Japanese version of the GPS system will be deployed this year by at least three satellites
Data Figure: Japanese H-2A rocket launch satellites
January 21 Xinhua Xinhua Tokyo Japan Aerospace Exploration Agency, published Monday statement said that the Japanese version of the GPS satellite system, known as “quasi-zenith Satellite System “is expected to begin in July and August this year, the deployment of satellite, the system will launch the first satellite was named” guiding “was.
“quasi-zenith satellite system” at least three satellites, these satellites from the ground at about 36,000 km circular orbit speed of a day 1-week run. With satellites in geosynchronous orbit difference is that they have different tracks, and these three orbits with the Earth’s equatorial plane of 45 degrees angle of view is always from the Japanese mainland to stay with a satellite peak near the place where the sky, So the Japanese call “quasi-zenith satellite system.”
Aerospace Exploration Agency, said the agency on October 16, 2009 to December 16 period postcards to the public through the Internet and extensive collection of quasi-zenith satellite’s first name in the received more than 10,000 candidate names, there are 328 of “guiding” was.
communique said, as car navigation systems and a GPS-enabled mobile phones and the growing popularity of satellite navigation has become indispensable to modern society services. However, in some Japanese cities, the skyscrapers, the U.S. GPS satellite positioning accuracy is often poor. Some places in the mountains, to receive the GPS satellite signal is insufficient to locate. Quasi-zenith satellite elevation angle of 60 degrees, with the GPS satellite system with, can effectively reduce the high-rise buildings and mountains and other obstructions, to provide high accuracy location-based services.