Introduce Fengyun-3 meteorological satellite, thanks.
with an altitude of 836.4km, an inclination of 98.753 degrees, a period of 11.496 minutes and a service life of more than 2 years. The detection instruments loaded on FY-3 are: 1-channel scanning radiometer, 2-channel infrared spectrometer, 2-channel medium resolution imaging spectrometer, ozone vertical detector, total ozone detector, solar irradiance monitor, 4-channel microwave temperature detection radiometer, 5-channel microwave hygrometer, microwave imager, earth radiation detector and space environment monitor. Fengyun-3 has many payloads, a high starting point for development and great technical difficulties. The overall performance of the satellite will approach or reach the level of METOP being developed in Europe and NPP polar-orbiting meteorological satellite to be developed in the United States. The successful development of Fengyun-3 satellite will further narrow the gap between China and developed countries such as the United States and Europe in the field of polar-orbiting meteorological satellites, approach or catch up with its development level, and enhance China's ability to participate in international cooperation and competition.
main tasks of editing this paragraph
The main tasks of the satellite are:
(1) weather forecast
, especially the medium-range numerical weather forecast, providing global meteorological parameters such as temperature and humidity Fengyun-3 meteorological satellite
and cloud radiation;
(2) Monitoring
Monitoring large-scale natural disasters and ecological environment.
(3) Study global environmental change
Explore the laws of global climate change and provide geophysical parameters for climate diagnosis and prediction;
(4) It provides meteorological services for military meteorology, aviation, navigation and other professional meteorology
It can provide global and regional meteorological information. A new generation of polar-orbiting meteorological satellite "Fengyun-3" was successfully launched into space from cz-4 at Taiyuan Satellite Launch Center at 11: 2: 29 on May 27th, 28, marking a new historical stage for the development of meteorological satellites and satellite meteorology in China.
Edit the technical parameters of this paragraph
Orbit parameters Satellite orbit: near-polar sun-synchronous orbit
Nominal altitude of orbit: 836km
Orbit inclination: 98.75
Semi-major axis deviation of orbit entry accuracy: | δ A | ≤ 5km
Orbit inclination deviation: |δI | ≤ .12
. The design range is 4 to 1 days
Orbital eccentricity ≤.15
Local time drift at the intersection: less than 1 minutes in 2 years
Satellite launch window: 1: ~ 1: 2 local time in descending node or 13: 4 ~ 14: local time at the ascending intersection
First star: morning window.
Satellite attitude and attitude stabilization mode: three-axis stabilization
Three-axis pointing accuracy: ≤ .3
Three-axis measurement accuracy: ≤ .5
Three-axis attitude stability: ≤ 4× 1-3/s
Satellite energy solar array directional tracking to the sun
On-board timing mode:
record the data of moderate resolution imaging spectrometer for 2 minutes.
data transmission l-band real-time transmission channel (ahpt)
format standard: AOS standard recommended by CCSDS
original data rate: about 4.2 Mbps (after RS coding)
carrier frequency: l-band (1698-171MHz) modulation system:
eirp: 41dbm (El = 5.
x-band real-time transmission channel (MPT)
format standard: AOS standard recommended by CCSDS
original data rate: about 18.7 Mbps (after RS coding)
carrier frequency: x-band (775-785MHz) modulation mode: qpsk
eirp: 46 DBM (El = 5.
x-band delay transmission channel (DPT)?
format standard: AOS standard recommended by CCSDS
original data rate: about 93 Mbps (after RS coding)
carrier frequency: X-band (825-84MHz) modulation mode: QPSK
eirp: 46 DBM (when El = 7)
delayed playback in domestic receiving station network.
attitude maintenance mode of technical indicators of observation instrument
Spin stability, error of spin axis perpendicular to orbital plane < .5
Spin rate: 98 1 rpm, which may be increased to 1 rpm in operation
Attitude maintaining accuracy: ≤ .5
Attitude measuring accuracy: ≤ .7
Attitude stability: ≤ 3.5 μrad/.6 second
. .5
Edit the characteristics and advantages of this paragraph
The development of storm riders satellite has been going on for many years. Everyone calls it "Olympic Star", but it was launched just before the 28 Beijing Olympic Games. During the Olympic Games, it will provide meteorological support services for the Olympic Games together with Fengyun-2 meteorological satellite. Preparations for the launch of the storm riders 1 satellite are progressing smoothly. At present, the satellite has entered the shooting range, and the approach test is in good condition. The National Satellite Meteorological Center of China Meteorological Bureau is responsible for the construction of the ground application system of the meteorological map < P > taken by Fengyun-3 meteorological satellite, including data receiving, processing, product generation and distribution, etc. storm riders was successfully launched in the second half of 28. Fengyun-3 is a new generation of polar-orbiting satellite, and its main features should be described from three aspects.
Three-dimensional detection of the atmosphere will be realized
Because the satellite carries advanced microwave detection instruments and infrared vertical detectors, not only the surface characteristics of clouds and the atmosphere, but also the vertical structure distribution of atmospheric temperature and humidity can be understood, which is very important for weather forecast, especially for numerical forecast.
realizing global high-resolution observation
is of great value to global climate and natural disaster monitoring. Fengyun-3 satellite has a strong on-board storage capacity, which can store data observed around the world. At the same time, the China Meteorological Bureau has cooperated with Sweden to establish a data receiving service in the Arctic, which can obtain global observation data and transmit them to Beijing.
All-weather and full-time operation has been realized
Fengyun-3 satellite is not limited by day and night, nor affected by various weather conditions, and can work under various conditions and provide 24-hour observation service. This is a gospel for remote sensing science and technology.
edit a number of items in this paragraph. first
in September p>2, the state approved the establishment of Fengyun-3 satellite. Fengyun-3 satellite is a new generation polar-orbiting meteorological satellite independently developed by China and reaching the level of international advanced Fengyun-3 meteorological satellite < P >. It has created many firsts. The number of payload on board is the first: it adopts a new satellite platform and carries 11 high-performance payload detection instruments, which is the first time on domestic satellites. The number of moving parts of a single machine is the first: its 2 single machines have 35 moving parts, which is the largest number of moving parts of satellites in China. The first observation function of meteorological satellite: its remote sensing instrument has complete observation spectrum from vacuum ultraviolet ray, ultraviolet ray, visible light ray and infrared ray to microwave frequency band. It has both optical remote sensing and microwave remote sensing, and can realize all-weather, all-day, multi-spectral, three-dimensional and quantitative detection, which is at the same development level as the new generation meteorological satellites in Europe and America. According to the report, FY-3 satellite will be fully put into use in three weeks at the longest after its successful launch, which will not only provide more refined meteorological services for the Beijing Olympic Games, but also make it possible for China to make medium-term digital weather forecast.
Edit the loading load of this section
Fengyun-3 satellite has a mass of 2,298.5kg, and will adopt a three-axis stable attitude control mode. It is designed aiming at the quasi-international advanced technical level of Fengyun-3 meteorological satellite < P >, with high technical content, complex system and great difficulty in development. It is the largest investment and most powerful earth observation satellite in China at present. Fengyun-3 satellite carries 11 payloads, including scanning radiometer, infrared spectrometer, microwave thermometer, microwave hygrometer, medium resolution spectral imager, microwave imager, total ultraviolet ozone detector, vertical ultraviolet ozone detector, earth radiation detector, solar radiation monitor and space environment monitor.
Edit this paragraph to explain
meteorological satellite is a man-made satellite for meteorological observation of the atmosphere. It has the characteristics of large scope, timely, rapid and continuous integrity, and can send meteorological information such as cloud pictures to ground users. In 1958, man-made satellites launched by the United States began to carry meteorological instruments. On April 1, 196, the United States first launched the first man-made experimental meteorological satellite. By the end of 199, 116 meteorological satellites had been launched in FY-3 meteorological satellite
3 years, which has formed a global meteorological satellite network, wiped out the blank areas of meteorological observation in 4/5 parts of the world, and made people According to incomplete statistics, if natural disasters can be predicted for 3-5 days, the losses in agriculture can be reduced by 3%~5%, and only agriculture, animal husbandry and fishery can benefit 17 million US dollars annually. For example, from 1982 to 1983, none of the 33 typhoons that landed in China were missed. Typhoon No.867, which landed near Shantou, Guangdong Province in 1986, lost more than 1 billion yuan due to timely and accurate forecast. On April 1, 196, the United States launched the world's first experimental meteorological satellite "Tyros 1". This experimental meteorological satellite is 18 cylinders, 48 cm high and 17 cm in diameter. The satellite is equipped with a TV camera, a remote tape recorder and a photo data transmission device. It orbits the earth 1135 times in a 7-kilometer-high near-circular orbit, and * * * took 22,952 cloud pictures and topographic photos, with a useful rate of 6%. It has the best technical performance at that time. From 196 to 1965, the United States launched 1 "Tiros" meteorological satellites, of which only the last two were sun-synchronous orbit. On February 3, 1966, the United States developed and launched the first practical meteorological satellite "Aisa 1", which is the second generation of American sun-synchronous orbit meteorological satellite, with an orbit height of about 14 kilometers and a resolution of 4 meters under the satellite. From 1966 to 1969, * * * launched nine satellites and obtained a lot of meteorological data. Its launch has successfully opened up a new field of world meteorological satellite development, greatly reducing all kinds of losses caused by meteorological reasons.
Edit this paragraph of China Satellite
On September 7th, 1988, China launched its first meteorological satellite, Fengyun-1, a sun-synchronous orbit meteorological satellite. The clarity of the satellite cloud image can be comparable to that of the American NOAA satellite cloud image, but it only worked for 39 days due to the failure of the on-board components. After that, four polar-orbiting meteorological satellites (Fengyun) and three geostationary meteorological satellites (Fengyun-2) were successfully launched, which experienced the development process from polar-orbiting satellites to geostationary satellites and from experimental satellites to operational satellites. At the same time, a satellite ground receiving and application system, which mainly receives Fengyun satellites and also accepts foreign environmental satellites, has played a significant role in meteorological disaster reduction and prevention, national economy and national defense construction. At present, China's polar-orbiting meteorological satellites and geostationary meteorological satellites have been put into operation. The satellites in orbit are Fengyun-1 D (launched in 22) and Fengyun-2 C (launched in 24). China is one of the few countries in the world with both polar-orbiting and geostationary meteorological satellites, and it is an important member of the World Meteorological Organization's operational monitoring network for Earth observation satellites.
Fengyun-3 was successfully launched in this section
At 11: 2 on May 27th, 28, Fengyun-3, China's first new generation polar-orbiting meteorological satellite, was successfully launched in Taiyuan Fengyun-3 meteorological satellite
The launch center was launched with the "Long March IV C" carrier rocket developed by China. After the launch of this satellite loaded with more than 1 kinds of advanced detection instruments, China's meteorological observation capability will be greatly improved.
editing the launch of Fengyun-3 B star in this section
Opportunity to launch
The person in charge of Taiyuan Satellite Launch Center in China said today that China will launch the second Fengyun-3 meteorological satellite by using the Long March 4 C carrier rocket here in the near future. At present, satellites, rockets, launch sites and measurement and control systems are in good condition, and all preparations are progressing smoothly. [1]
successful launch
Taiyuan Satellite Launch Center reported that in the early morning of November 5, the "Long March IV C" carrier rocket put the second "Fengyun III" meteorological satellite into the scheduled orbit at Taiyuan Satellite Launch Center. This satellite will be networked with the first Fengyun-3, and the global scanning will be changed from 2 times a day to 4 times, thus improving the observation ability of severe weather such as typhoons and thunderstorms. It is reported that the "Long March 4 C" carrier rocket and the "Fengyun 3" meteorological satellite are all developed by Shanghai Aerospace Technology Research Institute. It is understood that in addition to the weather forecast, Fengyun-3 B has the ability to monitor natural disasters such as drought, flood and sandstorm, ecological environment, global ice and snow coverage and ozone distribution, and regional air quality, and even predict global grain output. According to the plan, China will launch 14 meteorological satellites in the next 1 years. [2]
Describe in detail
Compared with FY-3 A, what effect will FY-3 B, the second meteorological satellite just launched by China, play? The reporter interviewed Yang Jun, director of the National Satellite Meteorological Center, and Yang Zhongdong, director of the System Development Office of the National Satellite Meteorological Center, to unveil the mystery of the new members of meteorological satellites for the public. This is the first time that China has launched a polar-orbiting meteorological satellite "Fengyun-3", which is the second-generation polar-orbiting meteorological satellite series in China to realize global, all-weather, multi-spectral, three-dimensional and quantitative remote sensing. The first satellite of FY-3 (FY-3 A) was successfully launched on May 27, 28. After on-orbit test, operational trial operation and operational operation, it has obtained a wealth of earth's atmospheric sounding data and played an important role in major meteorological service guarantee. According to Yang Jun, the main purpose of launching this satellite is to complete the experimental mission of the whole Fengyun-3 series and realize the constellation observation of meteorological satellites. Constellation observation means that this meteorological satellite and A star form different time windows, which makes the whole observation system of Fengyun-3 more complete. At present, the A star of Fengyun-3 is the morning star, which can provide global coverage detection data twice every 24 hours. In order to better obtain the time