基于GF-1/WFV与MODIS和LandSat8相机交叉定标
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摘要
"高分一号"(GF-1)卫星是中国高分辨率对地观测系统的第一颗卫星,应用于地理测绘、海洋和气候气象观测等重要领域。文中利用辐射精度较高的MODIS线性回归得到GF-1卫星的增益与偏移,并与官方辐射定标系数相比较,GF-1与MODIS交叉辐射定标误差为2.99%,1.84%,2.22%,2.97%;与LandSat8交叉辐射定标误差是2.15%,1.45%,0.39%,1.48%。结果表明,该方法获得的定标系数误差都在3%以内,且比与LandSat8卫星交叉定标获得的定标系数误差更小,满足基本的遥感定量需求。
The GF-1 satellite is the first satellite in China′s high-resolution Earth observation system,which is applied to geographic mapping,ocean observation,climate meteorological observation,and other important fields. In this paper,the MODIS and LandSat8 satellite images with high radiation accuracy are used to conduct cross-calibration for the multi-spectral camera with 16 m wide-coverage of the GF-1 satellite. The gain and offset of the GF-1 satellite are obtained by means of linear regression. In comparison with the official radiation calibration coefficients,the cross-radiation calibration errors of GF-1 and MODIS are 2.99%,1.84%,2.22%,and 2.97%;and the cross-radiation calibration errors of GF-1 and LandSat8 are 2.15%,1.45%,0.39%,and 1.48%. The results show that the calibration coefficient errors obtained by the method are all within 3%,which is smaller than the calibration coefficient errors obtained by cross-calibration with LandSat8 satellite,and can satisfy the basic remote sensing calibration requirement.
The GF-1 satellite is the first satellite in China′s high-resolution Earth observation system,which is applied to geographic mapping,ocean observation,climate meteorological observation,and other important fields. In this paper,the MODIS and LandSat8 satellite images with high radiation accuracy are used to conduct cross-calibration for the multi-spectral camera with 16 m wide-coverage of the GF-1 satellite. The gain and offset of the GF-1 satellite are obtained by means of linear regression. In comparison with the official radiation calibration coefficients,the cross-radiation calibration errors of GF-1 and MODIS are 2.99%,1.84%,2.22%,and 2.97%;and the cross-radiation calibration errors of GF-1 and LandSat8 are 2.15%,1.45%,0.39%,and 1.48%. The results show that the calibration coefficient errors obtained by the method are all within 3%,which is smaller than the calibration coefficient errors obtained by cross-calibration with LandSat8 satellite,and can satisfy the basic remote sensing calibration requirement.
引文
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[15]陈平.遥感影像地类特征提取的空间尺度效应研究[D].成都:成都理工大学,2016.CHEN Ping. Spatial scale effect for ground feature extraction of remote sensing images[D]. Chengdu:Chengdu University of Technology,2016.
[16]杜春鹏,李景山.一种结合拓扑信息和SIFT特征的多源遥感影像自动匹配方法[J].测绘通报,2017(10):115-119.DU Chunpeng,LI Jingshan. A multi-sensor remote sensing image automatic matching method based on topological infor-mation and SIFT features[J]. Bulletin of surveying and map-ping,2017(10):115-119.
[2]白照广.“高分一号”卫星的技术特点[J].中国航天,2013(8):5-9.BAI Zhaoguang. Technical characteristics of GF-1 satellite[J].Aerospace China,2013(8):5-9.
[3]东方红.“高分一号”在轨运行四周年[J].卫星应用,2017(5):69.Dong Fanghong. GF-1 in-orbit operation for four years[J]. Satel-lite application,2017(5):69.
[4]韩启金,傅俏燕,潘志强,等.“资源三号”卫星靶标法绝对辐射定标与验证分析[J].红外与激光工程,2013,42(z1):167-173.HAN Qijin,FU Qiaoyan,PAN Zhiqiang,et al. Absolute radio-metric calibration and validation analysis of ZY-3 using artifi-cial targets[J]. Infrared and laser engineering,2013,42(S1):167-173.
[5]张学文,傅俏燕,韩启金,等.“资源三号”多光谱传感器场地辐射定标与验证[J].光谱学与光谱分析,2014,34(9):2476-2480.ZHANG Xuewen,FU Qiaoyan,HAN Qijin,et al. The field ra-diometric calibration and validation of ZY-3 multispectral sen-sor[J]. Spectroscopy and spectral analysis,2014,34(9):2476-2480.
[6] XIONG X,SUN J,BARNES W,et al. Multiyear on-orbit cali-bration and performance of terra MODIS reflective solar bands[J]. IEEE transactions on geoscience and remote sensing,2007,45(4):879-889.
[7] YANG Aixia,ZHONG Bo,LüWenbo,et al. Cross calibration of GF-1/WFV over a desert site using Landsat-8/OLI imagery and ZY-3/TLC data[J]. Remote sensing,2015,7(8):10763-10787.
[8]傅俏燕,闵祥军,李杏朝,等.敦煌场地CBERS-02 CCD传感器在轨绝对辐射定标研究[J].遥感学报,2006,10(4):433-439.FU Qiaoyan,MIN Xiangjun,LI Xingchao,et al. In-flight abso-lute calibration of the CBERS-02 CCD sensor at the Dunhuang test site[J]. Journal of remote sensing,2006,10(4):433-439.
[9]韩启金,张学文,乔志远,等.“高分一号”卫星PMS相机多场地宽动态辐射定标[J].红外与激光工程,2015,44(1):127-133.HAN Qijin,ZHANG Xuewen,QIAO Zhiyuan,et al. Wide dy-namic radiometric calibration of GF-1 PMS sensors using multi-test sites[J]. Infrared and laser engineering,2015,44(1):127-133.
[10]张艳秋.资源三号卫星多光谱相机交叉定标研究[D].西安:长安大学,2014.ZHANG Yanqiu. Research on multispectral camera cross-cali-bration of ZY-3 satellite[D]. Xi’an:Chang’an University,2014.
[11]吕佳彦,何明元,陈林,等.基于敦煌辐射校正场的自动化辐射定标方法[J].光学学报,2017,37(8):18-25.LüJiayan,HE Mingyuan,CHEN Lin,et al. Automated radi-ation calibration method based on Dunhuang radiometric cali-bration site[J]. Acta Optica Sinica,2017,37(8):18-25.
[12]周珂,刘李,余涛,等.光谱匹配因子对GF-1/WFV时间序列交叉定标的影响分析[J].光谱学与光谱分析,2017,37(12):3809-3813.ZHOU Ke,LIU Li,YU Tao,et al. Sensitivity analysis of spectral band adjustment factors for GF-1/WFV sensor cross-calibration[J]. Spectroscopy and spectral analysis,2017,37(12):3809-3813.
[13] CHEN Y,SUN K,LI D,et al. Radiometric cross-calibration of GF-4 PMS sensor based on assimilation of Landsat-8 OLI images[J]. Remote sensing,2017,9(8):811.
[14]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.
[15]陈平.遥感影像地类特征提取的空间尺度效应研究[D].成都:成都理工大学,2016.CHEN Ping. Spatial scale effect for ground feature extraction of remote sensing images[D]. Chengdu:Chengdu University of Technology,2016.
[16]杜春鹏,李景山.一种结合拓扑信息和SIFT特征的多源遥感影像自动匹配方法[J].测绘通报,2017(10):115-119.DU Chunpeng,LI Jingshan. A multi-sensor remote sensing image automatic matching method based on topological infor-mation and SIFT features[J]. Bulletin of surveying and map-ping,2017(10):115-119.