Title:
METHOD FOR UNIFYING TIME IN WIDE AREA OF SPACE, SPACE TIME-KEEPING SYSTEM, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2022/001458
Kind Code:
A1
Abstract:
A method for unifying a time in a wide area of space, and a space time-keeping system. The method comprises: establishing a wide-area inertial coordinate system, wherein the wide-area inertial coordinate system comprises all local area coordinate systems within a space range covered by a unified time (S101); obtaining an original local time, and establishing a local orbital parameter ephemeris by using the original local time as a time independent variable (S102); observing a pulse profile of a pulsar according to the original local time, and determining a local pulse time, wherein the local pulse time is a coordinate time when a pulse of the pulsar arrives at a local moment (S103); and converting the local pulse time by using the local orbital parameter ephemeris, so as to obtain a pulse origin time, wherein the pulse origin time is a coordinate time at which the pulse arrives at the origin of the wide-area inertial coordinate system (S104). The method for unifying a time in a wide area of space and the space time-keeping system are applicable to other celestial bodies other than the earth and spacecrafts, and meet the requirement of independently measuring a time without relying on a time service signal on the earth.
Inventors:
LIU MIN (CN)
Application Number:
PCT/CN2021/094770
Publication Date:
January 06, 2022
Filing Date:
May 20, 2021
Export Citation:
Assignee:
BEIJING ORIENTAL INST OF MEASUREMENT AND TEST (CN)
International Classes:
G04G7/00
Foreign References:
| CN111665709A | 2020-09-15 | |||
| CN102759885A | 2012-10-31 | |||
| CN104848862A | 2015-08-19 | |||
| CN109001972A | 2018-12-14 | |||
| CN110780583A | 2020-02-11 | |||
| JP2004191351A | 2004-07-08 | |||
| US20190332067A1 | 2019-10-31 |
Other References:
LIU, MIN ET AL.: "Time Unit and Time Measurement in Space Metrology", JOURNAL OF ELECTRONIC MEASUREMENT AND INSTRUMENTATION, vol. 30, no. 8, 31 August 2016 (2016-08-31), pages 1137 - 1143, XP055883496, ISSN: 1000-7105
Attorney, Agent or Firm:
BEIJING SHINING-IP FIRM (CN)
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