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Inside GNSS: Engineering Solutions from the Global Navigation Satellite System Community
GPS Galileo Glonass BeiDou Regional/Augmentation
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About BeiDou

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China intends to finish their Beidou Navigation Satellite System (BDS, formerly known in English as "Compass") by 2020. When complete, the constellation will will consist of 35
satellites: 5 geostationary orbit (GEO) satellites, 27 in Medium Earth Orbit (MEO) and 3 in Inclined
Geosynchronous Orbit (IGSO).

BDS began providing services to civilian users in China and surrounding areas in the Asia-Pacific in December 2012. 

In 2015, the system began its transition towards global coverage with the first launch of a new-generation of satellites. BeiDou Phase III includes the migration of its civil Beidou 1 or B1 signal from 1561.098 MHz to a frequency centered at 1575.42 MHz — the
same as the GPS L1 and Galileo E1 civil signals — and its transformation
from a quadrature phase shift keying (QPSK) modulation to a multiplexed
binary offset carrier (MBOC) modulation similar to the future GPS L1C
and Galileo’s E1.

 

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