Domestic Compass II “laser eye” shock NASA
data for: last November, the biennial air show in Zhuhai has dressed the opening, a group of newly developed aerospace wonderful debut, much audience attention. The picture shows the navigation satellite positioning system in the China Aerospace Science and Technology Corporation booth display.
tens of thousands of kilometers away from the ground satellite navigation, precision measurement and control how they achieve? Installed on the satellite laser reflector is a good solution. Reporters learned yesterday from the CAS Shanghai Astronomical Observatory, hosted by the Yang Fumin researchers developed domestic satellite laser reflector, through the Compass II M1 satellite two years of operation has proved that its performance has reached international advanced level. The laser reflectors are the International Laser Ranging organization recognized as the current “best design”, has caused NASA, the European Space Agency, Russian Space Agency peer attention.
satellite laser reflector is an optical device, launched by the ground station to the satellite laser laser pulse is reflected back ground stations, to achieve the distance of the satellite, the accurate measurement of the track. However, generally in the tens of thousands of satellite navigation meters of altitude, distance, laser echo signal is weak and difficult to measure, laser transmitter design, processing and therefore become difficult.
developed by the Shanghai Astronomical Observatory, Chinese Academy of Sciences of the laser reflector, made of quartz glass used with light weight, smaller, stronger and measuring the echo signal high precision, a number of technical indicators are better than the United States, Russia, similar products. From December 2008 onwards, several sets produced by different countries, laser reflectors were installed in the GPS navigation system, Galileo and Compass navigation system, satellite navigation systems tests, carry out performance “Competition.” The results show that China’s Compass Star second test installation of domestic laser reflector, the return signal is significantly stronger than other satellites. (Reporter Zhang Xin Huang Judith correspondent)
Compass II a total of 35 satellites, of which five geostationary, 30 medium-Earth orbit, while the GPS, only There are 24 medium-Earth orbit satellites (not geosynchronous satellite), Big Dipper can be seen a considerable degree of improvement of the second generation. 2009 Big Dipper God, in 2010 China and the Chinese cultural circle surrounding the provision of basic services, an open signal to the world another year, it really shows that China (Beidou) after the United States (GPS), Russian (GLONASS) and the European (Galileo) independently developed after the establishment of a complete national satellite navigation system.
earlier, when China announced the development of their home, “Compass second generation” satellite navigation system will be used for traffic control during the Beijing Olympic Games and complex monitoring, the Europeans by surprise.
China is the EU spent 34 billion euros, “Galileo” satellite navigation project’s most important non-European partners. Beijing will invest 230 million euros in the project, European companies also want to enter the attractive Chinese market, transport and communications.
However, as Chinese officials have hinted, “Compass II” system, the signal will be provided to domestic and other Asian countries, the system will be with the “Galileo “competitive Asian market.
“If China is to launch a civil global satellite positioning system, we will re-evaluate relations with China, we help them break into the market is not interested.” EU Committee responsible for “Galileo” program, said Paul Hoff LAW Yuk. “In a sense, this is competition, and will affect some of their cooperation.”
China first participated in 2003, “Galileo” program, was important the EU considers China an emerging economic power. “When we sign the agreement with China, the impact is not clear in the future.” Wohuo Fu said, “We soon realized that if allowed to co-financing, will face the complexity of the co-ownership discussions.”
“is now very clear, ‘Galileo’ system is the sole owner of Europe, we need to reach another agreement.”
EU officials acknowledged that China is being treated as a junior partner unhappy. But also say China would like to join the newly revived the “Galileo” program. In the EU took over the “Galileo” program funding after less than three weeks, a Chinese delegation arrived in Brussels.
Wohuo Fu said: ‘and’ Galileo ‘political cooperation has been a big thing in China, which is part of EU-China strategic relationship, but also to counter the United States part of the strategic partnership. “
China needs to” Galileo “There are other reasons: its space scientists still can not do the European engineering standards. “Technology transfer is an important consideration,” Wohuo Fu said.
“Galileo” program to stimulate the U.S. and Russia respectively, have been upgraded, “Global Positioning System” and “GLONASS” system. “‘Galileo’ system accuracy for military or intelligence purposes than for commercial purposes.” British Parliament “Galileo” project consultant Richard North said.
Dr North said: “China’s ‘Galileo’ great interest due in part to be the ‘Compass’ system of military technology transfer, which is difficult to stop. “
Because of this, Taiwan and the United States has been pressuring the European Union, asking them to reduce cooperation with China. Brussels Institute of Contemporary China by Jonathan Wales Rugby said: “China’s (‘Compass II’) project is clearly based on European technology, the Chinese people know the technical specifications and standards in Europe, they use it for their own the project. “
Dr. North,” China’s ‘Galileo’ plans to overthrow the so-called co-operation (EU) arms embargo. Obviously, this kinds of satellite navigation technology will increase China’s military power. ”
Beijing now announced the “Big Dipper II” system in 2010 Shanghai World Expo will be held at the fully operational. Thus the system in use during the Olympic Games will be very limited.
in Macao, China’s participation in “Galileo” program where 塞卡洛斯马 Diya Si expert, said: “For the ‘Big Dipper II’ for Olympics The declaration may only be symbolic. laid constellation takes time. “He said that China may be a signal to the EU, which want to be as equal partners in the satellite navigation to treat, not inferior.
EU took over the “Galileo” program funding, the EU Transport Commissioner Jacques, “Barrot said,” is the exclusive navigation symbol of strength. “China certainly will not understand this.
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