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Japan’s QZS-2 Launched Seeking For Higher GPS

The Japan’s thirty-fourth H-IIA rocket launched the Quasi-Zenith Satellite System, Michibiki No.2, from the Tanegashima Space Centre on schedule at 9:17 on June 1. The rocket successfully orbited under the way. The satellite will operate as GPS, is also expected to consist of four satellites to operate GPS starting from the next year. Three operate revolve geosynchronous orbits and one does in a geostationary orbit. 


GPS satellite had a technical problem to navigate accurately because of the jamming in the tall building complexes. Compared to preceding technique of GPS, Quasi-Zenith Satellite System, Michibiki enables to operate more accurate GPS because it orbits in a particularly calculated oval orbital.

Quasi-Zenith Satellite System is expected to consist of four satellites to operate GPS starting from the next year, including No.1 which has already been on under the way since 2012. Three operate as geosynchronous orbits and one does as a geostationary orbit. Another three satellites will be launched in the next 6 years, expecting to increase an accuracy of GPS whose error will be within six centimetres.

High-accurate GPS will improve a variety of development of the navigation system including effective agricultural technique, and the drone technology which is expected to be helpful in the post-disaster.

In order to avoid the U.S regulates the use of GPS which will cause a serious technological problem, other countries including Japan are required to develop their own satellite system. Japan started operating Michibiki project from 2014. 


H-IIA rocket has continuously been launching 28 satellites.



Quasi-Zenith Satellite System, Michibiki: Japan’s state-owned satellite system is designed to levitate over Japan on the calculated orbit for 8 hours per day, which send the radio wave accurately to the ground without blocked by the obstacles. Three satellites cost 55,7 billion yen, and 34,2 billion yen to launch them. No.3 with safety confirmation system is designed to revolve in the geostationary orbit.

 Reference
Nasapaceflight.com 
産経新聞: みちびき２号機、打ち上げ成功
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