Global Navigation Satellite Systems is the significant means to get the information of position and time. Since 1985 China has been working on the theoretical research and technical test its own navigation satellite system. According to the development and actual situation of national economic, this system is planned to be established in three steps or phases: demonstrational system, regional system and global system. The system is named as BeiDou, the BeiDou Navigation Satellite System is abbreviated to BDS (BeiDou). On December 27, 2012, the official signal-in-space Interface Control Documents (ICD) for BDS Open Services was released. The regional system is officially announced to provide positioning and navigation and timing services over the Asia-pacific region. The second phase of the construction plan of China BeiDou satellite navigation system is accomplished. The constellation of BeiDou regional system includes five Geostationary Earth Orbit (GEO) satellites, five Inclined Geosynchronous Earth Orbit (IGSO) satellites and four Median Earth Orbit (MEO) satellites.
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|Affiliation of speaker||Иркутский национальный исследовательский технический университет|