Group 1 - The article discusses the establishment of China's marine satellite observation system, which is referred to as the "marine perception network" [3][4] - The marine monitoring satellites currently in orbit include three satellites: GaoFen series, 1-meter C-SAR satellites 01 and 02, which provide all-weather, high-resolution microwave observation capabilities [3][4] - The marine monitoring satellites are expected to achieve high and low orbit satellite networking observation by 2030 [4] Group 2 - The marine color satellites, including Haiyang-1C, Haiyang-1D, and Haiyang-1E, are capable of accurately obtaining ecological parameters such as chlorophyll concentration and suspended sediment through the reflection spectrum of seawater [4][5] - Future launches will include Haiyang-1F and high-orbit marine and coastal environment monitoring satellites to enhance marine ecological and coastal observation capabilities [5] - The marine dynamic satellites can measure various ocean dynamic environmental parameters, with five satellites currently in orbit, including Haiyang-2B and others [5]