CN103346852A - Apparatus capable of providing reference clock signal - Google Patents
Apparatus capable of providing reference clock signal Download PDFInfo
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- CN103346852A CN103346852A CN2013102074607A CN201310207460A CN103346852A CN 103346852 A CN103346852 A CN 103346852A CN 2013102074607 A CN2013102074607 A CN 2013102074607A CN 201310207460 A CN201310207460 A CN 201310207460A CN 103346852 A CN103346852 A CN 103346852A
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- 238000005259 measurement Methods 0.000 claims description 28
- 230000000052 comparative effect Effects 0.000 claims description 6
- 229910052701 rubidium Inorganic materials 0.000 claims description 3
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical group [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 claims description 3
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- 230000009286 beneficial effect Effects 0.000 description 4
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Abstract
The invention, which belongs to the digital clock field, discloses an apparatus capable of providing a reference clock signal. The apparatus comprises an atomic clock output module for providing a reference clock signal of an atomic clock, a local clock output module for providing a local reference clock signal, and a reference clock output module for selecting a signal provided by one clock output module between at least two clock output modules as a reference clock signal and outputting the reference clock signal, wherein the at least two clock output modules include an atomic clock output module and the local clock output module. The atomic clock reference clock signal and the local reference clock signal have set frequencies; and the reference clock output module is respectively connected with the atomic clock output module and the local clock output module. The provided apparatus enables reference clock signals to be outputted continuously.
Description
Technical field
The present invention relates to the digital dock field, particularly a kind of device that reference clock signal is provided.
Background technology
Along with SDH(Synchronous Digital Hierarchy, the digital synchronous system) propelling, time centre can be by time network with its reference clock signal that provides (for example the UTC(Coordinated Universal Time of national time service central service, universal time)) be published to each reference clock signal point of application (for example each point of application in temporal frequency laboratory and the time-frequency system).Each reference clock signal point of application adopts reference clock signal as reference fiducial time.In addition, except the reference clock signal that time network provides, each reference clock signal point of application can also adopt the local reference clock signal, and high frequency crystal oscillator signal for example is as reference clock signal.
Each reference clock signal point of application obtains the reference clock signal of needs by the deriving means of reference clock signal.The deriving means of existing reference clock signal comprises the deriving means of external timing signal, GPS(Global Positioning System for example, global positioning system) the satellite-signal deriving means: be used for obtaining gps satellite signal and providing it to the reference clock signal point of application.
In realizing process of the present invention, the inventor finds that there is following problem at least in prior art: the deriving means of existing reference clock signal can only provide single reference clock signal, for example the deriving means of gps satellite signal only provides gps satellite signal, if disturbance fluctuation appears in gps satellite signal, this deriving means can not provide lasting reference clock signal, may influence the running of reference clock signal point of application.And single reference clock signal can not satisfy the reference clock signal point of application adopts different reference clock signals at different application occasion needs demand.
Summary of the invention
For lasting reference clock signal is provided, and satisfies the reference clock signal point of application and adopt the demand of different reference clock signals in the different application occasion, the embodiment of the invention provides a kind of device that reference clock signal is provided.Described technical scheme is as follows:
A kind of device that reference clock signal is provided, described device comprises: be used for providing the atomic clock output module of atomic clock reference clock signal, described device also comprises:
Be used for providing the local clock output module of local reference clock signal; And
Be used for from least two clock output modules, select signal that a clock output module provides as reference clock signal, and export the reference clock output module of described reference clock signal, described at least two clock output modules comprise described atomic clock output module and described local clock output module;
Described atomic clock reference clock signal and described local reference clock signal are setpoint frequency; Described reference clock output module is connected with described local clock output module with described atomic clock output module respectively.
Alternatively, described device also comprises:
Be used for providing the external clock output module of external reference clock signal, described external reference clock signal is described setpoint frequency;
Described reference clock output module comprises:
Processor and being used under the control of described processor, the selector of output reference clock signal, described selector comprises control end, three inputs and an output that is used for the described reference clock signal of output, and described three inputs are connected with described atomic clock output module, described local clock output module and described external clock output module respectively;
Described reference clock signal is the signal of an input input in described three inputs.
Preferably, described atomic clock output module comprises:
Be used for providing the atomic clock of atomic clock signal;
For the atomic clock signal frequency division that described atomic clock is provided, obtain the first pulse per second (PPS) generation unit of atomic clock pps pulse per second signal;
Be used for receiving the GPS receiving element of GPS pps pulse per second signal;
The atomic clock pps pulse per second signal that is used for the described first pulse per second (PPS) generation unit is obtained carries out difference measurements mutually with the GPS pps pulse per second signal that described GPS receiving element receives, and obtains first of measurement result and compares facies unit; And
Be used for the measurement result that obtains than facies unit according to described first, the atomic clock signal that described atomic clock is provided carries out the phase place adjustment, and first processing unit of the atomic clock signal of output after adjusting;
Atomic clock signal after the adjustment of described first processing unit output is described setpoint frequency, described atomic clock is connected with described first processing unit with the described first pulse per second (PPS) generation unit respectively, and described first is connected with the described first pulse per second (PPS) generation unit, described GPS receiving element and described first processing unit respectively than facies unit.
Alternatively, described atomic clock output module also comprises:
The external reference clock signal that is used for described external clock output module is provided carries out frequency division, obtains the second pulse per second (PPS) generation unit of external clock pps pulse per second signal;
The atomic clock pps pulse per second signal that is used for the described first pulse per second (PPS) generation unit is obtained carries out difference measurements mutually with the external clock pps pulse per second signal that the described second pulse per second (PPS) generation unit obtains, and obtains second of measurement result and compares facies unit; And
Be used for the measurement result that obtains than facies unit according to described second, the atomic clock signal that described atomic clock is provided carries out the phase place adjustment, and second processing unit of the atomic clock signal of output after adjusting;
Atom signals after the adjustment of described second processing unit output is described setpoint frequency, the described second pulse per second (PPS) generation unit is connected with described external clock output module, described second is connected with described second processing unit with the described first pulse per second (PPS) generation unit, the described second pulse per second (PPS) generation unit respectively than facies unit, and described atomic clock is connected with described second processing unit.
Preferably, described local clock output module comprises:
Be used for providing the local clock generation unit of local clock signal;
For the local clock signal frequency split that described local clock generation unit is provided, obtain the 3rd pulse per second (PPS) generation unit of local pps pulse per second signal;
Be used for described the 3rd pulse per second (PPS) the generation unit described local pps pulse per second signal that obtains and the atomic clock pps pulse per second signal that the described first pulse per second (PPS) generation unit obtains are carried out the phase difference measurements, obtain the 3rd of measurement result and compare facies unit; And
Be used for the measurement result that obtains than facies unit according to the described the 3rd, the local clock signal that described local clock generation unit is provided carries out the phase place adjustment, and the 3rd processing unit of the local clock signal of output after adjusting;
Local clock signal after the adjustment of described the 3rd processing unit output is described setpoint frequency, described local clock generation unit is connected with described the 3rd processing unit with described the 3rd pulse per second (PPS) generation unit respectively, and the described the 3rd is connected with described the 3rd processing unit with the described first pulse per second (PPS) generation unit, described the 3rd pulse per second (PPS) generation unit respectively than facies unit.
Preferably, described external clock output module comprises:
Be used for to receive external timing signal, and the local clock signal that provides with described local clock generation unit is reference clock signal, measures the counter of the frequency of described external timing signal;
Be used for frequency and the described setpoint frequency of the described external timing signal of more described counter measures, obtain comparative result, and manage the unit everywhere according to the of described comparative result generation control signal; And
Be used for managing the described control signal that the unit produces everywhere according to described the, the frequency of described external timing signal is adjusted into described setpoint frequency, and output be adjusted into the signal generating unit of the external timing signal of described setpoint frequency;
The described unit of managing everywhere is connected with described signal generating unit with described counter respectively.
Preferably, described atomic clock is rubidium atomic clock.
Preferably, described local clock generation unit is VCXO.
Preferably, described setpoint frequency is 10MHz.
The beneficial effect that the technical scheme that the embodiment of the invention provides is brought is: by the reference clock output module with the atomic clock reference clock signal of the local reference clock signal of the setpoint frequency of local clock output module output or the setpoint frequency that the atomic clock output module provides as reference clock signal, and the reference clock signal of output setpoint frequency, on the one hand, can select to export the local reference clock signal or the atomic clock reference clock signal is any, satisfy the different demands of reference clock signal point of application; On the other hand, can work as local reference clock signal or atomic clock reference clock signal both one of when going wrong, select another person of output, make reference clock signal continue output, thereby the reference clock signal point of application run well.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of structural representation that the device of reference clock signal is provided that the embodiment of the invention provides;
Fig. 2 be the embodiment of the invention provide another the structural representation of the device of reference clock signal is provided;
Fig. 3 be the embodiment of the invention provide another the structural representation of the device of reference clock signal is provided;
Fig. 4 is the structural representation that another kind that the embodiment of the invention provides provides the device of reference clock signal.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
In embodiments of the present invention, local clock provides the local clock signal, and local clock includes but not limited to atomic clock and crystal oscillator.External clock provides external timing signal, and external clock includes but not limited to the local clock that backs up be commonly referred to local reference source.
Embodiment one
The embodiment of the invention provides a kind of device that reference clock signal is provided, and referring to Fig. 1 and Fig. 2, this device comprises: the atomic clock output module 101 that is used for providing the atomic clock reference clock signal.This device also comprises:
Be used for providing the local clock output module 102 of local reference clock signal; And, be used for from least two clock output modules, select signal that a clock output module provides as reference clock signal, and export the reference clock output module 103 of this reference clock signal.Aforementioned at least two clock output modules comprise atomic clock output module 101 and local clock output module 102.
Wherein, atomic clock reference clock signal and local reference clock signal are setpoint frequency.Reference clock output module 103 is connected with local clock output module 102 with atomic clock output module 101 respectively.
Referring to Fig. 2, atomic clock output module 101 comprises:
Be used for providing the atomic clock 1011 of atomic clock signal; Be used for atomic clock signal frequency division that atomic clock 1011 is provided, obtain atomic clock 1pps(1pulse-per-second, pulse per second (PPS)) the first pulse per second (PPS) generation unit 1012 of signal; Be used for receiving the GPS receiving element 1013 of GPS1pps signal; Be used for the GPS1pps signal that atomic clock 1pps signal that the first pulse per second (PPS) generation unit 1012 is obtained and GPS receiving element 1013 receive and carry out difference measurements mutually, obtain measurement result first than facies unit 1014; And, being used for the measurement result that obtains than facies unit 1014 according to first, the atomic clock signal that atomic clock 1011 is provided carries out the phase place adjustment, and first processing unit 1015 of the atomic clock signal of output after adjusting.
Wherein, the atomic clock signal after the adjustment of first processing unit, 1015 outputs is setpoint frequency.Atomic clock 1011 is connected with first processing unit 1015 with the first pulse per second (PPS) generation unit 1012 respectively, and first is connected with the first pulse per second (PPS) generation unit 1012, GPS receiving element 1013 and first processing unit 1015 respectively than facies unit 1014.
Preferably, atomic clock 1012 can be rubidium atomic clock.
Particularly, the reception GPS1pps signal that the atomic clock reference clock signal that atomic clock output module 101 provides and GPS receiving element 1013 receive is synchronous, can improve the accuracy of atomic clock reference clock signal.
Refer again to Fig. 2, local clock output module 102 comprises:
Be used for providing the local clock generation unit 1021 of local clock signal; For the local clock signal frequency split that local clock generation unit 1021 is provided, obtain the 3rd pulse per second (PPS) generation unit 1022 of local 1pps signal; Be used for the 3rd pulse per second (PPS) the generation unit 1022 local 1pps signal that obtains and the atomic clock 1pps signal that the first pulse per second (PPS) generation unit 1012 obtains are carried out the phase difference measurements, obtain measurement result the 3rd than facies unit 1023; And, being used for the measurement result that obtains than facies unit 1023 according to the 3rd, the local clock signal that local clock generation unit 1021 is provided carries out the phase place adjustment, and the 3rd processing unit 1024 of the local clock signal of output after adjusting.
Wherein, the local clock signal after the adjustment of the 3rd processing unit 1024 outputs is setpoint frequency.Local clock generation unit 1021 is connected with the 3rd processing unit 1024 with the 3rd pulse per second (PPS) generation unit 1022 respectively, and the 3rd is connected with the first pulse per second (PPS) generation unit 1012, the 3rd pulse per second (PPS) generation unit 1022 and the 3rd processing unit 1024 respectively than facies unit 1023.
Preferably, local clock generation unit 1021 can be VCXO, and for example model is the thermostatic control formula crystal oscillator of OSA8607.
Particularly, the local reference clock signal of the first local clock output module, 102 outputs is synchronized with the atomic clock signal that atomic clock 1011 produces, and can improve accuracy.
Preferably, first processing unit 1015 and the 3rd processing unit 1024 can be microprocessor or microcontroller.Particularly, first processing unit 1015 and the 3rd processing unit 1024 can be same microprocessor or microcontroller.
Preferably, setpoint frequency can be 10MHz.
The beneficial effect that the said apparatus that the embodiment of the invention provides brings is: by the reference clock output module with the atomic clock reference clock signal of the local reference clock signal of the setpoint frequency of local clock output module output or the setpoint frequency that the atomic clock output module provides as reference clock signal, and the reference clock signal of output setpoint frequency, on the one hand, can select to export the local reference clock signal or the atomic clock reference clock signal is any, satisfy the different demands of reference clock signal point of application; On the other hand, can work as local reference clock signal or atomic clock reference clock signal both one of when going wrong, select another person of output, make reference clock signal continue output, thereby the reference clock signal point of application run well.
Further, the atomic clock reference clock signal of atomic clock output module output is and the clock signal of GPS1pps signal after synchronously to have improved the accuracy of atomic clock reference clock signal; Local clock output module output local reference clock signal is and the clock signal of atomic clock signal after synchronously that the accuracy of local reference clock signal is provided.
Embodiment two
The embodiment of the invention provides a kind of device that reference clock signal is provided, and this device comprises atomic clock output module 201, local clock output module 202 and reference clock output module 203.Wherein, local clock output module 202 comprises that local clock generation unit 2021, the 3rd pulse per second (PPS) generation unit 2022, the 3rd are than facies unit 2023 and the 3rd processing unit 2024.The structure of the local clock output module 102 that (illustrated in figures 1 and 2) described among the structure of local clock output module 202 and the embodiment one is identical, omit description at this, difference is, (1) this device comprises that also external clock output module 204, (2) have described the structure of reference clock output module 203 and the structure difference of (3) atomic clock output module 201.
Referring to Fig. 3 and Fig. 4, this device also comprises: the external clock output module 204 that is used for providing the external reference clock signal.This external reference clock signal is setpoint frequency.
Refer again to Fig. 3 and Fig. 4, reference clock output module 203 comprises:
Preferably, referring to Fig. 3 and Fig. 4, external clock output module 204 comprises:
Be used for to receive external timing signal (shown in Fig. 3 and Fig. 4 arrow), and be reference clock signal with the local clock signal that local clock generation unit 2021 provides, measure the counter 2041 of the frequency of external timing signal; Be used for frequency and the setpoint frequency of the external timing signal that counter 2041 relatively measures, obtain comparative result, and produce the of control signal according to this comparative result and manage unit 2042 everywhere; And, be used for managing the control signal that unit 2042 produces everywhere according to the, the frequency of external timing signal is adjusted into setpoint frequency, and output is adjusted into the signal generating unit 2043 of the external timing signal of setpoint frequency.Wherein, manage unit 2042 everywhere and be connected with signal generating unit 2043 with counter 2041 respectively.
Particularly, the external timing signal of enter counter 2042 includes but not limited to local reference source.
Preferably, signal generating unit 2043 can be DDS(Direct Digital Synthesizer, Direct Digital Synthesizer).
What deserves to be explained is, the external reference clock signal that the external clock output module provides has following beneficial effect: when (1) waits abnormality when GPS1pps signal appearance fluctuation, the atomic clock reference clock signal of atomic clock output module output can also carry out with the external timing signal that the external clock output module provides synchronously, has guaranteed the signal stabilization of atomic clock output module output; (2) in some special application scenarios, for example need two units (for example A and the B) time synchronized of reference clock signal point of application in the inner short time, the external signal (being equivalent to the external timing signal that the external clock output module provides) at A unit place must be introduced the time system (being equivalent to the local clock signal that the local clock output module provides) at B unit place so; (3) need carry out accuracy detection to the local measurement instrument, so the input that will make measuring instrument with external signal with reference to carrying out the homology self check.
Referring to Fig. 4, atomic clock output module 201 comprises that atomic clock 2011, the first pulse per second (PPS) generation unit 2012, GPS receiving element 2013, first are than facies unit 2014 and first processing unit 2015.The atomic clock 1011 that atomic clock 2011, the first pulse per second (PPS) generation unit 2012, GPS receiving element 2013, first are described than (illustrated in figures 1 and 2) among the structure of facies unit 2014 and first processing unit 2015 and the embodiment one, the first pulse per second (PPS) generation unit 1012, GPS receiving element 1013, first more identical than the structure of facies unit 1014 and first processing unit 1015 omit at this and to describe.This atomic clock output module 201 also comprises:
The external reference clock signal that is used for external clock output module 204 is provided carries out frequency division, obtains the second pulse per second (PPS) generation unit 2016 of external clock 1pps signal; The atomic clock 1pps signal that is used for the first pulse per second (PPS) generation unit 2012 is obtained carries out difference measurements mutually with the external clock 1pps signal that the second pulse per second (PPS) generation unit 2016 obtains, obtain measurement result second than facies unit 2017; And, being used for the measurement result that obtains than facies unit 2017 according to second, the atomic clock signal that atomic clock 2011 is provided carries out the phase place adjustment, and second processing unit 2018 of the atomic clock signal of output after adjusting.
Wherein, the atom signals after the adjustment of second processing unit, 2018 outputs is setpoint frequency.The second pulse per second (PPS) generation unit 2016 is connected with external clock output module 204, second is connected with the first pulse per second (PPS) generation unit 2012, the second pulse per second (PPS) generation unit 2016 and second processing unit 2018 respectively than facies unit 2017, and atomic clock 2011 is connected with second processing unit 2018.
Preferably, first processing unit 2015, second processing unit 2018, the 3rd processing unit 2024 or are managed unit 2042 everywhere and can be microprocessor or microcontroller.Particularly, first processing unit 2015, second processing unit 2018, the 3rd processing unit 2024 and the are managed unit 2042 everywhere and can be same processor with processor 2031.
Preferably, setpoint frequency can be 10MHz.
The beneficial effect that the said apparatus that the embodiment of the invention provides brings is: by the reference clock output module with the atomic clock reference clock signal of the local reference clock signal of the setpoint frequency of local clock output module output or the setpoint frequency that the atomic clock output module provides as reference clock signal, and the reference clock signal of output setpoint frequency, on the one hand, can select to export the local reference clock signal or the atomic clock reference clock signal is any, satisfy the different demands of reference clock signal point of application; On the other hand, can work as local reference clock signal or atomic clock reference clock signal both one of when going wrong, select another person of output, make reference clock signal continue output, thereby the reference clock signal point of application run well.
Further, the atomic clock reference clock signal of atomic clock output module output is and the clock signal of GPS1pps signal after synchronously to have improved the accuracy of atomic clock reference clock signal; Local clock output module output local reference clock signal is and the clock signal of atomic clock signal after synchronously that the accuracy of local reference clock signal is provided.
Further, the local reference clock signal of the setpoint frequency that the reference clock output module can also be exported the local clock output module, the atomic clock reference clock signal of the setpoint frequency that the atomic clock output module provides, or the external reference clock signal that the external clock output module provides is as reference clock signal, and the reference clock signal of output setpoint frequency, can select three kinds of any outputs of reference clock signal, make the scope of the reference clock signal that the reference clock signal point of application can select bigger, simultaneously, guarantee to continue the output reference clock signal to a greater extent.
The invention described above embodiment sequence number does not represent the quality of embodiment just to description.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the device that reference clock signal is provided comprises be used to the atomic clock output module that the atomic clock reference clock signal is provided, and it is characterized in that, described device also comprises:
Be used for providing the local clock output module of local reference clock signal; And
Be used for from least two clock output modules, select signal that a clock output module provides as reference clock signal, and export the reference clock output module of described reference clock signal, described at least two clock output modules comprise described atomic clock output module and described local clock output module;
Described atomic clock reference clock signal and described local reference clock signal are setpoint frequency; Described reference clock output module is connected with described local clock output module with described atomic clock output module respectively.
2. device according to claim 1 is characterized in that, described device also comprises:
Be used for providing the external clock output module of external reference clock signal, described external reference clock signal is described setpoint frequency;
Described reference clock output module comprises:
Processor and being used under the control of described processor, the selector of output reference clock signal, described selector comprises control end, three inputs and an output that is used for the described reference clock signal of output, and described three inputs are connected with described atomic clock output module, described local clock output module and described external clock output module respectively;
Described reference clock signal is the signal of an input input in described three inputs.
3. device according to claim 2 is characterized in that, described atomic clock output module comprises:
Be used for providing the atomic clock of atomic clock signal;
For the atomic clock signal frequency division that described atomic clock is provided, obtain the first pulse per second (PPS) generation unit of atomic clock pps pulse per second signal;
The global positioning system receiving element that is used for the receiving world locational system pps pulse per second signal;
The atomic clock pps pulse per second signal that is used for the described first pulse per second (PPS) generation unit is obtained carries out difference measurements mutually with the global positioning system pps pulse per second signal that described global positioning system receiving element receives, and obtains first of measurement result and compares facies unit; And
Be used for the measurement result that obtains than facies unit according to described first, the atomic clock signal that described atomic clock is provided carries out the phase place adjustment, and first processing unit of the atomic clock signal of output after adjusting;
Atomic clock signal after the adjustment of described first processing unit output is described setpoint frequency, described atomic clock is connected with described first processing unit with the described first pulse per second (PPS) generation unit respectively, and described first is connected with the described first pulse per second (PPS) generation unit, described global positioning system receiving element and described first processing unit respectively than facies unit.
4. device according to claim 3 is characterized in that, described atomic clock output module also comprises:
The external reference clock signal that is used for described external clock output module is provided carries out frequency division, obtains the second pulse per second (PPS) generation unit of external clock pps pulse per second signal;
The atomic clock pps pulse per second signal that is used for the described first pulse per second (PPS) generation unit is obtained carries out difference measurements mutually with the external clock pps pulse per second signal that the described second pulse per second (PPS) generation unit obtains, and obtains second of measurement result and compares facies unit; And
Be used for the measurement result that obtains than facies unit according to described second, the atomic clock signal that described atomic clock is provided carries out the phase place adjustment, and second processing unit of the atomic clock signal of output after adjusting;
Atom signals after the adjustment of described second processing unit output is described setpoint frequency, the described second pulse per second (PPS) generation unit is connected with described external clock output module, described second is connected with described second processing unit with the described first pulse per second (PPS) generation unit, the described second pulse per second (PPS) generation unit respectively than facies unit, and described atomic clock is connected with described second processing unit.
5. device according to claim 4 is characterized in that, described local clock output module comprises:
Be used for providing the local clock generation unit of local clock signal;
For the local clock signal frequency split that described local clock generation unit is provided, obtain the 3rd pulse per second (PPS) generation unit of local pps pulse per second signal;
Be used for described the 3rd pulse per second (PPS) the generation unit described local pps pulse per second signal that obtains and the atomic clock pps pulse per second signal that the described first pulse per second (PPS) generation unit obtains are carried out the phase difference measurements, obtain the 3rd of measurement result and compare facies unit; And
Be used for the measurement result that obtains than facies unit according to the described the 3rd, the local clock signal that described local clock generation unit is provided carries out the phase place adjustment, and the 3rd processing unit of the local clock signal of output after adjusting;
Local clock signal after the adjustment of described the 3rd processing unit output is described setpoint frequency, described local clock generation unit is connected with described the 3rd processing unit with described the 3rd pulse per second (PPS) generation unit respectively, and the described the 3rd is connected with described the 3rd processing unit with the described first pulse per second (PPS) generation unit, described the 3rd pulse per second (PPS) generation unit respectively than facies unit.
6. device according to claim 5 is characterized in that, described external clock output module comprises:
Be used for to receive external timing signal, and the local clock signal that provides with described local clock generation unit is reference clock signal, measures the counter of the frequency of described external timing signal;
Be used for frequency and the described setpoint frequency of the described external timing signal of more described counter measures, obtain comparative result, and manage the unit everywhere according to the of described comparative result generation control signal; And
Be used for managing the described control signal that the unit produces everywhere according to described the, the frequency of described external timing signal is adjusted into described setpoint frequency, and output be adjusted into the signal generating unit of the external timing signal of described setpoint frequency;
The described unit of managing everywhere is connected with described signal generating unit with described counter respectively.
7. according to each described device of claim 3-6, it is characterized in that described atomic clock is rubidium atomic clock.
8. according to claim 5 or 6 described devices, it is characterized in that described local clock generation unit is VCXO.
9. according to each described device of claim 1-6, it is characterized in that described setpoint frequency is 10MHz.
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| CN201118868Y (en) * | 2007-08-24 | 2008-09-17 | 深圳哈达讯通信技术有限公司 | Synchronization clock for digital cluster system |
| CN101145864A (en) * | 2007-10-11 | 2008-03-19 | 华为技术有限公司 | A method and system for improving base clock performance |
| CN101807965A (en) * | 2009-02-13 | 2010-08-18 | 大唐移动通信设备有限公司 | Device and method for synchronizing clock in communication system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104833999A (en) * | 2015-04-15 | 2015-08-12 | 北京空间机电研究所 | X-ray pulse detection system signal processing method |
| CN104833999B (en) * | 2015-04-15 | 2017-12-22 | 北京空间机电研究所 | A kind of X-ray pulse detection system signal processing method |
| CN105549375A (en) * | 2016-01-29 | 2016-05-04 | 中国科学院长春光学精密机械与物理研究所 | High-precision satellite-borne time transfer system |
| CN105549375B (en) * | 2016-01-29 | 2017-12-26 | 中国科学院长春光学精密机械与物理研究所 | The spaceborne Time Transmission system of high accuracy |
| CN106503592A (en) * | 2016-11-09 | 2017-03-15 | 深圳市德名利电子有限公司 | Encryption method and system based on PLD |
| CN106712888A (en) * | 2016-12-30 | 2017-05-24 | 江汉大学 | High-stability time base signal output system |
| CN108199799A (en) * | 2017-12-23 | 2018-06-22 | 航天恒星科技有限公司 | A kind of satellite communication terminal digital dock synchronous method and device |
| CN115561988A (en) * | 2022-12-06 | 2023-01-03 | 浙江赛思电子科技有限公司 | Time service terminal and time service system and method thereof |
| CN115561988B (en) * | 2022-12-06 | 2023-03-07 | 浙江赛思电子科技有限公司 | Time service terminal and time service system and method thereof |
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