基于GF-4 PMS的高时空分辨率遥感数据融合分析  

Analysis on Fusion of High Spatial and Temporal Resolution Remote Sensing Data Based on GF-4 PMS

作　　者：皮新宇 王盼成[1] 曾永年[1] 卢晗 PI Xin-yu;WANG Pan-cheng;ZENG Yong-nian;LU Han(Center for Geomatics and Regional Sustainable Development Research,Central South University,Changsha 410083;State Key Laboratory of Disaster Prevention & Reduction for Power Grid Transmission and Distribution Equipment,Center for Disaster Prevention & Reduction of State Grid Human Electric Power Company Limited,Changsha 410129,China)

机构地区：[1]中南大学空间信息技术与可持续发展研究中心,湖南长沙410083 [2]国网湖南省电力公司防灾减灾中心电网输变电设备防灾减灾国家重点实验室,湖南长沙410129

出　　处：《地理与地理信息科学》2022年第3期23-30,共8页Geography and Geo-Information Science

基　　金：国家自然科学基金项目(42171364、42171452);中南大学中央高校基本科研业务费专项(2020zzts692、2021zzts0845)。

摘　　要：探讨基于GF-4 PMS的高时空分辨率数据融合,对改善遥感数据时空融合效果、提高融合精度以及国产高分辨率卫星数据的广泛、有效应用具有重要意义。该文基于GF-4 PMS数据,利用目前广泛应用的3种时空融合模型(STARFM、ESTARFM、FSDAF),选择不同地表复杂程度的区域进行高时空分辨率GF-1 WFV、Landsat OLI数据融合实验与对比分析。结果表明:1)相对于MODIS数据,基于GF-4数据融合的高时空分辨率影像(GF-1 WFV、Landsat OLI)在空间细节、光谱特征方面更接近真实影像,融合效果与精度更好;2)基于GF-4数据的时空融合结果对不同模型的差异性不敏感,在实际应用中,应用GF-4数据的时空融合可尽量选择简洁的融合模型。研究成果可为GF-4 PMS数据的时空融合应用及像元空间尺度差异对时空融合的影响研究等提供参考。Discussing the high spatio-temporal resolution data fusion based on GF-4 PMS is of great significance for improving the accuracy of spatio-temporal fusion of remote sensing data.Therefore,we used GF-4 PMS data and applied three widely used spatio-temporal fusion models(STARFM,ESTARFM,FSDAF)to fuse the high spatio-temporal resolution GF-1 WFV,Landsat OLI data in two areas of different surface complexity,and compared and analyzed their fusion results.The experimental results show that:1)Compared with image fusion based on MODIS image data,the fused high spatio-temporal resolution images(GF-1 WFV,Landsat OLI)based on GF-4 image data are closer to real images in terms of spatial details and spectral characteristics,and have better fusion effects and accuracy.2)Spatio-temporal fusion results based on GF-4 image data are not sensitive to different models.Therefore,in practical applications,we can choose a concise fusion model for the spatio-temporal fusion based on GF-4 image data.The results of this study will provide a reference for the application of spatio-temporal fusion of GF-4 PMS data and the impact of pixel spatial scale differences on spatio-temporal fusion.

关 键 词：高时空分辨率 时空融合 尺度效应 GF-4 PMS GF-1 WFV 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]