环境二号卫星恒河三角洲影像

封面图片为环境二号卫星于 2022 年 11 月1日获取的孟加拉国恒河三角洲水陆交接区域影像，展示了该区域丰富的地物类型（中国科学院空天信息创新研究院陈甫供图）。环境二号A/B星装有16 m 分辨率5波段 800 km 宽幅相机.， 相对干常用的 4波段多光谱多了红边波段（B5），更有利于提取植被和水体。该宽幅相机数据是面向公众公开发布的，数据覆盖全球，获取网址∶https∶//data.cresda.cn/。

HJ-2 satellite image of Ganges Delta

The cover image is the Ganges Delta water land junction area in Bangladesh obtained by HJ-2 satellite on November 1, 2022, showing the rich surface feature types in this area(Courtesy of Prof. Fu Chen's research group from Aerospace Information Research Institute, Chinese Academy of Sciences). HJ-2 A/B satellites are equipped with a 5-band 800 km wide camera with a 16 m resolution (WFV). Compared with the commonly used 4-band multispectral camera, it has red edge band (B5), which is more conducive to extracting vegetation and water. The WFV data is publicly released to the public and covers the world. To obtain the free satellite data, visit: https://data.cresda.cn/.