CN108183709A - A kind of CPT atomic frequencies tame control method and equipment - Google Patents
A kind of CPT atomic frequencies tame control method and equipment Download PDFInfo
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- CN108183709A CN108183709A CN201711247133.9A CN201711247133A CN108183709A CN 108183709 A CN108183709 A CN 108183709A CN 201711247133 A CN201711247133 A CN 201711247133A CN 108183709 A CN108183709 A CN 108183709A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/26—Automatic control of frequency or phase; Synchronisation using energy levels of molecules, atoms, or subatomic particles as a frequency reference
Abstract
This application discloses a kind of CPT atomic frequencies to tame control method and equipment, including：Comprising controller is tamed in CPT atomic clocks, this is tamed controller and determines the local frequency of the CPT atomic clocks, and divide to obtain the first pps pulse per second signal based on the local frequency；Receive the second pps pulse per second signal inputted by outside port；Based on first pps pulse per second signal and second pps pulse per second signal, the frequency offset of the local frequency of CPT atomic clocks in setting time interval is determined；According to the frequency offset, the local frequency of the CPT atomic clocks is carried out to tame adjustment, realize the frequency that CPT atomic clocks are tamed in the short time, to inhibit the frequency drift problem of CPT atomic clocks, and the taming controller built in by CPT atomic clocks is realized, it is simple in structure, be easy to debug, improve that CPT atomic frequencies tame automatically control and autonomous operation.
Description
Technical field
This application involves atomic clock technical field more particularly to a kind of CPT (Coherent Population
Trapping, Coherent Population Trapping imprison) atomic frequency tames control method and equipment.
Background technology
Atomic clock is current timing tool most accurate in the world.In communication, aerospace, satellite navigation and Scientific Measurement
Test etc. plays an important role.CPT atomic clocks are that one kind that the Coherent Population Trapping based on atom is imprisoned principle and designed is new
Type atomic clock is mainly acted on using double-colored coherent light and atom atom being prepared into coherent state and by the use of CPT signals as micro-
Wave frequency discrimination signal and the atomic frequency resource realized.
CPT atomic clocks are different from atomic clocks, the quantum parts such as traditional hydrogen, rubidium, caesium in operation principle and do not need to microwave
Resonator is the atomic clock that can realize minimum volume and lowest energy consumption in principle and technology at present.Since it is with volume
It is small, low in energy consumption, start it is fast the advantages that, be with a wide range of applications.
However, there is frequency drift in CPT atomic clocks as two level frequency marking.In order to which CPT atomic frequencies is inhibited to float
Move, propose a kind of scheme for inhibiting the drift of CPT atomic frequencies at present, i.e., using external equipment to the frequencies of CPT atomic clocks into
Row calibration effectively improves the physical property of CPT atomic clocks.But there are complicated, required resource ratios for this mode
It is more, be not easy to realize the problems such as.
Invention content
In view of this, the embodiment of the present application provides a kind of CPT atomic frequencies and tames control method and equipment, for solving
The problem of CPT atomic frequencies certainly how to be inhibited to drift about.
The embodiment of the present application provides a kind of CPT atomic frequencies and tames control method, includes and tames and dociles in the CPT atomic clocks
Controller is taken, wherein：
The taming controller determines the local frequency of the CPT atomic clocks, and divides to obtain based on the local frequency
First pps pulse per second signal；
The second pps pulse per second signal that the taming controller reception is inputted by outside port；
The taming controller is based on first pps pulse per second signal and second pps pulse per second signal, determines setting time
The frequency offset of the local frequency of the CPT atomic clocks in interval；
The taming controller carries out the local frequency of the CPT atomic clocks to tame tune according to the frequency offset
It is whole.
The embodiment of the present application provides a kind of CPT atomic frequencies and tames control device, and the taming control device includes
In the CPT atomic clocks, including：
Determination unit for determining the local frequency of the CPT atomic clocks, and divides based on the local frequency to obtain
One-second burst signal；
Receiving unit, for receiving the second pps pulse per second signal inputted by outside port；
Processing unit for being based on first pps pulse per second signal and second pps pulse per second signal, determines setting time
The frequency offset of the local frequency of the CPT atomic clocks in interval；
Adjustment unit, for according to the frequency offset, carrying out taming tune to the local frequency of the CPT atomic clocks
It is whole.
It is had the beneficial effect that caused by least one embodiment in the application：
Comprising controller is tamed in CPT atomic clocks in the embodiment of the present application, this, which tames controller, can be based on frequency frequency multiplication
With the short interval measurement method of quantization delay, the frequency shift (FS) of CPT atomic clocks is accurately measured, and big according to frequency shift (FS)
It is small, it proposes that different frequencies tames control method, the frequency that CPT atomic clocks are tamed in the short time is realized, to inhibit CPT atomic clocks
Frequency drift problem, and taming controller of the mode provided by the embodiments of the present application built in by CPT atomic clocks is realized, knot
Structure is simple, is easy to debug, improve that CPT atomic frequencies tame automatically control and autonomous operation so that CPT atomic frequencies
Taming becomes flexible and easy to operate.
Description of the drawings
In order to illustrate more clearly of the technical solution in the embodiment of the present application, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present application, for this
For the those of ordinary skill in field, without having to pay creative labor, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is the flow diagram that a kind of CPT atomic frequencies provided by the embodiments of the present application tame control method；
Fig. 2 is the flow diagram that a kind of CPT atomic frequencies provided by the embodiments of the present application tame control method；
Fig. 3 is the structure diagram that a kind of CPT atomic frequencies provided by the embodiments of the present application tame control device.
Specific embodiment
In order to realize the purpose of the application, the embodiment of the present application provides a kind of CPT atomic frequencies and tames control method
And equipment, comprising controller is tamed in CPT atomic clocks in scheme provided by the embodiments of the present application, this tames controller being capable of base
In frequency frequency multiplication and the short interval measurement method of quantization delay, the frequency shift (FS) of CPT atomic clocks is accurately measured, and according to
Frequency shift (FS) size proposes that different frequencies tames control method, the frequency that CPT atomic clocks are tamed in the short time is realized, with suppression
The frequency drift problem of CPT atomic clocks processed, and taming control of the mode provided by the embodiments of the present application built in by CPT atomic clocks
Device processed is realized, simple in structure, is easy to debug, improve that CPT atomic frequencies tame automatically control and autonomous operation so that
CPT atomic frequencies, which are tamed, becomes flexible and easy to operate.
The application is described in further detail with reference to the accompanying drawings of the specification, it is clear that described embodiment is only
It is some embodiments of the present application, instead of all the embodiments.Based on the embodiment in the application, ordinary skill people
All other embodiment that member is obtained without making creative work, shall fall in the protection scope of this application.
Fig. 1 is the flow diagram that a kind of CPT atomic frequencies provided by the embodiments of the present application tame control method.It is described
Taming control method can be as follows.
The embodiment of the present application is configured in CPT atomic clocks tames controller, this, which tames controller, can be based on FPGA (scenes
Programmable gate array, Field-Programmable Gate Array) it realizes, other programming devices can also be based on and realized,
Here it is not specifically limited.
Step 101：The taming controller determines the local frequency of the CPT atomic clocks, and based on the local frequency
Frequency dividing obtains the first pps pulse per second signal.
In the embodiment of the present application, the taming controller completes initial configuration under open state.Assuming that tame control
Device processed is realized by FPGA, then carries out initial configuration to each module in FPGA inside and periphery under open state, specifically
It may include：Chip clock configuration, the configuration of C field voltages, quantized system and the configuration of laser temperature point, phase-locked loop chip configuration, mould
Number/digital-to-analogue chip configuration etc..
It tames controller to control quantized system and laser into trip temperature in the opening initialization stage, and stablizes in temperature
Afterwards, laser frequency is locked；And microwave frequency is locked after laser frequency lock, the microwave frequency locked at this time is what is determined
The local frequency of CPT atomic clocks.
Specifically, the taming controller controls quantized system and laser into trip temperature；And stablize in the temperature
In the case of, determine the local frequencies of the CPT atomic clocks.
In addition, taming controller after local frequency is locked, the local frequency of CPT atomic clocks is divided using frequency divider
Frequency is handled, and obtains your the first pps pulse per second signal.
Step 102：The second pps pulse per second signal that the taming controller reception is inputted by outside port.
In the embodiment of the present application, the second pps pulse per second signal that controller reception is inputted by outside port is tamed.
More preferably, controller is tamed in the case of the second pps pulse per second signal received, it can also be to the second pulse per second (PPS)
The validity of signal is judged.
Specifically, tame whether the second pps pulse per second signal that controller judgement receives meets setting condition, if satisfied, then
Perform step 103；Otherwise, continue to monitor outside port, receive next second pps pulse per second signal that outside port is sent.
It should be noted that it is satellite that setting condition recorded in the embodiment of the present application, which is second pps pulse per second signal,
The timing information of signal, second pps pulse per second signal are not less than in the corresponding timing information of frequency of the local frequency
It is a kind of.
Step 103：The taming controller is based on first pps pulse per second signal and second pps pulse per second signal, determines
The frequency offset of the local frequency of the CPT atomic clocks in setting time interval.
In the embodiment of the present application, first, the taming controller utilizes local oscillator frequency of the frequency multiplier to the CPT atomic clocks
Rate carries out process of frequency multiplication, obtains the sub- frequency doubling clock of the equiphase difference of setting quantity.
Specifically, when the taming controller utilizes frequency multiplier to the local frequency of the CPT atomic clocks corresponding local oscillator
Clock carries out M times of process of frequency multiplication, obtains frequency doubling clock；
The taming controller carries out quantization delay processing using the frequency multiplier to the frequency doubling clock, generates K groups
The sub- frequency doubling clock of equiphase difference, the time delay between the sub- frequency doubling clock of each equiphase difference are Tosc/ (M*K), phase difference are
360°/K；
Wherein, the cycle T of the frequency doubling clock is Tosc/ M, the period of the local frequency is Tosc=1/fosc, it is described
The local frequency of CPT atomic clocks is fosc, M and N are natural number.
Secondly, the taming controller is using the rising edge of second pps pulse per second signal as start time, with described first
The rising edge of pps pulse per second signal is end time, is counted to setting the sub- frequency doubling clock of equiphase difference of quantity, obtains institute
State the frequency offset of the local frequency of CPT atomic clocks.
Assuming that generate K groups equiphase difference sub- frequency doubling clock be C1, C2 ..., Ck, then with second pulse per second (PPS)
The rising edge of signal is start time, using the rising edge of first pps pulse per second signal as end time, during with the sub- frequency multiplication
Clock count to get respectively a1, a2 ..., ak, statistics obtain A=a1+a2+ ...+ak, A are the local oscillator of the CPT atomic clocks
The frequency offset of frequency.
It should be noted that the measurement accuracy of time interval measurement method is measured for local frequency in the embodiment of the present application
M*K times of precision, measurement resolution here can reach hundred picosecond magnitudes according to used fpga chip.
More preferably, in the embodiment of the present application, the taming controller is in the case where determining the frequency offset, institute
The method of stating further includes：
The taming controller is filtered the frequency offset.
Taming controller can carry out the frequency offset kalman filtering, effectively inhibit the phase of frequency offset
Shake.
Step 104：The taming controller according to the frequency offset, to the local frequencies of the CPT atomic clocks into
Row tames adjustment.
In the embodiment of the present application, the taming controller is determining the frequency offset more than the first given threshold
In the case of, according to the frequency offset, the configuration parameter of phase-locked loop chip is adjusted, so that the local oscillator of the CPT atomic clocks
Frequency is adjusted.
It should be noted that controller is tamed in the case where determining that the frequency offset is more than the first given threshold,
Based on the size of the frequency offset, the configuration parameter of phase-locked loop chip is adjusted, the phase-locked loop chip recorded here
Configuration parameter can be understood as the configuration parameter of opening initialization, for the adjusting range of the configuration parameter of phase-locked loop chip,
It can be determined based on the size of the frequency offset, be not specifically limited here.
The taming controller is determining the frequency offset no more than the first given threshold and more than the second setting threshold
In the case of value, according to the frequency offset, C field voltage values are adjusted, so that the local frequency of the CPT atomic clocks is able to
Adjustment.
Determining the frequency offset no more than the first given threshold and more than the it should be noted that taming controller
In the case of two given thresholds, according to the size of the frequency offset, frequency deviation correction feedback quantity is determined；It is anti-according to frequency deviation correction
Feedback amount is adjusted by modulus/D/A converter module to loading the voltage on C fields.Here frequency deviation correction feedback quantity with C
Meet certain condition between the adjustment amount of voltage, the condition is not specifically limited in the embodiment of the present application.
More preferably, the taming controller is determining the frequency offset no more than in the case of the second given threshold,
Triggering performs the operation being detected to the validity of second pps pulse per second signal.
By technical solution provided by the embodiments of the present application, comprising controller is tamed in CPT atomic clocks, this tames controller
It determines the local frequency of the CPT atomic clocks, and divides to obtain the first pps pulse per second signal based on the local frequency；Reception passes through
Second pps pulse per second signal of outside port input；Based on first pps pulse per second signal and second pps pulse per second signal, determine
The frequency offset of the local frequency of the CPT atomic clocks in setting time interval；According to the frequency offset, to described
The local frequency of CPT atomic clocks carries out taming adjustment.Short time interval measurement side that can be based on frequency frequency multiplication and quantization delay
Method accurately measures the frequency shift (FS) of CPT atomic clocks, and according to frequency shift (FS) size, proposes that different frequencies tames controlling party
Method realizes the frequency that CPT atomic clocks are tamed in the short time, and to inhibit the frequency drift problem of CPT atomic clocks, and the application is real
Taming controller of the mode of example offer built in by CPT atomic clocks is applied to realize, it is simple in structure, it is easy to debug, improves CPT originals
What secondary clock frequency was tamed automatically control and autonomous operation so that CPT atomic frequencies, which are tamed, becomes flexible and easy to operate.
Fig. 2 is the flow diagram that a kind of CPT atomic frequencies provided by the embodiments of the present application tame control method.It is described
Method can be as follows.
Step 201：The taming controller completes initial configuration under open state.
Step 202：The taming controller controls quantized system and laser into trip temperature；And stablize in the temperature
In the case of, determine the local frequencies of the CPT atomic clocks.
Step 203：It tames controller and scaling down processing is carried out to the local frequency of CPT atomic clocks using frequency divider, obtain you
First pps pulse per second signal.
Step 204：The second pps pulse per second signal that the taming controller reception is inputted by outside port.
Step 205：Tame whether the second pps pulse per second signal that controller judgement receives meets setting condition, if satisfied,
Then perform step 206；Otherwise, continue to monitor outside port, receive next second pps pulse per second signal that outside port is sent.
It should be noted that it is satellite that setting condition recorded in the embodiment of the present application, which is second pps pulse per second signal,
The timing information of signal, second pps pulse per second signal are not less than in the corresponding timing information of frequency of the local frequency
It is a kind of.
Step 206：When the taming controller utilizes frequency multiplier to the local frequency of the CPT atomic clocks corresponding local oscillator
Clock carries out M times of process of frequency multiplication, obtains frequency doubling clock.
Step 207：The taming controller carries out the frequency doubling clock quantization delay processing, production using the frequency multiplier
The sub- frequency doubling clock of the equiphase difference of raw K groups, the time delay between the sub- frequency doubling clock of each equiphase difference is Tosc/ (M*K), phase
Difference is 360 °/K.
Wherein, the cycle T of the frequency doubling clock is Tosc/ M, the period of the local frequency is Tosc=1/fosc, it is described
The local frequency of CPT atomic clocks is fosc, M and N are natural number.
Step 208：The taming controller is using the rising edge of second pps pulse per second signal as start time, with described
The rising edge of one-second burst signal is end time, counts, obtains to setting the sub- frequency doubling clock of equiphase difference of quantity
The frequency offset of the local frequency of the CPT atomic clocks.
Step 209：The taming controller is filtered the frequency offset.
Step 210：The taming controller judges whether the frequency offset is more than the first given threshold, if is more than
Second given threshold performs following steps respectively according to judging result：
Step 211：The taming controller is in the case where determining that the frequency offset is more than the first given threshold, root
According to the frequency offset, the configuration parameter of phase-locked loop chip is adjusted, so that the local frequency of the CPT atomic clocks is adjusted
It is whole.
Step 212：The taming controller is determining the frequency offset no more than the first given threshold and more than the
In the case of two given thresholds, according to the frequency offset, C field voltage values are adjusted, so that the local oscillator of the CPT atomic clocks
Frequency is adjusted.
Step 213：The taming controller is determining the frequency offset no more than in the case of the second given threshold,
Triggering performs the operation being detected to the validity of second pps pulse per second signal.
It should be noted that the first given threshold is more than the second given threshold.
The taming control method provided in the embodiment of the present application can be between the short time based on frequency frequency multiplication and quantization delay
Every measuring method, the frequency shift (FS) of CPT atomic clocks is accurately measured, and according to frequency shift (FS) size, propose that different frequencies is tamed and dociled
Control method is taken, realizes the frequency that CPT atomic clocks are tamed in the short time, to inhibit the frequency drift problem of CPT atomic clocks, and
Taming controller of the mode provided by the embodiments of the present application built in by CPT atomic clocks is realized, simple in structure, is easy to debug, be carried
Risen that CPT atomic frequencies tame automatically control and autonomous operation so that CPT atomic frequencies, which are tamed, becomes flexible and operation
It is convenient.
Fig. 3 is the structure diagram that a kind of CPT atomic frequencies provided by the embodiments of the present application tame control device.It is described
Taming control device is contained in the CPT atomic clocks, including：
Determination unit 301 for determining the local frequency of the CPT atomic clocks, and is divided based on the local frequency
To the first pps pulse per second signal；
Receiving unit 302, for receiving the second pps pulse per second signal inputted by outside port；
Processing unit 303, for being based on first pps pulse per second signal and second pps pulse per second signal, when determining setting
Between interval in the CPT atomic clocks local frequency frequency offset；
Adjustment unit 304, for according to the frequency offset, being tamed to the local frequency of the CPT atomic clocks
Adjustment.
In another embodiment of the application, the processing unit 303 is based on first pps pulse per second signal and described
Second pps pulse per second signal determines the frequency offset of the local frequency of CPT atomic clocks in setting time interval, including：
Process of frequency multiplication is carried out to the local frequency of the CPT atomic clocks using frequency multiplier, obtains the equiphase of setting quantity
The sub- frequency doubling clock of difference；
Using the rising edge of second pps pulse per second signal as start time, using the rising edge of first pps pulse per second signal as
End time counts to setting the sub- frequency doubling clock of equiphase difference of quantity, obtains the local frequency of the CPT atomic clocks
Frequency offset.
In another embodiment of the application, the processing unit 303 is using frequency multiplier to the sheet of the CPT atomic clocks
Vibration frequency carries out process of frequency multiplication, obtains the sub- frequency doubling clock of the equiphase difference of setting quantity, including：
M times of process of frequency multiplication is carried out to the corresponding local oscillator clock of the local frequency of the CPT atomic clocks using frequency multiplier, is obtained
To frequency doubling clock；
Quantization delay processing is carried out to the frequency doubling clock using the frequency multiplier, generates the son times of the equiphase difference of K groups
Frequency clock, the time delay between the sub- frequency doubling clock of each equiphase difference are Tosc/ (M*K), phase difference are 360 °/K；
Wherein, the cycle T of the frequency doubling clock is Tosc/ M, the period of the local frequency is Tosc=1/fosc, it is described
The local frequency of CPT atomic clocks is fosc, M and N are natural number.
In another embodiment of the application, the processing unit 303 is based on first pps pulse per second signal and described
Second pps pulse per second signal determines the frequency offset of the local frequency of CPT atomic clocks in setting time interval, including：
In the case where determining that second pps pulse per second signal meets and imposes a condition, based on first pps pulse per second signal and
Second pps pulse per second signal determines the frequency offset of the local frequency of CPT atomic clocks in setting time interval；
Wherein, described impose a condition as second pps pulse per second signal is the timing information of satellite-signal, not less than described
One kind in the corresponding timing information of frequency of local frequency.
In another embodiment of the application, the taming control device further includes：Filter unit 305, wherein：
The filter unit 305, in the case where determining the frequency offset, being carried out to the frequency offset
Filtering process.
In another embodiment of the application, the adjustment unit 304 is according to the frequency offset, to the CPT
The local frequency of atomic clock carries out taming adjustment, including：
In the case where determining that the frequency offset is more than the first given threshold, according to the frequency offset, adjustment
The configuration parameter of phase-locked loop chip, so that the local frequency of the CPT atomic clocks is adjusted.
In another embodiment of the application, the adjustment unit 304 is according to the frequency offset, to the CPT
The local frequency of atomic clock carries out taming adjustment, including：
The frequency offset is being determined no more than the first given threshold and in the case of being more than the second given threshold, according to
The frequency offset adjusts C field voltage values, so that the local frequency of the CPT atomic clocks is adjusted.
In another embodiment of the application, the taming control device further includes：Detection unit 306, wherein,
The detection unit 306, in the case where determining that the frequency offset is not more than the second given threshold, touching
Hair performs the operation being detected to the validity of second pps pulse per second signal.
In another embodiment of the application, the determination unit 301 determines the local frequency of the CPT atomic clocks,
Including：
Quantized system and laser are controlled into trip temperature；
In the case where the temperature is stablized, the local frequency of the CPT atomic clocks is determined.
It should be noted that taming control device provided by the embodiments of the present application can be realized by software mode, also may be used
To be realized by hardware mode, it is not specifically limited here.The taming control device provided in the embodiment of the present application can be based on
The short interval measurement method of frequency frequency multiplication and quantization delay accurately measures the frequency shift (FS) of CPT atomic clocks, and according to frequency
Rate bias size proposes that different frequencies tames control method, realizes the frequency that CPT atomic clocks are tamed in the short time, to inhibit
The frequency drift problem of CPT atomic clocks, and taming control of the mode provided by the embodiments of the present application built in by CPT atomic clocks
Device is realized, simple in structure, is easy to debug, improve that CPT atomic frequencies tame automatically control and autonomous operation so that CPT
Atomic frequency, which is tamed, becomes flexible and easy to operate.
It will be understood by those skilled in the art that embodiments herein can be provided as method, apparatus (equipment) or computer
Program product.Therefore, in terms of the application can be used complete hardware embodiment, complete software embodiment or combine software and hardware
Embodiment form.Moreover, the meter for wherein including computer usable program code in one or more can be used in the application
The computer journey that calculation machine usable storage medium is implemented on (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of sequence product.
The application is the flow chart with reference to method, apparatus (equipment) and computer program product according to the embodiment of the present application
And/or block diagram describes.It should be understood that each flow in flowchart and/or the block diagram can be realized by computer program instructions
And/or the flow in box and flowchart and/or the block diagram and/or the combination of box.These computer programs can be provided to refer to
The processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is enabled to generate
One machine so that the instruction generation performed by computer or the processor of other programmable data processing devices is used to implement
The device of function specified in one flow of flow chart or multiple flows and/or one box of block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction generation being stored in the computer-readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps are performed on calculation machine or other programmable devices to generate computer implemented processing, so as in computer or
The instruction offer performed on other programmable devices is used to implement in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although the preferred embodiment of the application has been described, those skilled in the art once know basic creation
Property concept, then additional changes and modifications may be made to these embodiments.So appended claims be intended to be construed to include it is excellent
It selects embodiment and falls into all change and modification of the application range.
Obviously, those skilled in the art can carry out the application essence of the various modification and variations without departing from the application
God and range.In this way, if these modifications and variations of the application belong to the range of the application claim and its equivalent technologies
Within, then the application is also intended to include these modifications and variations.
Claims (10)
1. a kind of CPT atomic frequencies tame control method, which is characterized in that it is included in the CPT atomic clocks and tames controller,
Wherein：
The taming controller determines the local frequency of the CPT atomic clocks, and divides to obtain first based on the local frequency
Pps pulse per second signal；
The second pps pulse per second signal that the taming controller reception is inputted by outside port；
The taming controller is based on first pps pulse per second signal and second pps pulse per second signal, determines setting time interval
The frequency offset of the local frequency of the interior CPT atomic clocks；
The taming controller carries out the local frequency of the CPT atomic clocks to tame adjustment according to the frequency offset.
2. taming control method according to claim 1, which is characterized in that the taming controller is based on described first second
Pulse signal and second pps pulse per second signal determine the frequency of the local frequency of CPT atomic clocks in setting time interval
Rate offset, including：
The taming controller carries out process of frequency multiplication using frequency multiplier to the local frequency of the CPT atomic clocks, obtains setting number
The sub- frequency doubling clock of the equiphase difference of amount；
The taming controller is using the rising edge of second pps pulse per second signal as start time, with first pps pulse per second signal
Rising edge for end time, counted to setting the sub- frequency doubling clock of equiphase difference of quantity, obtain the CPT atomic clocks
Local frequency frequency offset.
3. taming control method according to claim 2, which is characterized in that the taming controller is using frequency multiplier to institute
The local frequency for stating CPT atomic clocks carries out process of frequency multiplication, obtains the sub- frequency doubling clock of the equiphase difference of setting quantity, including：
The taming controller carries out M times using frequency multiplier to the corresponding local oscillator clock of the local frequency of the CPT atomic clocks
Process of frequency multiplication obtains frequency doubling clock；
The taming controller using the frequency multiplier to the frequency doubling clock carry out quantization delay processing, generate K groups etc. phases
The sub- frequency doubling clock of potential difference, the time delay between the sub- frequency doubling clock of each equiphase difference are Tosc/ (M*K), phase difference are 360 °/K；
Wherein, the cycle T of the frequency doubling clock is Tosc/ M, the period of the local frequency is Tosc=1/fosc, the CPT originals
The local frequency of secondary clock is fosc, M and N are natural number.
4. taming control method according to claim 1, which is characterized in that the taming controller is based on described first second
Pulse signal and second pps pulse per second signal determine the frequency of the local frequency of CPT atomic clocks in setting time interval
Rate offset, including：
The taming controller was in the case where determining that second pps pulse per second signal meets setting condition, based on described first second
Pulse signal and second pps pulse per second signal determine the frequency of the local frequency of CPT atomic clocks in setting time interval
Rate offset；
Wherein, described impose a condition as second pps pulse per second signal is the timing information of satellite-signal, not less than the local oscillator
One kind in the corresponding timing information of frequency of frequency.
5. taming control method according to claim 1, which is characterized in that the taming controller is determining the frequency
In the case of offset, the method further includes：
The taming controller is filtered the frequency offset.
6. taming control method according to claim 1, which is characterized in that the taming controller is inclined according to the frequency
Shifting amount carries out the local frequency of the CPT atomic clocks to tame adjustment, including：
The taming controller is inclined according to the frequency in the case where determining that the frequency offset is more than the first given threshold
Shifting amount adjusts the configuration parameter of phase-locked loop chip, so that the local frequency of the CPT atomic clocks is adjusted.
7. taming control method according to claim 1, which is characterized in that the taming controller is inclined according to the frequency
Shifting amount carries out the local frequency of the CPT atomic clocks to tame adjustment, including：
The taming controller is determining the frequency offset no more than the first given threshold and more than the second given threshold
In the case of, according to the frequency offset, C field voltage values are adjusted, so that the local frequency of the CPT atomic clocks is adjusted
It is whole.
8. taming control method according to claim 1, which is characterized in that the method further includes：
The taming controller is determining the frequency offset no more than in the case of the second given threshold, and triggering is performed to institute
State the operation that the validity of the second pps pulse per second signal is detected.
9. taming control method according to claim 1, which is characterized in that the taming controller determines that the CPT is former
The local frequency of secondary clock, including：
The taming controller controls quantized system and laser into trip temperature；
The taming controller determines the local frequency of the CPT atomic clocks in the case where the temperature is stablized.
10. a kind of CPT atomic frequencies tame control device, which is characterized in that the taming control device is contained in the CPT
In atomic clock, including：
Determination unit for determining the local frequency of the CPT atomic clocks, and divides to obtain first second based on the local frequency
Pulse signal；
Receiving unit, for receiving the second pps pulse per second signal inputted by outside port；
Processing unit for being based on first pps pulse per second signal and second pps pulse per second signal, determines setting time interval
The frequency offset of the local frequency of the interior CPT atomic clocks；
Adjustment unit, for according to the frequency offset, carrying out taming adjustment to the local frequency of the CPT atomic clocks.
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| CN113777640A (en) * | 2021-08-31 | 2021-12-10 | 武汉耐维斯顿科技有限公司 | Beidou coherent system and equipment for unmanned aerial vehicle detection and positioning |
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| CN105049040B (en) * | 2015-06-24 | 2017-12-15 | 中国科学院武汉物理与数学研究所 | A kind of method that Atomic Clocks Based on Coherent Population Trapping output frequency is corrected using GNSS |
| CN105610440A (en) * | 2015-12-17 | 2016-05-25 | 北京无线电计量测试研究所 | Method and device for adjusting CPT atomic frequency standard |
| CN107202577A (en) * | 2017-06-08 | 2017-09-26 | 南京理工大学 | A kind of micro- PNT systems based on GNSS, chip atomic clock and micro- inertial navigation |
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| CN113777640A (en) * | 2021-08-31 | 2021-12-10 | 武汉耐维斯顿科技有限公司 | Beidou coherent system and equipment for unmanned aerial vehicle detection and positioning |
| CN113777640B (en) * | 2021-08-31 | 2023-12-15 | 武汉耐维斯顿科技有限公司 | Beidou coherent system and equipment aiming at unmanned aerial vehicle detection and positioning |
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