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Title:
NAVIGATION SATELLITE SIGNAL RECEIVER AND COLD START METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2016/145947
Kind Code:
A1
Abstract:
A navigation satellite signal receiver and a cold start method therefor. The method comprises: receiving navigation message data of a plurality of satellites, performing bit synchronisation on the navigation message data, and storing the bit-synchronised navigation message data; performing frame synchronisation on the navigation message data, and after finishing frame synchronisation, acquiring a TOW and sub-frame number of a current sub-frame; determining a sub-frame number of a previous sub-frame according to the current sub-frame number, if the sub-frame number of the previous sub-frame is 1, 2 or 3, reversely searching navigation message data of the previous sub-frame to obtain partial ephemeris data, and storing same into an ephemeris storage area; continuously receiving the navigation message data, storing ephemeris data in the navigation message data into the ephemeris storage area, after obtaining complete ephemeris data of a first sub-frame, a second sub-frame and a third sub-frame, decoding the ephemeris data, and acquiring all ephemeris parameters; and after acquiring ephemeris parameters of a pre-set number of satellites, starting to perform positioning. The method achieves quick cold start of a navigation satellite signal receiver.

Inventors:
WANG FENG (CN)
WANG JIARAN (CN)
YUAN LIN (CN)
ZHANG ZHIJIN (CN)
XUE GENGPING (CN)
YANG CHUNMEI (CN)
MEI QI (CN)
LI CHUANMAI (CN)
QIU WENTIAN (CN)
WANG JIN (CN)
QIAN RUIQI (CN)
WEI DONGMING (CN)
LI BOYUAN (CN)
ZHU HAIBO (CN)
LIU LICHENG (CN)
ZHANG GUOHAO (CN)
LIU YIJUN (CN)
Application Number:
PCT/CN2016/072106
Publication Date:
September 22, 2016
Filing Date:
January 26, 2016
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Assignee:
UNIV GUANGDONG TECHNOLOGY (CN)
International Classes:
G01S19/27
Foreign References:
CN104777490A2015-07-15
CN104181557A2014-12-03
CN101216545A2008-07-09
US20120154217A12012-06-21
KR20100105252A2010-09-29
CN103472460A2013-12-25
US20060126762A12006-06-15
JP2000056007A2000-02-25
Attorney, Agent or Firm:
YOGO PATENT & TRADE MARK AGENCY LIMITED COMPANY (CN)
广州粤高专利商标代理有限公司 (CN)
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