The latest information after the launch of Shenzhou VII

2008-9-25 8:35:52

Zheng Guoguang directed the space weather protection of Shenzhou VII.

Zong Weiguo, correspondent of China Meteorological News, reported that on the morning of September 22nd, Zheng Guoguang, director of China Meteorological Bureau, came to the space weather forecasting operation room of the National Space Weather Monitoring and Early Warning Center to provide service mobilization and guidance for the space weather support work of Shenzhou VII manned spacecraft.

Zheng Guoguang stressed that we should do our best to provide space weather support services for the Shenzhou VII mission, just like the Olympic weather service. He put forward five requirements for space weather protection. First, we should not only pay attention to space weather, but also pay attention to space environment. Second, space debris is a potential threat that cannot be ignored in space activities, and it is necessary to strengthen the monitoring of space debris; The third is to strengthen the production of "Shenzhou VII" space weather support decision-making products; Fourth, reduce the sending process of service products, and consider sending key early warning information directly to important users through mobile phones; The fifth is to arrange duty, strive to make their own products, and seize users through products.

It is reported that in order to ensure the complete success of the Shenzhou VII manned space mission, the National Space Weather Monitoring and Early Warning Center is paying close attention to space weather changes and striving to provide timely, accurate and efficient space weather support services for the Shenzhou VII mission.

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Ensure the safety of astronauts walking out of the cabin. Meteorological "Olympic Star" Defends "Shenzhou"

China Meteorological News reporter Wang reported that a few days ago, the reporter learned from the National Satellite Meteorological Center (National Space Weather Monitoring and Early Warning Center) of China Meteorological Bureau that China's first new generation polar-orbiting meteorological satellite, which is currently in the on-orbit testing stage and has played a huge role in the Olympic meteorological service and is affectionately called "Olympic Star" by the public, will continue to contribute to the flight meteorological support of Shenzhou VII manned spacecraft: it not only overlooks the earth, but also provides satellite cloud images to support weather forecasting, and monitors the space radiation environment in real time.

According to researcher Xue Bingsen, chief forecaster of the National Space Weather Monitoring and Early Warning Center, the most important thing for the space weather support service of Shenzhou VII is to ensure the safety of astronauts' extravehicular walking, and the biggest threat to astronauts' extravehicular walking is space radiation, such as encountering an abnormal area in the South Atlantic with high radiation flux, which will seriously affect the health of astronauts. Therefore, it is particularly important to monitor the space radiation environment in real time and obtain an environment with low space radiation flux. Fengyun-3 A satellite is good at monitoring space radiation environment. The space weather monitoring load carried on it can provide real-time monitoring data with a time resolution of 2 seconds, so that the National Space Weather Monitoring and Early Warning Center can grasp the real situation of space weather in time, thus calculating the dynamic changes of radiation environment and ensuring services will become handy.

Xue Bingsen said that the three characteristics of Fengyun-3 A star in space environment monitoring will become the "sword" of Shenzhou VII space weather support service. First, monitor data in real time. As the main load, the space weather monitoring instrument was carried on FY-3 A star for the first time, and the space monitoring data was transmitted to the ground receiving station in real time as business data together with meteorological data, which broke the situation that FY-1 and FY-2 meteorological satellites took space weather monitoring as their subsidiary business. Second, the monitoring data is autonomous. In the past, space weather support services mainly relied on foreign data, but the use of foreign data was restricted, especially at some critical moments, foreign countries even stopped publishing data, which greatly affected the forecasting work. After data autonomy, the use will be unrestricted, and you can get any data you need. Third, the accuracy of monitoring data is high. The time resolution is 2 seconds, which is 8 times finer than the data published abroad, and the obtained data is equivalent to the similar data of the US Space Weather Forecast Center.

"While providing space environmental monitoring data, the biggest use of Fengyun-3 A star is to provide atmospheric parameters and surface conditions, which provides strong support for short-term forecast of ground weather." Director Zhu Xiaoxiang of the Remote Sensing Application Office of the National Satellite Meteorological Center introduced that during the meteorological support service of Shenzhou VII, Fengyun-3 A satellite was loaded with 1 1 international advanced instruments and 90 detection channels, and the ground weather of Jiuquan Satellite Launch Base was monitored day and night with a high spatial resolution of 250 meters, and the global weather was scanned twice a day, with a scanning width of 2,900 kilometers. Fengyun-3A carries an atmospheric infrared vertical detector, which can form three-dimensional detection in the range of more than 30 kilometers on the ground. In addition, the half-hour observation data of FY-2 geostationary meteorological satellite in China and observation data of foreign meteorological satellites, combined with numerical forecast and conventional encrypted observation data, will greatly improve the refinement and accuracy of the "Shenzhou VII" meteorological forecast.

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The ground weather has no adverse effect on the launch of Shenzhou VII.

Miao, a reporter from China Meteorological News, reported that on September 24th, the reporter learned from the Central Meteorological Observatory that during the launch window of Shenzhou VII spacecraft, the ground weather had no adverse effect on the launch of the spacecraft.

According to Qiao Lin, chief forecaster of the Central Meteorological Observatory, it is estimated that during the launch window of Shenzhou VII spacecraft on September 25th, the ground wind speed will be 5-7m/s, the wind direction will be southeast, the maximum wind speed at high altitude will be 50-55m/s, and the wind direction will be west-southwest, which meets the launch requirements. There are more clouds in the sky, so there may be no precipitation or lightning. The temperature is above 10℃; Visibility is about 25 kilometers, and there is no dusty weather. Such weather will not adversely affect the launch of the spacecraft.

It is reported that the Central Meteorological Observatory will revise and launch the latest forecast in time according to the weather evolution.

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Space weather is conducive to the launch of Shenzhou VII.

Wang, a reporter from China Meteorological News, reported that the space weather bulletin "Shenzhou VII Space Weather Service" recently issued by the National Space Weather Monitoring and Early Warning Center of China Meteorological Bureau said that during the launch of Shenzhou VII manned spacecraft, the space weather conditions were good, and there would be no bad space weather events, and the space weather conditions had no adverse effects on the launch and on-orbit operation of the spacecraft. It is suggested that astronauts' extravehicular activities should avoid the abnormal area of the South Atlantic with strong space particle radiation.

It is reported that the National Space Weather Monitoring and Early Warning Center began to provide uninterrupted space weather monitoring and early warning services one month before the launch of Shenzhou VII. After the "Shenzhou VII" is put into orbit, the center will also provide suggestions on the astronauts' exit timing, and provide services such as spacecraft orbit decay prediction and spacecraft measurement and control error estimation, so as to escort the successful completion of the "Shenzhou VII" mission.

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Three aspects of data support the space weather guarantee of Shenzhou VII.

Reporter Wang of China Meteorological News recently learned from the National Space Weather Monitoring and Early Warning Center that the space weather support service provided by the center for the Shenzhou VII manned spacecraft will be based on three aspects: one is the monitoring data from Fengyun series meteorological satellites, the other is the independent ground-based detection data from China Meteorological Bureau, and the third is the domestic and foreign monitoring data provided on the Internet.

It is reported that monitoring data is the basis for developing space weather support services. The space particle composition monitor carried on Fengyun-1 star D will monitor protons, electrons and heavy ions; Solar X-ray detectors and space particle detectors carried on Fengyun-2 stars C and D will monitor solar X-rays, protons, electrons, helium ions and lithium ions; The high-energy ion detector, high-energy electron detector, radiation dosimeter, potential detector and single particle detector carried on Fengyun-3 star A will monitor protons, heavy ions and electrons in real time.

The digital altimeter of Xiamen Ionospheric Altimeter Station and all ionospheric scintillation monitors of Guangzhou Ionospheric Scintillation Monitoring Station will detect the ionospheric conditions. At the same time, the GPS stations distributed by China Meteorological Bureau all over the country will provide services for the navigation status, measurement and control and short-wave communication of Shenzhou VII.

In addition, space weather support services also need the support of a large number of satellite and ground observation data. Therefore, domestic and international monitoring data from the Internet are also essential for space weather support services.

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Four space weather factors affect Shenzhou VII.

Wang, a reporter from China Meteorological News, reported that the launch of Shenzhou VII manned spacecraft is just around the corner. After the launch of the spacecraft, there will be major activities such as astronauts leaving the cabin and accompanying satellite release. During this period, both spacecraft and astronauts will face the test of space weather. According to experts from the National Space Weather Monitoring and Early Warning Center, the launch of spacecraft, the on-orbit operation of spacecraft, the astronauts' exit from the cabin and the return of spacecraft will be mainly affected by four major space weather factors: space radiation, upper atmosphere, ionosphere and space debris.

The particularity of Shenzhou VII mission determines that the radiation environment is still an important space weather factor for astronauts' safety. Because astronauts will walk out of the extravehicular activity for the first time, it will be very dangerous if astronauts encounter solar proton events during their work outside the extravehicular activity. Therefore, in the "Shenzhou VII" space weather service, we will mainly guard against the impact of high-energy protons on the human body.

Shenzhou VII will orbit at a low altitude of 340 kilometers above the ground. Because of the high atmospheric density and great resistance to spacecraft, the maintenance of spacecraft orbital height will obviously depend on the state of the upper atmosphere. In addition, because the Shenzhou VII orbital module will be in orbit for a long time, the highly corrosive oxygen atoms in the upper atmosphere will destroy the surface materials of the spacecraft.

There are two main impacts of the ionosphere on Shenzhou VII: one is the impact on satellite navigation, positioning and measurement and control. Among them, ionospheric scintillation will affect satellite navigation and positioning, and strong scintillation will even lead to signal locking; The second is the influence on short-wave communication. Short wave signals will be reflected by the ionosphere. When the frequency used in short-wave communication exceeds the frequency allowed by the ionosphere at that time, the signal will pass through the ionosphere and shoot into outer space, and the ground will not receive the signal.

Space debris refers to the wastes left in space by human beings in the process of space activities. The collision of space debris poses a serious threat to the reliability and safety of spacecraft operation. The collision between space debris and spacecraft will bring many hazards to the space system, and in many cases, these hazards are fatal. The direct impact of space debris on space activities is mainly aimed at spacecraft, and space debris of different sizes will cause various types of damage to different parts of spacecraft. The accumulation effect of tiny fragments will change the performance of sensitive elements; The plasma generated by the impact will destroy the power supply system of the spacecraft; The impact of large space debris on spacecraft will lead to perforation, container explosion, rupture and even structural disintegration.

Facing the influence of the four major space weather, the National Space Weather Monitoring and Early Warning Center will forecast and warn the possible space weather changes, and provide avoidance and prevention suggestions, thus ensuring the safety of spacecraft and astronauts.

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"Shenzhou VII" meteorological support was fully launched.

China Meteorological News reporter Wang, Wang and Wang reported that the Shenzhou VII manned spacecraft will be launched from Jiuquan Satellite Launch Base at the end of September. On September 12, China Meteorological Bureau organized a video conference on meteorological support services for Shenzhou VII manned space mission, marking the official launch of meteorological services for Shenzhou VII manned space mission.

At present, Gansu Meteorological Bureau has set up a leading group for Shenqi meteorological support service, done all the preparatory work, completed the Shenqi launch meteorological service product library based on regional numerical model products, cooperated with Jiuquan Satellite Launch Center to complete the research and development of weather system similarity forecast in key areas of Shenqi launch, and established an objective forecast system for MOS release and a short-term forecast system for common disastrous weather in Jiuquan Satellite Launch Base. At that time, the on-site service support team, which is composed of Tao Wei, director of Lanzhou Regional Center Meteorological Observatory, Yang, chief forecaster of Lanzhou Regional Center Meteorological Observatory, and Xu Dianxiang, chief forecaster of Jiuquan Meteorological Bureau, will go to Jiuquan Satellite Launch Base to participate in on-site meteorological support services and make detailed forecasts on key support links such as vertical transshipment, liquid filling and launch window. At the same time, in order to do a good job in the meteorological support of the "Shenzhou VII" alternate site, Gansu Meteorological Bureau will also send a mobile meteorological station to the alternate site as appropriate to collect observation data in real time and provide the headquarters with the latest facts and forecasts of the alternate site at any time.

The Meteorological Bureau of Inner Mongolia Autonomous Region has also set up a leading group for "Shenzhou VII" meteorological support service, as well as a technical expert group and an emergency support group composed of experts in weather forecasting, short-term climate forecasting and satellite remote sensing. Formulate service implementation plan, and make detailed provisions on organization management, service management, operation mechanism and service products. At the same time, the density of meteorological observation was increased, and two meteorological experts were sent to the main landing site for emergency support.

The space weather guarantee provided by National Satellite Meteorological Center (National Space Weather Monitoring and Early Warning Center) will run through all stages of Shenzhou VII's launch, on-orbit operation, astronauts' exit and spacecraft return. During the period, the center will provide decision-making service materials for major space weather events for the CPC Central Committee, the State Council and relevant decision-making departments, mainly involving radiation environment and astronaut radiation dose prediction, orbital decay, upper atmosphere, ionosphere environment and space debris environment. Recently, the center has completed the technical scheme of space weather service, and released the first issue of Space Weather Bulletin-Shenzhou VII Space Weather Service on August 27th. At the same time, satellite cloud pictures and remote sensing analysis products will be provided in time during the mission implementation.

In addition, the National Meteorological Center, the National Meteorological Information Center, the Meteorological Exploration Center, the Public Meteorological Service Center, the China Meteorological News Agency, the China Meteorological Bureau Office, the Department of Forecasting and Disaster Reduction, and the Monitoring Network Department have also made preparations and publicity for the "Shenzhou VII" meteorological service guarantee.

China Meteorological Bureau put forward four requirements for this meteorological support service:

First, meteorological departments at all levels should attach great importance to it, make careful preparations, fully understand the importance of the meteorological service of Shenzhou VII, further improve the service plan, strengthen organizational leadership, strengthen duty, and formulate emergency plans to ensure the normal operation of various business systems during the Shenzhou VII mission.

Second, closely monitor the weather changes, do a good job in forecasting and strengthening rolling monitoring, without any negligence or slack; At the same time, it is necessary to strengthen the space weather forecasting service and fully demonstrate the improvement of the space weather monitoring and early warning ability of the meteorological department.

The third is to strengthen communication and provide high-quality meteorological services. It is necessary to further understand the demand, actively and timely provide targeted services, do a good job in decision-making services, and strengthen the publicity of meteorological services.

The fourth is to sum up service experience and establish a long-term cooperation mechanism between the military and the land.

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The Shenzhou VII launch site began meteorological support.

Wang Demin, a reporter from China Meteorological News, reported that in September, the Shenzhou VII manned spacecraft was ready to go. Recently, the Gansu Provincial Meteorological Bureau held a special meeting to comprehensively arrange the deployment of the "Shenzhou VII" manned spacecraft to launch meteorological support tasks. The on-site service support team consisting of Tao Wei, director of the Meteorological Observatory of Lanzhou Regional Center, and two chief forecasters, Yang and Xu Dianxiang, will go to Jiuquan Satellite Launch Center to participate in the on-site meteorological support service for the launch of Shenzhou VII manned spacecraft. This is the second time that the meteorological department of Gansu Province has provided meteorological support services for the launch of Shenzhou series spacecraft, and once again escorted the Shenzhou VII manned spacecraft.

In order to ensure the complete success of the meteorological support for the launch of Shenzhou VII, Gansu Meteorological Bureau has made preparations for the battle, and all preparations are now ready. Gansu Meteorological Bureau has completed the product library of meteorological service for Shenzhou VII launch based on regional numerical model products, completed the research and development of similarity forecast of weather system in key areas of Shenzhou VII launch in cooperation with Jiuquan Satellite Launch Base, and built an objective forecast system for MOS release and a short-term forecast system for common disastrous weather in Jiuquan Satellite Launch Base.

It is reported that in order to do a good job in meteorological support for the alternate site of the Shenzhou VII manned spacecraft, Gansu Meteorological Bureau will also send mobile weather stations to the alternate site as needed to collect observation data in real time and provide the headquarters with the latest facts and forecasts of the alternate site at any time.

It is understood that at the end of 2004, Gansu Provincial Meteorological Bureau and Jiuquan Satellite Launch Center jointly built Gansu Aerospace Meteorological Center and built a space meteorological support base in Jiuquan. In July this year, meteorological experts from Lanzhou Regional Center Meteorological Observatory and Jiuquan Meteorological Bureau went to Jiuquan Satellite Launch Base to conduct business and academic exchanges on the meteorological service guarantee for the launch of Shenzhou VII.

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"Shenzhou VII" space weather support service software passed the review.

China Meteorological News reporter Wang reported: On September 12, the business department of the National Space Weather Monitoring and Early Warning Center held a review meeting, which passed the relevant review of the space weather support service software for the Shenzhou VII manned space mission.

It is reported that the software includes five modules: data acquisition and processing, radiation environment prediction, upper atmosphere effect prediction, ionospheric environment demonstration and space debris environment prediction. A real-time service product display system based on independent observation data (including space environment monitoring data obtained by Fengyun-3 A and Fengyun-2 D) and international observation data will be established. The space weather effects that may affect the mission of Shenzhou VII spacecraft, such as radiation dose, orbit attenuation, ionospheric orbit measurement and correction, and space debris distribution, are predicted and warned in graphic form, so as to realize the space weather guarantee service function for the spacecraft.

On the same day, "Fengyun-3 0 1 Satellite Space Weather Support Service Software" and "Fengyun Series Satellite Space Environment Monitoring Data Processing System" also passed the review, and they will also play a role in the space weather support of Shenzhou VII.