CN105589328A - Time synchronization test method and apparatus, and time synchronization testing precision determination method and apparatus - Google Patents
Time synchronization test method and apparatus, and time synchronization testing precision determination method and apparatus Download PDFInfo
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- CN105589328A CN105589328A CN201410569576.XA CN201410569576A CN105589328A CN 105589328 A CN105589328 A CN 105589328A CN 201410569576 A CN201410569576 A CN 201410569576A CN 105589328 A CN105589328 A CN 105589328A
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Abstract
The invention discloses a time synchronization test method. The method comprises: before a satellite time service module is not locked by a local clock, a satellite time service signal is used as a reference signal; and according to the satellite time service signal and a tested signal, time precision of the tested signal is determined. In addition, the invention also discloses a time synchronization testing precision determination method, a time synchronization test apparatus, and a time synchronization testing precision determination apparatus.
Description
Technical field
The present invention relates to measuring technology, relate in particular to a kind of time synchronized method of testing, the definite side of measuring accuracyMethod and device.
Background technology
Unified, precise time all has demand and application in fields such as mobile communication, electric power, finance, sensings.Ensure the degree of accuracy of temporal information, must test temporal information by high-precision test macro.
Traditional time synchronized testing equipment kind is more, and measuring accuracy and performance are also different. Conventionally adoptWith global positioning system (GPS, GlobalPositioningSystem) satellite clock source or Beidou satellite navigationThe technology of the synchronous local clock (such as crystal oscillator, rubidium clock etc.) of system (BD), by receiving satellite signal,Tame output pulse signal after local clock with satellite clock, by measured signal and output pulse signalComparison draws time test precision.
But there is certain defect in this method: in the time measuring, first satellite time transfer module completes to start searches starAfter completing again self 3D location, enter accurate time transmission pattern, and local clock as need to completing preheating, is treated by rubidium clock etc.Self frequency reaches after stable and just can lock onto on the 1PPS signal of satellite time transfer module output, and this lockedJourney needs the offer time of 40 minutes to 1 hour, and locking time is oversize. Cause instrument in use, engineeringPersonnel need to wait at testing location always, until instrument locking could start to measure.
Summary of the invention
For solving the technical problem of existing existence, the embodiment of the present invention provide a kind of time synchronized method of testing,Measuring accuracy is determined method and device.
The embodiment of the present invention provides a kind of time synchronized method of testing, comprising:
Before local clock non-locking satellite time transfer module, using satellite time transfer signal as reference signal;
According to described satellite time transfer signal and measured signal, determine the time precision of current described measured signal.
In such scheme, described according to described satellite time transfer signal and measured signal, determine current described testedWhen the time precision of signal, described method also comprises:
In real time local clock signal and described satellite time transfer signal are carried out to phase bit comparison, obtain phase deviation orderRow;
According to described phase deviation sequence, determine the measuring accuracy of current system.
In such scheme, described according to described phase deviation sequence, determine the measuring accuracy of current system, for:
Adopt statistical method, utilize described phase deviation sequence to determine the frequency drift rate of described local clock;
Utilize described phase deviation sequence and described frequency drift rate, determine described satellite time transfer signal and standardThe peak value of the poor and error peak of mean square of error between time.
In such scheme, described method also comprises:
Preserve described frequency drift rate.
In such scheme, described method also comprises:
Export definite measuring accuracy.
In such scheme, described method also comprises:
Described local clock locks after described satellite time transfer module, by described local clock locking and optimization processAfter signal as reference signal;
Correspondingly, according to signal and the described measured signal of the described local clock locking after optimizing, determine and work asThe time precision of front described measured signal.
The embodiment of the present invention also provides a kind of time synchronized measuring accuracy to determine method, comprising:
In real time local clock signal and described satellite time transfer signal are carried out to phase bit comparison, obtain phase deviation orderRow;
According to described phase deviation sequence, determine the measuring accuracy of current system.
In such scheme, described according to described phase deviation sequence, determine the measuring accuracy of current system, for:
Adopt statistical method, utilize described phase deviation sequence to determine the frequency drift rate of described local clock;
Utilize described phase deviation sequence and described frequency drift rate, determine described satellite time transfer signal and standardThe peak value of the poor and error peak of mean square of error between time.
In such scheme, described method also comprises:
Preserve described frequency drift rate.
In such scheme, described method also comprises:
Export definite measuring accuracy.
The embodiment of the present invention provides again a kind of time synchronized testing arrangement, comprising: selected cell and test are singleUnit; Wherein,
Described selected cell, before local clock non-locking satellite time transfer module, by satellite time transfer signalAs reference signal;
Described test cell, for according to described satellite time transfer signal and measured signal, determines current described quiltSurvey the time precision of signal.
In such scheme, described device also comprises: comparing unit and measuring accuracy determining unit; Wherein,
Described comparing unit, for carrying out phase place ratio by local clock signal and described satellite time transfer signal in real time, obtain phase deviation sequence;
Described measuring accuracy determining unit, for according to described phase deviation sequence, determines the survey of current systemExamination precision.
In such scheme, described measuring accuracy determining unit also comprises: the first determination module and second is determined mouldPiece; Wherein,
Described the first determination module, for adopting statistical method, utilize described phase deviation sequence determine described inThe frequency drift rate of local clock;
Described the second determination module, for utilizing described phase deviation sequence and described frequency drift rate, determinesDescribed satellite time transfer signal and the peak value of the poor and error peak of mean square of error between the standard time.
In such scheme, described device also comprises: memory cell, and for storing described frequency drift rate.
In such scheme, described device also comprises: output unit, and for determining the measuring accuracy of current systemAfter, export definite measuring accuracy.
In such scheme, described selected cell, also locks described satellite time transfer module for described local clockAfter, using the signal after described local clock locking and optimization process as reference signal;
Correspondingly, described test cell, also for according to the signal of the described local clock locking after optimizing andDescribed measured signal, determines the time precision of current described measured signal.
The embodiment of the present invention also provides a kind of time synchronized measuring accuracy determining device, comprising: comparing unitAnd measuring accuracy determining unit; Wherein,
Described comparing unit, for carrying out phase place ratio by local clock signal and described satellite time transfer signal in real time, obtain phase deviation sequence;
Described measuring accuracy determining unit, for according to described phase deviation sequence, determines the survey of current systemExamination precision.
In such scheme, described measuring accuracy determining unit also comprises: the first determination module and second is determined mouldPiece; Wherein,
Described the first determination module, for adopting statistical method, utilize described phase deviation sequence determine described inThe frequency drift rate of local clock;
Described the second determination module, for utilizing described phase deviation sequence and described frequency drift rate, determinesDescribed satellite time transfer signal and the peak value of the poor and error peak of mean square of error between the standard time.
In such scheme, described device also comprises: memory cell, and for storing described frequency drift rate.
In such scheme, described device also comprises: output unit, and for determining the measuring accuracy of current systemAfter, export definite measuring accuracy.
Time synchronized method of testing, measuring accuracy that the embodiment of the present invention provides are determined method and device, this localityBefore clock non-locking satellite time transfer module, using satellite time transfer signal as reference signal; According to described satelliteTime signal and measured signal, determine the time precision of current described measured signal, so, testing equipment withoutNeed the locking of waiting for local clock can start to test, greatly shortened the start-up time of test, can be fastSpeed provides time precision test result for tester.
In addition, utilize described phase deviation sequence, determine after the frequency drift rate of described local clock, preserveDescribed frequency drift rate, while test, can directly transfer the described frequency drift rate of storage next time, directly comes reallyDetermine the measuring accuracy of current system, like this, can effectively reduce the required sampling of next estimation measuring accuracyThe quantity of phase deviation, has further reduced the testing time, can be fast for tester provides accuracy of instrument letterBreath.
Brief description of the drawings
In accompanying drawing (it is not necessarily drawn in proportion), similar Reference numeral can be at different viewsThe parts that middle description is similar. The similar Reference numeral with different letter suffix can represent the difference of similar partsExample. With example, unrestriced mode shows each embodiment discussed herein to accompanying drawing substantially.
Fig. 1 is one time of embodiment of the present invention synchronous detecting method schematic flow sheet;
Fig. 2 is the embodiment of the present invention two time synchronized testing arrangement structural representations;
Fig. 3 is the embodiment of the present invention three time synchronized testing arrangement structural representations;
Fig. 4 is that the embodiment of the present invention four time synchronized measuring accuracies are determined method flow schematic diagram;
Fig. 5 is the embodiment of the present invention five time synchronized measuring accuracy determining device structural representations.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail again.
From the description of background technology, can find out, in existing time synchronized test macro, at local clockBefore non-locking satellite time transfer module, engineering staff need to wait at testing location always, until instrument lockingCould start to measure.
In addition, traditional time synchronized testing equipment can not provide measuring accuracy scope in test, givesTester has brought inconvenience;
In addition, the central processing unit (CPU, CentralProcessingUnit) of testing equipment is not depositedStore up each error amount, all will recalculate at every turn and adjust each error amount, increased the testing time.
Based on this, in various embodiment of the present invention: before local clock non-locking satellite time transfer module,Using satellite time transfer signal as reference signal; According to described satellite time transfer signal and measured signal, determine currentThe time precision of described measured signal.
Below in conjunction with drawings and Examples, the present invention is described in further detail again.
Embodiment mono-
The present embodiment time synchronized method of testing, as shown in Figure 1, comprises the following steps:
Step 101: before local clock non-locking satellite time transfer module, using satellite time transfer signal as benchmarkSignal;
Here, described satellite time transfer signal refers to the signal of satellite time transfer module output, described satellite time transfer letterNumber comprise: 1PPS signal and current time (TOD) signal.
When practical application, generally described satellite time transfer signal first can be carried out to filtering processing, after filtering is processedSatellite time transfer signal as reference signal.
Described local clock can be crystal oscillator or rubidium clock etc.
Step 102: according to described satellite time transfer signal and measured signal, determine current described measured signalTime precision.
Here, described according to described satellite time transfer signal and measured signal, determine current described measured signalWhen time precision, the method can also comprise: in real time local clock signal and described satellite time transfer signal are enteredLine phase comparison, obtains phase deviation sequence; According to described phase deviation sequence, determine the survey of current systemExamination precision.
Wherein, described according to described phase deviation sequence, determine the measuring accuracy of current system, be specially:
Adopt statistical method, utilize described phase deviation sequence to determine the frequency drift rate of described local clock;
Utilize described phase deviation sequence and described frequency drift rate, determine described satellite time transfer signal and standardThe peak value of the poor and error peak of mean square of error between time.
Here, can also preserve described frequency drift rate, when test next time, can directly transfer storage described inFrequency drift rate, directly carrys out to determine the measuring accuracy of current system, like this, has reduced next estimation test essenceSpend the quantity of required sampling phase deviation.
Determine that, after the measuring accuracy of current system, the method can also comprise: export definite measuring accuracy;Like this, the measuring accuracy of demonstration is for tester's reference; Tester determines and surveys according to the measuring accuracy showingWhen examination precision cannot meet current test request, can select to wait for a period of time, wait measuring accuracy to meet and work asAfter front test request, then start to test.
The method can also comprise:
Described local clock locks after described satellite time transfer module, by described local clock locking and optimization processAfter signal as reference signal;
Correspondingly, according to signal and the described measured signal of the described local clock locking after optimizing, determine and work asThe time precision of front described measured signal, like this, can improve measuring accuracy, and is losing satellite time transfer signalTime, stability and timekeeping performance can be provided.
Here,, when practical application, described optimization process comprises carries out frequency departure to described local clock signalCorrect processing etc.
The time synchronized method of testing that the embodiment of the present invention provides, local clock non-locking satellite time transfer module itBefore, using satellite time transfer signal as reference signal; According to described satellite time transfer signal and measured signal, determineThe time precision of current described measured signal, so, testing equipment is without the locking of waiting for local clockStart to test, greatly shortened the start-up time of test, can be fast for tester provides time precisionTest result.
According to described satellite time transfer signal and measured signal, while determining the time precision of current described measured signal,In real time local clock signal and described satellite time transfer signal are carried out to phase bit comparison, obtain phase deviation sequence;According to described phase deviation sequence, determine the measuring accuracy of current system, and export definite measuring accuracy;Like this, in the time that tester determines that according to the measuring accuracy showing measuring accuracy cannot meet current test request,Can select to wait for a period of time, wait measuring accuracy to meet after current test request, then start to test.
Utilize described phase deviation sequence, determine after the frequency drift rate of described local clock, preserve described frequencyRate drift rate, while test, can directly transfer the described frequency drift rate of storage next time, directly comes to determine currentThe measuring accuracy of system, and frequency drift rate is to determine based on the sampled data in certain hour, like this,Can effectively reduce the quantity of estimating the required sampling phase deviation of measuring accuracy next time, further reduce surveyThe examination time, can be fast for tester provides accuracy of instrument information.
Embodiment bis-
For realizing the method for embodiment mono-, the present embodiment provides a kind of time synchronized testing arrangement, as Fig. 2 instituteShow, this device comprises: selected cell 21 and test cell 22; Wherein,
Described selected cell 21, before local clock non-locking satellite time transfer module, believes satellite time transferNumber as reference signal;
Described test cell 22, for according to described satellite time transfer signal and measured signal, determine current described inThe time precision of measured signal.
Wherein, described satellite time transfer signal refers to the signal of satellite time transfer module output, described satellite time transfer letterNumber comprise: 1PPS signal and TOD signal.
When practical application, generally described satellite time transfer signal first can be carried out to filtering processing, after filtering is processedSatellite time transfer signal as reference signal.
Described local clock can be crystal oscillator or rubidium clock etc.
This device can also comprise: comparing unit and measuring accuracy determining unit; Wherein,
Described comparing unit, for carrying out phase place ratio by local clock signal and described satellite time transfer signal in real time, obtain phase deviation sequence;
Described measuring accuracy determining unit, for according to described phase deviation sequence, determines the survey of current systemExamination precision.
Here, described measuring accuracy determining unit can also comprise: the first determination module and the second determination module;Wherein,
Described the first determination module, for adopting statistical method, utilize described phase deviation sequence determine described inThe frequency drift rate of local clock;
Described the second determination module, for utilizing described phase deviation sequence and described frequency drift rate, determinesDescribed satellite time transfer signal and the peak value of the poor and error peak of mean square of error between the standard time.
Wherein, this device can also comprise: memory cell, for storing described frequency drift rate, survey next timeWhen examination, can directly transfer the described frequency drift rate of storage, directly carry out to determine the measuring accuracy of current system,Like this, reduced the quantity of the required sampling phase deviation of next estimation measuring accuracy.
This device can also comprise: output unit, for determining after the measuring accuracy of current system, output reallyFixed measuring accuracy; Like this, the measuring accuracy of demonstration is for tester's reference; Tester according to showMeasuring accuracy is determined when measuring accuracy cannot meet current test request, can select to wait for a period of time, etc.Measuring accuracy meets after current test request, then starts to test.
Described selected cell 21, also locks after described satellite time transfer module for described local clock, described in inciting somebody to actionSignal after local clock locking and optimization process is as reference signal;
Correspondingly, described test cell 22, the also signal for locking according to the described local clock after optimizingAnd described measured signal, determine and the time precision of current described measured signal like this, can improve measuring accuracy,And in the time losing satellite time transfer signal, can provide stability and timekeeping performance.
Here,, when practical application, described optimization process comprises carries out frequency departure to described local clock signalCorrect processing etc.
When practical application, described selected cell 21, described test cell 22, described comparing unit, described surveyExamination determine precision unit, described the first determination module and described the second determination module can be surveyed by time synchronizedCentral processing unit (CPU, CentralProcessingUnit) in electricity testing device, digital signal processor (DSP,Or programmable logic array (FPGA, Field-ProgrammableGate DigitalSignalProcessor)Array) realize; Described memory cell can be realized by the memory in time synchronized testing arrangement; Described outputUnit can be realized by the display in synchronous testing device.
The time synchronized testing arrangement that the embodiment of the present invention provides, local clock non-locking satellite time transfer module itBefore, described selected cell 21 is using satellite time transfer signal as reference signal; Described test cell 22 is according to instituteState satellite time transfer signal and measured signal, determine the time precision of current described measured signal, so, testEquipment can start to test without the locking of waiting for local clock, has greatly shortened the start-up time of test,Can be fast for tester provides time precision test result.
According to described satellite time transfer signal and measured signal, while determining the time precision of current described measured signal,Described comparing unit carries out phase bit comparison by local clock signal and described satellite time transfer signal in real time, obtains phaseBiased difference sequence; Described measuring accuracy determining unit is according to described phase deviation sequence, determines current systemMeasuring accuracy, described output unit is exported definite measuring accuracy; Like this, when tester according to showMeasuring accuracy is determined when measuring accuracy cannot meet current test request, can select to wait for a period of time, etc.Measuring accuracy meets after current test request, then starts to test.
Utilize described phase deviation sequence, determine after the frequency drift rate of described local clock, memory cell is protectedDeposit described frequency drift rate, while test, can directly transfer the described frequency drift rate of storage next time, directly comesDetermine the measuring accuracy of current system, and frequency drift rate is to determine based on the sampled data in certain hour,Like this, can effectively reduce the quantity of estimating the required sampling phase deviation of measuring accuracy next time, further fallThe low testing time, can be fast for tester provides accuracy of instrument information.
Embodiment tri-
When the present embodiment is practical application, time synchronized testing arrangement forms as shown in Figure 3, comprising: dataProcessing unit, selected cell, test cell, display unit, comparing unit, CPU, frequency multiplicationUnit and counting unit.
Below in conjunction with Fig. 3, describe the processing procedure of time synchronized testing arrangement in detail.
When test, first satellite time transfer module starts searches star, and enters essence completing behind self 3D locationClose time service pattern (about 1min), data processing unit carries out filtering processing to the signal of satellite time transfer module output,Output 1PPS signal and TOD signal; Now, this signal is divided into two-way output, and a road signal is single by selectingUnit enters test cell, and another road signal enters comparison module; The signal of this two-way output is identical, andAll comprise 1PPS signal and TOD signal;
The reference signal of selected cell for selecting test system and test to use; Particularly, at local clock notBefore locking, 1PPS signal and the TOD signal of the output of time service satellite modules are first selected, make as testWith reference signal, selected cell is using satellite time transfer signal as reference signal, and exports test cell to,Test cell compares satellite time transfer signal and measured signal, determines the time of current described measured signalPrecision, and provide current described measured signal at display unit (being equivalent to the output unit in embodiment bis-)Time precision; Like this, equipment is without waiting for the locking of local clock and the calculating of CPUCan start to test, the start-up time that has greatly shortened test also can be fast for tester provides testedThe time precision information of signal and satellite time transfer signal;
When completing preheating, local clock (such as crystal oscillator, rubidium clock etc.) waits to reach self frequency stabilization, and lockingWhen the satellite time transfer module, selected cell be automatically transformed into use local clock locking and CPU excellentChange signal after treatment as reference signal; When practical application, can complete when local clock by selected cellPreheating waits to reach self frequency stabilization, and locks onto the corresponding switching condition of satellite time transfer module (such as surveyThe examination instrument available machine time reaches preset value etc.) automatically cut from the satellite time transfer signal of reception & disposal unit output downBe changed to and receive the signal that CPU is exported; Correspondingly, test cell is by central processing unit for processingAfter signal and measured signal compare, determine the time precision of current described measured signal, and showUnit (being equivalent to the output unit in embodiment bis-) provides the time precision of current described measured signal; ThisSample, can improve measuring accuracy, and in the time losing satellite time transfer signal, can provide stability and timekeeping performance.
Wherein, described satellite time transfer signal and measured signal are compared, to determine current described tested letterNumber time precision time, comparing unit carries out phase place by local clock signal and described satellite time transfer signal in real timeRelatively, obtain phase deviation sequence; Central authorities process processing unit and (are equivalent to the measuring accuracy in embodiment bis-Determining unit) according to described phase deviation sequence, determine the measuring accuracy of current system.
Here, under normal running conditions, the error Normal Distribution of satellite time transfer module clock; And it is localClock is because the effect of frequency output components and parts itself and environmental factor can cause the drift of frequency, this byThe one direction of the average frequency that the aging effect of frequency source internal components causes changes, and has the spy of systematic errorProperty. Therefore, CPU can estimate the error of the two, thereby provides reference signal waveform fluctuationThe peak value at peak (below the peak value in formula (3)), simultaneously according to estimation error correction or calibration when localThe degree of accuracy of the reference signal that clock produces.
CPU adopts statistical method, utilizes described phase deviation sequence to determine described local clockFrequency drift rate; And utilize described phase deviation sequence and described frequency drift rate, determine described satellite time transferSignal and the peak value of the poor and error peak of mean square of error between the standard time.
Here, utilize formula express determine described frequency drift rate and determine described satellite time transfer signal withThe peak value of the poor and error peak of mean square of error between standard time, has:
Suppose that k is the frequency drift rate of local clock; piFor tiThe relative phase of measured frequency of moment; tiForMeasure the moment of relative phase, i.e. timing; Have:
The frequency drift rate of local clock is estimated to draw by formula (1):
Estimate after the frequency drift rate of local clock, adopt formula (2) estimate described satellite time transfer signal withBetween standard time, mean square of error is poor:
Wherein,X is gate time corresponding to the sampling;
Correspondingly, adopt formula (3) to estimate described satellite time transfer signal and the peak of error peak between the standard timeValue:
Vpp＝max(pi-kx-b)-min(pi-kx-b)(3)
i＝1,2,...,n
Wherein, max () represents the maximum in sampling sequence, and min () represents the minimum of a value in sampling sequence.
CPU by the described satellite time transfer signal estimating and between the standard time mean square of error poorAnd the peak value V of error peakppSend into display unit (being equivalent to the output unit in embodiment bis-) and show,For tester's reference. Along with the increase in time of sampling phase deviation, mean square deviationAnd the peak of error peakValue VppCan real-time update, if measuring accuracy estimated value is (And Vpp) cannot meet current test request,Tester can select to wait for a period of time, and waits measuring accuracy estimated value to meet after current test request, thenStart to test.
The frequency drift rate k of the local clock that meanwhile, this measuring and calculation obtains can be in CPUStorage, like this, while test, can directly transfer the described frequency drift rate k of storage next time, directly calculatesAnd Vpp, and frequency drift rate is to determine based on the sampled data in certain hour, like this, has reduced next timeThe quantity of estimating the required sampling phase deviation of measuring accuracy, has further shortened the testing time.
Wherein, frequency multiplication unit, is mainly used in determining that whether the frequency of local clock and comparing unit needs is different;Technical unit, is mainly used in the frequency information based on local clock, counts to get temporal information, defends in loss, can continue acquisition time time service for instrument when in star the source.
Embodiment tetra-
The method that the present embodiment time synchronized measuring accuracy is definite, as shown in Figure 4, comprises the following steps:
Step 401: in real time local clock signal and described satellite time transfer signal are carried out to phase bit comparison, obtainPhase deviation sequence;
Step 402: according to described phase deviation sequence, determine the measuring accuracy of current system.
Particularly, adopt statistical method, utilize described phase deviation sequence to determine the frequency of described local clockDrift rate;
Utilize described phase deviation sequence and described frequency drift rate, determine described satellite time transfer signal and standardThe peak value of the poor and error peak of mean square of error between time.
Here, can also preserve described frequency drift rate, when test next time, can directly transfer storage described inFrequency drift rate, directly carrys out to determine the measuring accuracy of current system, like this, has reduced next estimation test essenceSpend the quantity of required sampling phase deviation.
Determine that, after the measuring accuracy of current system, the method can also comprise: export definite measuring accuracy;Like this, the measuring accuracy of demonstration is for tester's reference; Tester determines and surveys according to the measuring accuracy showingWhen examination precision cannot meet current test request, can select to wait for a period of time, wait measuring accuracy to meet and work asAfter front test request, then start to test.
The time synchronized measuring accuracy that the embodiment of the present invention provides is determined method, in real time by local clock signal withDescribed satellite time transfer signal carries out phase bit comparison, obtains phase deviation sequence; According to described phase deviation sequence,Determine the measuring accuracy of current system, like this, when tester determines test essence according to the measuring accuracy showingWhen degree cannot meet current test request, can select to wait for a period of time, wait measuring accuracy to meet and work as before measurementAfter examination requires, then start to test.
In addition, utilize described phase deviation sequence, determine after the frequency drift rate of described local clock, preserveDescribed frequency drift rate, while test, can directly transfer the described frequency drift rate of storage next time, directly comes reallyDetermine the measuring accuracy of current system, and frequency drift rate is to determine based on the sampled data in certain hour,Like this, can effectively reduce the quantity of estimating the required sampling phase deviation of measuring accuracy next time, further fallThe low testing time, can be fast for tester provides accuracy of instrument information.
Embodiment five
For realizing the method for embodiment tetra-, the present embodiment provides a kind of time synchronized measuring accuracy determining device,As shown in Figure 5, this device comprises: comparing unit 51 and measuring accuracy determining unit 52; Wherein,
Described comparing unit 51, for carrying out phase place by local clock signal and described satellite time transfer signal in real timeRelatively, obtain phase deviation sequence;
Described measuring accuracy determining unit 52, for according to described phase deviation sequence, determines current systemMeasuring accuracy.
Here, described measuring accuracy determining unit can also comprise: the first determination module and the second determination module;Wherein,
Described the first determination module, for adopting statistical method, utilize described phase deviation sequence determine described inThe frequency drift rate of local clock;
Described the second determination module, for utilizing described phase deviation sequence and described frequency drift rate, determinesDescribed satellite time transfer signal and the peak value of the poor and error peak of mean square of error between the standard time.
Wherein, this device can also comprise: memory cell, for storing described frequency drift rate, survey next timeWhen examination, can directly transfer the described frequency drift rate of storage, directly carry out to determine the measuring accuracy of current system,Like this, reduced the quantity of the required sampling phase deviation of next estimation measuring accuracy.
This device can also comprise: output unit, for determining after the measuring accuracy of current system, output reallyFixed measuring accuracy; Like this, the measuring accuracy of demonstration is for tester's reference; Tester according to showMeasuring accuracy is determined when measuring accuracy cannot meet current test request, can select to wait for a period of time, etc.Measuring accuracy meets after current test request, then starts to test.
When practical application, described comparing unit, described measuring accuracy determining unit, described the first determination module,And described the second determination module can be by CPU, DSP in time synchronized measuring accuracy determining device orFPGA realizes; Described memory cell can be realized by the memory in time synchronized measuring accuracy determining device;Described output unit can be realized by the display in synchronism detection determine precision device.
The time synchronized measuring accuracy determining device that the present embodiment provides, comparing unit 51 is in real time by local clockSignal carries out phase bit comparison with described satellite time transfer signal, obtains phase deviation sequence; Measuring accuracy is determined singleUnit 52, according to described phase deviation sequence, determines the measuring accuracy of current system, like this, and when tester's rootMeasuring accuracy is according to the show determined when measuring accuracy cannot meet current test request, can select to wait for one sectionTime, wait measuring accuracy to meet after current test request, then start to test.
In addition, utilize described phase deviation sequence, determine after the frequency drift rate of described local clock, storageDescribed frequency drift rate is preserved in unit, and while test, can directly transfer the described frequency drift rate of storage next time,Directly carry out to determine the measuring accuracy of current system, and frequency drift rate is the sampled data based in certain hourDetermine, like this, can effectively reduce the quantity of estimating the required sampling phase deviation of measuring accuracy next time,Further reduce the testing time, can be fast for tester provides accuracy of instrument information.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or meterCalculation machine program product. Therefore, the present invention can adopt hardware implementation example, implement software example or in conjunction with software andThe form of the embodiment of hardware aspect. And the present invention can adopt one or more and wherein include calculatingThe computer-usable storage medium of machine usable program code (includes but not limited to magnetic disc store and optical storageDevice etc.) form of the upper computer program of implementing.
The present invention is that reference is according to the method for the embodiment of the present invention, equipment (system) and computer programFlow chart and/or block diagram describe. Should understand can be by computer program instructions realization flow figure and/or sideFlow process in each flow process in block diagram and/or square frame and flow chart and/or block diagram and/or the knot of square frameClose. Can provide these computer program instructions to all-purpose computer, special-purpose computer, Embedded Processor orThe processor of other programmable data processing device is to produce a machine, and making can by computer or otherThe instruction that the processor of programming data treatment facility is carried out produces for realizing in flow process or multiple of flow chartThe device of the function of specifying in square frame of flow process and/or block diagram or multiple square frame.
These computer program instructions also can be stored in can vectoring computer or other programmable data processing deviceIn computer-readable memory with ad hoc fashion work, make to be stored in this computer-readable memoryInstruction produces the manufacture that comprises command device, and this command device is realized at flow process of flow chart or multiple streamThe function of specifying in square frame of journey and/or block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, makeMust on computer or other programmable devices, carry out sequence of operations step to produce computer implemented placeReason, thus the instruction of carrying out on computer or other programmable devices is provided for realizing one of flow chartThe step of the function of specifying in square frame of flow process or multiple flow process and/or block diagram or multiple square frame.
The above, be only preferred embodiment of the present invention, is not intended to limit protection model of the present inventionEnclose.
Claims (20)
1. a time synchronized method of testing, is characterized in that, described method comprises:
Before local clock non-locking satellite time transfer module, using satellite time transfer signal as reference signal;
According to described satellite time transfer signal and measured signal, determine the time precision of current described measured signal.
2. method according to claim 1, is characterized in that, described according to described satellite time transfer signalAnd measured signal, while determining the time precision of current described measured signal, described method also comprises:
In real time local clock signal and described satellite time transfer signal are carried out to phase bit comparison, obtain phase deviation orderRow;
According to described phase deviation sequence, determine the measuring accuracy of current system.
3. method according to claim 2, is characterized in that, described according to described phase deviation sequence,Determine the measuring accuracy of current system, for:
Adopt statistical method, utilize described phase deviation sequence to determine the frequency drift rate of described local clock;
Utilize described phase deviation sequence and described frequency drift rate, determine described satellite time transfer signal and standardThe peak value of the poor and error peak of mean square of error between time.
4. method according to claim 3, is characterized in that, described method also comprises:
Preserve described frequency drift rate.
5. method according to claim 2, is characterized in that, described method also comprises:
Export definite measuring accuracy.
6. method according to claim 1, is characterized in that, described method also comprises:
Described local clock locks after described satellite time transfer module, by described local clock locking and optimization processAfter signal as reference signal;
Correspondingly, according to signal and the described measured signal of the described local clock locking after optimizing, determine and work asThe time precision of front described measured signal.
7. time synchronized measuring accuracy is determined a method, it is characterized in that, described method comprises:
In real time local clock signal and described satellite time transfer signal are carried out to phase bit comparison, obtain phase deviation orderRow;
According to described phase deviation sequence, determine the measuring accuracy of current system.
8. method according to claim 7, is characterized in that, described according to described phase deviation sequence,Determine the measuring accuracy of current system, for:
Adopt statistical method, utilize described phase deviation sequence to determine the frequency drift rate of described local clock;
Utilize described phase deviation sequence and described frequency drift rate, determine described satellite time transfer signal and standardThe peak value of the poor and error peak of mean square of error between time.
9. method according to claim 8, is characterized in that, described method also comprises:
Preserve described frequency drift rate.
10. method according to claim 7, is characterized in that, described method also comprises:
Export definite measuring accuracy.
11. 1 kinds of time synchronized testing arrangements, is characterized in that, described device comprises: selected cell and surveyExamination unit; Wherein,
Described selected cell, before local clock non-locking satellite time transfer module, by satellite time transfer signalAs reference signal;
Described test cell, for according to described satellite time transfer signal and measured signal, determines current described quiltSurvey the time precision of signal.
12. devices according to claim 11, is characterized in that, described device also comprises: more singleUnit and measuring accuracy determining unit; Wherein,
Described comparing unit, for carrying out phase place ratio by local clock signal and described satellite time transfer signal in real time, obtain phase deviation sequence;
Described measuring accuracy determining unit, for according to described phase deviation sequence, determines the survey of current systemExamination precision.
13. devices according to claim 12, is characterized in that, described measuring accuracy determining unit alsoComprise: the first determination module and the second determination module; Wherein,
Described the first determination module, for adopting statistical method, utilize described phase deviation sequence determine described inThe frequency drift rate of local clock;
Described the second determination module, for utilizing described phase deviation sequence and described frequency drift rate, determinesDescribed satellite time transfer signal and the peak value of the poor and error peak of mean square of error between the standard time.
14. devices according to claim 13, is characterized in that, described device also comprises: storage is singleUnit, for storing described frequency drift rate.
15. devices according to claim 12, is characterized in that, described device also comprises: output is singleUnit, for determining after the measuring accuracy of current system, exports definite measuring accuracy.
16. devices according to claim 11, is characterized in that,
Described selected cell, also locks after described satellite time transfer module, by described for described local clockSignal after ground clock lock and optimization process is as reference signal;
Correspondingly, described test cell, also for according to the signal of the described local clock locking after optimizing andDescribed measured signal, determines the time precision of current described measured signal.
17. 1 kinds of time synchronized measuring accuracy determining devices, is characterized in that, described device comprises: relativelyUnit and measuring accuracy determining unit; Wherein,
Described comparing unit, for carrying out phase place ratio by local clock signal and described satellite time transfer signal in real time, obtain phase deviation sequence;
Described measuring accuracy determining unit, for according to described phase deviation sequence, determines the survey of current systemExamination precision.
18. devices according to claim 17, is characterized in that, described measuring accuracy determining unit alsoComprise: the first determination module and the second determination module; Wherein,
Described the first determination module, for adopting statistical method, utilize described phase deviation sequence determine described inThe frequency drift rate of local clock;
Described the second determination module, for utilizing described phase deviation sequence and described frequency drift rate, determinesDescribed satellite time transfer signal and the peak value of the poor and error peak of mean square of error between the standard time.
19. devices according to claim 18, is characterized in that, described device also comprises: storage is singleUnit, for storing described frequency drift rate.
20. devices according to claim 17, is characterized in that, described device also comprises: output is singleUnit, for determining after the measuring accuracy of current system, exports definite measuring accuracy.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114114892A (en) * | 2021-11-29 | 2022-03-01 | 成都天奥电子股份有限公司 | Method for generating credible time |
| CN116184802A (en) * | 2023-04-26 | 2023-05-30 | 成都量子时频科技有限公司 | Automatic debugging and testing device and method for atomic clock electrical parameters based on FPGA |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1112247A (en) * | 1993-12-27 | 1995-11-22 | 现代电子产业株式会社 | A time synchronization apparatus and a method thereof using a global positioning system of a sateillte |
| US20080025156A1 (en) * | 2006-07-31 | 2008-01-31 | Seiko Epson Corporation | Time Correction Device, Timepiece Having a Time Correction Device, and Time Correction Method |
| CN101692163A (en) * | 2009-09-24 | 2010-04-07 | 中国计量科学研究院 | Method and system for remotely calibrating frequency standards |
| WO2010098460A1 (en) * | 2009-02-27 | 2010-09-02 | 古野電気株式会社 | Phase determining device and frequency determining device |
| CN101834599A (en) * | 2009-03-13 | 2010-09-15 | 华东电网有限公司 | Synchronizing unit and method for synchronizing distributed wave recording devices |
| CN201654495U (en) * | 2010-04-19 | 2010-11-24 | 普天信息技术研究院有限公司 | Satellite time transfer integrative machine |
| CN202533743U (en) * | 2012-02-16 | 2012-11-14 | 深圳市夏光通信测量技术有限公司 | Measuring basis system for time analyzer |
-
2014
- 2014-10-22 CN CN201410569576.XA patent/CN105589328B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1112247A (en) * | 1993-12-27 | 1995-11-22 | 现代电子产业株式会社 | A time synchronization apparatus and a method thereof using a global positioning system of a sateillte |
| US5757786A (en) * | 1993-12-27 | 1998-05-26 | Hyundai Electronics Industries Co., Ltd. | Time synchronization apparatus and a method thereof using a global positioning system of a satellite |
| US20080025156A1 (en) * | 2006-07-31 | 2008-01-31 | Seiko Epson Corporation | Time Correction Device, Timepiece Having a Time Correction Device, and Time Correction Method |
| CN100570515C (en) * | 2006-07-31 | 2009-12-16 | 精工爱普生株式会社 | The time set and the time bearing calibration of time correction device, band time correction device |
| WO2010098460A1 (en) * | 2009-02-27 | 2010-09-02 | 古野電気株式会社 | Phase determining device and frequency determining device |
| CN101834599A (en) * | 2009-03-13 | 2010-09-15 | 华东电网有限公司 | Synchronizing unit and method for synchronizing distributed wave recording devices |
| CN101692163A (en) * | 2009-09-24 | 2010-04-07 | 中国计量科学研究院 | Method and system for remotely calibrating frequency standards |
| CN201654495U (en) * | 2010-04-19 | 2010-11-24 | 普天信息技术研究院有限公司 | Satellite time transfer integrative machine |
| CN202533743U (en) * | 2012-02-16 | 2012-11-14 | 深圳市夏光通信测量技术有限公司 | Measuring basis system for time analyzer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114114892A (en) * | 2021-11-29 | 2022-03-01 | 成都天奥电子股份有限公司 | Method for generating credible time |
| CN114114892B (en) * | 2021-11-29 | 2023-07-25 | 成都天奥电子股份有限公司 | Method for generating trusted time |
| CN116184802A (en) * | 2023-04-26 | 2023-05-30 | 成都量子时频科技有限公司 | Automatic debugging and testing device and method for atomic clock electrical parameters based on FPGA |
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