CN105182733A - Precision improvement method and system for Beidou time service synchronization - Google Patents
Precision improvement method and system for Beidou time service synchronization Download PDFInfo
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- CN105182733A CN105182733A CN201510481809.5A CN201510481809A CN105182733A CN 105182733 A CN105182733 A CN 105182733A CN 201510481809 A CN201510481809 A CN 201510481809A CN 105182733 A CN105182733 A CN 105182733A
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Abstract
The invention relates to the technical field of the Beidou navigation system, especially to a precision improvement method for Beidou time service synchronization. The method comprises the following steps: S101, updating time service information; S102, carrying out processing on the time service information; S103, adjusting precision of the time service information; and S104, feeding back the time service information precision. In addition, the invention also provides a orecision improvement system for Beidou time service synchronization. The system is characterized in that the system includes a Beidou receiver and a Beidou terminal. The Beidou receiver is connected with an atomic clock; the Beidou receiver is in communication connection with the Beidou terminal by a Beidou satellite; and the Beidou terminal is connected with a precision adjusting unit. With the method and system, the Beidou receiver sends precise time service information of the atomic clock to the Beidou terminal by the Beidou satellite; the Beidou terminal compares time of a timer with the precise time service; and the working frequency of the chip is adjusted to realize consistency of the timer time and the atomic clock time, thereby realizing precision improvement of the time service synchronization.
Description
Technical field
The present invention relates to a kind of triones navigation system technical field, the precision improvement method and system that particularly a kind of Big Dipper time service is synchronous.
Background technology
The modernization one being entered to information society was beaten, and navigator fix and time dissemination system are most important and are one of the national basis facility of most critical.Modern weapons experiment, war need it to ensure, the foundation of intelligent traffic transportation system and the realization of the digitizing earth need it to support.Modern communication networks and power network construction also more and more enhance the dependence to Precision Time and frequency.Consider from the large chest Engineering Overall setting up a modern country, navigator fix and time dissemination system are the bases on basis.
Chinese utility model patent CN202929373U discloses the seamless high precision time dissemination system of a kind of Big Dipper, and it is primarily of big-dipper satellite, user's receiving terminal, pseudo satellite, pseudolite station and at least 3 pseudo satellite, pseudolite secondary station compositions; Pseudo satellite, pseudolite main website and at least 3 pseudo satellite, pseudolite secondary station are fixedly mounted on the diverse location place of control respectively; Pseudo satellite, pseudolite main website receives the signal that at least 4 big-dipper satellites are sent simultaneously; Pseudo satellite, pseudolite secondary station receives the signal that pseudo satellite, pseudolite main website sends; User's receiving terminal receives the signal that pseudo satellite, pseudolite main website and at least 3 pseudo satellite, pseudolite secondary station and big-dipper satellite send simultaneously.
Summary of the invention
The precision improvement method and system that the technical issues that need to address of the present invention provide a kind of Big Dipper time service synchronous.
For solving above-mentioned technical matters, the precision improvement method that a kind of Big Dipper time service of the present invention is synchronous, comprises the following steps,
Step S101: time service information upgrade, Beidou receiver discontinuity by the time of atomic clock by satellite transmission to Big Dipper terminating machine;
Step S102: time service information process, the time service information received is added process with the elapsed time that communicates and obtains current precise time by Big Dipper terminating machine;
Step S103: time service information precision adjusts, the time service information after process is sent to controller by Big Dipper terminating machine, and this time service information and timer compare by controller, then by chip frequency adjustment unit adjustment timer chip frequency of operation;
Step S104: time service precision feeds back, the time service information after adjustment is fed back to controller by timer, and whether the time service information after controller adjustment is identical with the time service information received, and if so, then terminates; If not, then step S103 is returned.
Further, the time service information after adjustment is fed back to controller by described step S104 Timer after proportional integral adjustment unit.
The present invention also comprises the synchronous precision improvement system of a kind of Big Dipper time service, comprise Beidou receiver and Big Dipper terminating machine, described Beidou receiver is connected with atomic clock, described Beidou receiver is communicated to connect by big-dipper satellite and Big Dipper terminating machine, and described Big Dipper terminating machine is connected with precision adjustment unit.
Further, described precision adjustment unit comprises controller and timer, and described controller is connected with Big Dipper terminating machine, and described Big Dipper terminating machine output terminal is connected with timer by chip frequency adjustment unit, and described timer is connected with controller.
Further, proportional integral adjustment unit is connected with between described timer and controller.
After adopting said method and system, the precision time service of atomic clock is sent to Big Dipper terminating machine by big-dipper satellite by Beidou receiver of the present invention, the time of timer and precision time service contrast by Big Dipper terminating machine, then make timer periods consistent with atomic time by adjustment working frequency of chip, thus realize the synchronous precision improvement of time service.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Fig. 1 is the synchronous precision improvement method of Big Dipper time service of the present invention.
Fig. 2 is the synchronous precision improvement system of Big Dipper time service of the present invention.
In figure: 1 is Beidou receiver, 2 is atomic clock, and 3 is big-dipper satellite, and 4 is Big Dipper terminating machine, and 5 is precision adjustment unit, and 501 is controller, and 502 is chip frequency adjustment unit, and 503 is timer, and 504 is proportional integral adjustment unit
Embodiment
As shown in Figure 1, the precision improvement method that a kind of Big Dipper time service of the present invention is synchronous, comprises the following steps,
Step S101: time service information upgrade, Beidou receiver discontinuity by the time of atomic clock by satellite transmission to Big Dipper terminating machine;
Step S102: time service information process, the time service information received is added process with the elapsed time that communicates and obtains current precise time by Big Dipper terminating machine;
Step S103: time service information precision adjusts, the time service information after process is sent to controller by Big Dipper terminating machine, and this time service information and timer compare by controller, then by chip frequency adjustment unit adjustment timer chip frequency of operation;
Step S104: time service precision feeds back, the time service information after adjustment is fed back to controller by timer, and whether the time service information after controller adjustment is identical with the time service information received, and if so, then terminates; If not, then step S103 is returned.
Further, the time service information after adjustment is fed back to controller by described step S104 Timer after proportional integral adjustment unit.
As shown in Figure 2, the present invention also comprises Beidou receiver 1 and Big Dipper terminating machine 4, described Beidou receiver 1 is connected with atomic clock 2, and described Beidou receiver 1 is communicated to connect by big-dipper satellite 3 and Big Dipper terminating machine 4, and described Big Dipper terminating machine 4 is connected with precision adjustment unit 5.
Further, described precision adjustment unit 5 comprises controller 501 and timer 503, described controller 501 is connected with Big Dipper terminating machine 4, and described Big Dipper terminating machine 4 output terminal is connected with timer 503 by chip frequency adjustment unit 502, and described timer 503 is connected with controller 501.
Further, proportional integral adjustment unit 504 is connected with between described timer 503 and controller 501.
Although the foregoing describe the specific embodiment of the present invention; but those skilled in the art are to be understood that; these only illustrate; various changes or modifications can be made to present embodiment; and not deviating from principle and the essence of invention, protection scope of the present invention is only defined by the appended claims.
Claims (5)
1. the precision improvement method that Big Dipper time service is synchronous, is characterized in that, comprise the following steps,
Step S101: time service information upgrade, Beidou receiver discontinuity by the time of atomic clock by satellite transmission to Big Dipper terminating machine;
Step S102: time service information process, the time service information received is added process with the elapsed time that communicates and obtains current precise time by Big Dipper terminating machine;
Step S103: time service information precision adjusts, the time service information after process is sent to controller by Big Dipper terminating machine, and this time service information and timer compare by controller, then by chip frequency adjustment unit adjustment timer chip frequency of operation;
Step S104: time service precision feeds back, the time service information after adjustment is fed back to controller by timer, and whether the time service information after controller adjustment is identical with the time service information received, and if so, then terminates; If not, then step S103 is returned.
2. according to the precision improvement method that a kind of Big Dipper time service according to claim 1 is synchronous, it is characterized in that: the time service information after adjustment is fed back to controller by described step S104 Timer after proportional integral adjustment unit.
3. according to the precision improvement system that a kind of Big Dipper time service according to claim 1 is synchronous, it is characterized in that: comprise Beidou receiver and Big Dipper terminating machine, described Beidou receiver is connected with atomic clock, described Beidou receiver is communicated to connect by big-dipper satellite and Big Dipper terminating machine, and described Big Dipper terminating machine is connected with precision adjustment unit.
4. according to the precision improvement system that a kind of Big Dipper time service according to claim 3 is synchronous, it is characterized in that: described precision adjustment unit comprises controller and timer, described controller is connected with Big Dipper terminating machine, described Big Dipper terminating machine output terminal is connected with timer by chip frequency adjustment unit, and described timer is connected with controller.
5., according to the precision improvement system that a kind of Big Dipper time service according to claim 4 is synchronous, it is characterized in that: between described timer and controller, be connected with proportional integral adjustment unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510481809.5A CN105182733A (en) | 2015-08-07 | 2015-08-07 | Precision improvement method and system for Beidou time service synchronization |
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| CN201510481809.5A CN105182733A (en) | 2015-08-07 | 2015-08-07 | Precision improvement method and system for Beidou time service synchronization |
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| CN105093248A (en) * | 2015-08-11 | 2015-11-25 | 李�杰 | Beidou satellite navigation technology based inertial navigation system |
| CN109613818A (en) * | 2018-12-29 | 2019-04-12 | 广西电网有限责任公司南宁供电局 | Time service method and system, storage medium and electronic equipment based on big-dipper satellite |
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Application publication date: 20151223 |