Title:
NAVIGATION SATELLITE TIME SYSTEM AND AUTONOMOUS RECOVERY METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/081733
Kind Code:
A1
Abstract:
Provided are a navigation satellite time system and an autonomous recovery method therefor. The system comprises a load time system (10), wherein the load time system (10) is used for generating and maintaining a load time, the load time system (10) comprises a spaceborne atomic clock, a time-frequency processing unit (11) and a plurality of load time backup modules (12, 13,14), time information of the load time is acquired from the ground station time; a second pulse signal of the load time is generated and maintained by the spaceborne atomic clock and the time-frequency processing unit (11); when the time-frequency processing unit (11) has a fault, a first-level recovery state is triggered: the time-frequency processing unit (11) compares the time information and the second pulse signal reversely output by the plurality of load time backup modules (12, 13, 14) to execute the recovery of the load time.
Inventors:
LIN BAOJUN (CN)
GONG WENBIN (CN)
LU XINYING (CN)
SHEN YUAN (CN)
CHEN TINGTING (CN)
REN QIANYI (CN)
DAI YONGSHAN (CN)
YU ZHIYANG (CN)
LI GUANG (CN)
HONG XIA (CN)
TIAN XIAOLI (CN)
GONG WENBIN (CN)
LU XINYING (CN)
SHEN YUAN (CN)
CHEN TINGTING (CN)
REN QIANYI (CN)
DAI YONGSHAN (CN)
YU ZHIYANG (CN)
LI GUANG (CN)
HONG XIA (CN)
TIAN XIAOLI (CN)
Application Number:
PCT/CN2019/113893
Publication Date:
May 06, 2021
Filing Date:
October 29, 2019
Export Citation:
Assignee:
INNOVATION ACADEMY FOR MICROSATELLITES OF CAS (CN)
SHANGHAI ENG CT MICROSATELLITES (CN)
SHANGHAI ENG CT MICROSATELLITES (CN)
International Classes:
G04R20/02
Foreign References:
| CN108540207A | 2018-09-14 | |||
| CN102981402A | 2013-03-20 | |||
| CN105301951A | 2016-02-03 | |||
| JP2007322418A | 2007-12-13 | |||
| CN102291169A | 2011-12-21 |
Other References:
SHUAI, PING: "Studies on Autonomous Navigation Techniques for Navigation Constellations", ENGINEERING SCIENCES, vol. 8, no. 3, 1 March 2006 (2006-03-01), pages 22 - 30, XP055809148
CHE ZHANWU, WANG DONGXIA, HU CAIBO ,TANG YUN: "Research on Key Technologies for Autonomous Time Synchronization for GNSS Navigation Satellite", GEOMATIC SCIENCE AND ENGINEERING, vol. 37, no. 1, 28 February 2017 (2017-02-28), pages 72 - 78, XP009527901, ISSN: 2095-4557
See also references of EP 4053648A4
CHE ZHANWU, WANG DONGXIA, HU CAIBO ,TANG YUN: "Research on Key Technologies for Autonomous Time Synchronization for GNSS Navigation Satellite", GEOMATIC SCIENCE AND ENGINEERING, vol. 37, no. 1, 28 February 2017 (2017-02-28), pages 72 - 78, XP009527901, ISSN: 2095-4557
See also references of EP 4053648A4
Attorney, Agent or Firm:
SHANGHAI ZHI-SHENG INTELLECTUAL PROPERTY OFFICE (CN)
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