CN110286580A - A kind of time service method of optical fiber and the punctual synchronous seamless interfacing of wireless time service - Google Patents
A kind of time service method of optical fiber and the punctual synchronous seamless interfacing of wireless time service Download PDFInfo
- Publication number
- CN110286580A CN110286580A CN201910346789.9A CN201910346789A CN110286580A CN 110286580 A CN110286580 A CN 110286580A CN 201910346789 A CN201910346789 A CN 201910346789A CN 110286580 A CN110286580 A CN 110286580A
- Authority
- CN
- China
- Prior art keywords
- time service
- time
- wireless
- optical fiber
- days
- 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
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
- G04R20/02—Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
-
- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
- G04R20/02—Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
- G04R20/04—Tuning or receiving; Circuits therefor
Abstract
The invention discloses the time service methods of a kind of optical fiber and the punctual synchronous seamless interfacing of wireless time service, it is the configuration mobile terminal unified time frequency reference timing equipment on wireless time service object, after the TC node of the backbone network of corresponding high 10 times of the fiber support net network platform of mobile terminal unified time frequency reference timing equipment completes automatic clock synchronization first, then receives the polynary multifrequency of time service information participation that a variety of radio waves pass and regard " common thresholding " altogether than comparison phase；Wireless time service object is ship, vehicle or other moveable carriers；The time service information that a variety of radio waves pass includes space-based/ground rowland-C microwave long wave shortwave.
Description
Technical field
The invention belongs to Time synchronization technique fields, are related to a kind of time service method, especially a kind of optical fiber and wireless time service
The time service method of punctual synchronous seamless interfacing.
Background technique
In the optical fiber transmitting ultraprecise time service of the prior art, 2000km time service has reached < 10ns, multinode 200km
Oneself realizes < ± 1ns, and have passed through the verifying of Tai Er laboratory testing.And national time service center utilizes optical fiber " lock light " time service
1000km < 100ps (from surveying).
And wireless time service situation in the prior art are as follows:
(1) space-based time service GPS/GLONASS/ Beidou/Galileo/GNSS；Time service precision: 10ns~300ns；
(2) the estimated the year two thousand twenty time service precision of U.S.'s third generation GPS satellite navigation system reaches 1ns；
(3) space-based satellite regards altogether :≤5ns；
In addition, there are also microwave time service, shortwave time service, LF/VLF time services.
It is obvious that currently with the level Four unified time frequency reference of the fiber support net network of optical fiber cable architecture construction
The relative stability of the temporal frequency of synchronous net and accuracy are higher than wireless time dissemination system, but wireless time service is to mobile object
The means that must possess, when improving the survey of radio wave by every possible means, punctual, time service and used time precision be current important grind
Study carefully direction.
In the prior art, ship or the wired and wireless synchronous seamless interfacing of other motive objects transmit Service of Timing are as follows:
(such as random variation of measurement wireless multi-path effect), punctual, time service and use when the survey of ship/other motive objects
When, transmits much more complex more than optical fiber, and various random variable noises, complicated Astronomy, Meteorology, human interference etc. are navigated in motive objects
Row, flight etc. are the radio waves that are only completely dependent in space-based come time service and the used time of keeping time when surveying.
In summary, optical fiber transmitting time service and wireless mode time service can be synchronized by being badly in need of one kind in time service field
The time service mode of docking.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of optical fiber is provided and wireless time service is punctual same
Walk the time service method of seamless interfacing.
The purpose of the present invention is achieved through the following technical solutions:
The time service method of this optical fiber and the punctual synchronous seamless interfacing of wireless time service, configures on wireless time service object and moves
Moved end unified time frequency reference timing equipment, corresponding high 10 times of the light of mobile terminal unified time frequency reference timing equipment
After the TC node of the backbone network of the fine supporting network network platform completes automatic clock synchronization first, then receives a variety of radio waves and pass
Time service information participate in polynary multifrequency and regard " common thresholding " altogether than comparing phase；The wireless time service object be ship, vehicle or its
His moveable carrier；The time service information that a variety of radio waves pass includes space-based/ground rowland-C microwave long wave shortwave.
Further, above-mentioned mobile terminal unified time frequency reference timing equipment includes 12 road common-view mode chips or 24 tunnels
Common-view mode chip；And standard configuration slave station clock ePRTC, PRTC, LPRTC, eRTC or RTC.
It is further, above specifically:
Make the wired and wireless broadcast station of ground first with the unified time frequency reference of the fiber support net network platform
The Time and frequency standard synchronization put respectively reaches following according to used time demand:
1) 3000km is pressed in wired and wireless seamless interfacing time service, and 31 or 61 RTC nodes reach:
Relative frequency deviation≤± 5E-14/ days is compared with ePRTC；
And ePRTC compares relative phase deviation≤± 5ns/ days；
With ePRTC comparison time synchronization accuracy≤10ns；
2) when optical fiber transmitting time service precision realizes that 3000km, 31 or 61 RTC nodes reach:
Relative frequency deviation≤± 5E-15/ days is compared with HPRTC；
And HPRTC compares relative phase deviation≤± 500ps/ days, wherein MTIE≤1ns；
With HPRTC comparison time synchronization accuracy≤1ns；
3) after the star-like band-like polynary multifrequency common-view mode fiber support net network platform of honeycomb is built up, each area is all by awarding
Shi Zhongxin eHPRTC is that the RTC node of main website constructs 0 grade of backbone network 3000km, and 31 or 61 RTC nodes reach:
Relative frequency deviation≤± 5.79E-16/ days is compared with eHPRTC；
Relative phase is compared with eHPRTC to deviate≤± 50ps/ days；
With eHPRTC comparison time synchronization accuracy≤100ps；
When mobile ship or vehicle are accurate certainly by round-based fiber optics supporting network network platform TC node as " used time " user
Dynamic clock synchronization, while obtaining split-second precision frequency reference again with space-based Beidou/GPS/GLONASS and TC node surrounding
Multiple platforms transmitting TC nodes with the fully synchronized radio broadcast Time and frequency standard of round-based fiber optics supporting network network when
Between frequency reference form polynary multifrequency and regard common thresholding altogether than the comparison phase network architecture.
Further, the stability and accuracy for setting the Time and frequency standard of eHPRTC clock source group are superior to 1E-16,
I.e. retention property is 300,000,000 years clock sources that are 1 second not poor, and adding three fountain caesium clocks to set up for two light clocks.
Further, the stability and accuracy for setting the Time and frequency standard of HPRTC clock source group are superior to 1E-15, i.e.,
Retention property is 30,000,000 years clock source groups that are 1 second not poor, and adding three caesium clocks to set up for two hydrogen clocks.
Further, ePRTC clock source group adds two caesium clocks with GPS satellite navigation system mutually same hydrogen clock of standard configuration.
Further, the stability and accuracy for setting the Time and frequency standard of ePRTC clock source group are superior to 1E-14 i.e.
Retention property is 300 years 1 second not poor.
Further, above-mentioned PRTC is that a caesium clock adds two rubidium clocks, and the when base ageing rate of PRTC itself is 300,000 years not poor
It 1 second, i.e., when itself is independent, is accumulated as 8.64ns/ days with the drift of UTC absolute time comparison time daily, every drift in 10 seconds
It is accumulated as 1ps, it is per second then there was only 0.1ps；The LRPTC is two rubidium clocks, the when base ageing rate of LRPTC itself be 30,000 years not
It is accumulated as 86.4ns/ days with the drift of UTC absolute time comparison time daily within poor 1 second, every drift in 10 seconds is accumulated as
10ps, each second are then 1ps.
Further, above-mentioned eRTC is two DCXO, 1~2E-11 of ageing rate of the eRTC itself, i.e., exhausted with UTC daily
To time comparison time drift be accumulated as 864.0ns/ days~1728ns/ days, every drift in 10 seconds be accumulated as 100ps~
200ps, each second are then 10ps~20ps；The DCXO is enhanced double thermostat ultralow phase noise output crystal oscillations
Device.
Further, above-mentioned RTC is two VCXO, and the when base ageing rate of the RTC itself is 2~3E-10, i.e., daily with
The drift of UTC absolute time comparison time is accumulated as 17.28 μ of μ s~25.92 s/ days, every drift in 10 seconds be accumulated as 2ns~
3ns, each second are then 200ps~300ps；The VCXO is double thermostat low phase noise output crystal oscillators.
The invention has the following advantages:
Optical fiber of the invention with the time service method of the punctual synchronous seamless interfacing of wireless time service is matched on wireless time service object
Set mobile terminal unified time frequency reference timing equipment, the backbone network of corresponding high 10 times of the fiber support net network platform
After the TC node of network completes automatic clock synchronization first, then receives the polynary multifrequency of time service information participation that a variety of radio waves pass and be total to
, can be with seamless interfacing optical fiber and wireless time service depending on " common thresholding " than comparison phase, the time service information that a variety of radio waves pass includes
Space-based/ground rowland-C microwave long wave shortwave, can be realized ship, vehicle or other moveable carriers (such as aircraft)
High-precision time service.
Detailed description of the invention
Fig. 1 is one of networking schematic diagram of the invention；
Fig. 2 is another networking schematic diagram of the invention.
Specific embodiment
The time service method of optical fiber of the invention and the punctual synchronous seamless interfacing of wireless time service, is on wireless time service object
Mobile terminal unified time frequency reference timing equipment is configured, mobile terminal unified time frequency reference timing equipment is corresponding high by 10
After the TC node of the backbone network of the fiber support net network platform again completes " accurate automatic clock synchronization " first, then receive
The time service information that a variety of radio waves pass participates in polynary multifrequency and regards " common thresholding " altogether than comparison phase；The wireless time service object
For ship, vehicle or other moveable carriers；The time service information that a variety of radio waves pass includes space-based/ground sieve
Orchid-C microwave long wave shortwave.The mobile terminal unified time frequency reference timing equipment selects 12 road common-view mode chips or 24
Road common-view mode chip；And standard configuration slave station clock ePRTC, PRTC, LPRTC, eRTC or RTC.Specifically:
Make the wired and wireless broadcast station of ground first with the unified time frequency reference of the fiber support net network platform
The Time and frequency standard synchronization put respectively reaches following according to used time demand:
1) 3000km is pressed in wired and wireless seamless interfacing time service, and 31 or 61 RTC nodes reach:
Relative frequency deviation≤± 5E-14/ days is compared with ePRTC；
And ePRTC compares relative phase deviation≤± 5ns/ days；
With ePRTC comparison time synchronization accuracy≤10ns；
2) when optical fiber transmitting time service precision realizes that 3000km, 31 or 61 RTC nodes reach:
Relative frequency deviation≤± 5E-15/ days is compared with HPRTC；
And HPRTC compares relative phase deviation≤± 500ps/ days, wherein MTIE≤1ns；
With HPRTC comparison time synchronization accuracy≤1ns；
3) after the star-like band-like polynary multifrequency common-view mode fiber support net network platform of honeycomb is built up, each area is all by awarding
Shi Zhongxin eHPRTC is that the RTC node of main website constructs 0 grade of backbone network 3000km, and 31 or 61 RTC nodes reach:
Relative frequency deviation≤± 5.79E-16/ days is compared with eHPRTC；
Relative phase is compared with eHPRTC to deviate≤± 50ps/ days；
With eHPRTC comparison time synchronization accuracy≤100ps；
When mobile ship or vehicle are accurate certainly by round-based fiber optics supporting network network platform TC node as " used time " user
Dynamic clock synchronization, while obtaining split-second precision frequency reference again with space-based Beidou/GPS/GLONASS and TC node surrounding
Multiple platforms transmitting TC nodes with the fully synchronized radio broadcast Time and frequency standard of round-based fiber optics supporting network network when
Between frequency reference form polynary multifrequency and regard common thresholding altogether than the comparison phase network architecture.
The stability of the Time and frequency standard of the above setting eHPRTC clock source group and accuracy are superior to 1E-16, that is, protect
Holding performance is 300,000,000 years clock sources that are 1 second not poor, and adding three fountain caesium clocks to set up for two light clocks.Set HPRTC clock source
The stability of the Time and frequency standard of group and accuracy are superior to 1E-15, i.e., retention property is 30,000,000 years 1 second not poor, and is
The clock source group that two hydrogen clocks add three caesium clocks to set up.EPRTC clock source group with GPS satellite navigation system standard configuration mutually same
Hydrogen clock adds two caesium clocks.The stability and accuracy for setting the Time and frequency standard of ePRTC clock source group are superior to 1E-14 i.e.
Retention property is 300 years 1 second not poor.
Above PRTC is that a caesium clock adds two rubidium clocks, and the when base ageing rate of PRTC itself is 300,000 years 1 second not poor,
It when i.e. itself is independent, is accumulated as 8.64ns/ days with the drift of UTC absolute time comparison time daily, every accumulation of drift in 10 seconds
It is per second then there was only 0.1ps for 1ps.LRPTC is two rubidium clocks, and the when base ageing rate of LRPTC itself is 30,000 years 1 second not poor
It is accumulated as 86.4ns/ days with the drift of UTC absolute time comparison time daily, every drift in 10 seconds is accumulated as 10ps, per second
Zhong Ze is 1ps.ERTC is two DCXO, 1~2E-11 of ageing rate of the eRTC itself, i.e., daily with UTC absolute time ratio
Time drift is accumulated as 864.0ns/ days~1728ns/ days, every drift in 10 seconds is accumulated as 100ps~200ps, per second
Zhong Ze is 10ps~20ps；The DCXO is enhanced double thermostat ultralow phase noise output crystal oscillators.RTC is two
The when base ageing rate of platform VCXO, the RTC itself are 2~3E-10, i.e., tired with the drift of UTC absolute time comparison time daily
Product is 17.28 μ of μ s~25.92 s/ days, and every drift in 10 seconds is accumulated as 2ns~3ns, and each second is then 200ps~300ps；
The VCXO is double thermostat low phase noise output crystal oscillators.
The invention will be described in further detail with reference to the accompanying drawing:
PNT integration
PNT integration is realized to obtain the method in the ultraprecise time synchronization implementation whole nation " cloud is synchronous " from optical fiber transmitting
New Algorithm:
So-called " cloud is synchronous " applies the optical fiber branch of unified time frequency reference if it is the special general character that oneself builds with O wave band
PRTC (two caesium originals can be configured for each vertical industry " used time " user (such as several important naval ports) by supportting the net network platform
Sub-clock), if currently realizing master-slave synchronisation vertical with eHPRTC and obtaining≤± 500ps, wireless broadcast time service station
The extension of optical fiber of naval port (should be zoom out several RTC nodes of arrival and then can reach the timing tracking accuracy or higher of ± 1ns)
The stability in its frequency reference source and accuracy can reach≤(be transmitted by 0 built wave band optical fiber within ± 5.8E-15/ days
What the supporting network network platform obtained), i.e., the survey of optical fiber transmitting when, punctual, time service and used time gradually form as ultraprecise time service
Basis, the present invention relies on this basis, and wherein O, P, A, B, C, D, E, F, G are the star-like band-like backbone network net of honeycomb as shown in Figure 1:
TC node in network.
Seamless interfacing: Time synchronization technique is that benchmark is consistent at the time of requiring each time synchronization node, this is the time
Synchronous basic demand makes wired (light of ground first with the unified time frequency reference of the fiber support net network platform
It is fine) it synchronous with the Time and frequency standard of wireless broadcast website is respectively reached according to used time demand:
The first situation:
Current Po, which is essential, Yaos the wired and wireless seamless interfacing time service that Solution determines and reaches by a RTC node of 3000km31 (or 61)
It arrives:
Relative frequency deviation is compared with ePRTC :≤± 5E-14/ days；
And ePRTC compares relative phase deviation :≤± 5ns/ days；(MTIE≤10ns)
With ePRTC comparison time synchronization accuracy :≤10ns；
Second situation:
When optical fiber transmitting time service precision realizes that 3000km 31 (or 61) a RTC node should reach:
Relative frequency deviation is compared with HPRTC :≤± 5E-15/ days；
And HPRTC compares relative phase deviation :≤± 500ps/ days；(MTIE≤1ns)
With HPRTC comparison time synchronization accuracy :≤1ns；
The third situation:
After the star-like band-like polynary multifrequency common-view mode fiber support net network platform of honeycomb is built up, national five big regions of war
0 grade of a RTC of backbone network 3000km31 (or 61) is all constructed by the RTC node that the eHPRTC such as national time service center are main website
Node reaches:
Relative frequency deviation is compared with eHPRTC :≤± 5.79E-16/ days；
Relative phase is compared with eHPRTC to deviate :≤± 50ps/ days；
With eHPRTC comparison time synchronization accuracy :≤100ps；
Substantially, by eHPRTC clock source group, (stability and accuracy for setting its Time and frequency standard are superior to
1E-16, that is, retention property is not poor 1 second 300,000,000 years and is the clock source that+three fountain caesium clocks of two light clocks are set up).HPRTC
(stability and accuracy for setting its Time and frequency standard were superior to 1E-15 i.e. retention property as 30,000,000 years to clock source group
Not poor 1 second and be+three caesium clocks of two hydrogen clocks set up clock source group).
EPRTC clock source group (with GPS satellite navigation system mutually same of standard configuration hydrogen clock+two caesium clock) (set it when
Between frequency reference stability and accuracy be superior to 1E-14 i.e. retention property be 300 years it is 1 second not poor) this high-precision time service
Synchronization accuracy in system depends primarily on clock source.
The slave station clock of the backbone network platform of this high-precision time dissemination system is:
PRTC: being+two rubidium clocks of a caesium clock by standard configuration, and the when base ageing rate of own is not poor 1 second 300,000 years every
The drift of its (when itself is independent) and UTC absolute time comparison time is accumulated as 8.64ns/ days, and every drift in 10 seconds is accumulated as
1ps, it is per second then there was only 0.1ps.
LRPTC: being two rubidium clocks by standard configuration, and the when base ageing rate of own is not poor 1 second 30,000 years exhausted with UTC daily
The drift of time comparison time is accumulated as 86.4ns/ days, every drift in 10 seconds is accumulated as 10ps, and each second is then 1ps.
ERTC: by standard configuration be two DCXO (i.e. enhanced double thermostat ultralow phase noises export crystal oscillator) it
1~the 2E-11 of ageing rate of itself, i.e., daily with UTC absolute time comparison time drift be accumulated as 864.0ns/ days~
1728ns/ days, every drift in 10 seconds was accumulated as 100ps~200ps, and each second is then 10ps~20ps.
RTC: base when by standard configuration being two VCXO (i.e. double thermostat low phase noises export crystal oscillator) own
Ageing rate is 2~3E-10, i.e., is accumulated as the 17.28 μ s/ days of μ s~25.92 with the drift of UTC absolute time comparison time daily, often
It is then 200ps~300ps that drift in 10 seconds, which is accumulated as 2ns~3ns each second, needs to be used with caution in ultraprecise time dissemination system, one
As only make " zero " slave station clock apart from the loose coupling master-slave synchronisation net network platform synchronous with level Four.
When " used time " users such as mobile ship/battlebus are " precisely automatic by round-based fiber optics supporting network network platform TC node
Again more with the+TC node surrounding such as space-based Beidou/GPS/GLONASS while clock synchronization " obtains split-second precision frequency reference
A platform transmitting TC node with the fully synchronized radio broadcast Time and frequency standard of round-based fiber optics supporting network network (is anti-
" it was found that i.e. destroy " can be used cellulor (≤25km) extension of optical fiber and zoom out broadcast and touch formula) Time and frequency standard formed it is polynary
It is more as shown in Figure 2 than the comparison phase network architecture that multifrequency regards common thresholding altogether.
Seamless interfacing mode: me is selected in the unified time frequency reference timing equipment (device) of the configurations such as ship/battlebus
The slave station clock ePRTC/ on two kinds of common-view mode special chips (12 tunnels/24 road common-view modes) and standard configuration of state's autonomous innovation
The backbone network of PRTC/LPRTC/eRTC/RTC high 10 times of the fiber support net network platform corresponding with it is (including vertical
The dedicated through TC node of industry) TC node complete " accurate automatic clock synchronization " first after, then receive what a variety of radio waves passed
Time service information (including space-based/ground rowland-C microwave long wave shortwave etc.) participates in polynary multifrequency and regards " common thresholding " comparison altogether
Compare phase.
O, A, B, C, D, E, F, G are the TC section in fiber support net unified time frequency reference backbone network in Fig. 1
Point, the station O are eHPRTC/HPRTC split-second precision frequency reference TC nodes, and A, B, C, D, E, F, G are by the optical fiber transmitting of the station O
Backbone network on TC node, D, E in Fig. 1 are then the TC nodes on big marine certain islands and G point is backbone network
The upper naval port XX TC node, the time synchronization of these nodes are consistent, then certain ship " H " can be achieved with " high-precision at the port G
Automatic clock synchronization " if A node be exactly HPRTC or as in Fig. 2 between O → A P station TC node be HPRTC if H-TC node
(naval port XX) can standard configuration ePRTC/PRTC make the clock source at this female port and make backbone network platform nodes or vertical industry is special
User node, then certain ship H inside timing system equipment standard configuration is ePRTC/PRTC/LPRTC, therefore regardless of configuration, is had
Corresponding wireless seamless interconnection method.
Fig. 2 is the explanation to land ground, a kind of backbone network that wherein O, P, A, B, C, D, E, F, G are represented: the station O TC
Node is that can be national time service center either national satellite navigation center (but must be real between both to eHPRTC
Existing mutually synchronization is < 100ps more consistent than comparison phase and timing tracking accuracy) when can use.That is the unified time of eHPRTC
The accuracy of frequency reference and stability are to reach 1E-16, here by taking this movement flying object of Beidou navigation satellite as an example, are answered
The method that optical fiber transmitting and radio monitoring measurement seamless interfacing are realized with < 1ns/200ps timing tracking accuracy:
By O stand eHPRTC centered on O → P → F → G we G is positioned at some spaces (such as Xichang
Launching centre) center configuration has ePRTC (the TC node of the fiber support net network platform of ground time service) synchronizing online light
The synchronous effect of fine supporting network network makes its Time and frequency standard improve three caesiums configured inside at least above navigation satellite
The when base ageing rate of clock or other configurations, when before Beidou navigation satellite in the transmission heart transmitting with optical fiber Transfer Technology and G
Between frequency reference realize " High Precision Automatic clock synchronization " and its surrounding ground monitoring station radio wave seamless interfacing, if send out
After own realization " High Precision Automatic clock synchronization " and wireless seamless switch to " punctual " success of this transmitting node on the day before penetrating after docking successfully
It launches again, a few houres enter its planned orbit, if the timing tracking accuracy < 1ns of " High Precision Automatic clock synchronization ",
Clock deviation < 1ns between the Beidou navigation satellite so emitted from now on will be possibly realized.
1. independent ship seamless interfacing technology
When the seamless interfacing framework and technical requirements of ship configuration (ePRTC):
If certain ship needs to configure into the ePRTC node i.e. gas rubidium clock of caesium clock+one of hydrogen clock+one, tracking is synchronized
The remote loose coupling Phase-Locked Synchronous effect of HPRTC is likely to be breached:
Relative frequency deviation is compared with HPRTC :≤± 5E-15/ days；
And HPRTC compares relative phase deviation :≤± 200ps/ days；
With HPRTC comparison time synchronization accuracy: < 400ps；
Leave the port and navigate by water wireless " punctual ": before departure from port it is wired with wireless using fiber support net network platform TC formation
It is close that polynary multifrequency regards " common thresholding " comparison setting various wireless regenerated UTC moment benchmark of broadcast time service of Fig. 1 network architecture altogether
Point two kinds of situations are closed in cut phase:
The first situation:
When the naval port XX configuration be+two caesium clocks of a hydrogen clock be eHPTRC hang down again industry dedicated time service user when
In place, then full sea area rowland-C extension is zoomed out to synchronize and be built up, beacon also becomes the enhanced light of Beidou for " ps grades " of 3000km transmitting
The TC node of the fine supporting network network platform, the temporal frequency such as six TC nodes of Fig. 1 surrounding outside the naval port XX is same at this very moment
Walk precision height unanimously then when TC node apart:
Radio wave circuit by with wired optic fibre light path by having corresponding wired optical routing and wireless power port circuit by nothing
Seam docking standard configuration time delay time service, and the realization polynary multifrequency in 24 roads regards " common thresholding " than comparison phase altogether, core is can be quickly smart
The Delay Variation error of quasi- test ship's navigation, to realize world sea integrated " when survey " " punctual " " time service " and use
When network system time it is synchronous, " punctual " " time service " " when survey " for certain meaning, position and navigation system is also integrated
At one.
Second situation:
The slightly higher grade of fiber support net network platform TC node of ship surrounding, then punctual time service also can low one
A grade, when the seamless interfacing framework and technical requirements of ship configuration (PRTC):
If certain ship needs to configure into PRTC node i.e.+two rubidium clocks of caesium clock, the long distance of synchronous HPRTC is tracked
It is likely to be breached from loose coupling Phase-Locked Synchronous effect:
Relative frequency deviation is compared with HPRTC :≤± 1E-14/ days；
And HPRTC compares relative phase deviation :≤± 500ps/ days；
With HPRTC comparison time synchronization accuracy :≤1ns.
Ship configures (LPRTC):
Wirelessly " punctual " effect leans on frequency phase lock synchronous effect MTIE then according to time interval scale of measurement precision and setting entirely
The benign tracking compression sizes of fixed digital damped coefficient determine that ideal state time service precision is ± 10ns
Ship configures (eRTC):
Wireless punctual effect depends on clock synchronization base ageing rate control accuracy, and requirement is largely practiced measurement analysis and found out most preferably
Intelligent control method, on special ship best configuration should this selection LPRTC or more configure
2. the formation seamless interfacing technology in several same clock sources:
Fig. 2 is that H is one there are many a formation of ship in Fig. 1, they are " High Precision Automatic at a port XX simultaneously
Clock synchronization " to a time synchronization initial time again with corresponding wireless time service broadcast station seamless interfacing, by wireless after leaving the port
The complete Frequency Synchronization in broadcast station " punctual ".
3. the seamless interfacing technology of other mobile objects:
It overlength distance broadcast station (navigation satellites such as GPS/ Beidou/GLONASS) can practical 100Hz or concern reception foundation
1PPS rising edge initial time synchronization accuracy height is consistent.
Claims (10)
1. the time service method of a kind of optical fiber and the punctual synchronous seamless interfacing of wireless time service, which is characterized in that in wireless time service object
Upper configuration mobile terminal unified time frequency reference timing equipment, the corresponding optical fiber of mobile terminal unified time frequency reference timing equipment
After the TC node of the backbone network of the supporting network network platform completes automatic clock synchronization first, then receive awarding for a variety of radio waves biographies
When information participate in polynary multifrequency and regard " common thresholding " altogether than comparing phase；The wireless time service object be ship, vehicle or other can
Mobile carrier；The time service information that a variety of radio waves pass includes space-based/ground rowland-C microwave long wave shortwave.
2. the time service method of optical fiber according to claim 1 and the punctual synchronous seamless interfacing of wireless time service, which is characterized in that
The mobile terminal unified time frequency reference timing equipment includes 12 road common-view mode chips or 24 road common-view mode chips；And it marks
With slave station clock ePRTC, PRTC, LPRTC, eRTC or RTC.
3. the time service method of optical fiber according to claim 1 or 2 and the punctual synchronous seamless interfacing of wireless time service, feature exist
In, first with the unified time frequency reference of the fiber support net network platform make the wired and wireless broadcast website of ground when
Between frequency reference it is synchronous respectively reached according to used time demand it is following:
1) 3000km is pressed in wired and wireless seamless interfacing time service, and 31 or 61 RTC nodes reach:
Relative frequency deviation≤± 5E-14/ days is compared with ePRTC；
And ePRTC compares relative phase deviation≤± 5ns/ days；
With ePRTC comparison time synchronization accuracy≤10ns；
2) when optical fiber transmitting time service precision realizes that 3000km, 31 or 61 RTC nodes reach:
Relative frequency deviation≤± 5E-15/ days is compared with HPRTC；
And HPRTC compares relative phase deviation≤± 500ps/ days, wherein MTIE≤1ns；
With HPRTC comparison time synchronization accuracy≤1ns；
3) after the star-like band-like polynary multifrequency common-view mode fiber support net network platform of honeycomb is built up, each area is all by time service center
EHPRTC is that the RTC node of main website constructs 0 grade of backbone network 3000km, and 31 or 61 RTC nodes reach:
Relative frequency deviation≤± 5.79E-16/ days is compared with eHPRTC；
Relative phase is compared with eHPRTC to deviate≤± 50ps/ days；
With eHPRTC comparison time synchronization accuracy≤100ps；
When mobile ship or vehicle are precisely automatic right by round-based fiber optics supporting network network platform TC node as " used time " user
When, obtain split-second precision frequency reference while again with space-based Beidou/GPS/GLONASS and TC node surrounding it is multiple with
The temporal frequency of the platform transmitting TC node of the fully synchronized radio broadcast Time and frequency standard of round-based fiber optics supporting network network
Benchmark forms polynary multifrequency and regards common thresholding altogether than the comparison phase network architecture.
4. the time service method of optical fiber according to claim 3 and the punctual synchronous seamless interfacing of wireless time service, which is characterized in that
The stability and accuracy for setting the Time and frequency standard of eHPRTC clock source group are superior to 1E-16, i.e. retention property is 300,000,000 years
Clock source that is 1 second not poor, and adding three fountain caesium clocks to set up for two light clocks.
5. the time service method of optical fiber according to claim 3 and the punctual synchronous seamless interfacing of wireless time service, which is characterized in that
The stability and accuracy for setting the Time and frequency standard of HPRTC clock source group are superior to 1E-15, i.e. retention property is 30,000,000
Not poor 1 second of year, and the clock source group for adding three caesium clocks to set up for two hydrogen clocks.
6. the time service method of optical fiber according to claim 3 and the punctual synchronous seamless interfacing of wireless time service, which is characterized in that
EPRTC clock source group adds two caesium clocks with GPS satellite navigation system mutually same hydrogen clock of standard configuration.
7. the time service method of optical fiber according to claim 6 and the punctual synchronous seamless interfacing of wireless time service, which is characterized in that
The stability and accuracy for setting the Time and frequency standard of ePRTC clock source group are superior to 1E-14 i.e. retention property as 300 years not
Poor 1 second.
8. the time service method of optical fiber according to claim 3 and the punctual synchronous seamless interfacing of wireless time service, it is characterised in that:
The PRTC is that a caesium clock adds two rubidium clocks, and the when base ageing rate of PRTC itself is 300,000 years 1 second not poor, i.e., itself is only
Immediately, it is accumulated as 8.64ns/ days with the drift of UTC absolute time comparison time daily, every drift in 10 seconds is accumulated as 1ps, often
Second then only has 0.1ps；
The LRPTC is two rubidium clocks, the when base ageing rate of LRPTC itself be not poor 1 second 30,000 years daily with UTC absolute time
Between comparison time drift be accumulated as 86.4ns/ days, every drift in 10 seconds is accumulated as 10ps, and each second is then 1ps.
9. the time service method of optical fiber as claimed in claim 3 and the punctual synchronous seamless interfacing of wireless time service, which is characterized in that described
ERTC is two DCXO, 1~2E-11 of ageing rate of the eRTC itself, i.e., tires out daily with the drift of UTC absolute time comparison time
Product is 864.0ns/ days~1728ns/ days, and every drift in 10 seconds is accumulated as 100ps~200ps, each second be then 10ps~
20ps；The DCXO is enhanced double thermostat ultralow phase noise output crystal oscillators.
10. the time service method of optical fiber as claimed in claim 3 and the punctual synchronous seamless interfacing of wireless time service, which is characterized in that institute
Stating RTC is two VCXO, and the when base ageing rate of the RTC itself is 2~3E-10, i.e., daily with UTC absolute time comparison time
Drift is accumulated as 17.28 μ of μ s~25.92 s/ days, and every drift in 10 seconds is accumulated as 2ns~3ns, each second be then 200ps~
300ps；The VCXO is double thermostat low phase noise output crystal oscillators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910346789.9A CN110286580B (en) | 2019-04-27 | 2019-04-27 | Time service method for synchronous seamless connection of optical fiber and wireless time service timekeeping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910346789.9A CN110286580B (en) | 2019-04-27 | 2019-04-27 | Time service method for synchronous seamless connection of optical fiber and wireless time service timekeeping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110286580A true CN110286580A (en) | 2019-09-27 |
| CN110286580B CN110286580B (en) | 2020-12-29 |
Family
ID=68001821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910346789.9A Active CN110286580B (en) | 2019-04-27 | 2019-04-27 | Time service method for synchronous seamless connection of optical fiber and wireless time service timekeeping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110286580B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113888853A (en) * | 2021-10-25 | 2022-01-04 | 哈尔滨工程大学 | Real-time monitoring system for multi-ship motion postures |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2340837C (en) * | 2000-03-17 | 2005-05-10 | Hitachi, Ltd. | Method and apparatus for transmitting and receiving information |
| CN101363497A (en) * | 2008-10-10 | 2009-02-11 | 中国航天科技集团公司第五研究院第五〇四研究所 | Shock-absorbing device |
| CN103546267A (en) * | 2013-09-25 | 2014-01-29 | 广东电网公司电力调度控制中心 | Time synchronization monitoring method and system |
| CN104486017A (en) * | 2014-11-07 | 2015-04-01 | 中国电子科技集团公司第二十八研究所 | Satellite time service multi-node synchronization monitoring method based on IP light transmission |
| CN106330374A (en) * | 2016-08-19 | 2017-01-11 | 四川泰富地面北斗科技股份有限公司 | Optical fiber support network based on unified time and frequency standard |
| CN108768506A (en) * | 2018-04-08 | 2018-11-06 | 四川泰富地面北斗科技股份有限公司 | A kind of polynary multifrequency common-view mode time service method based on common thresholding |
| CN109541642A (en) * | 2018-11-05 | 2019-03-29 | 中国人民解放军海军工程大学 | It is a kind of to equip the synchronous recording system of data more |
-
2019
- 2019-04-27 CN CN201910346789.9A patent/CN110286580B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2340837C (en) * | 2000-03-17 | 2005-05-10 | Hitachi, Ltd. | Method and apparatus for transmitting and receiving information |
| CN101363497A (en) * | 2008-10-10 | 2009-02-11 | 中国航天科技集团公司第五研究院第五〇四研究所 | Shock-absorbing device |
| CN103546267A (en) * | 2013-09-25 | 2014-01-29 | 广东电网公司电力调度控制中心 | Time synchronization monitoring method and system |
| CN104486017A (en) * | 2014-11-07 | 2015-04-01 | 中国电子科技集团公司第二十八研究所 | Satellite time service multi-node synchronization monitoring method based on IP light transmission |
| CN106330374A (en) * | 2016-08-19 | 2017-01-11 | 四川泰富地面北斗科技股份有限公司 | Optical fiber support network based on unified time and frequency standard |
| CN108768506A (en) * | 2018-04-08 | 2018-11-06 | 四川泰富地面北斗科技股份有限公司 | A kind of polynary multifrequency common-view mode time service method based on common thresholding |
| CN109541642A (en) * | 2018-11-05 | 2019-03-29 | 中国人民解放军海军工程大学 | It is a kind of to equip the synchronous recording system of data more |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113888853A (en) * | 2021-10-25 | 2022-01-04 | 哈尔滨工程大学 | Real-time monitoring system for multi-ship motion postures |
| WO2023071703A1 (en) * | 2021-10-25 | 2023-05-04 | 哈尔滨工程大学 | Multi-ship motion attitude real-time monitoring system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110286580B (en) | 2020-12-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101487882B (en) | Frequency coherence within a location network | |
| CN107395309A (en) | High accuracy relative ranging and method for synchronizing time based on inter-satellite link | |
| CN107483137B (en) | Multistation split-second precision frequency synchronization method | |
| CN105682221A (en) | Passive positioning system based on ultra wide band (UWB) and positioning method | |
| CN105871495A (en) | Time synchronization method, communication ground station and user terminal | |
| US20120293373A1 (en) | Rtls system using tdo | |
| CN101084453A (en) | Transfer of calibrated time information in a mobile terminal | |
| CN104040367A (en) | Methods And System For Multi-path Mitigation In Tracking Objects Using Reduced Attenuation RF Technology | |
| CN109040964A (en) | A kind of efficient passive type time-division TDOA localization method for eliminating clock frequency difference | |
| CN110247722A (en) | A kind of measurement method of multinomial random variation parasitic noise in Time Transmission | |
| CN107566070A (en) | The method of one-way synchronization transmission time frequency | |
| Li et al. | Three-dimensional cooperative localization via space-air-ground integrated networks | |
| CN110286580A (en) | A kind of time service method of optical fiber and the punctual synchronous seamless interfacing of wireless time service | |
| CN102546072A (en) | Regenerative UTC (Universal Time Coordinated) atomic time ultrahigh precision time frequency synchronization network | |
| CN109743776A (en) | A kind of base station networking method for synchronizing time based on GNSS | |
| CN108923874A (en) | A kind of sound synchronous method based in distribution type hydroacoustic network Passive Positioning System | |
| CN104459682A (en) | Distance measurement method for automatically eliminating dynamic distance zero value | |
| CN104392108B (en) | A kind of long-range positioning system (Loran) and method using iteration difference algorithm | |
| CN106154228A (en) | Based on without the localization method of text navigation signal and equipment thereof | |
| KR100521965B1 (en) | Down link typed location estimating system of terminal system and method therefor | |
| CN101382430A (en) | Temporary continental rise navigation method and system | |
| EP3855203B1 (en) | Method and system for hf positioning via smoothing of ionospheric undulations | |
| Anderson et al. | Low Earth Orbit Navigation System (LEONS): Scalable GNSS-Independent Time Transfer and Positioning for Space Users | |
| CN100348996C (en) | Method and system for positioning navigation in stratosphere | |
| RU2381538C1 (en) | Method of distributing precise universal time signals over telecommunication network and system for distributing precise universal time signals |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |