CN109085616A - A kind of satellite timing method, device and storage medium - Google Patents
A kind of satellite timing method, device and storage medium Download PDFInfo
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- CN109085616A CN109085616A CN201811002433.5A CN201811002433A CN109085616A CN 109085616 A CN109085616 A CN 109085616A CN 201811002433 A CN201811002433 A CN 201811002433A CN 109085616 A CN109085616 A CN 109085616A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
- G01S19/25—Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS
- G01S19/256—Acquisition or tracking or demodulation of signals transmitted by the system involving aiding data received from a cooperating element, e.g. assisted GPS relating to timing, e.g. time of week, code phase, timing offset
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Abstract
The present invention provides a kind of satellite timing method, device and storage medium, and a kind of satellite timing method includes: reception satellite-signal, obtains GPS 1PPS signal and navigation positioning data information by satellite-signal；It calculates GPS 1PPS signal and divides the phase difference of 1PPS, the corresponding phase of 1PPS is divided according to adjusting offset, local 1PPS signal is obtained according to the frequency dividing 1PPS signal of adjusted phase；Time service mode or punctual mode are selected according to satellite geometry dilution of precision PDOP value；Judge whether the state of local 1PPS signal is normal, the output signal directly by local 1PPS signal as time service mode is chosen whether using this；Accurately local 1PPS signal can be calculated in the present invention, it is preferable to reduce signal output error, and time service mode or punctual mode are selected by satellite geometry dilution of precision PDOP value, determined whether to export as preferred signal according to the state of local 1PPS signal, improves the stability of time service.
Description
Technical field
The invention mainly relates to Service of Timing process fields, and in particular to a kind of satellite timing method, device and storage are situated between
Matter.
Background technique
High-precision time service is most important to entire society's development, is related to many passes of national energy, economy and society safety
Key infrastructure, such as communication system, electric system, financial system, the railway system, when effectively operation all relies on high-precision
Between it is synchronous；
There are many time service methods, can be divided into long shortwave time service, telephone time service, internet time service according to existing time service means
And satellite time transfer etc..Now widely used satellite time transfer is that broadcast or transmission standards time are carried out by navigation satellite
The time service means of signal；Satellite time transfer can be divided into two-way timing and one-way timing again, and unilateral time transmission method is mainly that receiver is logical
Reception navigation message and relevant information are crossed, clock deviation amendment local zone time is independently calculated by user, makes local zone time and satellite system
System time synchronization.
Current unilateral time transmission method has that time service error is larger, for example, complementary using satellite clock and crystal oscillator
The method that feature carrys out output frequency signal, common crystal oscillator is difficult meet the needs of high-precise synchronization control field, even high
Precision crystal oscillator, with using the time to elapse, accumulated error constantly increases, and crystal oscillator aging itself also results in certain frequency
Drift.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of satellite timing method, dress
It sets and storage medium.
The technical scheme to solve the above technical problems is that a kind of satellite timing method, includes the following steps:
Satellite-signal is received, GPS 1PPS signal and navigation positioning data information are obtained by the satellite-signal；
By rubidium atomic clock output frequency signal, the frequency signal is subjected to scaling down processing, obtains frequency dividing 1PPS signal,
It calculates the GPS 1PPS signal and divides the phase difference of 1PPS signal, 1PPS signal is divided according to the adjusting offset
Corresponding phase obtains local 1PPS signal according to the frequency dividing 1PPS signal of adjusted phase；
Satellite geometry dilution of precision PDOP value is determined according to the navigation positioning data information, and according to the satellite geometry
Dilution of precision PDOP value selects time service mode or punctual mode；
When selecting punctual mode, using the local 1PPS signal as the output signal for the mode of keeping time,
When selecting time service mode, judge whether the state of the local 1PPS signal is normal, it will be described if normal
Otherwise output signal of the local 1PPS signal as time service mode is believed the GPS 1PPS signal as the output of time service mode
Number.
Another technical solution that the present invention solves above-mentioned technical problem is as follows: a kind of satellite time transfer device, comprising:
Satellite-signal processing module obtains GPS1PPS signal by the satellite-signal and leads for receiving satellite-signal
Navigate location data information；
Processing module, for the frequency signal being carried out scaling down processing, is obtained by rubidium atomic clock output frequency signal
1PPS signal is divided, the GPS 1PPS signal is calculated and divides the phase difference of 1PPS signal, according to the adjusting offset institute
The corresponding phase of frequency dividing 1PPS signal is stated, local 1PPS signal is obtained according to the frequency dividing 1PPS signal of adjusted phase；
Mode selection module, for determining satellite geometry dilution of precision PDOP value according to the navigation positioning data information,
And time service mode or punctual mode are selected according to the satellite geometry dilution of precision PDOP value；
The processing module is also used to when selecting punctual mode, using the local 1PPS signal as punctual mode
Output signal,
When selecting time service mode, judge whether the state of the local 1PPS signal is normal, it will be described if normal
Otherwise output signal of the local 1PPS signal as time service mode is believed the GPS 1PPS signal as the output of time service mode
Number.
The beneficial effects of the present invention are: the phase difference of GPS 1PPS signal and frequency dividing 1PPS signal by calculating satellite
It is modified to obtain accurately local 1PPS signal, signal output error is reduced preferably with the modification method of acted as reference mutual,
And time service mode or punctual mode are selected by satellite geometry dilution of precision PDOP value, according to the state of local 1PPS signal come
Determine whether to export as preferred signal, improves the stability of time service.
Detailed description of the invention
Fig. 1 is the method flow diagram for the satellite timing method that one embodiment of the invention provides；
Fig. 2 is the module frame chart for the satellite time transfer device that one embodiment of the invention provides；
Fig. 3 be another embodiment of the present invention provides satellite time transfer device module frame chart；
Fig. 4 is the schematic flow chart for the calculating phase difference that one embodiment of the invention provides.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
Fig. 1 is the method flow diagram for the satellite timing method that one embodiment of the invention provides；
As shown in Figure 1, a kind of satellite timing method, includes the following steps:
Satellite-signal is received, GPS 1PPS signal and navigation positioning data information are obtained by the satellite-signal；
By rubidium atomic clock output frequency signal, the frequency signal is subjected to scaling down processing, obtains frequency dividing 1PPS signal,
It calculates the GPS 1PPS signal and divides the phase difference of 1PPS signal, 1PPS signal is divided according to the adjusting offset
Corresponding phase obtains local 1PPS signal according to the frequency dividing 1PPS signal of adjusted phase；
Satellite geometry dilution of precision PDOP value is determined according to the navigation positioning data information, and according to the satellite geometry
Dilution of precision PDOP value selects time service mode or punctual mode；
When selecting punctual mode, using the local 1PPS signal as the output signal for the mode of keeping time,
When selecting time service mode, judge whether the state of the local 1PPS signal is normal, it will be described if normal
Otherwise output signal of the local 1PPS signal as time service mode is believed the GPS 1PPS signal as the output of time service mode
Number.
Specifically, described select time service mode or punctual mode according to the satellite geometry dilution of precision PDOP value, comprising:
If the satellite geometry dilution of precision PDOP value is greater than 3, punctual mode is selected, time service mould is otherwise selected
Formula.
In above-described embodiment, repaired by the GPS 1PPS signal for calculating satellite and the phase difference for dividing 1PPS signal
Just to obtain accurately local 1PPS signal, signal output error is reduced preferably with the modification method of acted as reference mutual, and pass through
Satellite geometry dilution of precision PDOP value selects time service mode or punctual mode, and state according to local 1PPS signal is to determine
It is no to be exported as preferred signal, improve the stability of time service.
Optionally, as an embodiment of the present invention, it when selecting time service mode or punctual mode, further comprises the steps of:
Original observed data is obtained by the satellite-signal, the original observed data is resolved, clock deviation is obtained
Correction value；
Local clock is corrected according to the clock deviation correction value, the local clock after correction is synchronized to seleced time service mould
The UTC clock of formula or punctual mode.
Optionally, as an embodiment of the present invention, described that the original observed data is resolved, obtain clock deviation
Correction value specifically includes:
The original observed data is resolved to obtain receiver location and reception according to weighted least-squares method algorithm
Machine clock deviation；
The receiver location and receiver clock-offsets are calculated according to Higher Difference Method algorithm between epoch, clock deviation is obtained and repairs
Positive value.
It in above-described embodiment, is resolved to obtain clock deviation correction value by original observed data, passes through clock deviation correction value school
Positive local clock.
Optionally, as an embodiment of the present invention, described by rubidium atomic clock output frequency signal, by the frequency
Signal frequency split obtains frequency dividing 1PPS signal, comprising:
The rubidium atomic clock output signal is 10M frequency signal, carries out process of frequency multiplication to the 10M frequency signal, obtains
Frequency-doubled signal；
The frequency-doubled signal is subjected to scaling down processing, obtains frequency dividing 1PPS signal.
Specifically, rubidium atomic clock is chip-scale rubidium atomic clock.
In above-described embodiment, the frequency signal that rubidium atomic clock output signal is 10M can be subjected to frequency multiplication, be conducive at frequency dividing
Reason obtains frequency dividing 1PPS signal, improves signal accuracy.
Optionally, as an embodiment of the present invention, the phase for calculating GPS 1PPS signal and dividing 1PPS signal
Potential difference, including phase bigness scale step and phase carefully survey step:
The phase bigness scale step are as follows: GPS 1PPS signal is obtained according to pulse counting method and divides the phase of 1PPS signal
Position calculates the difference of the rising edge phase of GPS 1PPS signal and the rising edge phase of frequency dividing 1PPS signal, obtains first phase difference；
The phase carefully surveys step are as follows: it is corresponding less than signal period second to measure chip measurement by the TDC-GP22 time
The phase of GPS 1PPS signal and frequency dividing 1PPS signal, and calculate and be less than signal period second corresponding GPS 1PPS signal
The difference of rising edge phase and the rising edge phase of frequency dividing 1PPS signal, it is poor to obtain second phase；
It sums to the first phase difference and second phase difference, obtain the GPS 1PPS signal and divides 1PPS signal
Phase difference.
Since frequency dividing 1PPS its signal period of signal obtained after scaling down processing is 5ns, and the measurement accuracy of phase bigness scale
For positive and negative 5ns, and phase difference of the period less than 5ns is unable to measure, and therefore, phase carefully surveys the high-precision TDC-GP22 of part use
Time measures chip to measure less than the signal period second i.e. phase difference of 5ns, measurement accuracy 50ps, therefore can accurately survey
Measure the phase difference less than 5ns.
Optionally, as an embodiment of the present invention, judge whether the state of the local 1PPS signal is normal, wrap
It includes:
Judge whether the local 1PPS signal and the phase difference of GPS 1PPS signal are less than predetermined deviation value, and the phase
Whether the duration that potential difference is less than the state of predetermined deviation value is greater than preset time, by the local 1PPS if being all satisfied
Output signal of the signal as time service mode, otherwise using the GPS 1PPS signal as the output signal of time service mode.
For example, predetermined deviation value is 5ns, duration 10s.
In above-described embodiment, the state status of local 1PPS signal is judged, the preferred local 1PPS letter if complying with standard
Number be used as time service mode output signal, otherwise will be using GPS 1PPS signal as output signal.
Fig. 2 is the module frame chart for the satellite time transfer device that one embodiment of the invention provides；
Optionally, as an embodiment of the present invention, as shown in Fig. 2, a kind of satellite time transfer device, comprising:
Satellite-signal processing module obtains GPS1PPS signal by the satellite-signal and leads for receiving satellite-signal
Navigate location data information；
Processing module, for the frequency signal being carried out scaling down processing, is obtained by rubidium atomic clock output frequency signal
1PPS signal is divided, the GPS 1PPS signal is calculated and divides the phase difference of 1PPS signal, according to the adjusting offset institute
The corresponding phase of frequency dividing 1PPS signal is stated, local 1PPS signal is obtained according to the frequency dividing 1PPS signal of adjusted phase；
Mode selection module, for determining satellite geometry dilution of precision PDOP value according to the navigation positioning data information,
And time service mode or punctual mode are selected according to the satellite geometry dilution of precision PDOP value；
The processing module is also used to when selecting punctual mode, using the local 1PPS signal as punctual mode
Output signal,
When selecting time service mode, judge whether the state of the local 1PPS signal is normal, it will be described if normal
Otherwise output signal of the local 1PPS signal as time service mode is believed the GPS 1PPS signal as the output of time service mode
Number.
Specifically, as shown in figure 3, the satellite-signal processing module includes at u-blox M8T processing submodule and ARM
Submodule is managed, u-blox M8T processing submodule is for receiving satellite-signal and location information, and ARM processing submodule is for locating
The GPS 1PPS signal and navigation positioning data information that reason satellite-signal obtains.
Optionally, as an embodiment of the present invention, the processing module is used for:
It is 10M frequency signal by the rubidium atomic clock output signal；
Process of frequency multiplication is carried out to the 10M frequency signal, obtains frequency-doubled signal；
The frequency-doubled signal is subjected to scaling down processing, obtains frequency dividing 1PPS signal.
Specifically, rubidium atomic clock is chip-scale rubidium atomic clock；
Specifically, as shown in figure 3, the processing module includes FPGA processing submodule and phase demodulation submodule:
The phase demodulation submodule, for calculating the GPS 1PPS signal and dividing the phase difference of 1PPS signal；
The FPGA processing submodule includes frequency unit and phase-shifting unit:
The frequency unit obtains frequency dividing 1PPS signal for the frequency-doubled signal to be carried out scaling down processing；
The phase-shifting unit, for the corresponding phase of frequency dividing 1PPS signal according to the adjusting offset, according to warp
The phase of adjustment obtains local 1PPS signal.
In above-described embodiment, what when process of frequency multiplication was handled by external frequency multiplier, external frequency multiplier will be handled
Obtained frequency-doubled signal sends the frequency unit of the FPGA processing chip.
Optionally, as an embodiment of the present invention, as shown in figure 4, the phase demodulation submodule of the processing module, specifically
It is carefully surveyed for phase bigness scale and phase:
The phase bigness scale is to obtain GPS 1PPS signal according to pulse counting method and divide the phase of 1PPS signal, meter
The difference for calculating the rising edge phase of GPS 1PPS signal and the rising edge phase of frequency dividing 1PPS signal, obtains first phase difference；
The phase carefully surveys step, and it is corresponding less than signal period second to measure chip measurement by the TDC-GP22 time
The difference of the rising edge phase of the rising edge phase and frequency dividing 1PPS signal of GPS 1PPS signal, it is poor to obtain second phase；
It sums to the first phase difference and second phase difference, obtain the GPS 1PPS signal and divides 1PPS signal
Phase difference.
Since frequency dividing 1PPS its signal period of signal obtained after scaling down processing is 5ns, and the measurement accuracy of phase bigness scale
For positive and negative 5ns, and phase difference of the period less than 5ns is unable to measure, and therefore, phase carefully surveys the high-precision TDC-GP22 of part use
Time measures chip to measure less than the signal period second i.e. phase difference of 5ns, measurement accuracy 50ps, therefore can accurately survey
Measure the phase difference less than 5ns.
Optionally, as an embodiment of the present invention, the AMR processing unit of the satellite-signal processing module is used
In obtaining original observed data by the satellite-signal, the original observed data is resolved, clock deviation correction value is obtained；
The FPGA processing submodule further includes clock correction unit, is also used to be corrected according to the clock deviation correction value local
Local clock after correction is synchronized to the UTC clock of seleced time service mode or punctual mode by clock.
Optionally, as an embodiment of the present invention, the ARM processing submodule of the satellite-signal processing module is also used
In:
Original observed data is obtained by the satellite-signal, the original observed data is resolved, clock deviation is obtained
Correction value；
Local clock is corrected according to the clock deviation correction value, the local clock after correction is synchronized to seleced time service mould
The UTC clock of formula or punctual mode.
Optionally, as an embodiment of the present invention, the ARM processing submodule of the satellite-signal processing module is specific
For:
According to weighted least-squares method algorithm in the original observed data resolved to obtain receiver location and
Receiver clock-offsets；
The receiver location and receiver clock-offsets are calculated according to Higher Difference Method algorithm between epoch, clock deviation is obtained and repairs
Positive value.
Optionally, as an embodiment of the present invention, the processing module further includes signal condition judging submodule:
Judge whether the phase difference of the local 1PPS signal and GPS 1PPS signal is less than predetermined deviation value and judges
Whether the time for keeping phase difference to be less than the state of predetermined deviation value is greater than preset time, by the local if being all satisfied
Output signal of the 1PPS signal as time service mode, otherwise using the GPS1PPS signal as the output signal of time service mode.
Optionally, as another embodiment of the invention, a kind of satellite time transfer device, including memory, processor with
And the computer program that can be run in the memory and on the processor is stored, the processor executes the calculating
It realizes when machine program such as the step of the method.
Optionally, as another embodiment of the invention, a kind of computer readable storage medium is described computer-readable
Storage medium is stored with computer program, realizes when the computer program is executed by processor such as the step of the method.
The present invention is modified by the phase difference of the GPS 1PPS signal and fractional frequency signal that calculate satellite to obtain essence
Quasi- local 1PPS signal preferably reduces signal output error with the modification method of acted as reference mutual, and passes through satellite geometry essence
Factor PDOP value is spent to select time service mode or punctual mode, is determined whether according to the state of local 1PPS signal as preferred
Signal output, improve the stability of time service.
It is apparent to those skilled in the art that for convenience of description and succinctly, the dress of foregoing description
The specific work process with unit is set, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of unit, only
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.
Unit may or may not be physically separated as illustrated by the separation member, shown as a unit
Component may or may not be physical unit, it can and it is in one place, or may be distributed over multiple networks
On unit.It can select some or all of unit therein according to the actual needs to realize the mesh of the embodiment of the present invention
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, is also possible to two or more units and is integrated in one unit.It is above-mentioned integrated
Unit both can take the form of hardware realization, can also realize in the form of software functional units.
It, can if integrated unit is realized in the form of SFU software functional unit and when sold or used as an independent product
To be stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention substantially or
Say that all or part of the part that contributes to existing technology or the technical solution can embody in the form of software products
Out, which is stored in a storage medium, including some instructions are used so that a computer equipment
(can be personal computer, server or the network equipment etc.) executes all or part of each embodiment method of the present invention
Step.And storage medium above-mentioned include: USB flash disk, it is mobile hard disk, read-only memory (ROM, Read-Only Memory), random
Access various Jie that can store program code such as memory (RAM, Random Access Memory), magnetic or disk
Matter.
More than, only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or substitutions,
These modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be wanted with right
Subject to the protection scope asked.
Claims (10)
1. a kind of satellite timing method, which comprises the steps of:
Satellite-signal is received, GPS 1PPS signal and navigation positioning data information are obtained by the satellite-signal；
By rubidium atomic clock output frequency signal, the frequency signal is subjected to scaling down processing, frequency dividing 1PPS signal is obtained, calculates
The phase difference of the GPS 1PPS signal and frequency dividing 1PPS signal, the frequency dividing 1PPS signal according to the adjusting offset are corresponding
Phase, local 1PPS signal is obtained according to the frequency dividing 1PPS signal of adjusted phase；
Satellite geometry dilution of precision PDOP value is determined according to the navigation positioning data information, and according to the satellite geometry precision
Factor PDOP value selects time service mode or punctual mode；
When selecting punctual mode, using the local 1PPS signal as the output signal for the mode of keeping time,
When selecting time service mode, judge whether the state of the local 1PPS signal is normal, by the local if normal
Output signal of the 1PPS signal as time service mode, otherwise using the GPS 1PPS signal as the output signal of time service mode.
2. a kind of satellite timing method according to claim 1, which is characterized in that when selection time service mode or punctual mode
When, it further comprises the steps of:
Original observed data is obtained by the satellite-signal, the original observed data is resolved, obtains clock deviation amendment
Value；
According to the clock deviation correction value correct local clock, by the local clock after correction be synchronized to seleced time service mode or
The UTC clock of punctual mode.
3. a kind of satellite timing method according to claim 2, which is characterized in that it is described to the original observed data into
Row resolves, and obtains clock deviation correction value and specifically includes:
The original observed data is resolved according to weighted least-squares method algorithm to obtain receiver location and receiver clock
Difference；
The receiver location and receiver clock-offsets are calculated according to Higher Difference Method algorithm between epoch, obtain clock deviation amendment
Value.
4. a kind of satellite timing method according to claim 1, which is characterized in that described to pass through rubidium atomic clock output frequency
The frequency signal is divided and obtains frequency dividing 1PPS signal by signal, comprising:
The rubidium atomic clock output signal is 10M frequency signal, carries out process of frequency multiplication to the 10M frequency signal, obtains frequency multiplication
Signal；
The frequency-doubled signal is subjected to scaling down processing, obtains frequency dividing 1PPS signal.
5. a kind of satellite timing method according to claim 1, which is characterized in that the calculating GPS 1PPS signal and point
The phase difference of frequency 1PPS signal, including phase bigness scale step and phase carefully survey step:
The phase bigness scale step are as follows: GPS 1PPS signal is respectively obtained according to pulse counting method and divides the phase of 1PPS signal
Position calculates the difference of the rising edge phase of GPS 1PPS signal and the rising edge phase of frequency dividing 1PPS signal, obtains first phase difference；
The phase carefully surveys step are as follows: measures chip measurement by the TDC-GP22 time and is less than signal period second corresponding GPS
The phase of 1PPS signal and frequency dividing 1PPS signal, and calculate the rising for being less than signal period second corresponding GPS 1PPS signal
Along the difference of phase and the rising edge phase of frequency dividing 1PPS signal, it is poor to obtain second phase；
It sums to the first phase difference and second phase difference, obtain the GPS 1PPS signal and divides the phase of 1PPS signal
Difference.
6. a kind of satellite timing method according to any one of claims 1 to 5, which is characterized in that judge the local
Whether the state of 1PPS signal is normal, comprising:
Judge whether the local 1PPS signal and the phase difference of GPS 1PPS signal are less than predetermined deviation value, and the phase difference
Whether the duration less than the state of predetermined deviation value is greater than preset time, by the local 1PPS signal if being all satisfied
As the output signal of time service mode, otherwise using the GPS 1PPS signal as the output signal of time service mode.
7. a kind of satellite time transfer device characterized by comprising
Satellite-signal processing module obtains GPS1PPS signal by the satellite-signal and navigation is fixed for receiving satellite-signal
Position data information；
Processing module, for the frequency signal being carried out scaling down processing, is divided by rubidium atomic clock output frequency signal
1PPS signal calculates the GPS 1PPS signal and divides the phase difference of 1PPS signal, divides according to the adjusting offset
The corresponding phase of frequency 1PPS signal obtains local 1PPS signal according to the frequency dividing 1PPS signal of adjusted phase；
Mode selection module, for determining satellite geometry dilution of precision PDOP value, and root according to the navigation positioning data information
Time service mode or punctual mode are selected according to the satellite geometry dilution of precision PDOP value；
The processing module is also used to when selecting punctual mode, using the local 1PPS signal as the output of punctual mode
Signal,
When selecting time service mode, judge whether the state of the local 1PPS signal is normal, by the local if normal
Output signal of the 1PPS signal as time service mode, otherwise using the GPS 1PPS signal as the output signal of time service mode.
8. a kind of satellite time transfer device according to claim 7, which is characterized in that the satellite-signal processing module, also
For obtaining original observed data by the satellite-signal, the original observed data is resolved, clock deviation amendment is obtained
Value；
The processing module is also used to correct local clock according to the clock deviation correction value, and the local clock after correction is synchronous
To the UTC clock of seleced time service mode or punctual mode.
9. a kind of satellite time transfer device, including memory, processor and storage are in the memory and can be in the processing
The computer program run on device, which is characterized in that the processor realizes such as claim 1 when executing the computer program
The step of to any one of 6 the method.
10. a kind of computer readable storage medium, the computer-readable recording medium storage has computer program, and feature exists
In when the computer program is executed by processor the step of any one of such as claim 1 to 6 of realization the method.
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| CN109634092A (en) * | 2019-01-16 | 2019-04-16 | 和芯星通科技(北京)有限公司 | A kind of time service method and GNSS receiver based on GNSS receiver |
| CN111313896A (en) * | 2020-03-30 | 2020-06-19 | 中国电子科技集团公司第五十四研究所 | High-precision time-frequency synchronization and generation method in short-wave time service mode |
| CN114019782A (en) * | 2022-01-06 | 2022-02-08 | 智道网联科技(北京)有限公司 | Method and device for taming navigation satellite clock of automatic driving domain controller |
| CN114690614A (en) * | 2022-04-13 | 2022-07-01 | 四川阿秒科技有限公司 | Autonomous time keeping system and method based on time delay control |
| CN114994727A (en) * | 2022-07-18 | 2022-09-02 | 成都迅翼卫通科技有限公司 | Equipment for realizing high-precision time calibration and satellite positioning |
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| CN114019782A (en) * | 2022-01-06 | 2022-02-08 | 智道网联科技(北京)有限公司 | Method and device for taming navigation satellite clock of automatic driving domain controller |
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| CN114690614B (en) * | 2022-04-13 | 2024-03-29 | 四川阿秒科技有限公司 | Autonomous time keeping system and method based on time delay control |
| CN115047749A (en) * | 2022-05-13 | 2022-09-13 | 南京尤尼泰信息科技有限公司 | Time keeping device and method based on satellite navigation signals |
| CN115047749B (en) * | 2022-05-13 | 2023-07-21 | 南京尤尼泰信息科技有限公司 | Satellite navigation signal-based time keeping device and method |
| CN114994727A (en) * | 2022-07-18 | 2022-09-02 | 成都迅翼卫通科技有限公司 | Equipment for realizing high-precision time calibration and satellite positioning |
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