The third fishing weather

Fengyun-3 has a launch mass of 2,400kg, an on-orbit flight size of 4.46m x 10m x 3.79m, and operates Fengyun-3 meteorological satellite in orbit.

The height is 836.4 kilometers, the inclination angle is 98.753 degrees, the period is 10 1.496 minutes, and the service life is more than 2 years. The detection instruments carried by FY-3 include: 10 channel scanning radiometer, 20 channel infrared spectrometer, 20 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, high development starting point and great technical difficulty. The overall performance of the satellite will be close to or reach the level of METOP being developed in Europe and NPP polar-orbiting meteorological satellite being 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 orbit meteorological satellites, approach or catch up with its development level, and enhance China's ability to participate in international cooperation and competition.

The main task of editing this paragraph

The main tasks of the satellite are:

(1) Weather forecast

In particular, the medium-range numerical weather forecast provides temperature and humidity for the global meteorological satellite Fengyun-3.

Meteorological parameters, such as cloud radiation;

(2) Monitoring

Monitoring large-scale natural disasters and ecological environment.

(3) Studying global environmental changes

Explore the law of global climate change and provide geophysical parameters for climate diagnosis and prediction;

(4) Serving 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 from cz-4 on May 27th, 2008 1 1: 02: 29, marking a new historical stage in the development of meteorological satellites and satellite meteorology in China.

Edit the technical parameters of this paragraph.

Orbit parameter satellite orbit: near-polar sun synchronous orbit

Nominal height of track: 836 km

Track inclination: 98.75 degrees.

Semi-major axis deviation of orbit entry accuracy: | δ A | ≤ 5km.

Track inclination deviation: | δ I | ≤ 0. 12.

The nominal orbit regression period is 5.5 days, and the design range is 4 to 10 days.

Track eccentricity: ≤0.00 15

Local time drift at intersection: less than 2 years 10 minute.

Satellite launch window: local time of descending node 10: 00 ~ 10: 20 or local time of ascending node 13: 40 ~ 14: 00.

The first star: the window of the morning.

Satellite Attitude Stabilization Mode: Three-axis Stabilization

Three-axis pointing accuracy: ≤ 0.3

Accuracy of triaxial measurement: ≤ 0.05.

Three-axis attitude stability: ≤ 4× 10-3/s

Directional tracking of satellite energy solar array to the sun

On-board timing methods: year-day counting and daily millisecond counting.

Time unit: 1 millisecond

Time accuracy (satellite-ground total accuracy): less than 20ms.

Data record stores and records the global detection data of other remote sensing detection instruments except the medium resolution spectral imager;

Record the data of the medium resolution imaging spectrometer for 20 minutes.

L-band real-time transmission channel for data transmission

Format standard: AOS standard recommended by CCSDS.

Original data rate: about 4.2 Mbps (after RS coding)

Carrier frequency: L-band (1698-1710 MHz) modulation system:

Eirp: 4 1dbm (when El = 5)

Global real-time transmission with program control function.

X-band real-time transmission channel (MPT)

Format standard: AOS standard recommended by CCSDS.

Original data rate: about18.7 Mbps (after RS encoding).

Carrier frequency: X-band (7750-7850MHz) Modulation mode: QPSK.

Eirp: 46 DBM (when El = 5)

Program controlled encrypted transmission.

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 (8025-8400MHz) Modulation mode: QPSK.

Eirp: 46 DBM (when El = 7)

Domestic receiving station network delayed play.

Attitude maintenance mode of technical indicators of observation instruments

Spin stability, plane error perpendicular to the spin axis of orbit

Rotational speed: 98 1 rpm, which may be increased to 100 rpm during operation.

Attitude keeping accuracy: ≤ 0.5.

Attitude measurement accuracy: ≤ 0.07.

Attitude stability: short term: ≤ 3.5 μrad/0.6 second.

Long-term: ≤ 35 microradians/30min

Spin stability, plane error perpendicular to the spin axis of orbit

The characteristics and advantages of editing this paragraph

The storm knight satellite has been developed for many years, and everyone calls it the "Olympic Star", but it was launched just before the 2008 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 Storm Knight 0 1 satellite are progressing smoothly. At present, the satellite has entered the shooting range and the entry test is in good condition. The meteorological map taken by Fengyun-3 meteorological satellite is the responsibility of the National Satellite Meteorological Center of China Meteorological Bureau.

Storm Knight was successfully launched in the second half of 2008, including data receiving, processing, product generation and distribution. 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 detectors and infrared vertical detectors, we can not only understand the surface characteristics of clouds and atmosphere, but also understand the vertical structure distribution of atmospheric temperature and humidity, which is very important for weather forecast, especially numerical forecast.

Realize global high-resolution observation

This 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 all over the world. At the same time, the China Meteorological Bureau cooperated with Sweden to establish a data receiving service in the Arctic, which can obtain global observation data and transmit them to Beijing.

Achieve all-weather, all-day work.

Fengyun-3 satellite is not restricted by day and night, nor is it affected by various weather conditions. It can work under various conditions and provide 24-hour observation service. This is a boon for remote sensing technology.

Edit the first of several items in this paragraph.

In September 2000, the state approved the establishment of Fengyun-3 satellite. Fengyun-3 satellite is a meteorological satellite independently developed by China and reaching the international advanced level.

A new generation of polar-orbiting meteorological satellites has created many firsts. The number of payload is the first: it is the first time for domestic satellites to adopt a new satellite platform and carry 1 1 high-performance payload detection instruments. The number of single moving parts is the first: its 20 single machines have 35 moving parts, which is the largest number of satellite moving parts in China. The first observation function of meteorological satellite: its remote sensing instrument has a complete observation spectrum from vacuum ultraviolet ray, ultraviolet ray, visible ray, infrared ray to microwave frequency band. Both optical remote sensing and microwave remote sensing 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, Fengyun-3 satellite will be fully put into use within 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 load for this section.

Fengyun-3 satellite has a mass of 2298.5 kg and will adopt a three-axis stable attitude control mode. It is aimed at Fengyun-3 meteorological satellite.

Satellites designed with quasi-international advanced technology level have high technology content, complex system and great difficulty in development. It is the earth observation satellite with the largest investment and the strongest function in China at present. Fengyun-3 satellite carries 1 1 payload, 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 definition explanation.

Meteorological satellite is an artificial satellite for meteorological observation of the atmosphere. It has the characteristics of large scope, timeliness, rapidity and continuity, and can send meteorological information such as cloud pictures to ground users. The 1958 satellite launched by the United States began to carry meteorological instruments. 1,1In April 1960, the United States launched the first artificial experimental meteorological satellite for the first time. By the end of 1990, it was on Fengyun-3 meteorological satellite.

Within 30 years, a total of 1 16 meteorological satellites have been launched in the world, forming a global meteorological satellite network, eliminating the blank areas of meteorological observation in 4/5 regions of the world, enabling people to accurately obtain continuous and global atmospheric motion laws, make accurate meteorological forecasts, and greatly reduce disastrous losses. According to incomplete statistics, if natural disasters can be predicted for 3-5 days, the losses in agriculture can be reduced by 30%~50%, and only agriculture, animal husbandry and fishery can benefit 654.38+0.7 billion US dollars every year. For example, from 1982 to 1983, none of the 33 typhoons that landed in China were missed. 1986 Typhoon 8607, which landed near Shantou, Guangdong Province, lost more than 10 billion yuan due to timely and accurate forecast. 1 April 19601day, the United States launched the world's first experimental meteorological satellite "Tyrus"1. This experimental meteorological satellite is a 18 cylinder with a height of 48 cm and a diameter of 107 cm. The satellite is equipped with a TV camera, a remote recorder and a photo data transmission device. It circled the earth 1 135 times in a nearly circular orbit with a height of 700 kilometers, and * * * took 22,952 cloud pictures and topographic maps, with a useful rate of 60%. It had the best technical performance at that time. From 1960 to 1965, the United States launched 10 meteorological satellites, of which only the last two were in sun-synchronous orbits. 1 On February 3, 966, the United States developed and launched the first practical meteorological satellite "Elsa"1,which is the second generation of American sun-synchronous orbit meteorological satellite, with an orbital altitude of about 1400 km and a resolution of 4,000 meters. From 1966 to 1969, * * * launched 9 satellites and obtained a lot of meteorological data. Its launch successfully opened up a new field for the development of meteorological satellites in the world, greatly reducing all kinds of losses caused by meteorological reasons.

Edit this China satellite.

China launched its first meteorological satellite Fengyun-1 on September 7th, 1988. The clarity of the satellite image can be comparable to that of NOAA in the United States, 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, the satellite ground receiving and application system, which mainly receives Fengyun satellites and also receives foreign environmental satellites, has played a great 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-1D (launched in 2002) and Fengyun-2C (launched in 2004). 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 operational monitoring network of Earth observation satellites of the World Meteorological Organization.

Edit this paragraph Fengyun 3 successfully launched.

On May 27th, 2008, 1 1: 02, China's first new generation polar-orbiting meteorological satellite Fengyun-3 was successfully launched in Taiyuan Fengyun-3 meteorological satellite.

The launch center was launched by the "Long March 4 C" carrier rocket developed by China. This satellite is loaded with 10 advanced detection instruments, which will make a qualitative leap in China's meteorological observation capability.

Edit this section Fengyun -3 B star launch

Business opportunity release

The head of Taiyuan Satellite Launch Center in China said today that China will launch the second Fengyun-3 meteorological satellite here with the Long March 4 C carrier rocket. 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 reported165438+1In the early morning of October 5, the "Long March IV C" carrier rocket sent 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 were both developed by Shanghai Aerospace Technology Research Institute. It is understood that in addition to 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, regional air quality, and even predict global food production. According to the plan, China will launch 14 meteorological satellites in the next 10 years. [2]

Detailed introduction

Compared with Fengyun-3 A, what role will Fengyun-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 the polar-orbiting meteorological satellite Fengyun-3, which is the second-generation polar-orbiting meteorological satellite series that realizes global, all-weather, multi-spectral, stereoscopic and quantitative remote sensing in China. Fengyun-3' s first satellite (FY-3 A) was successfully launched on May 27th, 2008. After on-orbit test, operational trial operation and operational operation, a wealth of earth's atmospheric sounding data has been obtained, which has played an important role in the guarantee of major meteorological services. 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 detection data evenly distributed in time and space, and provide more satellite detection data for the numerical weather forecast model, the satellite to be launched is arranged as an afternoon star, so as to realize the pattern that Fengyun-3 satellites are in orbit at the same time in the morning and evening, and meet the requirements of global data coverage four times a day. Yang Jun said that this is also the first time that China has launched the polar-orbiting meteorological satellite "Noon Star", which is also of great significance to the cause of meteorological satellites in China and will make the cause of meteorological observation more stable and reliable. The performance index is more perfect. Yang Zhongdong told reporters that compared with the A star of Fengyun-3, the second meteorological satellite of Fengyun-3 has no obvious changes in satellite platform, payload configuration and main functional performance indicators. However, as the first star of a new generation of polar-orbiting meteorological satellites, there are still some shortcomings in the operation of individual instruments. After the technical summary and research and development of meteorological satellite experts, the second meteorological satellite of Fengyun-3 is more perfect in the functions of 1 1 remote sensing detection instruments, especially infrared spectrometer, microwave imager and ultraviolet ozone vertical detector. After this satellite is successfully launched and put into practical operation, Fengyun-3 satellite will play a greater role in numerical weather forecast, planetary scale weather analysis, mesoscale weather forecast, typhoon position and intensity estimation, earth ecology and environment analysis, global climate change analysis and other application fields. The meteorological department is fully prepared. Yang Jun said that the launch time of Fengyun-3, the second meteorological satellite, was mainly determined by comprehensively considering space requirements, site arrangement, orbit calculation and other factors. Generally speaking, the launch of meteorological satellites will be affected by both meteorological conditions and space environment. Previously, the meteorological department made full preparations for meteorological service guarantee and space weather guarantee. Yang Zhongdong told reporters that in order to better operate the "Fengyun-3" double-star observation system, meteorological satellite experts have carried out a lot of research and development and exploration. Because the first-phase ground application system around the construction task of FY-3 A satellite can't better meet the dual-star operation business, in order to meet the data processing and service requirements of FY-2 meteorological satellite after launch, relevant technicians have carried out function optimization, performance expansion and adaptability construction according to the change of its technical state. It is reported that the second-phase construction goal of Fengyun-3 polar-orbiting meteorological satellite application system is to appropriately increase computer resources and improve data processing capabilities. On the basis of the first phase of the project, the functions and performance of four domestic stations, 1 foreign stations and 1 data processing and service center were optimized, and all services, testing products and monitoring and analysis services were completed. In addition, application demonstrations in various fields were carried out in conjunction with other departments, so that the application system could receive, process and store the data of the double-star at the same time. The application system of the second phase project should have high stability, reliability and flexibility, ensure the integrity and safety of information collection, realize data sharing and facilitate users to obtain data. [3]

Conceptual explanation

165438+1On October 5th, the second meteorological satellite of China Fengyun-3 was successfully launched. This is the first time that China has launched a polar-orbiting meteorological satellite-Wuxing, which will form a pattern of simultaneous orbit of the morning and evening stars with Fengyun-3 A star. So what exactly are "morning star" and "afternoon star"? The reporter interviewed Lu Naimeng, deputy director of the National Satellite Meteorological Center and commander-in-chief of the ground application system of Fengyun-3 meteorological satellite, to unlock the passwords of the satellites in the morning and afternoon. Lu Naimeng told reporters that from an international point of view, the policy of polar-orbiting meteorological satellites is to observe with a double-star network. The general configuration is one satellite in the morning and one satellite in the afternoon. Because meteorological satellites mainly monitor weather systems, and the performance of weather systems in the morning and afternoon is very different. For example, on the Qinghai-Tibet Plateau in China, thunderstorms mostly occur in the afternoon and at night, and more than 90% of the rainfall in this area is intermittent at night. Therefore, it is particularly important for China, a country with diverse climate, to develop morning stars and afternoon stars to capture different weather systems in the morning and afternoon. The division of meteorological satellites in the morning and afternoon mainly refers to whether satellites fly over the equator in the morning or afternoon from the perspective of satellite orbit. As satellite users, we can roughly understand that the morning star means that meteorological satellites fly over this place in the morning and the afternoon star means that meteorological satellites fly over this place in the afternoon. Lu Naimeng said that the morning and afternoon satellite operation pattern composed of sister stars A and B of Fengyun-3 can make the whole Fengyun-3 meteorological satellite system more complete and play a vital role in promoting China's meteorological satellite cause. [4] Participating Atlas More Atlas Participating Pictures (8)

China mainstream satellite

Dongfanghong No.4? Beidou navigation test satellite? Dongfanghong No.3? Fengyun-1 meteorological satellite? Fengyun-2 meteorological satellite? Dongfanghong-1 satellite Dongfanghong-2 A? Dongfanghong 3 satellite? Practice a satellite? Resource one satellite? China-Pakistan Earth Resources Satellite? Chang 'e-1? Tianlian No.1? Fengyun no.3

China Aerospace

Satellite scientific exploration and technical test satellite practice series practice No.1 satellite? Practice the second satellite? Practice the fourth satellite? Practice 5 satellite

Space exploration binary star program? Exploration satellite one? Exploration 2 satellite

Return to satellite

Meteorological satellite Fengyun-1 meteorological satellite? Fengyun-2 meteorological satellite? Fengyun-3 meteorological satellite

Earth observation satellite resource satellite China-Brazil earth resources satellite? "Resources" Earth Resources Satellite Series

Ocean satellite Ocean One? Haiyang No.2

Environmental satellite environment 1

Remote sensing satellite 1? Remote sensing satellite 2? Remote sensing satellite 3? Remote sensing satellite 4? Remote sensing satellite 5? Remote sensing satellite 6? Remote sensing satellite 7? Remote sensing satellite 8? Remote sensing satellite 9? Remote sensing satellite 10? Remote sensing satellite 1 1

Communication and broadcasting satellite Dongfanghong Dongfanghong-1 satellite? Dongfanghong 2 satellite? Dongfanghong 3 satellite? Dongfanghong-4 satellite

Cigna 1? Cigna II? Cigna 3? Cigna 4? Cigna 5? Xinnuo 6

ZTE ZTE 5A? ZTE 6B? Zhongxing 8? Zhongxing 9? Zte 10? ZTE 1 1

Asia Pacific Asia Pacific 2R? Asia Pacific Satellite 5? Asia-Pacific satellite 6? Asia-Pacific satellite 7

Relay satellite Tianlian-1

Positioning satellite Beidou satellite navigation system? Beidou-1? Beidou-2

The launch vehicle is now in service, Long March 1? Long March II? Long March 3? Long March 4

Develop the Long March 5? Long March 6? Long March 7

Space probe, lunar exploration project? Chang 'e-1? Chang 'e II? Chang 'e III? Chang 'e IV

Mars Exploration China Mars Exploration Program? Firefly 1

Manned space service? Shenzhou I? Shenzhou II? Shenzhou III? Shenzhou IV? Shenzhou 5? Shenzhou VI

Shenzhou VII? Shenzhou VIII

Are you developing Shenzhou-9? Shenzhou ten

The space station is currently serving Tiangong-1.