HJ-1B/CCD1 against Terra/MODIS[J]. Remote sensing informa-tion,2011(2):26-31.
[4]韩杰,谢勇.GF-1卫星WFV影像间匀色方法[J].测绘学报,2016,45(12):1423-1433.HAN Jie,XIE Yong. Image dodging algorithm for GF-1 satel-lite WFV imagery[J]. Acta Geodaetica et Cartographica Sini-ca,2016,45(12):1423-1433.
[5] JIANG G M,LI Z L. Cross-calibration of MSG1-SEVIRI infra-red channels with Terra-MODIS channels[J]. International jour-nal of remote sensing,2009,30(3):753-769.
[6] DOELLING D R,MINNIS P,NGUYEN L. Calibration compar-isons between SEVIRI,MODIS and GOES data[C]//Proceed-ings of the Second MSG RAO Workshop. Salzburg:ESA,2004:17-20.
[7] TEILLET P M,BARKER J L,MARKHAM B L,et al. Radio-metric cross-calibration of the Landsat-7 ETM+and Landsat-5TM sensors based on tandem data sets[J]. Remote sensing of environment,2001,78(1):39-54.
[8] ASEM A.,DESCHAMPS P Y,HO D. Calibration of Meteosat infrared radiometer using split window channels of NOAA AVHRR[J]. Journal of atmospheric and oceanic technology,1987,4(4):553-562.
[9] VERMOTE E F, SALEOUS N Z. Calibration of NOAA16AVHRR over a desert site using MODIS data[J]. Remote sens-ing of environment,2006,105(3):214-220.
[10] LIU Ronggao,LIU Jiyuan,LIANG Shunlin,et al. Mapping China using MODIS data:methods,software and products[J]. Journal of remote sensing,2007,11(5):718-726.
[11]李小英,顾行发,闵祥军,等.利用MODIS对CBERS-02卫星CCD相机进行辐射交叉定标[J].中国科学:技术科学,2005,35(z1):41-58.LI Xiaoying,GU Xingfa,MING Xiangjun,et al. Radiation cross calibration of CBERS-02 satellite CCD camera using MODIS[J]. Scientia Sinica Technologica,2005,35(S1):41-58.
[12]杨天鹏,闫文佳,张远.GF-1WFV与Landsat-8OLI和Sentinel-2A MSI遥感图像光谱信息转换研究[J].华东师范大学学报(自然科学版),2017(6):136-146.YANG Tianpeng,YAN Wenjia,ZHANG Yuan. Conversion study on multi-spectral information of remote sensing images GF-1 WFV,Landsat-8 OLI and Sentinel-2A MSI[J]. Journal of East China Normal University(Natural science),2017(6):136-146.
[13]李水兵,李培现.基于Matlab的三次卷积法在数字地形数据内插中的应用[J].测绘信息与工程,2011,36(3):36-38.LI Shuibing,LI Peixian. Application of cubic convolution in-terpolation to digital map data based on Matlab[J]. Journal of geomatics,2011,36(3):36-38.
[14]孙韬,方俊永,刘学,等.基于SIFT特征匹配的全自动辐射归一化算法[J].红外与毫米波学报,2012,31(4):355-359.SUN Tao,FANG Junyong,LIU Xue,et al. Automatic rela-tive radiometric normalization method based on SIFT feature matching[J]. Journal of infrared and millimeter waves,2012,31(4):355-359.