气象卫星技术
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成功发射!风云四号C星有哪些硬核实力
Xin Lang Cai Jing· 2025-12-27 18:41
Core Viewpoint - The successful launch of the Fengyun-4C satellite marks a significant advancement in China's meteorological observation capabilities, enhancing the country's ability to predict severe weather and monitor space weather [1][2][3] Group 1: Satellite Specifications and Capabilities - Fengyun-4C satellite's technical indicators are improved by 2 to 3 times compared to Fengyun-4B, making it the strongest geostationary meteorological satellite globally in terms of comprehensive observation capabilities [1] - The satellite is equipped with four different ground remote sensing instruments and two solar observation instruments, enabling multi-channel two-dimensional imaging, three-dimensional atmospheric detection, high-frequency lightning detection, ionospheric imaging, and solar imaging [1][2] - The satellite's geostationary radiation imaging instrument can now distinguish atmospheric temperature changes of 1/50 degrees Celsius from 10,000 kilometers away, with a full disk imaging time reduced from 15 minutes to 5 minutes [2] Group 2: Technological Innovations - The satellite features a new electric propulsion high-performance remote sensing platform, which allows for high-precision in-orbit autonomous maintenance and angular momentum unloading, achieving a precision improvement of over 10 times [1] - The interferometric infrared detector has improved spatial resolution from 12 kilometers to 8 kilometers, capable of completing temperature and humidity detection in China within one hour [2] - The lightning imaging instrument can capture 500 frames per second, capable of identifying lightning events from a data stream of 30 Gbps, equivalent to reviewing 30 HD movies in one second [2] Group 3: Impact on Meteorological Services - Fengyun-4C will work in conjunction with previous satellites to form a more efficient collaborative observation network, significantly enhancing China's capabilities in weather forecasting, disaster prevention, and ecological monitoring [2][3] - The satellite's inter-satellite collaborative observation capability aims to create a "data highway" in space, advancing the international meteorological observation system towards a model of "discovery and observation, observation and service" [3]
可在万里之外分辨出大气五十分之一摄氏度的变化——风云四号03星本领高强
Xin Hua She· 2025-12-27 10:54
新华社上海12月27日电(记者张建松、丁汀)12月27日0时07分,我国在西昌卫星发射中心使用长征三 号乙运载火箭,成功将风云四号03星发射升空,卫星顺利进入预定轨道,发射任务获得圆满成功。 风云四号03星发射升空。新华社发(张鹤缤 摄) 风云四号03星由中国航天科技集团有限公司第八研究院抓总研制,是风云四号系列第3颗卫星,主要用 于台风、暴雨等短临天气预报和空间天气预报。入轨后,将与前序卫星共同形成更加高效协同的观测网 络。 据中国航天科技集团八院杨炳轲介绍,静止轨道气象卫星作为气象防灾减灾第一道防线的前哨站,是全 球公认的复杂、先进的航天系统。此次发射的风云四号卫星03星,采用全新电推型高性能遥感卫星平 台,装载4台不同体制的对地遥感仪器和2台对日观测仪器,兼具多通道二维成像、大气三维立体探测、 高帧频闪电探测、电离层成像、太阳成像与流量探测的综合探测能力及星间组网能力,同时支持星间协 同、星地高速数传和数据转发广播功能,具有观测系统高稳定、遥感产品高精度、接收处理分发高时效 等特点。 12月27日0时07分,我国在西昌卫星发射中心使用长征三号乙运载火箭,成功将风云四号03星发射升 空,卫星顺利进入预定轨 ...