2016年12月11日,我国第二代静止轨道气象卫星的首发星风云-4由长征-3B运载火箭发射升空。它采用三轴稳定控制,接替采用自旋稳定的风云-2,其连续性、稳定性可大幅度提高我国静止气象卫星探测水平。卫星的辐射成像通道由风云-2的5个增加到14个,接近欧美第三代静止气象卫星的16个通道。风云-4还配备了有912个光谱 On December 11, 2016, the launch of China’s second-generation geostationary orbit meteorological satellite, Star-4, was launched by the Long March-3B carrier rocket. It uses three-axis stability control, take over the stability of the spin-2, its continuity, stability can greatly enhance the level of China’s still-weather meteorological satellite detection. The radiation imaging satellite channel increased from 5 in FY-2 to 14, close to the 16 channels of the third generation of stationary weather satellites in Europe and the United States. FY-4 is also equipped with 912 spectra