顾及多积分时间特性的GF-4卫星PMS传感器交叉辐射定标

doi:10.11947/j.AGCS.2020.20200057

测绘学报 ›› 2020, Vol. 49 ›› Issue (10): 1311-1320.doi: 10.11947/j.AGCS.2020.20200057

顾及多积分时间特性的GF-4卫星PMS传感器交叉辐射定标

韩杰¹, 陶醉², 谢勇³, 刘其悦², 石宏斌¹

1. 许昌学院城市与环境学院, 河南许昌 461000;
2. 中国科学院空天信息创新研究院, 北京 100101;
3. 南京信息工程大学地理与遥感学院, 江苏南京 210044

收稿日期:2020-02-19 修回日期:2020-03-27 发布日期:2020-10-31
通讯作者: 陶醉 E-mail:taozui@radi.ac.cn
作者简介:韩杰(1987-),男,博士,讲师,研究方向为高分辨率卫星传感器定标和真实性检验。E-mail:hanjie@radi.ac.cn
基金资助:
河南省科技攻关项目（202102310015；182102310924）；国家自然科学基金（41671345）；广西创新驱动发展专项（科技重大专项）（桂科AA18118038）；国家民用空间基础设施项目（陆地观测卫星共性应用支撑平台）

Radiometric cross-calibration of GF-4 satellite PMS sensor considering the characteristics of multiple integration times

HAN Jie¹, TAO Zui², XIE Yong³, LIU Qiyue², SHI Hongbin¹

1. School of Urban and Environment Sciences, Xuchang University, Xuchang 461000, China;
2. Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China;
3. School of Geography and Remote Sensing, Nanjing University of Information Science & Technology, Nanjing 210044, China

Received:2020-02-19 Revised:2020-03-27 Published:2020-10-31
Supported by:
The Science and Technology of Henan Province (Nos. 202102310015;182102310924);The National Natural Science Foundation of China (No. 41671345);The Guangxi Innovative Development Grand Grant (No. GuikeAA18118038);The Land Observation Satellite Supporting Platform of National Civil Space Infrastructure Project

摘要/Abstract

摘要： 针对GF-4卫星PMS传感器具备5个积分时间的成像特性，提出一种基于辐射区域网平差的交叉辐射定标方法。首先，利用敦煌辐射校正场地区时间序列有效MODIS影像集，构建该区域高精度BRDF模型。其次，考虑BRDF和SBAF校正，从该地区Landsat-8卫星OLI影像和PMS影像中提取辐射控制点。然后，设置DN值和CV限制条件，在凝视成像状态下从不同积分时间PMS影像中提取辐射连接点。最后，利用新建定标模型计算各积分时间状态下的定标系数。验证结果表明，不同积分时间的各波段平均绝对定标精度均优于5.18%，且不同积分时间影像间各波段辐射差异最高降低36.64%。同时，探讨了辐射控制点分布、BRDF、SBAF和辐射连接点筛选条件对定标结果的影响，为进一步优化PMS传感器交叉辐射定标流程提供重要参考。

关键词: GF-4, 多积分时间, 辐射区域网平差, BRDF, SBAF

Abstract: Integrating the five integration times characteristics of GF-4 satellite PMS sensor,a radiometric cross-calibration method based on the radiometric block adjustment is proposed. Taking Dunhuang radiometric calibration sites (DRCS) in China as the radiometric transfer platform. Firstly, collecting the valid time-series MODIS images over DRCS to build the BRDF model. Secondly, considering the SBAF and BRDF, the radiometric control points (RCPs) are extracted from the image pairs of Landsat-8 OLI and PMS over DRCS. Thirdly, after setting the restrictive conditions of DN and CV, the radiometric tie points (RTPs) are extracted from PMS images in different integration times under the stare imaging condition. Finally, the radiometric cross-calibration coefficients of five integration times are solved based on the proposed method. The validation results show that the average absolute calibration relative errors of five integration times are all less than 5.18% and the relative radiometric correction errors of five integration times reduce up to 36.64%. Meanwhile, the influences of the RCPs distribution, the restrictive conditions in the process of RTPs extraction, SBAF and BRDF on the calibration results are discussed, which is beneficial to further optimize the radiometric cross-calibration program of PMS.

Key words: GF-4, multiple integration times, radiometric block adjustment, BRDF, SBAF

中图分类号:

P237

韩杰, 陶醉, 谢勇, 刘其悦, 石宏斌. 顾及多积分时间特性的GF-4卫星PMS传感器交叉辐射定标[J]. 测绘学报, 2020, 49(10): 1311-1320.

HAN Jie, TAO Zui, XIE Yong, LIU Qiyue, SHI Hongbin. Radiometric cross-calibration of GF-4 satellite PMS sensor considering the characteristics of multiple integration times[J]. Acta Geodaetica et Cartographica Sinica, 2020, 49(10): 1311-1320.

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顾及多积分时间特性的GF-4卫星PMS传感器交叉辐射定标

Radiometric cross-calibration of GF-4 satellite PMS sensor considering the characteristics of multiple integration times

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[1]	李娟, 冯炼, 庞小平. 针对GF-1遥感影像的基于影像与基于辐射传输模型的两种交叉定标方法比较[J]. 测绘学报, 2017, 46(7): 882-890.
[2]	韩杰, 谢勇. 星载多相机拼接成像传感器在轨辐射定标方法[J]. 测绘学报, 2017, 46(11): 1830-1840.
[3]	王强,过志峰,孙国清,罗传文,刘丹丹. 离散植被冠层的解析混合BRDF模型——MGeoSAIL[J]. 测绘学报, 2010, 39(2): 0-145.