基于东南亚区域的GF-1地表反射率辐射归一化验证

doi:10.13474/j.cnki.11-2246.2026.0610

测绘通报 ›› 2026, Vol. 0 ›› Issue (6): 61-66,73.doi: 10.13474/j.cnki.11-2246.2026.0610

• 学术研究 • 上一篇

基于东南亚区域的GF-1地表反射率辐射归一化验证

徐梦夏¹, 杨子煜¹, 马建光¹, 张嘉璐², 张舒宁², 张文娟²

1. 军事科学院系统工程研究院, 北京 100080;
2. 中国科学院空天信息创新研究院, 北京 100094

收稿日期:2025-09-30 发布日期:2026-07-09
通讯作者: 张舒宁。E-mail:zhangshuning21@mails.ucas.ac.cn
作者简介:徐梦夏(1988—),女,硕士,助理研究员,主要研究方向为天基光学特性处理。E-mail:caifeng＿zgy@sina.com
基金资助:
高分辨率对地观测系统重大专项(30-Y60B01-9003-22/23);地球深部探测与矿产资源勘察国家科技重大专项(2024ZD1002100)

Validation of radiometric normalization for GF-1 surface reflectance in the Southeast Asian region

XU Mengxia¹, YANG Ziyu¹, MA Jianguang¹, ZHANG Jialu², ZHANG Shuning², ZHANG Wenjuan²

1. Institute of Systems Engineering, Academy of Military Sciences, Beijing 100080, China;
2. Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China

Received:2025-09-30 Published:2026-07-09

摘要/Abstract

摘要： [目的] GF-1自2013年发射以来,被广泛应用于农业、林业、城市环境、土地利用变化监测等领域,作为其基础定量产品的地表反射率一直备受关注。为了进一步加强GF-1产品的应用推广,本文对境外区域产品的精度展开了验证。[方法]利用基于大气查找表的ACFrC软件,对泰国、孟加拉国和老挝的GF-1 PMS、WFV两个传感器的图像进行大气校正,采用准确度(A)、精度(P)和不确定度(U)等指标评估GF-1地表反射率产品与Landsat 8/9 OLI的交叉验证精度。[结果]结果表明,3个地区A、P、U指标最小为6.79×10^-5,最大为7.82×10^-2,均小于按照0.015+0.15R(R为地表反射率)的误差约束期望(分别为1.90×10^-2、8.10×10^-2),符合精度要求。因此,ACFrC生产的地表反射率产品与Landsat 8/9数据之间具有较高的一致性,且GF-1 PMS在孟加拉国和老挝的蓝波段与Landsat 8/9的地表反射率交叉验证的准确度接近0,显示两者的高度一致性。[结论]基于ACFrC系统生产的GF-1 PMS与WFV地表反射率产品,为该类数据的业务化应用提供了初步验证,也为全球中高分辨率卫星数据的定量应用研究提供了参考。

关键词: ACFrC, 地表反射率, 交叉验证, GF-1, Landsat 8/9

Abstract: [Purposes]Since its launch in 2013,GF-1 has been widely applied in fields such as agriculture,forestry,urban environment,and land use change monitoring.As fundamental quantitative product,surface reflectance has long been a focus of attention.To further strengthen the application and promotion of the GF-1 products,this paper carries out extensive verification of the accuracy of the products in overseas regions.[Methods]Using the ACFrC software based on atmospheric lookup tables to perform atmospheric correction on images from GF-1 PMS and WFV sensors in Southeast Asian countries including Thailand,Bangladesh,and Laos.Indicators such as accuracy (A),precision (P) and uncertainty (U) are adopted to evaluate the cross-validation accuracy between GF-1 surface reflectance products and Landsat 8/9 OLI data.[Findings]The results show that for the three regionsthe minimum value of the A,P and U indicators is 6.79×10^-5,and the maximum is 7.82×10^-2,both of which are lower than the error constraint expectation of 0.015+0.15R (R is the surface reflectance),which are 1.90×10^-2 and 8.10×10^-2 respectively.Thus,the products meet the accuracy requirements.So there is a high degree of consistency between the surface reflectance products generated by the ACFrC and Landsat 8/9 data,and the accuracy (A) of cross-validation between the blue band of GF-1 PMS and Landsat 8/9 surface reflectance in Bangladesh and Laos is close to 0,indicating a high level of consistency between the two.[Conclusions]The GF-1 PMS and WFV surface reflectance products generated by the ACFrC system provide preliminary validation for the operational application of such data and offer references for the quantitative application research of global medium-to-high resolution satellite data.

Key words: ACFrC, surface reflectance, cross-validation, GF-1, Landsat 8/9

中图分类号:

P237

徐梦夏, 杨子煜, 马建光, 张嘉璐, 张舒宁, 张文娟. 基于东南亚区域的GF-1地表反射率辐射归一化验证[J]. 测绘通报, 2026, 0(6): 61-66,73.

XU Mengxia, YANG Ziyu, MA Jianguang, ZHANG Jialu, ZHANG Shuning, ZHANG Wenjuan. Validation of radiometric normalization for GF-1 surface reflectance in the Southeast Asian region[J]. Bulletin of Surveying and Mapping, 2026, 0(6): 61-66,73.

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基于东南亚区域的GF-1地表反射率辐射归一化验证

Validation of radiometric normalization for GF-1 surface reflectance in the Southeast Asian region

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