CN103684650A - Method, device and system for time synchronization - Google Patents
Method, device and system for time synchronization Download PDFInfo
- Publication number
- CN103684650A CN103684650A CN201310687044.1A CN201310687044A CN103684650A CN 103684650 A CN103684650 A CN 103684650A CN 201310687044 A CN201310687044 A CN 201310687044A CN 103684650 A CN103684650 A CN 103684650A
- Authority
- CN
- China
- Prior art keywords
- signal transmitter
- reference signal
- augmentation
- time
- oscillation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Synchronisation In Digital Transmission Systems (AREA)
- Electric Clocks (AREA)
Abstract
The invention provides a method, device and system for time synchronization. A reference signal transmitter and at least one augmented signal transmitter are arranged in a locating system, then time synchronization between the augmented signal transmitter and a reference signal transmitter is completed, so that in the time synchronization process of the locating system, on the premise that the time synchronization precision of each transmitter is ensured, cost is reduced, and the requirement for large range erection is met.
Description
Technical field
The application relates to location systems art field, particularly relates to a kind of method for synchronizing time, Apparatus and system.
Background technology
Continental rise navigation navigation system is to be moved to earth surface by the signal of satellite launch, with static transmitter overseas broadcast framing signal, and then realizes the location to user.
But, continental rise navigation navigation system is in realizing the process of location, conventionally need to set up the above transmitter of 4 or 4 as the reference signal of positioning calculation, in order to obtain positioning result accurately, need between the above transmitters of these 4 or 4 time strictly synchronous, therefore,, in prior art, the time synchronization problem in continental rise navigation navigation system between each transmitter is the key issue that continental rise navigation navigation system faces.
In order to solve in navigation system the problem of time synchronized between each transmitter, the method for available technology adopting is as follows:
1) use the wired connection modes such as optical fiber or cable to carry out time synchronized, but this mode is only confined to system among a small circle, such as factory building or community, can not reach metropolitan area scope.
2) use atomic clock to carry out time synchronized.Although this method can realize the time synchronized between each transmitter accurately.But atomic clock price is very expensive, and need to regularly carry out time calibrating, operate very loaded down with trivial details.
3) use GNSS(Global Navigation Satellite System, GLONASS (Global Navigation Satellite System)) Timing Receiver is carried out time synchronized, but in this method, GNSS Timing Receiver is easily subject to external environment influence, and its precision only had about 100 nanoseconds.
Therefore, need a kind of method for synchronizing time, Apparatus and system badly, with in realizing the process of navigation system time synchronized, under the timing tracking accuracy prerequisite of each transmitter of assurance, reduce costs, meet the needs that set up on a large scale.
Summary of the invention
In view of this, the embodiment of the present application provides a kind of method for synchronizing time, Apparatus and system, with in realizing the process of navigation system time synchronized, under the timing tracking accuracy prerequisite of each transmitter of assurance, reduces costs, and meets the needs that set up on a large scale.
To achieve these goals, the technical scheme that the embodiment of the present application provides is as follows:
A method for synchronizing time, is applied to a reference signal transmitter and at least one augmentation signal transmitter, comprising:
Described augmentation signal transmitter receives the reference signal that described reference signal transmitter is launched;
Described augmentation signal transmitter obtains frequency of oscillation, positional information and reference signal launch time of the entrained described reference signal transmitter of described reference signal;
According to the frequency of oscillation of described reference signal transmitter, the frequency of oscillation of the numerically-controlled oscillator of described augmentation signal transmitter inside is proofreaied and correct;
The data transmission set of time of described augmentation signal transmitter internal timer is become to identical launch time with described reference signal;
Obtain the positional information of described augmentation signal transmitter self, by reference signal transmitter described in the positional information of described reference signal transmitter and the positional information calculation of described augmentation signal transmitter self, arrive the propagation delay time between described augmentation signal transmitter;
According to described propagation delay time, the current residing time of described augmentation signal transmitter is carried out delay correction, with realize and described reference signal transmitter between time synchronized.
Preferably, reference signal transmitter, to the propagation delay time between described augmentation signal transmitter, comprising described in the positional information calculation of the described positional information by described reference signal transmitter and described augmentation signal transmitter self:
By the distance between reference signal transmitter described in the positional information of described reference signal transmitter and the positional information calculation of described augmentation signal transmitter self and described augmentation signal transmitter;
According to the distance between described reference signal transmitter and described augmentation signal transmitter and the light velocity, calculate described reference signal transmitter to the propagation delay time between described augmentation signal transmitter.
Preferably, describedly according to described propagation delay time, the current residing time of described augmentation signal transmitter is carried out delay correction, comprising:
According to the carrier wavelength of described reference signal transmitter entrained in described propagation delay time, described reference signal, calculate carrier phase offset amount;
The carrier phase offset amount of utilizing described carrier phase offset amount to control oscillator to described augmentation signal transmitter internal digital is proofreaied and correct;
According to described propagation delay time, the data transmission time of described augmentation signal transmitter internal timer is proofreaied and correct;
In the augmentation signal of described augmentation signal transmitter being launched according to described propagation delay time, entrained time marking is proofreaied and correct.
Preferably, described according to the frequency of oscillation of described reference signal transmitter, the frequency of oscillation of the numerically-controlled oscillator of described augmentation signal transmitter inside is proofreaied and correct before, also comprise:
The inner base band of described augmentation signal transmitter is carried out to initialization;
After initialization completes, the numerically-controlled oscillator of described augmentation signal transmitter inside is put number with the frequency of self and is started free oscillation.
Preferably, described augmentation signal transmitter obtains frequency of oscillation, positional information and reference signal launch time of the entrained described reference signal transmitter of described reference signal, comprising:
The frequency of oscillation that described augmentation signal transmitter is followed the tracks of described reference signal transmitter entrained in described reference signal according to self entrained carrier phase-locked loop;
Reference signal described in the demodulation of described augmentation signal transmitter, positional information and reference signal launch time of obtaining described reference signal transmitter entrained in described reference signal.
Preferably, describedly according to the frequency of oscillation of described reference signal transmitter, the frequency of oscillation of the numerically-controlled oscillator of described augmentation signal transmitter inside is proofreaied and correct, comprising:
According to the frequency of oscillation of described reference signal transmitter, the frequency of the numerically-controlled oscillator of described augmentation signal transmitter inside is put to number and adjust, to realize, the frequency of oscillation of the numerically-controlled oscillator of described augmentation signal transmitter inside is proofreaied and correct.
A time synchronism apparatus, comprising: reference signal receiver module, acquisition module, frequency of oscillation correction module, data transmission set of time module, propagation delay time computing module and time delay adjustment module, wherein,
Described reference signal receiver module is for receiving the reference signal that described reference signal transmitter is launched;
Described acquisition module is connected with described reference signal receiver module, for obtaining frequency of oscillation, positional information and reference signal launch time of the entrained described reference signal transmitter of described reference signal;
Described frequency of oscillation correction module is connected with described acquisition module, for the frequency of oscillation of the numerically-controlled oscillator of described augmentation signal transmitter inside being proofreaied and correct according to the frequency of oscillation of described reference signal transmitter;
Data transmission set of time module is connected with described acquisition module, for the data transmission set of time of described augmentation signal transmitter internal timer is become to identical launch time with described reference signal;
Described propagation delay time computing module is connected with described acquisition module, for obtaining the positional information of described augmentation signal transmitter self, by reference signal transmitter described in the positional information of described reference signal transmitter and the positional information calculation of described augmentation signal transmitter self, arrive the propagation delay time between described augmentation signal transmitter;
Time delay adjustment module is connected with described propagation delay time computing module, for according to described propagation delay time, the current residing time of described augmentation signal transmitter being carried out delay correction, with realize and described reference signal transmitter between time synchronized.
Preferably, described propagation delay time computing module comprises: position information acquisition module, distance calculation module and propagation delay time calculating sub module, wherein,
Described position information acquisition module is for obtaining the positional information of described augmentation signal transmitter self;
One end of described distance calculation module is connected with described position information acquisition module, the other end is connected with described acquisition module, for the distance between reference signal transmitter described in the positional information calculation of the positional information by described reference signal transmitter and described augmentation signal transmitter self and described augmentation signal transmitter;
Described propagation delay time calculating sub module is connected with described distance calculation module, for calculating described reference signal transmitter to the propagation delay time between described augmentation signal transmitter according to the distance between described reference signal transmitter and described augmentation signal transmitter and the light velocity.
A clock synchronization system, comprising: a reference signal transmitter and at least one augmentation signal transmitter, and be applied to the time synchronism apparatus as described in claim 7-8 any one in described augmentation signal transmitter.
A clock synchronization system, comprising: at least one clock synchronization system as claimed in claim 9.
The invention provides a kind of method for synchronizing time, Apparatus and system, by set a reference signal transmitter and at least one augmentation signal transmitter in navigation system, then take time of reference signal transmitter is benchmark, complete the time synchronized between augmentation signal transmitter and reference signal transmitter, realized in navigation system time synchronization process, under the timing tracking accuracy prerequisite of each transmitter of assurance, reduce costs, meet the needs that set up on a large scale.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, the accompanying drawing the following describes is only some embodiment that record in the application, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
A kind of method for synchronizing time flow chart that Fig. 1 provides for the embodiment of the present application one;
A kind of time synchronism apparatus structural representation that Fig. 2 provides for the embodiment of the present application two;
A kind of clock synchronization system structural representation that Fig. 3 provides for the embodiment of the present application three.
Embodiment
In order to make those skilled in the art person understand better the technical scheme in the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the application's part embodiment, rather than whole embodiment.Embodiment based in the application, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all should belong to the scope of the application's protection.
Embodiment mono-:
A kind of method for synchronizing time flow chart that Fig. 1 provides for the embodiment of the present application one.
As shown in Figure 1, the method comprises:
S101, augmentation signal transmitter receive the reference signal that reference signal transmitter is launched.
A kind of method for synchronizing time that the embodiment of the present application provides, is applied to a reference signal transmitter and at least one augmentation signal transmitter, in the method, first by augmentation signal transmitter, receives the reference signal that reference signal transmitter is launched.
S102, augmentation signal transmitter obtain frequency of oscillation, positional information and reference signal launch time of the entrained reference signal transmitter of reference signal.
In the embodiment of the present application, augmentation signal transmitter is followed the tracks of the frequency of oscillation of reference signal transmitter entrained in reference signal according to self entrained carrier phase-locked loop, and reference signal is carried out to demodulation, obtain positional information and reference signal launch time of reference signal transmitter entrained in reference signal.
S103, according to the frequency of oscillation of reference signal transmitter, the frequency of oscillation of the numerically-controlled oscillator of augmentation signal transmitter inside is proofreaied and correct.
In the embodiment of the present application, augmentation signal transmitter is according to the frequency of oscillation of reference signal transmitter, the frequency of the numerically-controlled oscillator of augmentation signal transmitter inside is put to number and adjust, to realize, the frequency of oscillation of the numerically-controlled oscillator of augmentation signal transmitter inside is proofreaied and correct.
S104, the data transmission set of time one-tenth of augmentation signal transmitter internal timer is identical launch time with reference signal.
S105, obtain the positional information of augmentation signal transmitter self, by the positional information of reference signal transmitter and the positional information calculation reference signal transmitter of augmentation signal transmitter self to the propagation delay time between augmentation signal transmitter.
In the embodiment of the present application, first obtain the positional information of augmentation signal transmitter self, then by the positional information of reference signal transmitter and the positional information calculation reference signal transmitter of augmentation signal transmitter self and the distance between augmentation signal transmitter, and by the distance calculating, divided by the light velocity, calculate reference signal transmitter to the propagation delay time between augmentation signal transmitter.
S106, according to propagation delay time, the current residing time of augmentation signal transmitter is carried out delay correction, with realize and reference signal transmitter between time synchronized.
In the embodiment of the present application, utilize propagation delay time to proofread and correct the data transmission time of augmentation signal transmitter internal timer; In the augmentation signal of augmentation signal transmitter being launched according to propagation delay time, entrained time marking is proofreaied and correct, and according to the carrier wavelength of reference signal transmitter entrained in propagation delay time, reference signal, calculate carrier phase offset amount, then according to the carrier wave calculating, utilize carrier phase offset amount to realize the correction of augmentation signal transmitter internal digital being controlled to the carrier phase offset amount of oscillator.
Further, in the method for synchronizing time providing in the embodiment of the present application, before the frequency of oscillation of the numerically-controlled oscillator of augmentation signal transmitter inside being proofreaied and correct according to the frequency of oscillation of reference signal transmitter, also comprise:
The inner base band of augmentation signal transmitter is carried out to initialization, and after initialization completes, the numerically-controlled oscillator of augmentation signal transmitter inside is put number with the frequency of self and is started free oscillation.
The invention provides a kind of method for synchronizing time, by set a reference signal transmitter and at least one augmentation signal transmitter in navigation system, then take time of reference signal transmitter is benchmark, complete the time synchronized between augmentation signal transmitter and reference signal transmitter, realized in navigation system time synchronization process, under the timing tracking accuracy prerequisite of each transmitter of assurance, reduce costs, meet the needs that set up on a large scale.
Embodiment bis-:
A kind of time synchronism apparatus structural representation that Fig. 2 provides for the embodiment of the present application two.
As shown in Figure 2, this device comprises: reference signal receiver module 1, acquisition module 2, frequency of oscillation correction module 3, data transmission set of time module 4, propagation delay time computing module 5 and time delay adjustment module 6.
Wherein, the reference signal that reference signal receiver module 1 is launched for receiving reference signal transmitter.
Frequency of oscillation correction module 3 is connected with acquisition module 2, for the frequency of oscillation of the numerically-controlled oscillator of augmentation signal transmitter inside being proofreaied and correct according to the frequency of oscillation of reference signal transmitter.
Data transmission set of time module 4 is connected with acquisition module 2, for the data transmission set of time of augmentation signal transmitter internal timer is become to identical launch time with reference signal.
Propagation delay time computing module 5 is connected with acquisition module 2, for obtaining the positional information of augmentation signal transmitter self, by the positional information of reference signal transmitter and the positional information calculation reference signal transmitter of augmentation signal transmitter self, arrive the propagation delay time between augmentation signal transmitter.
Time delay adjustment module 6 is connected with propagation delay time computing module 5, for according to propagation delay time, the current residing time of augmentation signal transmitter being carried out delay correction, with realize and reference signal transmitter between time synchronized.
Further, the propagation delay time computing module 5 in the time synchronism apparatus that the embodiment of the present application provides comprises: position information acquisition module, distance calculation module and propagation delay time calculating sub module.
Wherein, position information acquisition module is for obtaining the positional information of augmentation signal transmitter self.
One end of distance calculation module is connected with position information acquisition module, the other end is connected with acquisition module 2, for passing through the positional information of reference signal transmitter and the positional information calculation reference signal transmitter of augmentation signal transmitter self and the distance between augmentation signal transmitter.
Propagation delay time calculating sub module is connected with distance calculation module, for calculating reference signal transmitter to the propagation delay time between augmentation signal transmitter according to the distance between reference signal transmitter and augmentation signal transmitter and the light velocity.
In the embodiment of the present application, preferably but be not limited to, the time synchronism apparatus that the application provides can be arranged in augmentation signal transmitter, and inventor can also, according to the position of any setup times synchronizer of demand of oneself, not repeat them here.
The invention provides a kind of time synchronism apparatus, this device comprises: reference signal receiver module, acquisition module, frequency of oscillation correction module, data transmission set of time module, propagation delay time computing module and time delay adjustment module, by this time synchronism apparatus is set in navigation system, it is benchmark that time of a reference signal transmitter is take in realization, complete the process of the time synchronized between augmentation signal transmitter and reference signal transmitter, and then realized in navigation system time synchronization process, guaranteeing under the timing tracking accuracy prerequisite of each transmitter, reduce costs, meet the needs that set up on a large scale.
Embodiment tri-:
A kind of clock synchronization system structural representation that Fig. 3 provides for the embodiment of the present application three.
As shown in Figure 3, this system comprises: a reference signal transmitter and at least one augmentation signal transmitter, and be provided with the time synchronism apparatus as shown in above-described embodiment two in this augmentation signal transmitter.
In the embodiment of the present application, preferably but be not limited to, be provided with a clock synchronization system as shown in Figure 3, inventor can also be according to actual needs, at least one clock synchronization system is as shown in Figure 3 above set, by being that bridge joint between clock synchronization system communicates by each, to form larger clock synchronization system.
The embodiment of the present application provides a kind of clock synchronization system, comprise a reference signal transmitter and at least one augmentation signal transmitter, by take time of a reference signal transmitter, it is benchmark, complete the time synchronized between augmentation signal transmitter and reference signal transmitter, realized in navigation system time synchronization process, under the timing tracking accuracy prerequisite of each transmitter of assurance, reduce costs, meet the needs that set up on a large scale.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.For the disclosed device of embodiment, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part partly illustrates referring to method.
Below be only the application's preferred implementation, make those skilled in the art can understand or realize the application.To the multiple modification of these embodiment, will be apparent to one skilled in the art, General Principle as defined herein can be in the situation that do not depart from the application's spirit or scope, realization in other embodiments.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a method for synchronizing time, is applied to a reference signal transmitter and at least one augmentation signal transmitter, and it is characterized in that, comprising:
Described augmentation signal transmitter receives the reference signal that described reference signal transmitter is launched;
Described augmentation signal transmitter obtains frequency of oscillation, positional information and reference signal launch time of the entrained described reference signal transmitter of described reference signal;
According to the frequency of oscillation of described reference signal transmitter, the frequency of oscillation of the numerically-controlled oscillator of described augmentation signal transmitter inside is proofreaied and correct;
The data transmission set of time of described augmentation signal transmitter internal timer is become to identical launch time with described reference signal;
Obtain the positional information of described augmentation signal transmitter self, by reference signal transmitter described in the positional information of described reference signal transmitter and the positional information calculation of described augmentation signal transmitter self, arrive the propagation delay time between described augmentation signal transmitter;
According to described propagation delay time, the current residing time of described augmentation signal transmitter is carried out delay correction, with realize and described reference signal transmitter between time synchronized.
2. method according to claim 1, it is characterized in that, described in the positional information calculation of the described positional information by described reference signal transmitter and described augmentation signal transmitter self, reference signal transmitter, to the propagation delay time between described augmentation signal transmitter, comprising:
By the distance between reference signal transmitter described in the positional information of described reference signal transmitter and the positional information calculation of described augmentation signal transmitter self and described augmentation signal transmitter;
According to the distance between described reference signal transmitter and described augmentation signal transmitter and the light velocity, calculate described reference signal transmitter to the propagation delay time between described augmentation signal transmitter.
3. method according to claim 1, is characterized in that, describedly according to described propagation delay time, the current residing time of described augmentation signal transmitter is carried out delay correction, and comprising:
According to the carrier wavelength of described reference signal transmitter entrained in described propagation delay time, described reference signal, calculate carrier phase offset amount;
The carrier phase offset amount of utilizing described carrier phase offset amount to control oscillator to described augmentation signal transmitter internal digital is proofreaied and correct;
According to described propagation delay time, the data transmission time of described augmentation signal transmitter internal timer is proofreaied and correct;
In the augmentation signal of described augmentation signal transmitter being launched according to described propagation delay time, entrained time marking is proofreaied and correct.
4. method according to claim 1, is characterized in that, described according to the frequency of oscillation of described reference signal transmitter, the frequency of oscillation of the numerically-controlled oscillator of described augmentation signal transmitter inside is proofreaied and correct before, also comprise:
The inner base band of described augmentation signal transmitter is carried out to initialization;
After initialization completes, the numerically-controlled oscillator of described augmentation signal transmitter inside is put number with the frequency of self and is started free oscillation.
5. method according to claim 1, is characterized in that, described augmentation signal transmitter obtains frequency of oscillation, positional information and reference signal launch time of the entrained described reference signal transmitter of described reference signal, comprising:
The frequency of oscillation that described augmentation signal transmitter is followed the tracks of described reference signal transmitter entrained in described reference signal according to self entrained carrier phase-locked loop;
Reference signal described in the demodulation of described augmentation signal transmitter, positional information and reference signal launch time of obtaining described reference signal transmitter entrained in described reference signal.
6. method according to claim 1, is characterized in that, describedly according to the frequency of oscillation of described reference signal transmitter, the frequency of oscillation of the numerically-controlled oscillator of described augmentation signal transmitter inside is proofreaied and correct, and comprising:
According to the frequency of oscillation of described reference signal transmitter, the frequency of the numerically-controlled oscillator of described augmentation signal transmitter inside is put to number and adjust, to realize, the frequency of oscillation of the numerically-controlled oscillator of described augmentation signal transmitter inside is proofreaied and correct.
7. a time synchronism apparatus, is characterized in that, comprising: reference signal receiver module, acquisition module, frequency of oscillation correction module, data transmission set of time module, propagation delay time computing module and time delay adjustment module, wherein,
Described reference signal receiver module is for receiving the reference signal that described reference signal transmitter is launched;
Described acquisition module is connected with described reference signal receiver module, for obtaining frequency of oscillation, positional information and reference signal launch time of the entrained described reference signal transmitter of described reference signal;
Described frequency of oscillation correction module is connected with described acquisition module, for the frequency of oscillation of the numerically-controlled oscillator of described augmentation signal transmitter inside being proofreaied and correct according to the frequency of oscillation of described reference signal transmitter;
Data transmission set of time module is connected with described acquisition module, for the data transmission set of time of described augmentation signal transmitter internal timer is become to identical launch time with described reference signal;
Described propagation delay time computing module is connected with described acquisition module, for obtaining the positional information of described augmentation signal transmitter self, by reference signal transmitter described in the positional information of described reference signal transmitter and the positional information calculation of described augmentation signal transmitter self, arrive the propagation delay time between described augmentation signal transmitter;
Time delay adjustment module is connected with described propagation delay time computing module, for according to described propagation delay time, the current residing time of described augmentation signal transmitter being carried out delay correction, with realize and described reference signal transmitter between time synchronized.
8. device according to claim 7, is characterized in that, described propagation delay time computing module comprises: position information acquisition module, distance calculation module and propagation delay time calculating sub module, wherein,
Described position information acquisition module is for obtaining the positional information of described augmentation signal transmitter self;
One end of described distance calculation module is connected with described position information acquisition module, the other end is connected with described acquisition module, for the distance between reference signal transmitter described in the positional information calculation of the positional information by described reference signal transmitter and described augmentation signal transmitter self and described augmentation signal transmitter;
Described propagation delay time calculating sub module is connected with described distance calculation module, for calculating described reference signal transmitter to the propagation delay time between described augmentation signal transmitter according to the distance between described reference signal transmitter and described augmentation signal transmitter and the light velocity.
9. a clock synchronization system, is characterized in that, comprising: a reference signal transmitter and at least one augmentation signal transmitter, and be applied to the time synchronism apparatus as described in claim 7-8 any one in described augmentation signal transmitter.
10. a clock synchronization system, is characterized in that, comprising: at least one clock synchronization system as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310687044.1A CN103684650B (en) | 2013-12-13 | 2013-12-13 | A kind of method for synchronizing time, apparatus and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310687044.1A CN103684650B (en) | 2013-12-13 | 2013-12-13 | A kind of method for synchronizing time, apparatus and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103684650A true CN103684650A (en) | 2014-03-26 |
| CN103684650B CN103684650B (en) | 2017-11-03 |
Family
ID=50321069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310687044.1A Expired - Fee Related CN103684650B (en) | 2013-12-13 | 2013-12-13 | A kind of method for synchronizing time, apparatus and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103684650B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105578588A (en) * | 2015-12-17 | 2016-05-11 | 北京无线电计量测试研究所 | Base station synchronizing and positioning method and equipment |
| CN114499641A (en) * | 2022-01-25 | 2022-05-13 | 中国科学院微小卫星创新研究院 | Time delay correction method for satellite remote docking |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1189753A (en) * | 1997-01-31 | 1998-08-05 | 松下电器产业株式会社 | Method and system for locating mobile station |
| CN101036322A (en) * | 2004-08-09 | 2007-09-12 | 艾利森电话股份有限公司 | Uplink synchronization in a radio telecommunication system |
| WO2012142688A1 (en) * | 2011-04-18 | 2012-10-26 | Instituto Presbiteriano Mackenzie | Process and system to determine temporal changes in retransmission and propagation of signals used to measure distances, syncronize actuators and georeference applications |
| CN103647628A (en) * | 2013-11-28 | 2014-03-19 | 陈辉 | A time synchronization method, a time synchronization apparatus, and a time synchronization system |
-
2013
- 2013-12-13 CN CN201310687044.1A patent/CN103684650B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1189753A (en) * | 1997-01-31 | 1998-08-05 | 松下电器产业株式会社 | Method and system for locating mobile station |
| CN101036322A (en) * | 2004-08-09 | 2007-09-12 | 艾利森电话股份有限公司 | Uplink synchronization in a radio telecommunication system |
| WO2012142688A1 (en) * | 2011-04-18 | 2012-10-26 | Instituto Presbiteriano Mackenzie | Process and system to determine temporal changes in retransmission and propagation of signals used to measure distances, syncronize actuators and georeference applications |
| CN103647628A (en) * | 2013-11-28 | 2014-03-19 | 陈辉 | A time synchronization method, a time synchronization apparatus, and a time synchronization system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105578588A (en) * | 2015-12-17 | 2016-05-11 | 北京无线电计量测试研究所 | Base station synchronizing and positioning method and equipment |
| CN114499641A (en) * | 2022-01-25 | 2022-05-13 | 中国科学院微小卫星创新研究院 | Time delay correction method for satellite remote docking |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103684650B (en) | 2017-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107655475B (en) | Synchronous pulse signal acquisition method, navigation data synchronous processing method and system | |
| Shi et al. | Anchor self-localization algorithm based on UWB ranging and inertial measurements | |
| CN110133999B (en) | Time synchronization method and system based on satellite cloud laser point cloud data acquisition platform | |
| JP6283428B2 (en) | Time synchronization apparatus, method and program thereof | |
| CN107395309A (en) | High accuracy relative ranging and method for synchronizing time based on inter-satellite link | |
| JP5056785B2 (en) | Aircraft position measurement system, receiving station, aircraft position measurement method and program | |
| CN108318863B (en) | Submarine beacon-based passive positioning method and system for underwater unmanned equipment | |
| KR20200036735A (en) | Gnss-based multi-modal clock correction | |
| CN101084453A (en) | Transfer of calibrated time information in a mobile terminal | |
| CN109799523A (en) | A kind of celestial combined navigation method, system time synchronization | |
| CN102830611B (en) | Time source | |
| CN105182382A (en) | Centimeter-level positioning method of pseudo satellite | |
| CN111448480B (en) | Positioning system with global navigation satellite system signal generating device and radiation cable | |
| CN103647628A (en) | A time synchronization method, a time synchronization apparatus, and a time synchronization system | |
| CN103309229A (en) | Satellite-to-ground dynamic bidirectional time synchronization and ranging combined algorithm based on fitting method | |
| US10830575B2 (en) | Synchronization method for multi-station data of dynamic coordinate measurement by workshop measuring and positioning network | |
| CN104935391A (en) | Self-closed-loop time synchronization method of indoor pseudo-satellites | |
| US20170295555A1 (en) | Gps time-aiding and frequency correction | |
| CN107305255A (en) | Localization method, positioner and electronic equipment | |
| CN110350998A (en) | High-precision time-frequency synchronization between standing under a kind of high dynamic | |
| CN107679260B (en) | Method for determining satellite time system precision of stationary orbit remote sensing satellite | |
| CN103684650A (en) | Method, device and system for time synchronization | |
| CN104703274A (en) | Method, system and device for wireless positioning of in-band pseudo satellite | |
| CN107483136A (en) | A kind of clock synchronizing method between fixed communication apparatus | |
| CN205384374U (en) | Combination positioner in environment of city |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171103 Termination date: 20201213 |