CN105578587B - A kind of temporal frequency comparison method and equipment - Google Patents
A kind of temporal frequency comparison method and equipment Download PDFInfo
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- CN105578587B CN105578587B CN201510955487.3A CN201510955487A CN105578587B CN 105578587 B CN105578587 B CN 105578587B CN 201510955487 A CN201510955487 A CN 201510955487A CN 105578587 B CN105578587 B CN 105578587B
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- base station
- time
- time difference
- station equipment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/0035—Synchronisation arrangements detecting errors in frequency or phase
-
- 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
Abstract
The present invention provides a kind of temporal frequency comparison method and equipment, it include: to obtain the second pulse signal of first base station equipment and with reference to second pulse signal, and calculate the second pulse signal of the first base station equipment and described poor with reference to the first time between second pulse signal；Based on Beidou satellite navigation system, second time difference with reference between second pulse signal and the system time of the Beidou satellite navigation system is calculated；According to the first time is poor and second time difference, determine the time difference between the first base station equipment and the system time of the Beidou satellite navigation system, wherein, the time difference is used to determine the relative deviation of the frequency between the first base station equipment and other base station equipments.Determine that the first time between first base station equipment and the system time of Beidou satellite navigation system is poor, may be implemented the relative deviation for obtaining the frequency between first base station equipment and other base station equipments in real time based on Beidou satellite navigation system.
Description
Technical field
The present invention relates to computer technology and Beidou satellite navigation field more particularly to a kind of temporal frequency comparison method and
Equipment.
Background technique
The long-range comparing of temporal frequency is an important research direction of time-frequency metering field, between different base station when
Between the key step that is compared of frequency are as follows: firstly, each base station and satellite system is calculated depending on method or altogether depending on method using complete
Time difference between system；Secondly, difference is calculated according to the time difference between the different base station and satellite system being calculated
Time difference between base station；Finally, the frequency between different base station is calculated according to the time difference between the different base station of accumulation
The relative deviation of rate.
Currently, the temporal frequency laboratory of each country generallys use single channel GPS (full name in English: Global
Positioning System, Chinese: global positioning system) Time Transmission equipment and multichannel GNSS (full name in English:
Global Navigation Satellite System, Chinese: Global Navigation Satellite System) progress of Time Transmission equipment
The comparison of temporal frequency.When carrying out the comparison of temporal frequency using GPS device, each country is sent out according to International Bureau of Wieghts and Measurements (BIPM)
The GPS common-view time table of cloth is configured GPS device, to observe corresponding GPS satellite in the defined period, obtains not
With the relative deviation of time difference and frequency between base station, can achieve using the precision that GPS device carries out temporal frequency comparison
More than ten nanoseconds；When carrying out the comparison of temporal frequency using GNSS device, it can track simultaneously and receive GPS and GLONASS (English
Full name: Global Navigation Satellite System, Chinese: Global Satellite Navigation System) view satellite,
And make full use of all Satellite Observations of base station that the time difference between base station and satellite system and frequency is calculated
Relative deviation can achieve within ten nanoseconds using the precision that GNSS device carries out temporal frequency comparison.
In general, needing to follow BIPM temporal frequency when carrying out temporal frequency comparison using GPS device or GNSS device
The observation data obtained daily, are generated the data file of a CGGTTS format by the standard that Advisory Board formulates, and will be given birth to
At data file be sent to other base stations, other base stations obtain data file after, to data file carry out data processing, according to
The result of data processing obtains the time difference between different base station, and then obtains the relative deviation of the frequency between different base station.
In this way, observation data could be sent to after due to needing daily observation data generating a data file
Other base stations cause other base stations that can not obtain observation data in real time, that is to say, that different base station obtain with other base stations it
Between time relative deviation have time delay.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of temporal frequency comparison method and equipment, it is existing for solving
The relative deviation for the time between different base station that temporal frequency comparison method obtains has the problem of time delay.
The present invention provides a kind of temporal frequency comparison methods, comprising:
It obtains the second pulse signal of first base station equipment and refers to second pulse signal, and calculate the first base station equipment
Second pulse signal and described poor with reference to the first time between second pulse signal；
Based on Beidou satellite navigation system, the reference second pulse signal and the Beidou satellite navigation system is calculated
System time between the second time difference；
According to the first time is poor and second time difference, determine that the first base station equipment is defended with the Beidou
Time difference between the system time of star navigation system, wherein the time difference is for determining the first base station equipment and its
The relative deviation of frequency between his base station equipment.
The present invention provides a kind of temporal frequencies to compare equipment, comprising:
Measuring unit for obtaining the second pulse signal of first base station equipment and with reference to second pulse signal, and determines institute
State the second pulse signal of first base station equipment and described poor with reference to the first time between second pulse signal；
The reference second pulse signal and the north is calculated for being based on Beidou satellite navigation system in computing unit
The second time difference between the system time for the satellite navigation system that struggles against；
Processing unit, for determining that the first base station is set according to the first time is poor and second time difference
The standby time difference between the system time of the Beidou satellite navigation system, wherein the time difference is for determining described the
The relative deviation of frequency between one base station equipment and other base station equipments.
The present invention has the beneficial effect that:
Scheme provided by the invention obtains the second pulse signal of first base station equipment and refers to second pulse signal, and counts
Calculate the second pulse signal of the first base station equipment and described poor with reference to the first time between second pulse signal；It is defended based on Beidou
With reference between second pulse signal and the system time of the Beidou satellite navigation system is calculated in star navigation system
Two time differences；According to the first time is poor and second time difference, the first base station equipment and the Beidou are determined
Time difference between the system time of satellite navigation system, wherein the time difference for determine the first base station equipment with
The relative deviation of frequency between other base station equipments.First base station equipment and north are determined in real time based on Beidou satellite navigation system
Time difference between the system time for the satellite navigation system that struggles against, may be implemented to obtain first base station equipment and other base station equipments it
Between temporal frequency relative deviation, effectively solve between the different base station equipment that existing temporal frequency comparison method obtains
The relative deviation of time has the problem of time delay.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without any creative labor, it can also be obtained according to these attached drawings
His attached drawing.
Fig. 1 is a kind of temporal frequency comparison method flow diagram provided in an embodiment of the present invention；
Fig. 2 is that a kind of temporal frequency provided in an embodiment of the present invention compares device structure schematic diagram；
Fig. 3 is that a kind of long-range real-time time frequency based on Beidou satellite navigation system provided in an embodiment of the present invention compares
System schematic.
Specific embodiment
In order to achieve the object of the present invention, a kind of temporal frequency comparison method and equipment are provided in the embodiment of the present invention,
It obtains the second pulse signal of first base station equipment and refers to second pulse signal, and calculate the pulse per second (PPS) of the first base station equipment
Signal and described poor with reference to the first time between second pulse signal；Based on Beidou satellite navigation system, the ginseng is calculated
Examine the second time difference between second pulse signal and the system time of the Beidou satellite navigation system；According to the first time
It poor and described second time difference, determines between the first base station equipment and the system time of the Beidou satellite navigation system
Time difference, wherein the time difference is used to determine the phase of frequency between the first base station equipment and other base station equipments
To deviation.Determined in real time based on Beidou satellite navigation system first base station equipment and Beidou satellite navigation system system time it
Between first time it is poor, the relative deviation for obtaining the frequency between first base station equipment and other base station equipments may be implemented, have
The relative deviation that effect solves the time between the different base station equipment that existing temporal frequency comparison method obtains has time delay
The problem of.
Below in conjunction with Figure of description, the present invention is described in further detail, it is clear that described embodiment is only
It is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 is a kind of temporal frequency comparison method flow diagram provided in an embodiment of the present invention, the following institute of the method
It states.
Step 101: obtaining the second pulse signal of first base station equipment and refer to second pulse signal, and calculate described first
The second pulse signal of base station equipment and described poor with reference to the first time between second pulse signal.
In a step 101, second pulse signal based on first base station equipment with refer to second pulse signal, it is available described
First time between first base station equipment and second pulse signal is poor.
Specifically, the second pulse signal of the first base station equipment can be determined by the atomic clock of the first base station equipment
It obtains, the second pulse signal of the first base station equipment can be used to indicate what the system time of the first base station equipment determined
One second time, the one second time that the second pulse signal indicates can be true according to the actual situation by the first base station equipment
It is fixed, it is not specifically limited here.
It should be noted that embodiment provided by the invention is determined between different base station based on Beidou satellite navigation system
Therefore time difference is designed with the Beidou signal receiver for receiving Beidou satellite navigation system signal in each base station, in this hair
It is described to be obtained by the Beidou signal receiver with reference to second pulse signal in the embodiment of bright offer, and described in expression
The one second time that Beidou signal receiver determines, wherein the one second time indicated with reference to second pulse signal can be with
It is determined by the Beidou signal receiver, is not specifically limited here.
When first time between the second pulse signal for calculating the first base station equipment and reference second pulse signal is poor,
Firstly, determine for calculating the first time poor reference frequency, secondly, being calculated described the based on the reference frequency
The second pulse signal of one base station equipment and poor with reference to the first time between second pulse signal, wherein the reference frequency can be with
It being obtained by the first base station equipment according to the atomic clock of the first base station equipment, the reference frequency can be 10MHz,
It can be not specifically limited with 5MHz.
Step 102: being based on Beidou satellite navigation system, the reference second pulse signal and the big-dipper satellite is calculated
The second time difference between the system time of navigation system.
In a step 102, Beidou satellite navigation system, the available reference second pulse signal and the Beidou are based on
The second time difference between the system time of satellite navigation system.
It is described to be led according to internal for receiving big-dipper satellite by the first base station equipment with reference to second pulse signal
The Beidou signal receiver of boat system signal obtains, and the Beidou satellite navigation system includes that at least one is defended depending on Beidou
Star, the Beidou satellite navigation system correspondence system time, each is at view big-dipper satellite corresponding one in view big-dipper satellite star
Clock, the Beidou signal receiver are described to refer to second pulse signal when receiving the signal of the Beidou satellite navigation system
There are the time differences between the system time of the Beidou satellite navigation system.
Specifically, it can determine in the following manner described with reference to second pulse signal and the Beidou satellite navigation system
The second time difference between system time:
Step 1: the Beidou satellite navigation system received according to set algorithm to the Beidou signal receiver
Signal handled, and according to processing result be calculated by the Beidou signal receiver determine it is described refer to second arteries and veins
Rush time difference of at least one for including in signal and the Beidou Navigation System between view big-dipper satellite star clock.
Here set algorithm is determined by the first base station equipment, is not specifically limited.
Embodiment provided by the invention, by calculate it is described with reference to second pulse signal and at least one view big-dipper satellite star
The precision for the time difference being calculated can be improved in time difference between clock, here to described in view big-dipper satellite star clock
Number be not specifically limited.
Step 2: at least one is when regarding the system of big-dipper satellite star clock and the Beidou satellite navigation system described in calculating
Between between time difference.
At least one is defended depending on Beidou described in being calculated by way of extracting the clock deviation parameter in Beidou ephemeris
Time difference between star clock and the system time of the Beidou satellite navigation system can also be calculated by other means
It is described at least one view big-dipper satellite star clock and the system time of the Beidou satellite navigation system between time difference, do not do
It is specific to limit.
Step 3: according to it is described with reference to second pulse signal and at least one view big-dipper satellite star clock between time difference with
And it is described at least one view big-dipper satellite star clock and the system time of the Beidou satellite navigation system between time difference, really
Fixed second time difference with reference between second pulse signal and the system time of the Beidou satellite navigation system.
That is, the reference second arteries and veins can be calculated depending on big-dipper satellite star clock at least one indirectly described in
Rush the second time difference between signal and the system time of the Beidou satellite navigation system.
It should be noted that the Beidou signal receiver and the Beidou can also be obtained according to other modes determination
It the second time difference between the system time of satellite navigation system, is not specifically limited here.
Step 103: according to the first time is poor and second time difference, determining the first base station equipment and institute
State the time difference between the system time of Beidou satellite navigation system.
Wherein, the time difference is used to determine the opposite of the frequency between the first base station equipment and other base station equipments
Deviation.
In step 103, between the second pulse signal and the reference second pulse signal based on the first base station equipment
First time is poor and time difference with reference between second pulse signal and the system time of Beidou satellite navigation system, can
To obtain the time difference between the first base station equipment and the system time of the Beidou satellite navigation system.
It should be noted that between the first base station equipment and the system time of the Beidou satellite navigation system when
Between difference refer between the second pulse signal of the first base station equipment and the system time of the Beidou satellite navigation system
Time difference.
Specifically, by the first time it is poor sum with second time difference, and will obtain and value as institute
State the time difference between first base station equipment and the system time of the Beidou satellite navigation system.
That is, in embodiment provided by the invention, described the is obtained indirectly with reference to second pulse signal by described
Time difference between one base station equipment and the system time of the Beidou satellite navigation system.
Obtaining the time between the first base station equipment and the system time of the Beidou satellite navigation system
After difference, the method also includes:
The first base station equipment receives other bases described in current time determination that other described base station equipments are sent
The time difference stood between the system time of the Beidou satellite navigation system；
According to the time difference received and the first base station equipment of determination and the Beidou satellite navigation system
System time between time difference, calculate the opposite of the frequency between the first base station equipment and other described base station equipments
Deviation.
Wherein it is possible to be by the determination first base station equipment of above-mentioned record and the Beidou satellite navigation system
The method of time difference between the system time, which determines, obtains the system time of described other base stations and the Beidou satellite navigation system
Between time difference, description is not repeated herein.
Other described base station equipments obtain between the system time of the bucket satellite navigation system at the current time
Time difference, and the time difference is sent to the first base station equipment, first base station equipment receives other described base stations and sets
The time difference that preparation is sent, and the time between the system time of the bucket satellite navigation system is obtained at the current time
Difference, first base station equipment can be defended according to the time difference received and the first base station equipment determined with the Beidou
Time difference between the system time of star navigation system calculates between the first base station equipment and other described base station equipments
The relative deviation of frequency.
In this way, the first base station equipment other base stations according to being received at current time send time difference with
And between the first base station equipment and the system time of the Beidou satellite navigation system that the current time determines
The phase of frequency of the first base station equipment between the current time and other described base station equipments is calculated in time difference
To deviation, the relative deviation tool of the time between the different base station that existing temporal frequency comparison method obtains can be effectively solved
There is the problem of time delay.
Receive the first base station equipment that time difference that other described base stations are sent and determining obtains with it is described
Time difference between the system time of Beidou satellite navigation system, can determine in the following manner the first base station with it is described
The relative deviation of frequency between other base stations:
Step 1: being led with the first base station equipment determined with the big-dipper satellite according to the time difference received
Time difference between the system time of boat system determines the first base station equipment at the current time and other described base stations
Time difference between equipment.
Specifically, by the time difference received and the first base station equipment determined and the Beidou satellite navigation
It is poor that time difference between the system time of system is made, and using obtained difference as the first base station equipment when described current
Between time difference between other described base station equipments.
Step 2: according to the determining first base station equipment between the current time and other described base station equipments
Time difference, the relative deviation of the frequency between the first base station equipment and other described base station equipments is calculated.
It should be noted that be relationship reciprocal each other between Time And Frequency, according to the first base station equipment with
Time difference between other described base station equipments determines the relatively inclined of the frequency between the first base station and other described base stations
When poor, the first base station equipment and other described base stations for needing to obtain the subsequent time at current time and current time are set
Time difference between standby, and according between the first base station equipment and other described base station equipments that different moments obtain
The relative deviation of the frequency between the first base station and second base station is calculated in time difference.
It should be noted that in embodiment provided by the invention, it is available described the first of multiple and different moment
Time difference between base station equipment and other described base station equipments, and be calculated according to the time difference of the multiple different moments
The relative deviation of frequency between the first base station and other described base stations, multiple and different moment here refer at least three
A different moments are not specifically limited the specific number of different moments.
Scheme provided by the invention obtains the second pulse signal of first base station equipment and refers to second pulse signal, and counts
Calculate the second pulse signal of the first base station equipment and described poor with reference to the first time between second pulse signal；It is defended based on Beidou
With reference between second pulse signal and the system time of the Beidou satellite navigation system is calculated in star navigation system
Two time differences；According to the first time is poor and second time difference, the first base station equipment and the Beidou are determined
Time difference between the system time of satellite navigation system, wherein the time difference for determine the first base station equipment with
The relative deviation of frequency between other base station equipments.
Determine the system time of first base station equipment and Beidou satellite navigation system in real time based on Beidou satellite navigation system
Between time difference, the relative deviation for obtaining the temporal frequency between first base station equipment and other base station equipments may be implemented,
The relative deviation for effectively solving the time between the different base station equipment that existing temporal frequency comparison method obtains has delay
The problem of property.
Fig. 2 is that a kind of temporal frequency provided in an embodiment of the present invention compares device structure schematic diagram.The equipment includes: to survey
Measure unit 21, computing unit 22, processing unit 23 and receiving unit 24, in which:
Measuring unit 21 for obtaining the second pulse signal of first base station equipment and with reference to second pulse signal, and determines
The second pulse signal of the first base station equipment and described poor with reference to the first time between second pulse signal；
Computing unit 22, for be based on Beidou satellite navigation system, be calculated it is described with reference to second pulse signal with it is described
The second time difference between the system time of Beidou satellite navigation system；
Processing unit 23, for determining the first base station according to the first time is poor and second time difference
Time difference between equipment and the system time of the Beidou satellite navigation system, wherein the time difference is for described in determination
The relative deviation of frequency between first base station equipment and other base station equipments.
The processing unit 23 determines that the first base station is set according to the first time is poor and second time difference
The standby time difference between the system time of the Beidou satellite navigation system, comprising:
By the first time it is poor sum with second time difference, and will obtain and value as first base
Time difference between station equipment and the system time of the Beidou satellite navigation system.
Optionally, the equipment further includes receiving unit 24, in which:
The receiving unit 24, for receive that other described base station equipments send determined at current time described in other
Time difference between base station and the system time of the Beidou satellite navigation system；
The processing unit 23, time difference for being also used to be received according to the receiving unit 23 and described in determining
Time difference between first base station equipment and the system time of the Beidou satellite navigation system calculates the first base station equipment
The relative deviation of frequency between other described base station equipments.
Specifically, the processing unit 23 is received according to the receiving unit 24 time difference and described in determining
Time difference between first base station equipment and the system time of the Beidou satellite navigation system calculates the first base station equipment
The relative deviation of frequency between other described base station equipments, comprising:
According to the time difference received and the first base station equipment of determination and the Beidou satellite navigation system
System time between time difference, determine the first base station equipment the current time and other described base station equipments it
Between time difference；
According to time of the determining first base station equipment between the current time and other described base station equipments
The relative deviation of the frequency between the first base station equipment and other described base station equipments is calculated in difference.
The processing unit 23 is according to the time difference received and the first base station equipment of determination and the north
Struggle against satellite navigation system system time between time difference, determine the first base station equipment the current time with it is described
Time difference between other base station equipments, comprising:
By the time difference received and the first base station equipment determined and the Beidou satellite navigation system
It is poor that time difference between system time is made, and using obtained difference as the first base station equipment in the current time and institute
State the time difference between other base station equipments.
It should be noted that temporal frequency provided in an embodiment of the present invention compares equipment can be realized by hardware mode,
It can also be realized by software mode, here without limitation.
Fig. 3 is that a kind of long-range real-time time frequency based on Beidou satellite navigation system provided in an embodiment of the present invention compares
System schematic, the system comprises: measurement type double frequency Beidou signal receiving module 31, control module 32, time intervals to survey
Measure module 33, frequency distributes amplification module 34, Beidou RNSS (full name in English: Radio Navigation Satellite
System, Chinese: radio navigation satellite system) choke coil antenna 35 and Beidou RDSS (full name in English: Radio
Determination Satellite Service, Chinese: radiodetermination-satellite service) communication module 36.
It is as shown in Figure 3 to illustrate for determining the relative deviation of the frequency between first base station equipment and the second base station equipment
Modules working principle.
Step 1: system initialization.
Measurement type double frequency Beidou signal receiving module 31 by the Frequency Locking of its internal crystal oscillator to external reference frequency, and with
This refers to second pulse signal for time reference output, and the first base station equipment is produced based on the atomic clock of the first base station equipment
The second pulse signal of the raw first base station equipment, the frequency distribute amplification module 34 according to the original of the first base station equipment
Secondary clock determines reference frequency signal, and the reference frequency signal is input to the measurement type double frequency Beidou signal receiving module
31 and the time interval measurement module 33, the Beidou RNSS choke coil antenna 35 is input to the measurement for coordinate is surveyed and drawn
Type double frequency Beidou signal receiving module 31.
It should be noted that being the relationship of coherent between the reference burst signal and the reference frequency signal, in work
Phase during work does not change, and the measurement type double frequency Beidou signal receiving module 31 is received according to the mapping coordinate
The signal of Beidou satellite navigation system, it is possible to reduce noise jamming.
Step 2: calculate the first base station equipment second pulse signal and first with reference between second pulse signal
Time difference.
The time interval measurement module 33 receives the described of the generation of measurement type double frequency Beidou signal receiving module 31
With reference to second pulse signal and the second pulse signal of the first base station equipment, and it is true based on frequency distribution amplification module 34
The fixed reference frequency signal, measurement obtain the second pulse signal with reference to second pulse signal and the first base station equipment
Between first time difference data, and the first time difference data is input to the control module 32.
Step 3: calculating the with reference between second pulse signal and the system time of the Beidou satellite navigation system
Two time differences.
The measurement type double frequency Beidou signal receiving module 31 exports the pseudorange and carrier phase observed quantity number of B1, B2 frequency point
Accordingly and big-dipper satellite almanac data is to control module 32, the control module 32 according to the measurement data received and
Big-dipper satellite almanac data be calculated the system time with reference to second pulse signal and the Beidou satellite navigation system it
Between the second time difference.
Step 4: being calculated between the first base station equipment and the system time of the Beidou satellite navigation system
Time difference.
The control module 32 is poor according to the first time that the time interval measurement module 33 received is sent
Data and with reference between second pulse signal and the system time of the Beidou satellite navigation system being calculated
The first base station equipment and the time between the system time of the Beidou satellite navigation system was calculated in two time differences
Difference.
Step 5: completing the data exchange between the first base station equipment and second base station equipment.
The control module 32 will be between the first base station equipment and the system time of the Beidou satellite navigation system
Time difference data be sent to the Beidou RDSS communication module 36, described in the Beidou RDSS communication module 36 will receive
Time difference data is sent to second base station equipment.
It should be noted that the Beidou RDSS communication module 36 includes civilian SIM card and Beidou RDSS dual-mode antenna.
Optionally, the Beidou RDSS communication module 36 can also receive described second that second base station equipment is sent
Time difference data between base station equipment and the system time of the Beidou satellite navigation system, and the time that will be received
Difference data is sent to the control module 32.
Step 6: the frequency being calculated between the first base station equipment and second base station equipment is relatively inclined
Difference.
The control module 32 receives the time difference data that the Beidou RDSS communication module 36 is sent, and according to it is described when
Between difference data determine the time difference between second base station equipment and the system time of the Beidou satellite navigation system, according to connecing
The system time of the first base station equipment of the time difference and determination that receive and the Beidou satellite navigation system it
Between the time difference relative deviation of the frequency between the first base station equipment and second base station equipment is calculated.
It will be understood by those skilled in the art that the embodiment of the present invention can provide as method, apparatus (equipment) or computer
Program product.Therefore, in terms of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and hardware
Embodiment form.Moreover, it wherein includes the meter of computer usable program code that the present invention, which can be used in one or more,
The computer journey implemented in calculation machine usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of sequence product.
The present invention be referring to according to the method for the embodiment of the present invention, the flow chart of device (equipment) and computer program product
And/or block diagram describes.It should be understood that each process in flowchart and/or the block diagram can be realized by computer program instructions
And/or the combination of the process and/or box in box and flowchart and/or the block diagram.It can provide these computer programs to refer to
Enable the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to generate
One machine so that by the instruction that the processor of computer or other programmable data processing devices executes generate for realizing
The device for the function of being specified in one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from model of the invention by those skilled in the art
It encloses.In this way, if these modifications and changes of the present invention is within the scope of the claims of the present invention and its equivalent technology, then
The present invention is also intended to include these modifications and variations.
Claims (8)
1. a kind of temporal frequency comparison method characterized by comprising
It obtains the second pulse signal of first base station equipment and refers to second pulse signal, and determine the second of the first base station equipment
Pulse signal and described poor with reference to the first time between second pulse signal；
Based on Beidou satellite navigation system, it is calculated and described is with reference to second pulse signal and the Beidou satellite navigation system
The second time difference between the system time；
According to the first time is poor and second time difference, determine that the first base station equipment is led with the big-dipper satellite
Time difference between the system time of boat system, wherein the time difference is for determining the first base station equipment and other bases
The relative deviation of frequency between station equipment；The method also includes:
Other base stations described in what the first base station equipment received that other described base station equipments send determine at current time with
Time difference between the system time of the Beidou satellite navigation system；
What it is according to the time difference received and the first base station equipment and the Beidou satellite navigation system that determine is
Time difference between the system time calculates the relatively inclined of the frequency between the first base station equipment and other described base station equipments
Difference.
2. comparison method as described in claim 1, which is characterized in that according to the first time is poor and second time
Difference determines the time difference between the first base station equipment and the system time of the Beidou satellite navigation system, comprising:
By the first time it is poor sum with second time difference, and will obtain and value set as the first base station
The standby time difference between the system time of the Beidou satellite navigation system.
3. comparison method as described in claim 1, which is characterized in that described according to the time difference received and determining
Time difference between first base station equipment and the Beidou satellite navigation system, calculate the first base station equipment and it is described other
The relative deviation of frequency between base station equipment, comprising:
According between the time difference received and the first base station equipment and the Beidou satellite navigation system of determination
Time difference, determine time difference of the first base station equipment between the current time and other described base station equipments；
According to time difference of the determining first base station equipment between the current time and other described base station equipments, meter
It calculates and obtains the relative deviation of the frequency between the first base station equipment and other described base station equipments.
4. comparison method as claimed in claim 3, which is characterized in that described according to the time difference received and determining
Time difference between first base station equipment and the Beidou satellite navigation system determines the first base station equipment described current
Time difference between moment and other described base station equipments, comprising:
It will be between the time difference that received and the first base station equipment and the Beidou satellite navigation system of determination
It is poor that time difference is made, and using obtained difference as the first base station equipment at the current time and other described base station equipments
Between time difference.
5. a kind of temporal frequency compares equipment characterized by comprising
Measuring unit for obtaining the second pulse signal of first base station equipment and with reference to second pulse signal, and determines described the
The second pulse signal of one base station equipment and described poor with reference to the first time between second pulse signal；
Computing unit is calculated the second pulse signal that refers to and defends with the Beidou for being based on Beidou satellite navigation system
The second time difference between the system time of star navigation system；
Processing unit, for according to the first time is poor and second time difference, determine the first base station equipment with
Time difference between the system time of the Beidou satellite navigation system, wherein the time difference is for determining first base
The relative deviation of frequency between station equipment and other base station equipments；
The equipment further includes receiving unit, in which:
The receiving unit, for receive that other described base station equipments send determined at current time described in other base stations with
Time difference between the system time of the Beidou satellite navigation system；
The processing unit is also used to according to the time difference received and the first base station equipment of determination and the north
Time difference between the system time for the satellite navigation system that struggles against, calculate the first base station equipment and other described base station equipments it
Between frequency relative deviation.
6. as claimed in claim 5 compare equipment, which is characterized in that the processing unit according to the first time it is poor and
Second time difference determines the time between the first base station equipment and the system time of the Beidou satellite navigation system
Difference, comprising:
By the first time it is poor sum with second time difference, and will obtain and value set as the first base station
The standby time difference between the system time of the Beidou satellite navigation system.
7. comparing equipment as claimed in claim 5, which is characterized in that the processing unit is according to the time difference received
With the time difference between the determining first base station equipment and the system time of the Beidou satellite navigation system, described in calculating
The relative deviation of frequency between first base station equipment and other described base station equipments, comprising:
The time difference and the first base station equipment determined that are received according to the receiving unit and the big-dipper satellite
Time difference between the system time of navigation system determines the first base station equipment at the current time and other described bases
Time difference between station equipment；
According to time difference of the determining first base station equipment between the current time and other described base station equipments, meter
It calculates and obtains the relative deviation of the frequency between the first base station equipment and other described base station equipments.
8. comparing equipment as claimed in claim 7, which is characterized in that the processing unit is received according to the receiving unit
The time difference and determination the first base station equipment and the system time of the Beidou satellite navigation system between when
Between it is poor, determine time difference of the first base station equipment between the current time and other described base station equipments, comprising:
By the system of the time difference received and the first base station equipment and the Beidou satellite navigation system that determine
It is poor that time difference between time is made, and using obtained difference as the first base station equipment the current time with it is described its
Time difference between his base station equipment.
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| CN107884220A (en) * | 2017-12-27 | 2018-04-06 | 中国电子科技集团公司第五十四研究所 | A kind of RNSS payload test device |
| CN112653499B (en) * | 2019-10-11 | 2022-02-01 | 大唐移动通信设备有限公司 | Network access method and device of terminal, electronic equipment and storage medium |
| CN111650611B (en) * | 2020-05-06 | 2022-08-19 | 中国科学院国家授时中心 | Common-view time planning method suitable for remote comparison of different types of frequency sources |
| CN112543078B (en) * | 2020-11-24 | 2023-10-27 | 北京卓越航导科技有限责任公司 | Network time server calibration method and device based on satellite common view |
| CN113703013B (en) * | 2021-05-18 | 2022-06-07 | 中国电信股份有限公司 | Signal processing method, device, system and computer readable storage medium |
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| CN104181550A (en) * | 2014-08-19 | 2014-12-03 | 北京无线电计量测试研究所 | Common view time and frequency transmitting method based on BeiDou navigation satellite system |
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