http://www2.csr.utexas.edu/grace/RL06_mascons.html 喷气动力实验室 (JPL Mascon) https://grace.jpl.nasa.gov/data/get-data/jpl_global_mascons/(介绍) https://podaac.jpl.nasa.gov/GRACE(下载) 11.吉林一号 吉林一号网 https://www.jl1mall.com/ 12. Radarsat (加拿大) Canadian Space Agency ...