CN105991205A - Verifiable and adjustable full synchronous communication network, and implementation method thereof - Google Patents
Verifiable and adjustable full synchronous communication network, and implementation method thereof Download PDFInfo
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Abstract
The invention discloses a verifiable and adjustable full synchronous communication network, and an implementation method thereof. The implementation method of the verifiable and adjustable full synchronous communication network comprises the steps: setting a time frequency standard system and a performance monitoring and evaluation system; comparing all the PRCs (Primary Reference Clock), LPRs (Local Primary Reference) and the like of the whole network respectively with the time frequency standard system in a common view satellite mode; according to the obtained clock error through common view comparison between the PRCs and LPRs and the time frequency standard system, calculating, processing and evaluating the technical performance in the performance monitoring and evaluation system; and adjusting the clock of each PRC and each LPR through the clock error so as to realize full synchronization of the communication synchronization network. The implementation method of the verifiable and adjustable full synchronous communication network belongs to a communication synchronization network full synchronizing method based on satellite common view, can establish a high accuracy time frequency measuring system, a synchronization performance evaluation system and a synchronous calibration system, can realize trusted verification and calibration of the synchronization performance quality, and can realize full synchronous operation of the full synchronous communication network based on the above capabilities.
Description
Technical field
The present invention relates to Communication Network Technique field, can verify that adjustable full synchronous communication network particularly to one
And its implementation.
Background technology
Digital synchronous network is base support net important in communication network.Current commonly used point of communication synchronization net
Cloth multiple reference clock (mixed synchronization) mode is used, in the communication industry standard " planning of digital synchronous network
Method and organizational principle " in (YDN-177-1999), clearly proposing from now on will be with " the full synchronization that can verify that
Net is the object of planning ".Since entering this century, although development communication technologies is quickly, but this target is always
Fail really to realize at nationwide telecommunications net.
For communication synchronization net networking, G.810 ITU-T suggestion proposes 3 homochronousness modes, i.e. entirely synchronize,
Entirely plesiochronous and mixed synchronization, similar definition, in Communication in China professional standard (YDN-177-1999),
Also there is clear and definite specification.
Under the full method of synchronization, in net, the clock rate synchronization of all devices is by one or more reference clock controls
System.Under conditions of by a reference clock control, the whole network uses multistage master-slave synchronisation framework；At multiple bases
Under the conditions of punctual clock, all reference clocks should run simultaneously, and has identical long-term frequency i.e. under normal operation
The rate degree of accuracy.The Synchronization Network run in this manner, it is ensured that the controlled sliding index of TOCOM total communication reaches
Higher level.
Under complete plesiochronous mode, in net, each clock unit independent operating, does not controls mutually.When this mode requires
Clock has the higher degree of accuracy and stability, to ensure that the slip that relative frequency deviation causes can reach related
The requirement of index.
Under mixed synchronization networking mode, typically digital network is divided into some subnets, each subnet digital device
Clock, by reference clock (the meeting G.811) control belonging to this subnet, uses full synchronization inside each subnet,
And use plesiochronous mode to run between each subnet reference clock.
Telecom operators of China are universal plans, builds and uses clock to synchronize according to current communications professional standard
Net, Frequency Synchronization and the current independent development of time synchronized, Frequency Synchronization net uses mixed synchronization mode group
Net, it is achieved distributed many reference synchronization.
As a example by the Frequency Synchronization net of certain telecom operation.It is divided into 31 at national Frequency Synchronization net
Synchronization zone, and according to stratum-3 clock structure networking, as shown in Figure 1.Full synchronization side is used in each synchronization zone
Formula is run, and uses plesiochronous mode between the reference clock of provincial region.At the whole network, 5 whole nation benchmark are set
Clock PRC (cesium-beam atomic clock group+GPS+BITS), sets respectively in 31 provinces (municipality directly under the Central Government, self-control district)
Put local primary reference LPR (GPS+BITS), in BITS, set double rubidium atomic clock.
In a synchronization zone, in principle online, the clock of all digital communication equipments all should finally be traceable to one
On individual reference clock.Therefore, this reference clock must assure that to have and meets the performance that standard requires, Fang Kebao
The synchronizing quality of card the whole network.But, how to realize this reference source cost-effectively and by synchronization object
In high precision, the monitoring of high stable performance and evaluation, it is simply that the key of this type of technology.
At present, runnability is completed at the performance automatic detection function relying primarily on network management system by Synchronization Network
The monitoring of quality, is equivalent to the high-precision instrument of multiple stage and detects at the same time；In order to improve the reliability of system,
The node device (BITS) of synchronization often arranges clock reference source or the reference source of more than 4, BITS system
System uses majority voting technology, compares selection for multiple clock reference sources, including net synchronization capability
(main containing 4 indexs), Synchronization Status Message SSM, transmission performance (7 indexs), clock priority
Deng.Despite the use of more detection technique, but with the communication technology development and its for synchronize high-precision
Degree requires, still has bigger gap.Each unit of operation generally lacks this type of special high precision test means.
Clock synchronous network high accuracy frequency detecting and effective checking of running performance index, be not only future sync net
Developing direction, is also one of the prominent weak link of the current communications industry.
In recent years, the communication technology is always in fast development, but the synchronization just proposing before the professional standard more than ten years
The net object of planning but fails to realize in China, shows that it technically still has higher difficulty, and particularly difficulty exists
How to realize " can verify that " of high accuracy Frequency Synchronization performance.In prior art, it is difficult to realize can verify that entirely
Synchronization Network mainly includes following reason:
ITU-T-G.811 specification, applies under service condition all, during for the Continuous Observation of >=7 days
Between, frequency accuracy should be better than ± 1E-11.China is vast in territory, in order to ensure the sliding of communication the whole network
Can, Communication in China professional standard " Primary Clock equipment and method of testing thereof " is had higher requirement, i.e.
It is better than ± 3E-12.
The stability of Primary Clock reference clock and the degree of accuracy are all very high, in order to ensure net synchronization capability, and industry mark
Accurate " planing method of digital synchronous network and organizational principle " (YDN-177-1999) regulation: " one-level benchmark
Clock should periodically and UTC Universal Time Coordinated (UTC) carries out time and frequency ratio pair, and the comparison cycle is less than 30 days ".
But, it through the actual conditions of the multiple unit of investigation is, due to understanding, expense and the first-class factor of technology, this rule
Fixed not effective execution.
The requirement of such Frequency Synchronization performance, the requirement for detection method and instrument is high.So that now
The each big operation commercial city having is difficult to.The domestic communication check unit majority having qualification does not possess related yet
Condition.There is minority unit to utilize cesium-beam atomic clock etc. as reference data, use frequency counting or time interval
(TIE) method does similar test.Strictly, this measuring accuracy and the precision grade of measurand are
Quite or relatively low (relative satellite signal), for the confidence level of the test result of ps (N*E-12S) rank
It is worth discussion, be that there is reference value at most.
The personnel being engaged in communication maintenance are substantially the network management system depending on Synchronization Network at present, monitor Synchronization Network
Net synchronization capability index, although preferable BITS network management system can monitor relative frequency deviation, MTIE, TDEV,
The performance quality such as SSM and transmission, uses majority voting technology etc., but by existing equipment technical conditions and
The restriction of cost, the particularly restriction of tested person reference source precision, the even reference without special satisfied requirement
, generally there is the phenomenon of " oneself detects oneself " in source, its practical function is also unable to reach certainly effectively " can
The requirement of checking ", the problem that there is misleading even to a certain extent, make guardian excessively high believe that it is made
With, it is mistakenly considered webmaster and do not alert, it is exactly that performance indications are qualified that monitoring standard module does not transfinite.
Therefore, in split-second precision and frequency performance context of detection, in communication industry, generally there is professional recognition
Mistaken ideas and the blind area of means of testing, take for current mode precision very high, use can be met and require,
This also causes slowly failing to realize " the full synchronization that can verify that " target to a certain extent.
Thus, the development of the communications industry, need badly and want a kind of full synchronizing network realizing can verify that, to improve
High-performance enabling capabilities to the communication service of more horn of plenty.
Content of the invention
The present invention provides one to can verify that adjustable full synchronous communication network and its implementation, existing in order to solve
There is the problem being still not carried out in technology can verify that full synchronizing network.
The present invention provides one to can verify that adjustable full synchronous communication network implementation method, described method bag
Include:
Time and frequency standard system and performance monitoring assessment system are set；
By all for communication synchronization net Primary reference clock PRC and local primary reference LPR respectively by satellite altogether
Carry out the time deviation of Long baselines, frequency accuracy performance etc. depending on mode and described time and frequency standard system to refer to
Mark comparison；
According to the clock obtaining after described PRC, LPR and time and frequency standard system performance index comparison by mistake
Difference, in described performance monitoring assessment system, analyzing and processing obtains assessing data；Realize PRC with described when
Between effective checking of simultaneous techniques performance between frequency standard, real-time comparison；
Clock by described clocking error and assessment data point reuse each PRC, LPR, it is achieved PRC and institute
State the adjustable between time and frequency standard or tracking lock；Realize can verify that of communication synchronization net, adjustable
Full synchronization.
Described method also includes:
Described satellite common vision mode uses GPS GNSS satellite common-view receiver, and 1: 1
Use in pairs or 1: N multiple spot uses simultaneously；
Regard altogether DVB be arranged at time and frequency standard system place altogether regarding main website；Each PRC
Or LPR arranges and regards altogether DVB as secondary station；All participation common-view modes altogether regard satellite reception
Machine operationally needs same GNSS satellite of tracking lock.
Described method also includes:
By clock frequency or the time of described comparison error transfer factor each PRC, LPR, make between each clock
Frequency departure reaches predetermined requirement；It is preferably better than ± 1E-13.
Described method also includes:
Clock error data between described PRC and LPR and time and frequency standard system passes through data communication
System transfers assesses system to performance monitoring；
Described is to utilize GNSS satellite as media depending on mode altogether, completes PRC, LPR and temporal frequency
Long baselines frequency apart from each other between modular system or Time transfer receiver, now common-view receiver must work
Make in regard altogether tracking mode, follow the tracks of same satellite.
Described method also includes:
With time and frequency standard system as comparison basis, when first obtaining Primary reference clock PRC or zonal basis
Time (frequency) deviation between clock LPR and time and frequency standard system, then commented by net synchronization capability monitoring
Estimate network analysis process, regulate and control PRC and LPR according to relative error and assessment result, reduce comparison pair
Frequency departure between as is to reach the purpose of synchronization.
One can verify that full synchronous network system, comprising:
Primary reference clock PRC, for by all for the whole network Primary reference clock PRC clocks respectively by satellite altogether
Carry out the performances such as the time deviation of Long baselines, frequency accuracy depending on mode with described time and frequency standard system to refer to
Mark comparison, and by comparison result sending performance monitoring and evaluating system；
Time and frequency standard system, is used for producing standard time and frequency signal；
System is assessed in performance monitoring, for obtaining after time and frequency standard system comparison according to described PRC
Clocking error, be computed process and obtain performance data；Adjust each PRC and LPR by described clocking error
Time and frequency, it is achieved the full synchronization of communication synchronization net.
Described system also includes:
Altogether time and frequency standard system, common-view receiver and performance monitoring assessment system, number are being set depending on main website
According to communication terminal；
Each described Primary reference clock PRC or local primary reference LPR arranges a common-view receiver and leads to
Letter terminal, as altogether regarding secondary station.
All of common-view receiver follows the tracks of same position location satellite.
Described system also includes:
Measurement data between Primary reference clock PRC, local primary reference LPR and time and frequency standard system
Assess system communication by datel circuit and corresponding data communication terminal with performance monitoring.
One can verify that adjustable full Synchronization Network, including one regards pair altogether regarding benchmark main website and some altogether
Stand, wherein:
Described altogether regarding benchmark main website, time and frequency standard system, common-view receiver and performance monitoring assessment are set
System；
Described time and frequency standard system is used for producing standard time or frequency signal；
Described common-view receiver is for synchronizing in satellite common vision mode depending on secondary station altogether with described；
System is assessed in described performance monitoring, for regarding secondary station and time and frequency standard system comparison altogether according to described
After clock error data, according to relevant criterion calculating process obtain net synchronization capability evaluating data, it is achieved high-precision
Can verify that of degree simultaneous techniques performance indications；
Described altogether regarding secondary station, for being carried out with described time and frequency standard system by satellite common vision mode respectively
Comparison, and comparison result is sent to net synchronization capability monitoring and evaluating system；By described deviation and assessment result
Adjust local measured clock, it is achieved the adjustable of clock signal, and realize communication synchronization net on this basis
Full synchronization.
Described network also includes no less than a common synchronization base station, for regarding pair with being total to one or more described
Stand synchronization, it is achieved the full synchronization of communication synchronization net.
The embodiment of the present invention arranges performance monitoring assessment system and time and frequency standard system；The whole network is owned
Primary reference clock PRC and local primary reference LPR clock are respectively by regarding mode and described temporal frequency altogether
Modular system is compared；According to obtain after described PRC, LPR and time and frequency standard systematic comparison
Error, calculating in described performance monitoring assessment system processes and obtains relative error；By described relative error
Adjust the clock of each PRC, LPR, it is achieved the full synchronization of communication synchronization net.The scheme of the embodiment of the present invention,
Based on the full synchronous method of communication synchronization net of satellite common vision measurement technology (CV), set up networking, concentration
Time and frequency measurement system and high accuracy time-frequency distribution system, by a performance monitoring assessment system and high accuracy
Standard time and frequency system, it is achieved the trusted checking of net synchronization capability quality, and realize on this basis whole with
The full synchronous operation of step net.
Other features and advantages of the present invention will illustrate in the following description, and, partly from explanation
Book becomes apparent, or is understood by implementing the present invention.The purpose of the present invention and other advantages can
Realized by structure specifically noted in the specification write, claims and accompanying drawing and obtain
?.
Below by drawings and Examples, technical scheme is described in further detail.
Brief description
Accompanying drawing is used for providing a further understanding of the present invention, and constitutes a part for specification, with this
Bright embodiment is used for explaining the present invention together, is not intended that limitation of the present invention.In the accompanying drawings:
Fig. 1 is stratum-3 clock structure networking schematic diagram in prior art；
A kind of data middle layer implementation method principle flow chart that Fig. 2 provides for the embodiment of the present invention 1；
For the one that the embodiment of the present invention 2 provides, Fig. 3 can verify that adjustable full synchronous communication network system is tied
Structure schematic diagram；
Fig. 4 can verify that adjustable full synchronous communication network structural representation for what the embodiment of the present invention 3 provided.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are illustrated, it will be appreciated that described herein
Preferred embodiment is merely to illustrate and explains the present invention, is not intended to limit the present invention.
In each embodiment of the present invention, since network planning target is " the full synchronization that can verify that ", then implement
Key issue can be summarized as two: one is how to realize effectively can verify that of performance indications, how two be
Realize the full synchronous operation that can verify that.
Realize regarding altogether GNSS (Global Navigation Satellite System, GPS)
Remotely the necessary condition of detection includes: the 1st, high-precision Zhong Yuan (atomic clock group)；2nd, being total to of requirement is met
Depending on receiver；3rd, performance monitoring assessment system (containing measuring terminals)；4th, long distance data transfer system.
Based on GNSS satellite common-view mode technology, can realize easily remote (Long baselines), high-precision
The time-frequency performance detection of degree and synchronization.Set up separately as a example by main website and secondary station by the first and second two places, utilize the high-precision of main website
Degree frequency and time source, as benchmark, are respectively provided with common-view receiver and measuring terminals in main website and secondary station, logical
Cross two station receivers and treat as a satellite or multiple satellite altogether to obtain difference (the star station of itself and signal to be compared
Difference), then by data transfer links, the measurement result of two places focused on performance monitoring assessment system and compare
Right, calculate the deviation (it is poor to stand) of two places, it is achieved high precision test, time-frequency are traced to the source；And can be inclined accordingly
Difference adjusts time and the frequency of slave station, reaches Time and Frequency Synchronization or the measurement of remote high-precision.
As in figure 2 it is shown, can verify that adjustable full synchronous communication network for the one that the embodiment of the present invention 1 provides
Implementation method principle flow chart, wherein,
Step 11, arranges time and frequency standard system and performance monitoring assessment system.
Here performance monitoring assessment system is actually similar to existing clock network guard system, passes through detector unit
Manage clock system performance monitoring, comparison and analysis with special-purpose software etc., it is achieved net synchronization capability is specifically verified.
Time and frequency standard system is that a high-precision temporal frequency produces system, as clock reference source, produces
High-precision clock signal.For example, it is possible to utilize cesium-beam atomic clock group+GPS or dipper system time service etc..
Setting for performance monitoring assessment system, it is therefore intended that monitoring, calculating, comparison and management whole network
Temporal frequency information, and for the setting of time and frequency standard system, it is therefore intended that when obtaining a benchmark
Zhong Yuan.
All for the whole network Primary reference clock PRC clocks and local primary reference LPR etc. are led to by step 12 respectively
Cross GNSS satellite to compare with described time and frequency standard system depending on mode altogether.
The whole network is provided with multiple Primary reference clock (PRC, Primary Reference Clock) and region base
Punctual clocks (LPR, Local Primary Reference) etc., the quantity of concrete PRC and LPR can root
The needs on border are set factually.PRC and LPR need respectively by way of satellite common vision with the time frequency
Rate modular system is compared, and the process of comparison depends on and regards (CV, Common View) and measurement skill altogether
Art.
CV Time transfer receiver and transfer principle refer to any two places A and B on the earth, receive same at synchronization
The time signal of one GPS or big-dipper satellite SV carries out temporal frequency comparison, thus obtains two local clocks
Between time difference (clock correction).
If the clock time on A ground is tA, the clock time on B ground is tB, and satellite time is expressed as tSv, A,
B two places were expressed as with the time difference of satellite
Δ tAsv=tA-tSv-dA
Δ tBsv=tB-tSv-dB
In formula: dA and dB is path delay.
The data of A, B two places pass to the other side by communication network, after then carrying out common-view mode, and two differences
Value is subtracted each other the time difference that can obtain between two table clocks:
Δ tAB=Δ tAsv-Δ tBsv=(tA-tB)-(dA-dB)
16min can be set as a testing time section, wherein carry out regarding altogether observation with 13min, sample rate 1/s,
Signal type 1pps, then 3min is in order to analyze and process measurement data；Can also 10min be a test
Time period, sample rate 1/s, signal type 1pps, it is carried out continuously and regards observation altogether, simultaneously analyzing and processing measurement
Data.
GNSS has following outstanding advantage and feature depending on technology altogether；
Solve the difficult problem in the industry that net synchronization capability can verify that cost-effectively.Use common-view mode technology, will be original
Each independent clock group carries out combining real-time comparison and check and correction, utilize main website superhigh precision, through in the world
Comparison accreditation, the time and frequency standards that can trust are demarcating measured signal, thus realize higher than traditional approach
Markers and frequency marking accuracy class, significantly improve the time and frequency standards precision level of the whole network, it is achieved
The net synchronization capability that communication industry standard requires can verify that target.And this can verify that mode be economical, effectively,
Remotely, for a long time and easily.
Realize the time service of superhigh precision, the frequency reference of superhigh precision is provided.Utilize satellite common vision comparison and height
Performance tames clock technology can also realize the split-second precision of regional, Frequency Synchronization, reaches the work of time service
With.
Long-term observation under static conditions, it is possible to achieve thousand kilometers of relative deviations are less than the comparison accuracy of 5ns, dynamic
The precision less than 20ns can be realized under the conditions of state.In a distributed manner as a example by Synchronization Network, improve the synthesis of the whole network
Temporal frequency precision and holding capacity, host node device and each time-frequency subscriber unit use high steady taming clock
Scheme, it is achieved thereby that ability following aspects:
Realize time and the Frequency Synchronization function of networking, meet more type of communicating device frequency reference and
Synchronisation requirement；
Improve time/frequency synchronization accuracy；
Promote the independent time service of existing network synchronization node and punctual ability；
The duty of the whole network time frequency unit and relevant device can be monitored in real time.
In this step, each pair of satellite common-view receiver of joining object to be compared, one when being placed on primary standard
Clock PRC or LPR side, one is placed on time and frequency standard system side, and all of common-view receiver is followed the tracks of same
One GPS or big-dipper satellite etc..
Step 13, according to obtain after described PRC, LPR and time and frequency standard system common-view mode when
Clock error, calculating in described performance monitoring assessment system is processed and assessment technology performance, it is achieved Synchronization Network is high
Can verify that of precision property.
Absolute error between Primary reference clock PRC and LPR and time and frequency standard system is led to by data
Letter circuit transmission assesses system to performance monitoring；It is to utilize position location satellite as media depending on mode altogether, complete
Between Primary reference clock PRC (or local primary reference LPR) apart from each other and time and frequency standard system
Frequency or Time transfer receiver, common-view receiver must work in altogether regard tracking mode, follow the tracks of same satellite.
Have employed control network running frequency (time) deviation method, i.e. newly-built time and frequency standard system,
With PRC Primary reference clock comparison, not only improve the precision of comparison, also the result of comparison is passed through communication chain
Self-built performance monitoring assessment system is sent on road, by the monitoring adjusting function of monitoring system, monitors comparison
Frequency (time) deviation between each PRC and LPR, according to this deviation adjusting PRC and LPR so that it is frequently
Rate deviation, time deviation is in controlled range.
Step 14, adjusts the clock of each PRC, LPR by described clocking error or tracking lock regards defeated altogether
Go out clock, it is achieved communication synchronization net reference clock adjustable, and realize that communication synchronization net is entirely same on this basis
Step.
Clock ratio is to use GNSS satellite view measurement technology altogether to regulation and control scheme, is added by centralized test system
Regulator control system is constituted, centralized test system include the GNSS satellite common-view receiver of PRC and LPR side with
And concentrate the GNSS satellite common-view receiver of regulator control system side and split-second precision frequency standard system, concentrate
Regulator control system includes regulating and controlling soft and hardware, and centralized test system completes each PRC's and LPR to strange land
Line clock generator performance measurement, measuring basis is for concentrating the split-second precision frequency standard system of regulator control system side
System, the precision of described split-second precision frequency standard system should be better than ± 1E-13, then by concentration regulation and control is
System its measurement data of real-time collecting simultaneously analyzes and processes, the caesium clock to each Primary reference clock PRC simultaneously
Carry out real-time monitoring.
On this basis, it is achieved PRC, LPR and changeover clock SSU-T, local clock SSU-L until
The synchronous operation of the network element clock of communication equipment, i.e. realize can verify that of communication synchronization net, adjustable entirely with
Step.
With time and frequency standard system as comparison basis, first obtain Primary reference clock PRC, LPR and time frequency
Frequency error between rate modular system, then do as one likes energy monitoring and evaluating system process obtain relative error, root
Regulating and controlling PRC and LPR according to relative error, the frequency departure between reduction is to reach all synchro purpose.
Adjusted the clock of each PRC and LPR by described relative error, make the frequency departure between each clock meet
Require.
In the present embodiment, satellite common vision mode uses GPS GNSS satellite common-view receiver,
1: 1 paired use or 1: N multiple spot use simultaneously；It is arranged at time and frequency standard depending on DVB altogether
System place altogether regard main website；Each PRC or LPR arranges and has altogether regarding DVB as secondary station,；
All participation common-view modes operationally need same GNSS satellite of tracking lock altogether depending on DVB.
In the present embodiment, based on the full synchronous method of communication synchronization net of satellite common vision measurement technology (CV),
Set up networking, the time and frequency measurement system of concentration and high accuracy time-frequency distribution system, assessed by performance monitoring
System and a high-precision Standard time and frequency system, it is achieved the trusted checking of net synchronization capability quality, and at this
On the basis of realize the full synchronous operation of whole Synchronization Network.Novel synchronous network should according to unified planning, step by step
The principle implemented, operator with good conditionsi also can settle at one go.
In the present embodiment, according to the difference of concrete application, it may be considered that following scheme:
Scheme one: change the tertiary structure (three grades change one-level into) of conventional synchronization net.With above-mentioned telecom operation
As a example by business, a benchmark main website need to be built and more than 300 sets regard secondary station, the base after directly calibrating common-view mode altogether
Standard is arranged into prefecture-level BITS.The advantage of this mode is that network structure is succinct, and synchronization accuracy is high, network
Planning and designing are relatively easy.Problem is transformation preliminary work amount and investment is relatively big, for the adjustment of existing network
Impact is big；
Scheme two: maintain three grades of traditional structures of Synchronization Network constant, only newly set satellite common vision secondary station at PRC,
Telecom operators typically only need to regard altogether main website and 5 sets regard secondary station system altogether.This kind of mode is transformed easily, throws
Provide minimum, minimum for existing web influence；
Scheme three: newly set CMCV at Synchronization Network LPR, needs a primary standard station and tens of set to regard secondary station altogether.
Synchronization Network basic structure is constant inside the province, it is also possible to consider to increase time service ability, it is achieved temporal frequency Synchronization Network
Merge, transform originality energy monitoring and evaluating system simultaneously.
As it is shown on figure 3, can verify that adjustable full synchronous communication network for the one that the embodiment of the present invention 2 provides
Network system architecture schematic diagram, wherein,
Primary reference clock PRC21, for by all for the whole network Primary reference clock PRC (local primary reference LPR)
Respectively by satellite common vision mode and described time and frequency standard system 22 carry out Long baselines time deviation,
Frequency accuracy performance indications comparison, and comparison result is sent to performance monitoring assessment system 23；
Time and frequency standard system 22, is used for producing standard time and frequency signal；
System 23 is assessed in performance monitoring, for according to described PRC or LPR and time and frequency standard system ratio
The clocking error obtaining after to, is computed process and obtains performance data；Adjusted each by described clocking error
The time of PRC and LPR and frequency, it is achieved the full synchronization of communication synchronization net.
Further, described system also includes:
Altogether time and frequency standard system, common-view receiver and performance monitoring assessment system, number are being set depending on main website
According to communication terminal；
Each described Primary reference clock PRC 21 or local primary reference LPR arrange a common-view receiver and
Communication terminal, as altogether regarding secondary station.
All of common-view receiver follows the tracks of same position location satellite.
Further, described system also includes:
Primary reference clock PRC the 21st, exhausted between local primary reference LPR and time and frequency standard system 22
By datel circuit, performance monitoring assessment system 23 is transferred to error.
In actual application, if primary standard station is a set of regarding equipment altogether, including time (frequency) a reference source, CV
Receiver, remote performance monitoring and evaluating system and data communication system.Can share at present in public time-frequency
The resource of the heart, it is also possible in the centrally disposed personal system of the whole network of application unit, provide service for the whole network.
At existing PRC and LPR, often the reception system that regards altogether is joined at place, and original GPS antenna feeder can profit
Old, common-view receiver has BITS test interface to be connected with oneself, it is achieved regard the real-time comparison in center together, continuously
The performance quality of monitored area reference time frequency.
Implement difficulty to simplify the initial stage, for the SSU below Synchronization Network LPR, use existing frequency same
Step mode and structure are constant, mainly realize that clock is same in PRC (LPR) aspect by satellite common vision mode
The full synchronous operation that can verify that of step net.
For regarding benchmark atomic clock group altogether, due to its investment relatively greatly, and purchasing at present is limited by abroad, can
With self-built, also may utilize external resource and realize.
Next step target is to realize that frequency merges with time synchronization network, it is achieved the calibration of temporal frequency, reaches
Ratio can verify that higher requirement, needs to improve BITS webmaster monitoring system, needs novel synchronization node to set
Standby, conventional satellite signal receiver is directly equipped with CV, directly (mesh at synchronous base node device
Front Primary Clock) realize regarding altogether calibration, it is ensured that and the performance of synchronous operation entirely, this is more to optimize, more
Cost-effective scheme.
As shown in Figure 4, the one being provided by the embodiment of the present invention 3 can verify that adjustable full synchronous communication
Web frame schematic diagram, including one regards secondary station 32 altogether regarding benchmark main website 31 and some altogether, wherein:
Described altogether regarding benchmark main website 31, time and frequency standard system, common-view receiver, data communication are set eventually
System is assessed in end and performance monitoring；
Described time and frequency standard system is used for producing standard time and frequency signal；
Described common-view receiver is for synchronizing in satellite common vision mode depending on secondary station 32 altogether with described；
Described data communication terminal is used for and performance check and evaluation system data communication；
System is assessed in described performance monitoring, for regarding secondary station 32 and time and frequency standard system altogether according to described
Clock error data after comparison, processes according to relevant criterion calculating and obtains net synchronization capability evaluating data, it is achieved
Can verify that of high-precise synchronization technical performance index；
Described altogether regarding secondary station 32, for being entered with described time and frequency standard system by satellite common vision mode respectively
Row comparison, and comparison result is sent to net synchronization capability monitoring and evaluating system；By described deviation and assessment knot
Fruit adjusts local measured clock, it is achieved the adjustable of clock signal, and realizes communication synchronization net on this basis
Full synchronization.
Further, described network also includes some common synchronization base stations 33, for described in one or more
Synchronize depending on secondary station 32 altogether, it is achieved the full synchronization of communication synchronization net.
In sum, the embodiment of the present invention arranges performance monitoring assessment system and time and frequency standard system；Will
The whole network all Primary reference clocks PRC clock is respectively by entering with described time and frequency standard system depending on mode altogether
Row comparison；According to the absolute error obtaining after described PRC and time and frequency standard systematic comparison, described
Calculating in performance monitoring assessment system processes and obtains relative error；Adjust each PRC by described relative error
Clock, it is achieved the full synchronization of communication synchronization net.The scheme of the embodiment of the present invention, regards altogether based on GNSS and surveys
The full synchronous method of communication synchronization net of amount technology, sets up networking, the time and frequency measurement system of concentration and high accuracy
Time-frequency distribution system, by performance monitoring assessment system and a high-precision Standard time and frequency system, it is achieved with
The trusted checking of step performance quality, and realize the full synchronous operation of whole Synchronization Network on this basis.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or meter
Calculation machine program product.Therefore, the present invention can use complete hardware embodiment, complete software implementation or knot
The form of the embodiment in terms of closing software and hardware.And, the present invention can use and wherein wrap one or more
Computer-usable storage medium containing computer usable program code (including but not limited to magnetic disc store and
Optical memory etc.) form of the upper computer program implemented.
The present invention is with reference to method according to embodiments of the present invention, equipment (system) and computer program product
The flow chart of product and/or block diagram describe.It should be understood that can by computer program instructions flowchart and
/ or block diagram in each flow process and/or the flow process in square frame and flow chart and/or block diagram and/
Or the combination of square frame.These computer program instructions can be provided to all-purpose computer, special-purpose computer, embed
The processor of formula processor or other programmable data processing device is to produce a machine so that by calculating
The instruction that the processor of machine or other programmable data processing device performs produces for realizing at flow chart one
The device of the function specified in individual flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set
In the standby computer-readable memory working in a specific way so that be stored in this computer-readable memory
Instruction produce and include the manufacture of command device, this command device realizes in one flow process or multiple of flow chart
The function specified in flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, makes
Sequence of operations step must be performed to produce computer implemented place on computer or other programmable devices
Reason, thus the instruction performing on computer or other programmable devices provides for realizing flow chart one
The step of the function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
The spirit and scope of invention.So, if these modifications of the present invention and modification belong to the claims in the present invention
And within the scope of equivalent technologies, then the present invention is also intended to comprise these changes and modification.
Claims (10)
1. one kind can verify that adjustable full synchronous communication network implementation method, it is characterised in that described method
Including:
Time and frequency standard system and performance monitoring assessment system are set；
By all for communication synchronization net Primary reference clock PRC and local primary reference LPR respectively by satellite altogether
Carry out the time deviation of Long baselines, frequency accuracy performance indications depending on mode and described time and frequency standard system
Comparison；
According to the clock obtaining after described PRC, LPR and time and frequency standard system performance index comparison by mistake
Difference, in described performance monitoring assessment system, analyzing and processing obtains assessing data；Realize PRC with described when
Between effective checking of simultaneous techniques performance between frequency standard, real-time comparison；
Clock by described clocking error and assessment data point reuse each PRC, LPR, it is achieved PRC and institute
State the adjustable between time and frequency standard；Realize can verify that of communication synchronization net, adjustable and entirely synchronize.
2. the method for claim 1, it is characterised in that described method also includes:
Described satellite common vision mode uses GPS GNSS satellite common-view receiver, and 1: 1
Use in pairs or 1: N multiple spot uses simultaneously；
One satellite common vision receiver be arranged at time and frequency standard system place altogether regard main website；Each PRC
Or LPR arranges and regards altogether DVB as secondary station；All participation common-view modes altogether regard satellite reception
Machine operationally needs same GNSS satellite of tracking lock.
3. the method for claim 1, it is characterised in that described method also includes:
By clock frequency or the time of described comparison error transfer factor each PRC, LPR, make between each clock
Frequency departure reaches predetermined requirement；It is preferably better than ± 1E-13.
4. the method for claim 1, it is characterised in that described method also includes:
Clock error data between described PRC and LPR and time and frequency standard system passes through data communication
System transfers assesses system to performance monitoring；
Described is to utilize GNSS satellite as media depending on mode altogether, completes PRC, LPR and temporal frequency mark
Long baselines frequency apart from each other between Barebone or Time transfer receiver, now common-view receiver must work
In regarding tracking mode altogether, follow the tracks of same satellite.
5. the method for claim 1, it is characterised in that described method also includes:
With time and frequency standard system as comparison basis, when first obtaining Primary reference clock PRC or zonal basis
Time (frequency) deviation between clock LPR and time and frequency standard system, then commented by net synchronization capability monitoring
Estimate network analysis process, regulate and control PRC and LPR according to relative error and assessment result, reduce comparison pair
Frequency departure between as is to reach the purpose of synchronization.
6. one kind can verify that adjustable full synchronous network system, it is characterised in that include:
Primary reference clock PRC, for by all for the whole network Primary reference clock PRC clocks respectively by satellite altogether
Carry out the time deviation performance indications comparison of Long baselines depending on mode and described time and frequency standard system, and will compare
It is sent to performance monitoring assessment system to result；
Time and frequency standard system, is used for producing standard time and frequency signal；
System is assessed in performance monitoring, for according to described PRC, LPR and other objects to be measured and temporal frequency
The clocking error obtaining after modular system comparison, is computed process and obtains performance data；By described clock by mistake
Difference adjusts time and the frequency of each PRC, LPR etc., it is achieved the full synchronization of communication synchronization net.
7. system as claimed in claim 6, it is characterised in that described system also includes:
Altogether time and frequency standard system, common-view receiver and performance monitoring assessment system, number are being set depending on main website
According to communication terminal；
Each described Primary reference clock PRC or local primary reference LPR arranges a common-view receiver and leads to
Letter terminal, as altogether regarding secondary station.
All of common-view receiver operationally follows the tracks of same GNSS satellite.
8. system as claimed in claim 6, it is characterised in that described system also includes:
Number is measured between Primary reference clock PRC, local primary reference LPR etc. and time and frequency standard system
According to assess system communication by datel circuit and corresponding data communication terminal with performance monitoring.
9. one kind can verify that adjustable full Synchronization Network, it is characterised in that include that regards a benchmark main website altogether
And some altogether regard secondary station, wherein:
Described altogether regarding benchmark main website, time and frequency standard system, common-view receiver and performance monitoring assessment are set
System；
Described time and frequency standard system is used for producing standard time or frequency signal；
Described common-view receiver is for working in satellite common vision mode depending on secondary station altogether with described；
System is assessed in described performance monitoring, is a time interval instrumentation, is also a special Performance Evaluation
Software, for according to described clock error data after secondary station with time and frequency standard system comparison altogether, depending on
Process according to relevant criterion calculating and obtain net synchronization capability evaluating data, it is achieved high-precise synchronization technical performance index
Can verify that；
Described altogether regarding secondary station, for being carried out with described time and frequency standard system by satellite common vision mode respectively
Comparison, and comparison result is sent to net synchronization capability monitoring and evaluating system；By described deviation and assessment result
Adjust local measured clock, it is achieved the adjustable of clock signal, and realize communication synchronization net on this basis
Full synchronization.
10. can verify that full Synchronization Network as claimed in claim 9, it is characterised in that described network also includes
No less than a common synchronization station, for synchronizing regarding secondary station altogether with one or more described, it is achieved communication synchronization
The full synchronization of net.
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