高分一号卫星PMS 相机多场地宽动态辐射定标

韩启金; 张学文; 乔志远; 杨磊; 潘志强; 刘李

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高分一号卫星PMS 相机多场地宽动态辐射定标

韩启金, 张学文, 乔志远, 杨磊, 潘志强, 刘李

文章导航 > 红外与激光工程 > 2015 > 44(1): 127-133

韩启金, 张学文, 乔志远, 杨磊, 潘志强, 刘李. 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.

引用本文:

韩启金, 张学文, 乔志远, 杨磊, 潘志强, 刘李. 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, Yang Lei, Pan Zhiqiang, Liu Li. Wide dynamic radiometric calibration of GF-1 PMS sensors using multi-test sites[J]. Infrared and Laser Engineering, 2015, 44(1): 127-133.

Citation:

Han Qijin, Zhang Xuewen, Qiao Zhiyuan, Yang Lei, Pan Zhiqiang, Liu Li. Wide dynamic radiometric calibration of GF-1 PMS sensors using multi-test sites[J]. Infrared and Laser Engineering, 2015, 44(1): 127-133.

高分一号卫星PMS 相机多场地宽动态辐射定标

1.
中国资源卫星应用中心,北京100094

基金项目:

国家863 计划重点项目(2012AA12A302)

详细信息

作者简介:
韩启金(1983-),男,工程师,硕士,主要从事卫星性能检测与遥感应用方面的研究。Email:cresda_hanjin@126.com

中图分类号: TP722.4;TP721.1;TP731

Wide dynamic radiometric calibration of GF-1 PMS sensors using multi-test sites

1.
China Center for Resources Satellite Data and Application,Beijing 100094,China

摘要: 为克服卫星遥感器常规定标方法不足,实现GF-1 卫星PMS 相机高精度在轨定标,提出了多场地宽动态辐射定标方法,分析了新方法的不确定度。首先,介绍宽动态辐射定标原理和试验场区概况,设计开展了GF-1 卫星多场地同步观测试验;接着,基于试验数据和宽动态定标模型,实现了GF-1 卫星PMS 相机的在轨辐射定标;最后,讨论GF-1 卫星PMS 相机多场地定标的不确定度和模型的稳定性。结果表明:GF-1 卫星PMS 相机自发射以来辐射响应特性与实验室定标结果相比发生了一定变化,最大变化量达到了7.72%;PMS 相机多场地辐射定标的综合不确定度为5.35%。所获取的PMS 相机定标系数满足遥感辐亮度产品生产的精度要求,且多场地定标可作为后续高分卫星的在轨定标的方法参考。
- 高分一号卫星 /
- PMS 相机 /
- 试验场 /
- 辐射定标 /
- 不确定度
Abstract: In order to overcome the limitations of conventional calibration method and realize high precision in-flight radiometric calibration of GF-1 PMS sensors, a new wide dynamic radiometric calibration method using multi-test sites was presented, and the uncertainty of this method was analyzed. Firstly, the wide dynamic radiometric calibration theory was introduced and the characteristics of test sites was described. Besides, the GF-1 satellite to field synchronous observing campaign with multi test sites was designed. Secondly, based on measured data and wide dynamic calibration model, the calibration of PMS sensors was finished. Finally, the uncertainty and feasibility of this calibration algorithmic were discussed. The radiometric properties of GF-1 PMS sensors have changed comparing with the prelaunch laboratory calibrated results, and the biggest change is close to 7.72%. And the uncertainty of wide dynamic radiometric calibration of PMS sensors based on multi-test sites is 5.35%. The obtained precision of calibration coefficients meets the requirements of remote sensing radiance's retrieval, and the method provides a reference for further calibration of high resolution satellite.
- GF-1 satellite /
- PMS sensor /
- test site /
- radiometric calibration /
- uncertainty

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高分一号卫星PMS 相机多场地宽动态辐射定标

1. 中国资源卫星应用中心,北京100094

作者简介:
韩启金(1983-),男,工程师,硕士,主要从事卫星性能检测与遥感应用方面的研究。Email:cresda_hanjin@126.com

收稿日期: 2014-05-14
修回日期: 2014-06-03
刊出日期: 2015-01-25

基金项目:

国家863 计划重点项目(2012AA12A302)

中图分类号: TP722.4;TP721.1;TP731

关键词:

摘要: 为克服卫星遥感器常规定标方法不足,实现GF-1 卫星PMS 相机高精度在轨定标,提出了多场地宽动态辐射定标方法,分析了新方法的不确定度。首先,介绍宽动态辐射定标原理和试验场区概况,设计开展了GF-1 卫星多场地同步观测试验;接着,基于试验数据和宽动态定标模型,实现了GF-1 卫星PMS 相机的在轨辐射定标;最后,讨论GF-1 卫星PMS 相机多场地定标的不确定度和模型的稳定性。结果表明:GF-1 卫星PMS 相机自发射以来辐射响应特性与实验室定标结果相比发生了一定变化,最大变化量达到了7.72%;PMS 相机多场地辐射定标的综合不确定度为5.35%。所获取的PMS 相机定标系数满足遥感辐亮度产品生产的精度要求,且多场地定标可作为后续高分卫星的在轨定标的方法参考。

English Abstract

Wide dynamic radiometric calibration of GF-1 PMS sensors using multi-test sites

1. China Center for Resources Satellite Data and Application,Beijing 100094,China

Received Date: 2014-05-14
Rev Recd Date: 2014-06-03
Publish Date: 2015-01-25

Keywords:

Abstract: In order to overcome the limitations of conventional calibration method and realize high precision in-flight radiometric calibration of GF-1 PMS sensors, a new wide dynamic radiometric calibration method using multi-test sites was presented, and the uncertainty of this method was analyzed. Firstly, the wide dynamic radiometric calibration theory was introduced and the characteristics of test sites was described. Besides, the GF-1 satellite to field synchronous observing campaign with multi test sites was designed. Secondly, based on measured data and wide dynamic calibration model, the calibration of PMS sensors was finished. Finally, the uncertainty and feasibility of this calibration algorithmic were discussed. The radiometric properties of GF-1 PMS sensors have changed comparing with the prelaunch laboratory calibrated results, and the biggest change is close to 7.72%. And the uncertainty of wide dynamic radiometric calibration of PMS sensors based on multi-test sites is 5.35%. The obtained precision of calibration coefficients meets the requirements of remote sensing radiance's retrieval, and the method provides a reference for further calibration of high resolution satellite.