CN110198211A - Frequency time signal integration unit based on the fusion of multi-source frequency time signal - Google Patents
Frequency time signal integration unit based on the fusion of multi-source frequency time signal Download PDFInfo
- Publication number
- CN110198211A CN110198211A CN201910318774.1A CN201910318774A CN110198211A CN 110198211 A CN110198211 A CN 110198211A CN 201910318774 A CN201910318774 A CN 201910318774A CN 110198211 A CN110198211 A CN 110198211A
- Authority
- CN
- China
- Prior art keywords
- signal
- frequency
- pulse
- source
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0075—Arrangements for synchronising receiver with transmitter with photonic or optical means
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Electric Clocks (AREA)
- Optical Communication System (AREA)
Abstract
The present invention provides a kind of frequency time signal integration unit based on the fusion of multi-source frequency time signal, integrated treatment is carried out to the signal in multiple sources, each source output frequency signal and second pulse signal, integration unit includes: multiple channels, portion of channel is used for while inputting multiple frequency signals, portion of channel is used for while inputting multiple second pulse signals, multiple frequency signals after channel transfer are weighted and averaged as standard-frequency signal, it is averaged to multiple second pulse signals, it obtains with the average immediate second pulse signal of pulse per second (PPS) as reference signal, using the zero crossing position of standard-frequency signal as the rising edge of second pulse signal, generate multiple second pulse signals, using the second pulse signal generated with the immediate standard-frequency signal of reference signal as the second pulse signal of output.Above-mentioned some source of integration unit upper level failure will not cause frequency signal directly to interrupt and influence the transmitting of next stage optical fiber time High-Accuracy Frequency.
Description
Technical field
The present invention relates to temporal frequency technical fields, more specifically, are related to one kind and are melted based on multi-source frequency time signal
The frequency time signal integration unit of conjunction.
Background technique
In current atom timing system, exported afterwards, Qi Tayuan using the micro- jump of the frequency signal from master clock (changing frequency)
Secondary clock signal only compares the micro- jump value use of control signal with for frequency, once master clock signal interruption, micro- jump output signal is also with regard in
Disconnected, system reliability is poor.
The frequency marking synthesizer of existing commodity at present, sine wave signal is only used as frequency signal to use, and when being integrated, only makes
Processing is weighted and averaged with signal frequency value.
On a plurality of optical fiber time Frequency Transfer link joint, how frequency time signal processing is reliably effectively carried out,
Effective technology and product are also lacked at present.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of failures of some source of upper level will not cause frequency signal
Directly interrupt and influence the time frequency based on the fusion of multi-source frequency time signal of next stage optical fiber time High-Accuracy Frequency transmitting
Rate signal synthesis device.
To achieve the goals above, the frequency time signal of the present invention based on the fusion of multi-source frequency time signal is comprehensive
Device carries out integrated treatment, each source output frequency signal and second pulse signal, the integration unit packet to the signal in multiple sources
Include: multiple channels, portion of channel are used for while inputting multiple frequency signals, and portion of channel is used for while inputting multiple seconds arteries and veins
Signal is rushed, multiple frequency signals after channel transfer are weighted and averaged as standard-frequency signal, to multiple seconds arteries and veins
It rushes signal to be averaged, obtains with the average immediate second pulse signal of pulse per second (PPS) as reference signal, believed with standard frequency
Number zero crossing position be second pulse signal rising edge, generate multiple second pulse signals, will be with the immediate mark of reference signal
Second pulse signal of the second pulse signal that quasi- frequency signal generates as output.
Preferably, the above-mentioned frequency time signal integration unit based on the fusion of multi-source frequency time signal further include:
Multiple down conversion modules, realize the output of multiple sources frequency signal and crystal oscillator module output crystal oscillator frequency signal into
Row down coversion is transferred to signal acquisition process control module；
Crystal oscillator module generates crystal oscillator frequency signal, is sent to down conversion module；Signal acquisition process control unit will be passed through
Standard-frequency signal of the crystal oscillator frequency signal of processing as output, and it is delivered to pulse per second (PPS) receiving processing module；
Signal acquisition process control module, A/D acquisition unit and D/A unit including multichannel, the acquisition of A/D acquisition unit
The frequency signal in multiple channels after down coversion obtains obtaining the relative phase between each channel frequency signal, using weighting
Standard-frequency signal is averagely obtained, with the crystal oscillator frequency signal of D/A unit control crystal oscillator module output, makes crystal oscillator frequency signal phase
Position is consistent with the phase of standard-frequency signal；
Pulse per second (PPS) processing module is averaging the second pulse signal for inputting each channel, filters out the second closest to average value
Pulse signal is as reference signal, using the zero crossing position of the standard-frequency signal of crystal oscillator module as the rising edge of pulse per second (PPS),
Multiple second pulse signals are generated, using the second pulse signal generated with the immediate standard-frequency signal of reference signal as output
Second pulse signal.
Further, it is preferable that the above-mentioned frequency time signal integration unit based on the fusion of multi-source frequency time signal also wraps
It includes:
Data receiver processing module receives the data-signal in each channel, so that the data-signal in each source merges, generates new
Data-signal, the data-signal include feature, frequency time signal transmission path and the important amendment for retaining source atomic clock
Value.
Moreover it is preferred that the relative phase that the multiple source inputs the frequency signal in each channel is kept within the scope of 200ps
Unanimously.
Further, it is preferable that further include alarm module, input the relative phase of the frequency signal in each channel not in 200ps
In range, alarm signal is issued.
Preferably, the frequency signal zero passage point of the second pulse signal leading edge position of every channel input and channel input
Set alignment.
It preferably, further include the channel for inputting digital state signal corresponding with each frequency signal, the number shape
The frequency signal that state signal is used to indicate each channel input is normal or abnormal.
Preferably, the frequency signal is sine wave signal.
Frequency time signal integration unit of the present invention based on the fusion of multi-source frequency time signal provides a kind of optical fiber
Temporal frequency high-precision transmits the connection means of inter-node times frequency signal reliable delivery.It is high for a plurality of optical fiber time frequency
The joint of precision relays link has the frequency time signal and data information of multiple upper level source outputs, as next stage source
Source use.It carries out consistency (being better than 200ps) to multiple second pulse signals of upper level source output to check, it is ensured that pulse per second (PPS)
Signal is errorless.Using double mixing time difference measurement technologies, multiple frequency signals (sine wave phase) of upper level source output are carried out
Accurate measurement；Using measurement result and the data information obtained from upper level source, frequency signal (phase) is weighted and averaged,
It controls crystal oscillator and exports accurate frequency and phase signal.Due to there is no direct frequency signal to join from upper level source to next stage source
Connect, only the connection of information flow, thus guarantee will not be caused some failure of apparatus of upper level source frequency signal it is direct in
Next stage source that is disconnected and influencing the transmitting of optical fiber time High-Accuracy Frequency.
Detailed description of the invention
Fig. 1 is that the frequency time signal integration unit of the present invention based on the fusion of multi-source frequency time signal constitutes block diagram
Schematic diagram.
Specific embodiment
In the following description, for purposes of illustration, it in order to provide the comprehensive understanding to one or more embodiments, explains
Many details are stated.It may be evident, however, that these embodiments can also be realized without these specific details.
Fig. 1 is that the frequency time signal integration unit of the present invention based on the fusion of multi-source frequency time signal constitutes block diagram
Schematic diagram, as shown in Figure 1, the integration unit carries out integrated treatment, each source output frequency signal to the signal in multiple sources
And second pulse signal, the integration unit include: multiple channels, portion of channel is used for while inputting multiple frequency signals (frequency
Rate signal 1,2 ..., n), portion of channel is used for while inputting multiple second pulse signals (second pulse signal 1,2 ..., n), to more
A frequency signal after channel transfer is weighted and averaged as standard-frequency signal, is carried out to multiple second pulse signals flat
, it obtains with the average immediate second pulse signal of pulse per second (PPS) as reference signal, with the zero passage point of standard-frequency signal
It is set to the rising edge of second pulse signal, generates multiple second pulse signals, it will be raw with the immediate standard-frequency signal of reference signal
At second pulse signal as output second pulse signal.
Preferably, as shown in Figure 1, it is above-mentioned based on multi-source frequency time signal fusion frequency time signal integration unit also
Include:
Multiple down conversion modules 10 realize the crystal oscillator frequency letter that the frequency signal of multiple source outputs and crystal oscillator module 20 export
Number carry out down coversion, be transferred to signal acquisition process control module 30；
Crystal oscillator module 20 generates crystal oscillator frequency signal, is sent to down conversion module 10；It will be controlled by signal acquisition process
Standard-frequency signal of the crystal oscillator frequency signal of cell processing as output, and it is delivered to pulse per second (PPS) receiving processing module 40；
Signal acquisition process control module 30, A/D acquisition unit and D/A unit including multichannel, A/D acquisition unit are adopted
The frequency signal for collecting multiple channels after down coversion, obtains obtaining the relative phase between each channel frequency signal, using adding
Weight average obtains standard-frequency signal, and the crystal oscillator frequency signal exported with D/A unit control crystal oscillator module 20 believes crystal oscillator frequency
Number phase is consistent with the phase of standard-frequency signal；
Pulse per second (PPS) processing module 40 is averaging the second pulse signal for inputting each channel, filters out closest to average value
Second pulse signal is as reference signal, using the zero crossing position of the standard-frequency signal of crystal oscillator module 20 as the rising of pulse per second (PPS)
Edge generates multiple second pulse signals, using the second pulse signal generated with the immediate standard-frequency signal of reference signal as defeated
Second pulse signal out.
Further, it is preferable that the above-mentioned frequency time signal integration unit based on the fusion of multi-source frequency time signal also wraps
It includes:
Data receiver processing module 50 receives the data-signal (data-signal 1,2 ..., n) in each channel, so that each source
Data-signal fusion, generates new data-signal, and the data-signal includes the feature for retaining source atomic clock, temporal frequency letter
Number transmission path and important correction value.
Moreover it is preferred that signal acquisition process control module 30 also calculates the frequency stability of each channel frequency signal, it will
The multiple frequency signals for meeting frequency stability requirement obtain standard-frequency signal using weighted average, for example, by international
Allan variance calculate the frequency stability of each channel frequency signal.
In the above-mentioned frequency time signal integration unit based on the fusion of multi-source frequency time signal, each input channel and crystalline substance
The frequency signal (sine wave) of vibration module output is down-converted to the signal of low-frequency sine；Signal acquisition process control module is to low
Frequency sine-wave signal is acquired, and obtains the relative phase between each channel sine wave signal and its variation, and weighted average obtains crystalline substance
Vibration control frequency plot value makes crystal oscillator module output frequency with the frequency signal of the D/A unit control crystal oscillator module output of low noise
The frequency and phase of rate signal and the average result of the frequency and phase weighting of input frequency signal are consistent.
Moreover it is preferred that the multiple source inputs the relative phase of the frequency signal in each channel in a certain range
(within the scope of 200ps) is consistent, and cannot be arbitrary, if be arbitrary, will be produced at the time of sine wave zero crossing represents
It is raw chaotic.The phase of the standard-frequency signal of output also requires to be consistent with the phase of input frequency signal.For opposite phase
Position awards failure alarms processing beyond the input frequency signal of a certain range (within the scope of 200ps), that is to say, that further, excellent
Selection of land further includes alarm module, inputs the relative phase of the frequency signal in each channel not within the scope of 200ps, issues alarm signal
Number.
Preferably, the frequency signal zero passage point of the second pulse signal leading edge position of every channel input and channel input
Set alignment.
It preferably, further include input digital state signal (digital state signal 1-n) corresponding with each frequency signal
Channel, the frequency signal that the digital state signal is used to indicate the input of each channel is normal or abnormal.
Preferably, the frequency signal is sine wave signal.
Frequency time signal integration unit of the present invention based on the fusion of multi-source frequency time signal, is mainly used for a plurality of
The integrated treatment of frequency time signal on the joint in optical fiber time Frequency Transfer path is building optical fiber time Frequency Transfer net
One of key device.Integration unit should carry out integrated treatment to multiple second pulse signals, produce new second pulse signal,
Also integrated treatment is carried out to multiple sine wave signals, generates new sine wave signal, also multiple data informations is integrated
Processing, generates comprehensive data information, currently without Integrated Processing Unit similar in this way.
The above-mentioned integration unit of the present invention uses thick label of the second pulse signal rising edge as the moment, sine wave phase conduct
The fine label at moment technically has greatly advanced.Device carries out integrated treatment to the sine wave signal of multiple inputs
When, registration process mainly is carried out to the sine wave phase at characterization moment, making the sine wave phase of final output is multiple input just
String wave signal phase result of weighted average.
Couple without direct signal between the above-mentioned integration unit input signal of the present invention and output signal, only information
Connection, any single input signal interruption can't be such that output signal interrupts, sufficiently ensure the reliability of device.
Although content disclosed above shows exemplary embodiment of the present invention, it should be noted that without departing substantially from power
Under the premise of benefit requires the scope of the present invention limited, it may be many modifications and modify.In addition, although element of the invention
It can describe or require in the form of individual, it is also contemplated that it is multiple, it is unless explicitly limited odd number.
Claims (8)
1. a kind of frequency time signal integration unit based on the fusion of multi-source frequency time signal, which is characterized in that multiple sources
Signal carry out integrated treatment, each source output frequency signal and second pulse signal, the integration unit include: multiple channels,
Portion of channel is used for while inputting multiple frequency signals, and portion of channel is used for while inputting multiple second pulse signals, to more
A frequency signal after channel transfer is weighted and averaged as standard-frequency signal, is carried out to multiple second pulse signals flat
, it obtains with the average immediate second pulse signal of pulse per second (PPS) as reference signal, with the zero passage point of standard-frequency signal
It is set to the rising edge of second pulse signal, generates multiple second pulse signals, it will be raw with the immediate standard-frequency signal of reference signal
At second pulse signal as output second pulse signal.
2. the frequency time signal integration unit according to claim 1 based on the fusion of multi-source frequency time signal, special
Sign is, further includes:
The crystal oscillator frequency signal of multiple down conversion modules, the frequency signal and crystal oscillator module output of realizing multiple source outputs carries out down
Frequency conversion is transferred to signal acquisition process control module；
Crystal oscillator module generates crystal oscillator frequency signal, is sent to down conversion module；It will be handled by signal acquisition process control unit
Standard-frequency signal of the crystal oscillator frequency signal as output, and be delivered to pulse per second (PPS) receiving processing module；
Signal acquisition process control module, A/D acquisition unit and D/A unit including multichannel, the acquisition of A/D acquisition unit are passed through
The frequency signal in multiple channels after down coversion obtains obtaining the relative phase between each channel frequency signal, using weighted average
Obtain standard-frequency signal, with D/A unit control crystal oscillator module output crystal oscillator frequency signal, make crystal oscillator frequency signal phase with
The phase of standard-frequency signal is consistent；
Pulse per second (PPS) processing module is averaging the second pulse signal for inputting each channel, filters out the pulse per second (PPS) closest to average value
Signal is generated as reference signal using the zero crossing position of the standard-frequency signal of crystal oscillator module as the rising edge of pulse per second (PPS)
Multiple second pulse signals, using the second pulse signal generated with the immediate standard-frequency signal of reference signal as the second arteries and veins of output
Rush signal.
3. the frequency time signal integration unit according to claim 2 based on the fusion of multi-source frequency time signal, special
Sign is, further includes:
Data receiver processing module receives the data-signal in each channel, so that the data-signal in each source merges, generates new data
Signal, the data-signal include feature, frequency time signal transmission path and the important correction value for retaining source atomic clock.
4. the frequency time signal integration unit according to claim 1 based on the fusion of multi-source frequency time signal, special
Sign is that the relative phase that the multiple source inputs the frequency signal in each channel is consistent within the scope of 200ps.
5. the frequency time signal integration unit according to claim 4 based on the fusion of multi-source frequency time signal, special
Sign is, further includes alarm module, inputs the relative phase of the frequency signal in each channel not within the scope of 200ps, issues alarm
Signal.
6. the frequency time signal integration unit according to claim 1 based on the fusion of multi-source frequency time signal, special
Sign is, the second pulse signal leading edge position of every channel input and the frequency signal zero crossing aligned in position of channel input.
7. the frequency time signal integration unit according to claim 1 based on the fusion of multi-source frequency time signal, special
Sign is, further includes the channel for inputting digital state signal corresponding with each frequency signal, and the digital state signal is used
In the frequency signal for indicating the input of each channel be normal or abnormal.
8. according to claim 1 in -7 described in any claim based on the temporal frequency letter of multi-source frequency time signal fusion
Number integration unit, which is characterized in that the frequency signal is sine wave signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910318774.1A CN110198211B (en) | 2019-04-19 | 2019-04-19 | Time frequency signal synthesis device based on multi-source time frequency signal fusion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910318774.1A CN110198211B (en) | 2019-04-19 | 2019-04-19 | Time frequency signal synthesis device based on multi-source time frequency signal fusion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110198211A true CN110198211A (en) | 2019-09-03 |
| CN110198211B CN110198211B (en) | 2021-12-03 |
Family
ID=67752134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910318774.1A Active CN110198211B (en) | 2019-04-19 | 2019-04-19 | Time frequency signal synthesis device based on multi-source time frequency signal fusion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110198211B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609462A (en) * | 2019-09-20 | 2019-12-24 | 西安空间无线电技术研究所 | High-stability clock synthesis device and method based on atomic clock group |
| CN110989326A (en) * | 2019-12-26 | 2020-04-10 | 中国计量科学研究院 | Local high-precision time frequency real-time comprehensive device |
| CN110989327A (en) * | 2019-12-26 | 2020-04-10 | 中国计量科学研究院 | Distributed high-precision time frequency real-time integrated system |
| CN111106870A (en) * | 2019-12-26 | 2020-05-05 | 中国计量科学研究院 | Super-long-distance dual-fiber interconnected multistage optical fiber time frequency transmission system |
| CN111447019A (en) * | 2020-03-05 | 2020-07-24 | 中国电子科技集团公司第二十九研究所 | Device for fusing pulse signals among multiple modules |
| CN112671464A (en) * | 2020-12-10 | 2021-04-16 | 中国计量科学研究院 | Double-channel time frequency high-precision transmission intermediate node device |
| CN112688753A (en) * | 2020-12-10 | 2021-04-20 | 中国计量科学研究院 | High-precision transmission device for looped network double-channel time frequency |
| CN112713981A (en) * | 2020-12-10 | 2021-04-27 | 中国计量科学研究院 | Double-channel time frequency high-precision transmission device and method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4768109A (en) * | 1983-12-24 | 1988-08-30 | Victor Company Of Japan, Ltd. | Video signal recording and/or reproducing apparatus |
| CN101217276A (en) * | 2007-01-03 | 2008-07-09 | 三星电子株式会社 | Method and apparatus for generating multi-phase signals |
| CN101231337A (en) * | 2008-02-15 | 2008-07-30 | 哈尔滨工程大学 | High-precision time synchronizing apparatus |
| CN201266923Y (en) * | 2008-09-09 | 2009-07-01 | 北京七维航测科技发展有限公司 | GPS combined time frequency instrument |
| CN102611516A (en) * | 2012-01-17 | 2012-07-25 | 成都府河电力自动化成套设备有限责任公司 | Method and device for generating high-precision synchronous clock |
| CN203261316U (en) * | 2013-05-28 | 2013-10-30 | 中国人民解放军63921部队 | Clock source |
| CN103457716A (en) * | 2013-09-13 | 2013-12-18 | 烟台东方英达康自动化技术有限公司 | Optimizing time synchronizing device for multi-channel clock sources |
| CN104330966A (en) * | 2014-10-22 | 2015-02-04 | 中国人民解放军信息工程大学 | Multi-mode high-precision time and frequency standard equipment |
| US20170168212A1 (en) * | 2015-06-11 | 2017-06-15 | Boe Technology Group Co., Ltd. | LED Lamp Strip Structure and Control Method Thereof, Backlight Module, Liquid Crystal Display Device |
| CN108112069A (en) * | 2017-12-19 | 2018-06-01 | 福建三元达网络技术有限公司 | A kind of synchronization keeping method and system of TDD-LTE equipment |
-
2019
- 2019-04-19 CN CN201910318774.1A patent/CN110198211B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4768109A (en) * | 1983-12-24 | 1988-08-30 | Victor Company Of Japan, Ltd. | Video signal recording and/or reproducing apparatus |
| CN101217276A (en) * | 2007-01-03 | 2008-07-09 | 三星电子株式会社 | Method and apparatus for generating multi-phase signals |
| CN101231337A (en) * | 2008-02-15 | 2008-07-30 | 哈尔滨工程大学 | High-precision time synchronizing apparatus |
| CN201266923Y (en) * | 2008-09-09 | 2009-07-01 | 北京七维航测科技发展有限公司 | GPS combined time frequency instrument |
| CN102611516A (en) * | 2012-01-17 | 2012-07-25 | 成都府河电力自动化成套设备有限责任公司 | Method and device for generating high-precision synchronous clock |
| CN203261316U (en) * | 2013-05-28 | 2013-10-30 | 中国人民解放军63921部队 | Clock source |
| CN103457716A (en) * | 2013-09-13 | 2013-12-18 | 烟台东方英达康自动化技术有限公司 | Optimizing time synchronizing device for multi-channel clock sources |
| CN104330966A (en) * | 2014-10-22 | 2015-02-04 | 中国人民解放军信息工程大学 | Multi-mode high-precision time and frequency standard equipment |
| US20170168212A1 (en) * | 2015-06-11 | 2017-06-15 | Boe Technology Group Co., Ltd. | LED Lamp Strip Structure and Control Method Thereof, Backlight Module, Liquid Crystal Display Device |
| CN108112069A (en) * | 2017-12-19 | 2018-06-01 | 福建三元达网络技术有限公司 | A kind of synchronization keeping method and system of TDD-LTE equipment |
Non-Patent Citations (1)
| Title |
|---|
| 梁双有: ""国家授时中心的卫星电视时间信号测量系统"", 《2005年全国时间频率学术交流会》 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609462A (en) * | 2019-09-20 | 2019-12-24 | 西安空间无线电技术研究所 | High-stability clock synthesis device and method based on atomic clock group |
| CN110989326B (en) * | 2019-12-26 | 2021-03-30 | 中国计量科学研究院 | Local high-precision time frequency real-time comprehensive device |
| CN110989327A (en) * | 2019-12-26 | 2020-04-10 | 中国计量科学研究院 | Distributed high-precision time frequency real-time integrated system |
| CN111106870A (en) * | 2019-12-26 | 2020-05-05 | 中国计量科学研究院 | Super-long-distance dual-fiber interconnected multistage optical fiber time frequency transmission system |
| CN110989327B (en) * | 2019-12-26 | 2021-03-30 | 中国计量科学研究院 | Distributed high-precision time frequency real-time integrated system |
| CN110989326A (en) * | 2019-12-26 | 2020-04-10 | 中国计量科学研究院 | Local high-precision time frequency real-time comprehensive device |
| CN111106870B (en) * | 2019-12-26 | 2021-08-17 | 中国计量科学研究院 | Super-long-distance dual-fiber interconnected multistage optical fiber time frequency transmission system |
| CN111447019A (en) * | 2020-03-05 | 2020-07-24 | 中国电子科技集团公司第二十九研究所 | Device for fusing pulse signals among multiple modules |
| CN111447019B (en) * | 2020-03-05 | 2021-12-31 | 中国电子科技集团公司第二十九研究所 | Device for fusing pulse signals among multiple modules |
| CN112671464A (en) * | 2020-12-10 | 2021-04-16 | 中国计量科学研究院 | Double-channel time frequency high-precision transmission intermediate node device |
| CN112688753A (en) * | 2020-12-10 | 2021-04-20 | 中国计量科学研究院 | High-precision transmission device for looped network double-channel time frequency |
| CN112713981A (en) * | 2020-12-10 | 2021-04-27 | 中国计量科学研究院 | Double-channel time frequency high-precision transmission device and method |
| CN112688753B (en) * | 2020-12-10 | 2023-02-24 | 中国计量科学研究院 | High-precision transmission device for looped network double-channel time frequency |
| CN112713981B (en) * | 2020-12-10 | 2023-03-14 | 中国计量科学研究院 | Double-channel time frequency high-precision transmission device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110198211B (en) | 2021-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110198211A (en) | Frequency time signal integration unit based on the fusion of multi-source frequency time signal | |
| CN107765546A (en) | A kind of precise synchronization system and method based on GPS, BD and rubidium atomic clock | |
| KR20010082067A (en) | Time synchronous system | |
| KR101175882B1 (en) | A method for distributing a common time reference within a distributed architecture | |
| CN102916743B (en) | The method of the asymmetric difference accurate measurement of a kind of time delay | |
| CN104518839B (en) | frequency deviation detection method and device | |
| CN201127028Y (en) | Time synchronization system transferring time through synchronous digital hierarchy optical communications network | |
| CN101330374A (en) | Method and system for synchronizing clock of transmission network as well as subordinate clock side entity | |
| CN113014350B (en) | PMC interface-based time synchronization method between simulation devices | |
| CN104333426A (en) | Pulse per second synchronization method based on merging unit SV message sampling sequence number learning | |
| CN106961312B (en) | A kind of structure of network instrument clock synchronization system and method | |
| CN101425865A (en) | Method and system for synchronizing clock of transmission network as well as subordinate clock side entity | |
| CN109818701A (en) | The high-accuracy clock synchronization method and system of communication equipment | |
| CN204631463U (en) | A kind of gps clock synchro system of radiation source Monitoring and Positioning | |
| CN104049525B (en) | A kind of method eliminating phase differential between multiple time input source in clock | |
| CN102404105A (en) | Device and method for realizing time synchronization on Ethernet switch | |
| CN108768577A (en) | A kind of communication network time service method and system based on PTP time synchronizing signals | |
| CN105338613A (en) | System and method for time setting synchronization of scattered nodes by use of wireless communication | |
| CN104506297A (en) | Frequency transmission system based on digital compensation systems, and transmission method of frequency transmission system | |
| CN110176982A (en) | Single channel temporal frequency high-precision transfer device | |
| CN103346852A (en) | Apparatus capable of providing reference clock signal | |
| CN108872910A (en) | Timing system and method for online verification of power quality monitoring device | |
| CN111106870B (en) | Super-long-distance dual-fiber interconnected multistage optical fiber time frequency transmission system | |
| CN101770208A (en) | Realization method of time service clock of electrical power system | |
| CN103546225A (en) | Phototiming network timing system and timing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |