At 13:40 on September 21, China successfully launched haiyang-2-03 into the scheduled orbit with the long march 4B carrier rocket at Jiuquan Satellite Launch Center. Haiyang-2-03 satellite is planned and constructed by the national civil space infrastructure. It is the second operational satellite of China’s Marine Dynamic Exploration Series. The satellite was developed by the Fifth Academy of China Aerospace Science and Technology Corporation. The radar altimeter and microwave scatterometer carried by satellite can realize high precision and high resolution real-time observation of sea surface height, significant wave height and sea surface wind field. The AIS ship automatic identification system carried by satellite has the ability of global ship identification. The DCS subsystem on board can receive, store and transmit the buoy survey data in the sea area, which effectively improves the data accuracy. < p > < p > haiyang-2 03 satellite is the third satellite in the haiyang-2 series, and will be operated in network with haiyang-02 satellite launched two years ago. The haiyang-2 series belongs to the marine dynamic environment exploration satellites. Three satellites have been successfully launched, including 01 satellite for scientific research, 02 satellite and 03 satellite for operational satellite. < / P > < p > at that time, with Samsung networking, China will have the world’s first marine dynamic environment observation network, which will realize the observation of a series of marine dynamic environment elements on the global sea surface, provide information support for China’s marine disaster prevention and mitigation, meteorology, transportation and scientific application, help build a global ocean observation network, and improve the international status of China’s marine satellite system. < p > < p > different from the previously launched sun synchronous orbit haiyang-02, the ocean-2-03 satellite adopts an inclined orbit. Zhang Qingjun, chief commander and chief designer of haiyang-2-03 satellite, said that 03 satellite is the first large-scale remote sensing satellite to operate in an inclined orbit in China. The reason why it chose such an orbit is to speed up the satellite revisit to the area within 70 degrees of the earth’s north-south latitude, shorten the observation interval of the region, and improve the observation efficiency. According to the plan, China will build a three-star ocean dynamic environment observation network composed of one polar orbit satellite and two inclined orbit satellites. After three-star networking, the observation efficiency will be greatly improved, from once every three days in the past to twice a day, so that the marine dynamic environment observation will reach the hourly level, covering 100% of the global area in 12 hours. < p > < p > satellites can be used for typhoon monitoring. Zhang Qingjun introduced that in the early stage of typhoon formation, there were only wind waves and no rain cloud clusters formed. The scale of typhoon can be directly observed by looking at the cloud map, but it is difficult to quantitatively monitor the intensity of Typhoon. Haiyang-2 satellite belongs to microwave remote sensing satellite, which can give full play to the characteristic ability of quantitative detection of typhoon intensity, and has not caused serious harm It can be detected when. In August this year, typhoon senlak No.3 and typhoon hegebi No.4 successively “stepped on the stage”. Haiyang-2-02 satellite, together with haiyang-1 satellite and China France ocean satellite, monitored in real-time. In the future, haiyang-2-03 will also join in. < p > < p > the relevant departments can also infer the important marine dynamic phenomena that occur or will occur through the satellite observation data, and even solve the important meteorological environmental problems such as El Nino phenomenon, annual variation of inland lake water surface, and whether the ice sheets in the north and south poles and Greenland are melting. The long march 4B carrier rocket is a normal temperature liquid three-stage carrier rocket developed by the eighth Institute of Aerospace Science and technology group. It has the ability to launch various types of satellites with different orbit requirements. < p > < p > this launch is the launch of the rocket test team back to Jiuquan Satellite Launch Center after two years. Under the high-density launch and severe quality situation, the team withstood the pressure and paid close attention to the quality, successfully started the high-density launch work in Jiuquan this year, laying a solid foundation for successfully completing the subsequent multiple missions in Jiuquan Satellite Launch Center. < p > < p > the launch rocket is equipped with grid rudder falling area control system. After the first and second stages are separated, the first stage enters the return section (descent section), and the grid rudder surfaces are expanded in groups to stabilize the rocket body, and the attitude and landing position of the first stage return section are actively controlled. It is said that “gta5” will be launched on Google cloud game platform stadia

By ibmwl