CN101969690B - Method and device for transferring time by utilizing navigational satellite - Google Patents
Method and device for transferring time by utilizing navigational satellite Download PDFInfo
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- CN101969690B CN101969690B CN201010501117.XA CN201010501117A CN101969690B CN 101969690 B CN101969690 B CN 101969690B CN 201010501117 A CN201010501117 A CN 201010501117A CN 101969690 B CN101969690 B CN 101969690B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 11
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention provides a method for transferring time by utilizing a navigational satellite, comprising the following steps: capturing and tracking a navigational satellite; obtaining the transmission time T1 of the navigation message of the navigational satellite; synchronizing the transmission time T1 with the local time T2; obtaining the running time T3 of the navigation system of the navigational satellite; obtaining the corrected parameter UTCp of the world standard time; and outputting the time stamp of the time transfer time T4 and the UTC time information corresponding to T4. The technical scheme of the invention solves the following problems: the position of the receiver can not be obtained in advance, and time transfer can not be carried out and the time for time transfer through positioning calculation is long when the satellite signal condition can not meet the requirement of positioning calculation. The invention is suitable for various satellite navigation systems such as GPS, Beidou I navigational satellites, Beidou II navigational satellites, GLONASS, GALILEO, etc. Besides, the invention is also suitable for dual-mode/multi-mode satellite navigation systems and dual-mode/multi-mode mixed satellite navigation systems.
Description
Technical field
The present invention relates to a kind of method and device that carries out time service using satellite navigation system as time source.
Background technology
Existing method of carrying out time service based on navigation satellite is all that distance and then the conversion navigation signal propagation delay time by calculating between satellite and receiver carried out time synchronized.Therefore must be by pre-entering or positioning calculation is determined receiver location; In the time can not obtaining in advance receiver location and satellite-signal condition and not meeting positioning calculation requirement (positioning calculation needs more than 4 satellite), cannot time service; In the time that satellite-signal condition meets positioning calculation requirement, can carry out time service by positioning calculation, but because positioning calculation needs the regular hour, therefore the needed time of time service is relatively very long.
Therefore, when not paying close attention to positional information and not being high especially to time service precision requirement, but time service required time is required when stricter, existing time service method can not meet the demands.For example, electric power time service, the Big Dipper peculiar to vessel 1 time service application, etc., these all belong to non-high accuracy time service application scenario, do not pay close attention to position, do not need very high time precision, but have strict requirement for reducing power consumption to obtaining time synchronized required time, existing time service method is difficult to meet its requirement to time service time and low-power consumption.
Summary of the invention
The object of this invention is to provide a kind of method and device that can use single navigation satellite to carry out quick time service.
The present invention is achieved in that a kind of method of utilizing navigation satellite to carry out time service, and described method comprises, catches and follow the tracks of a navigation satellite; Obtain the transmitting time T1 of the navigation message of described navigation satellite; Synchronous local zone time T2; Obtain the navigation system running time T 3 of described navigation satellite; Obtain universal time corrected parameter UTCp; Time tag and the corresponding UTC temporal information of T4 of output time service moment T4.
Further, described navigation satellite is gps satellite, Big Dipper generation navigation satellite, the Big Dipper two generations navigation satellite, GLONASS satellite or GALILEO satellite.
Further, T1=TOW in GPS, COMPASS, GALILEO system; T1=TOD in GLONASS system.
Further, described T2=T1+Tc, wherein, Tc is the text propagation time of estimating to ground distance according to the height of satellite orbit.
Further, described Tc=(to ground maximum transmission time+to ground minimum transmission time)/2.
Further, T3=WN × 604800 second in GPS, COMPASS, GALILEO system; T3=DN × 86400 second in GLONASS system.
The present invention also provides a kind of time service device that utilizes navigation satellite to carry out time service, and described device comprises time service method recited above.
Further, described device is dual-mode/multi-mode navigation satellite time service device or dual-mode/multi-mode hybrid navigation satellite time transfer device.
Adopt after technical scheme of the present invention, solve and can not obtain in advance receiver location, and when satellite-signal condition does not meet positioning calculation requirement, can not time service and carry out the long problem of time service required time by positioning calculation, be conducive to reduce the power consumption of system applies, and provide effective solution for the non-precise synchronization system of not paying close attention to positional information and time service precision.The present invention is applicable to multiple satellite navigation system, as: the satellite navigation systems such as GPS, Big Dipper generation navigation satellite, the Big Dipper two generations navigation satellite, GLONASS, GALILEO.In addition, the present invention is also applicable to dual-mode/multi-mode satellite navigation system and dual-mode/multi-mode mixed satellite navigation system.
Brief description of the drawings
Fig. 1 is basic handling flow process of the present invention;
Fig. 2 is the longest and short transmission of navigation signal path schematic diagram.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 is basic handling flow process of the present invention.
Step S101: system is caught and followed the tracks of the navigation satellite signal that may exist.The present invention is applicable to multiple satellite navigation system, as: the satellite navigation systems such as GPS, Big Dipper generation navigation satellite, the Big Dipper two generations navigation satellite, GLONASS, GALILEO.In addition, the present invention is also applicable to dual-mode/multi-mode satellite navigation system and dual-mode/multi-mode mixed satellite navigation system.Therefore the navigational satellite system that, time dissemination system is supported according to system is caught and is followed the tracks of navigation satellite signal.
Step S102: the transmitting time T1 that obtains navigation message.In GPS, COMPASS, GALILEO system, transmitting time is expressed as second (TOW) in week, T1=TOW; In GLONASS system, transmitting time is expressed as second (TOD) in sky, T1=TOD.
Step S103: synchronous local zone time T2.Owing to there is no receiver location information, cannot calculate navigation message propagation time Tc accurately, this method according to the height of dissimilar satellite orbit to the difference of ground distance estimate text propagation time Tc=(to ground maximum transmission time+to minimum transmission time)/2; Therefore, T2=T1+Tc.Fig. 2 is the longest and short transmission of navigation signal path schematic diagram.Due to navigation satellite be known to ground level, so navigation signal is the longest and short transmission path just can be calculated, and navigation signal is the longest and short transmission path is just corresponding to ground maximum transmission time with to ground minimum transmission time.By finding out in Fig. 2: the difference <=earth radius (about 6380km) in the longer transmission of navigation signal path 202 and short transmission path 201; Therefore the time service error <=22ms(earth radius/light velocity being caused by Tc).
Step S104: obtain navigation system running time T 3.In GPS, COMPASS, GALILEO system, system operation time is expressed as complete cycle number (WN), T3=WN × 604800 second; In GLONASS system, system operation time is expressed as number of days (DN), T3=DN × 86400 second.
Step S105: obtain universal time UTC(coordinated universal time, the Coordinated Universal Time(UTC)) corrected parameter UTCp.This parameter directly obtains from navigation message.
Step S106: the time tag of output time service moment T4, and UTC temporal information corresponding to T4: T4=T2+T3+UTCp, completes time service.
Time service error main in this method is from the Tc in step S103.
This method is applicable to most non-high accuracy time dissemination systems.
The present invention is applicable to multiple satellite navigation system, as: the satellite navigation systems such as GPS, Big Dipper generation navigation satellite, the Big Dipper two generations navigation satellite, GLONASS, GALILEO.In addition, the present invention is also applicable to dual-mode/multi-mode satellite navigation system and dual-mode/multi-mode mixed satellite navigation system.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. utilize navigation satellite to carry out a method for time service, it is characterized in that, described method comprises, catches and follow the tracks of a navigation satellite; Obtain the transmitting time T1 of the navigation message of described navigation satellite; Synchronous local zone time T2, described T2=T1+Tc, wherein, Tc is the text propagation time of estimating to ground distance according to the height of satellite orbit, described Tc=(to ground maximum transmission time+to minimum transmission time)/2; Obtain the navigation system running time T 3 of described navigation satellite; Obtain universal time corrected parameter UTCp; Time tag and the corresponding UTC temporal information of T4 of output time service moment T4.
2. time service method as claimed in claim 1, is characterized in that, described navigation satellite is gps satellite, Big Dipper generation navigation satellite, the Big Dipper two generations navigation satellite, GLONASS satellite or GALILEO satellite.
3. time service method as claimed in claim 2, is characterized in that, T1=TOW in GPS, COMPASS, GALILEO system; T1=TOD in GLONASS system, wherein, TOW is second in the week in GPS, COMPASS, GALILEO system, TOD is second in the sky in GPS, COMPASS, GALILEO system.
4. the time service method as described in any one in claims 1 to 3, is characterized in that, T3=WN × 604800 second in GPS, COMPASS, GALILEO system; T3=DN × 86400 second in GLONASS system, wherein, WN is the complete cycle number of system operation time in GPS, COMPASS, GALILEO system, DN is the number of days of system operation time in GPS, COMPASS, GALILEO system.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010501117.XA CN101969690B (en) | 2010-10-09 | 2010-10-09 | Method and device for transferring time by utilizing navigational satellite |
| PCT/CN2011/080031 WO2012045261A1 (en) | 2010-10-09 | 2011-09-22 | Timing time service method and device using a navigational satellite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010501117.XA CN101969690B (en) | 2010-10-09 | 2010-10-09 | Method and device for transferring time by utilizing navigational satellite |
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| Publication Number | Publication Date |
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| CN101969690A CN101969690A (en) | 2011-02-09 |
| CN101969690B true CN101969690B (en) | 2014-08-20 |
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| CN201010501117.XA Active CN101969690B (en) | 2010-10-09 | 2010-10-09 | Method and device for transferring time by utilizing navigational satellite |
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| CN (1) | CN101969690B (en) |
| WO (1) | WO2012045261A1 (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969690B (en) * | 2010-10-09 | 2014-08-20 | 东莞市泰斗微电子科技有限公司 | Method and device for transferring time by utilizing navigational satellite |
| CN102354101A (en) * | 2011-08-17 | 2012-02-15 | 东莞市泰斗微电子科技有限公司 | Time service method and device using navigational satellite |
| CN102566412A (en) * | 2011-12-09 | 2012-07-11 | 东莞市泰斗微电子科技有限公司 | Satellite navigation time service equipment |
| CN103033828B (en) * | 2012-12-14 | 2015-02-04 | 北京东方联星科技有限公司 | High-sensitivity compass-assisted time servicing device, time service receiver and time service method |
| CN106093971B (en) * | 2016-08-01 | 2019-01-22 | 深圳市星芯趋势科技有限责任公司 | Beidou and GPS signal converter |
| JP7155832B2 (en) * | 2018-10-01 | 2022-10-19 | カシオ計算機株式会社 | Clock, time change control method and program |
| CN111190344B (en) * | 2018-11-15 | 2022-01-11 | 北京自动化控制设备研究所 | Design method of satellite navigation military code time service equipment |
| CN111381265B (en) * | 2018-12-29 | 2022-07-29 | 泰斗微电子科技有限公司 | Positioning resolving method and device and satellite navigation receiver |
| CN109471138B (en) * | 2019-01-11 | 2023-01-31 | 西安雷擎电子科技有限公司 | Method for synthesizing multimode satellite navigation signal |
| CN111523093A (en) * | 2020-03-20 | 2020-08-11 | 北京元心科技有限公司 | Software license validity checking method and system and corresponding computer equipment |
| CN113176973B (en) * | 2021-05-14 | 2023-04-25 | 山东英信计算机技术有限公司 | PSU power supply black box log time stamp recording method, device, equipment and medium |
| CN113329341A (en) * | 2021-06-09 | 2021-08-31 | 黑芝麻智能科技(上海)有限公司 | Global navigation satellite system time synchronization method, device, equipment and storage medium |
| CN113960918B (en) * | 2021-09-18 | 2023-08-15 | 杭州中科微电子有限公司 | Single-line time service and time keeping method based on global satellite navigation system GNSS |
| CN114019782B (en) * | 2022-01-06 | 2022-04-12 | 智道网联科技(北京)有限公司 | Method and device for taming navigation satellite clock of automatic driving domain controller |
| CN114706105B (en) * | 2022-06-07 | 2022-08-23 | 尚禹河北电子科技股份有限公司 | Method, device and system for capturing long-wave guide Beidou authorized signal |
| CN115390110A (en) * | 2022-07-29 | 2022-11-25 | 同济大学 | Method for increasing update interval of Beidou real-time satellite clock error service parameters |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1874542A (en) * | 2005-05-31 | 2006-12-06 | 华为技术有限公司 | Time transmission method by using wireless network of supporting assistant GPS function |
| CN101410725A (en) * | 2005-12-29 | 2009-04-15 | SiRF技术公司 | An unassisted indoor GPS receiver |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101430372B (en) * | 2007-11-07 | 2011-12-07 | 中国科学院微电子研究所 | Low-cost time service and synchronization method and equipment for global positioning system receiver |
| CN101969690B (en) * | 2010-10-09 | 2014-08-20 | 东莞市泰斗微电子科技有限公司 | Method and device for transferring time by utilizing navigational satellite |
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- 2010-10-09 CN CN201010501117.XA patent/CN101969690B/en active Active
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1874542A (en) * | 2005-05-31 | 2006-12-06 | 华为技术有限公司 | Time transmission method by using wireless network of supporting assistant GPS function |
| CN101410725A (en) * | 2005-12-29 | 2009-04-15 | SiRF技术公司 | An unassisted indoor GPS receiver |
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| WO2012045261A1 (en) | 2012-04-12 |
| CN101969690A (en) | 2011-02-09 |
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Address after: 510663 Guangzhou science and Technology Development Zone, Guangdong, Cai Cai Cai road, room A701, No. 11 Patentee after: TECHTOTOP MICROELECTRONICS CO.LTD Address before: Two road 523808 in Guangdong province Dongguan City Songshan Lake high tech Industrial Development Zone, No. 17, room A411 A410 headquarters Patentee before: TECHTOTOP MICROELECTRONICS CO.LTD |
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Inventor after: Xie Shengli Inventor after: Xia Liang Inventor after: Wu Jinshi Inventor after: Zeng Yi Inventor after: Xu Xiangbin Inventor before: Xia Liang Inventor before: Zeng Yi Inventor before: Xu Xiangbin |
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Effective date of registration: 20190110 Address after: 610041 No. 501, Building No. 200 Tianquan Road, Chengdu High-tech Zone, Sichuan Province Patentee after: Chengdu Precision Time-Space Technology Co., Ltd. Address before: Room A701, No. 11, Color Frequency Road, Science City, Guangzhou High-tech Development Zone, Guangdong Province Patentee before: TECHTOTOP MICROELECTRONICS CO.LTD |