基于场地高光谱BRDF模型的绝对辐射定标方法

HFCAS OpenIR

	基于场地高光谱BRDF模型的绝对辐射定标方法
其他题名	Absolute Radiometric Calibration Method Based on Surface Hyperspectral BRDF Model
	赵春艳 1; 张艳娜1 ; 韦玮1 ; 张孟 1; 陈林 2; 张璐 2; 李新1 ; 郑小兵1
	2019
发表期刊	光子学报
ISSN	1004-4213
摘要	提出了一种基于场地地表高光谱双向反射分布函数模型的绝对辐射定标方法,摆脱了对卫星过境时刻同步观测的依赖,提高了遥感器在轨绝对辐射定标的效率与频次.利用无人机测量系统对敦煌辐射校正场进行了地表方向特性测量,基于半经验核驱动模型反演了敦煌场地的高光谱双向反射分布函数模型参数.用地表双向反射分布函数模型直接计算的卫星观测方向的地表高光谱反射率数据替代卫星过境时刻场地的地表同步测量数据,结合中分辨率成像光谱仪大气产品数据,实现了对Landsat-8卫星的陆地成像仪(OLI)在可见光至近红外波段的高频次绝对辐射定标.Landsat-8/OLI第1~6波段的卫星观测表观辐亮度值与模型计算表观辐亮度值的相对偏差均小于5%,标准差小于2%.基于无人机场地双向反射分布函数模型的绝对辐射定标方法的定标结果与卫星观测结果具有较高的一致性和稳定性.
其他摘要	An absolute radiometric calibration method based on the surface hyperspectral Bidirectional Reflectance Distribution Function(BRDF)model is proposed,which the efficiency and frequency of on-orbit absolute radiometric calibration of remote sensors are improved by getting rid of the dependence on synchronous observation of satellite overpass time.In-flight high-frequency absolute radiometric calibration verification and application was carried out with Operational Land Imager(OLI)on Landsat-8 using this method.The surface directional reflectance of the Dunhuang test site was measured by the Unmanned Aerial Vehicle(UAV)measurement system,and the hyperspectral BRDF model parameters of the Dunhuang site were inversed based on the semi-empirical kernel-driven model.Comparing the model calculated data with the measured data,the present model is proven to provide a better fit to measured data.The surface hyperspectral reflectance data of satellite observation direction calculated directly by surface BRDF model is used to replace the synchronous measurement data of satellite transit time.The high-frequency absolute radiometric calibration of Landsat-8 OLI is realized by using the reflectance basis method combined with MODIS official atmospheric data products.The relative deviation between the Landsat-8/OLI observed apparent radiance and the model calculated apparent radiance is less than 5%and the standard deviation is less than 2%in the first band to the sixth band.The result shows that the absolute radiometric calibration method based on the UAV BRDF model are in high consistency and stability with the satellite observations.
关键词	辐射定标无人机双向反射分布函数模型 Landsat-8陆地成像仪表观辐亮度
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:6505629
引用统计
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/49837
专题	中国科学院合肥物质科学研究院
作者单位	1.中国科学院安徽光学精密机械研究所 2.中国科学院安徽光学精密机械研究所 3.中国科学院安徽光学精密机械研究所 4.中国科学院安徽光学精密机械研究所 5.中国气象局国家卫星气象中心 6.中国气象局国家卫星气象中心 7.中国科学院安徽光学精密机械研究所 8.中国科学院安徽光学精密机械研究所
推荐引用方式 GB/T 7714	赵春艳,张艳娜,韦玮,等. 基于场地高光谱BRDF模型的绝对辐射定标方法[J]. 光子学报,2019,048.
APA	赵春艳.,张艳娜.,韦玮.,张孟.,陈林.,...&郑小兵.(2019).基于场地高光谱BRDF模型的绝对辐射定标方法.光子学报,048.
MLA	赵春艳,et al."基于场地高光谱BRDF模型的绝对辐射定标方法".光子学报 048(2019).