IP Library Granted Patent US 11,537,086
Granted Patent B2
US 11,537,086 · App. 16/397,687 · Granted Dec 27, 2022

Pulsar based timing synchronization method and system

Inventors: Jiecheng Zhao (Knoxville, TN); Yilu Liu (Knoxville, TN); Yong Liu (Knoxville, TN); Peter Louis Fuhr (Knoxville, TN); Tom King (Knoxville, TN); He Yin (Knoxville, TN); Lingwei Zhan (Knoxville, TN); Marissa Morales-Rodriguez (Knoxville, TN); Wenxuan Yao (Knoxville, TN)
Assignees: University of Tennessee Research Foundation; UT-Battelle, LLC
G04G7/00G04F5/00
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Quick Facts
Patent No.
US 11,537,086
App. No.
16/397,687
Granted
Dec 27, 2022
Kind
B2
Abstract

A pulsar based timing synchronization method and system are disclosed. In one example, a method includes receiving, by a pulsar signal receiver device, a pulse signal emitted from one or more celestial objects and processing, by the pulsar signal receiver device, the pulse signal to discipline a local clock to determine an accurate time output. The method also includes generating, by the pulsar signal receiver device, a timing synchronization signal based on the determined accurate time output. The method further includes providing, by the pulsar signal receiver device, the timing synchronization signal to at least one of a local power system device and a timing distribution network server.

Claims (24)

1. A method comprising:

receiving, by a pulsar signal receiver device, a pulse signal emitted from one or more celestial objects;

processing, by the pulsar signal receiver device, the pulse signal to discipline a local clock to determine an accurate time output;

generating, by the pulsar signal receiver device, a timing synchronization signal based on the determined accurate time output, wherein the pulsar signal receiver device further includes a timing interface configured to convert the accurate time output into the timing synchronization signal that includes a predefined driving capability, voltage level, format, and level of accuracy; and

providing, by the pulsar signal receiver device, the timing synchronization signal to at least one of a local power system device and a timing distribution network server.

2. The method of claim 1 further comprising distributing, by the time distribution network server, the timing synchronization signal to one or more remote power system devices.

3. The method of claim 2 wherein at least one of the local power system device and the remote power system devices utilizes the timing synchronization signal to conduct power system synchronous monitoring, protection, and/or control functions.

4. The method of claim 1 wherein the one or more celestial objects include a plurality of pulsars or a pulsar timing array (PTA).

5. The method of claim 1 wherein the pulsar signal receiver device includes a time residual correction module configured to correct a timing error that is associated with the pulse signal and is attributed to interstellar medium dispersion, ionospheric effects, and tropospheric effects.

6. The method of claim 5 wherein the local clock is disciplined by a signal processor in the pulsar signal receiver device and corrected by the time residual correction module.

7. The method of claim 1 wherein the timing synchronization signal is generated by the local clock or a timing interface module in the pulsar signal receiver device.

8. The method of claim 1 wherein the pulsar signal receiver device further comprises a bandpass filter configured to extract a desired frequency spectrum of the pulse signal and a signal amplifier configured to amplify the pulse signal in the desired frequency spectrum.

9. The method of claim 1 wherein the time distribution network server is a precision timing protocol (PTP) server or an eLoran server.

10. A system comprising:

a timing distribution network server that is communicatively connected to a plurality of remote power system devices; and

a pulsar signal receiver device configured to receive a pulse signal emitted from one or more celestial objects, process the pulse signal to discipline a local clock to determine an accurate time output, generate a timing synchronization signal based on the determined accurate time output, and to provide the timing synchronization signal to the timing distribution network server, wherein the pulsar signal receiver device further includes a timing interface configured to convert the accurate time output into the timing synchronization signal that includes a predefined driving capability, voltage level, format, and level of accuracy.

11. The system of claim 10 wherein the time distribution network server is configured to distribute the timing synchronization signal to one or more remote power system devices.

12. The system of claim 11 wherein the pulsar signal receiver device is configured to provide the timing synchronization signal to at least one local power system device.

13. The system of claim 12 wherein each of the at least one local power system device and the remote power system devices utilizes the timing synchronization signal to conduct power system synchronous monitoring, protection, and/or control functions.

14. The system of claim 10 wherein the one or more celestial objects include a plurality of pulsars or a pulsar timing array (PTA).

15. The system of claim 10 wherein the pulsar signal receiver device includes a time residual correction module configured to correct a timing error that is associated with the pulse signal and is attributed to interstellar medium dispersion, ionospheric effects, and tropospheric effects.

16. The system of claim 15 wherein the local clock is disciplined by a signal processor in the pulsar signal receiver device and corrected by the time residual correction module.

17. The system of claim 10 wherein the timing synchronization signal is generated by the local clock or a timing interface module in the pulsar signal receiver device.

18. The system of claim 10 wherein the pulsar signal receiver device further comprises a bandpass filter configured to extract a desired frequency spectrum of the pulse signal and a signal amplifier configured to amplify the pulse signal in the desired frequency spectrum.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 17, 2019
From: ZHAO, JIECHENG; LIU, YILU; LIU, YONG; KING, TOM; YIN, HE
To: UNIVERSITY OF TENNESSEE RESEARCH FOUNDATION
Reel/Frame 049778/0324 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 17, 2019
From: FUHR, PETER LOUIS; ZHAN, LINGWEI; MORALES-RODRIGUEZ, MARISSA; YAO, WENXUAN
To: UT-BATTELLE, LLC
Reel/Frame 049778/0697 →
CONFIRMATORY LICENSE Recorded May 22, 2019
From: UNIVERSITY OF TENNESSEE SYSTEM
To: NATIONAL SCIENCE FOUNDATION
Reel/Frame 049250/0166 →
Continuity (2)
Provisional Application 62663680 · Apr 27, 2018
Related Publication 20190332067A1 · Oct 31, 2019