气象卫星家族添了“葫芦娃”

Core Viewpoint - The successful launch of the Fengyun-4C satellite enhances China's meteorological satellite capabilities, adding a highly advanced member to the existing fleet of over 20 Fengyun satellites [3]. Group 1: Satellite Capabilities - Fengyun-4C is equipped with four different ground remote sensing instruments and two solar observation instruments, showcasing comprehensive observation capabilities including multi-channel 2D imaging, 3D atmospheric detection, high-frequency lightning detection, ionosphere imaging, and solar imaging [5]. - The satellite's advanced geostationary radiation imager can now achieve full-disk imaging in 5 minutes, down from 15 minutes, and can detect temperature changes in the atmosphere to within one-fiftieth of a degree Celsius [5]. - The interferometric infrared detector has improved spatial resolution from 12 kilometers to 8 kilometers, allowing for temperature and humidity detection across China within one hour [5]. Group 2: Technological Innovations - Fengyun-4C introduces several innovative technologies that fill domestic and international gaps, including a multi-band ultraviolet ionospheric imager that achieves high-spectral ionospheric detection in the extreme ultraviolet band for the first time in China [6]. - The lightning imager can capture 500 frames per second and has the capability to identify lightning events from a data stream of 30 Gbps, equivalent to playing 30 HD movies in one second while pinpointing lightning signals [6]. - The design of the satellite's "vector adjustment mechanism + small thrust Hall thruster" enhances its maneuverability, allowing it to operate within a significantly reduced spatial area, improving precision by over ten times [6].