高分一号卫星中国科学院怀来遥感综合试验站及周边地表反照率产品影像

封面为基于高分一号卫星2022年9月23日拍摄的8m空间分辨率多光谱数据定量反演的地表反照率产品影像，展现了河北怀来遥感综合试验站及周边水体，湿地，农田，林地，道路，城镇等多种典型地物表面反照率特征。反照率表征了地表对太阳入射的反射能力，图中蓝绿色到黄红色的渐变刻画了水体—湿地—植被—裸地人工建筑等由低到高的反照率空间分布特征。怀来遥感综合试验站及周边建有国际先讲的全谱段多角度辐散射特性观测平台和多尺度关键参量组网观测系统。2021年—2022年，在此处开展了高分遥感星机地综合试验，怀来遥感综合试验站已成为高分共性产品算法研发和产品真实性检验重要基地。本期专刊的 23 篇论文展现了高分遥感共性产品技术体系、产品生成与真实性检验关键技术和应用实践等方面最新进展。

The land surface albedo map around the Huailai Remote Sensing Test Site derived from GF-1 satellite

The land surface albedo map is retrieved from the 8 m-spatial-resolution multi-spectral image acquired by GF-1 satellite on September 23 2022, covering the typical landscapes albedo features of water, wetland, croplands, forest, roads and towns. Describing the land surface reflectance ability to the solar illumination, the land covers' albedo varies from low to high as water-wetlands-vegetated covers- bared soil-artificial structures,with color changing from bule-green to yellow-red in the image. The Huailai Remote Sensing Test Site has built the internationally advanced full-spectral-covered and multi-angular radiation observation platforms and the multi-scale key parameters observation networks. The satellite-airborne-ground comprehensive experiments for GF satellites have been implemented here from the year 2021 to 2022. This site will continuously support the GF common products algorithms' developments and the products' validations. The 23 papers of the special issue show the latest progress in the technique system of remote sensing common products by GF satellites, key technologies of common product generation and validation, and application practices.