CN105388512A - Calibration method and device of seismic data acquisition and exploration time - Google Patents

Abstract

The present application provides a calibration method and a device of a seismic data acquisition and exploration time. The method comprises a step of obtaining the first current time of a satellite timing system as a local clock first time and initializing a local oscillator counting value, a step of judging whether a satellite signal is valid or not when a preset calibration time arrives, a step of carrying out local oscillator counting if the satellite signal is invalid and carrying out acquisition time marking on seismic data by using the counting value, a step of obtaining a timing system second current time when the preset calibration time and the satellite signal are valid, recording a local oscillator current counting value, and determining the current local oscillator time of the current counting value, a step of obtaining a single time counting error time according to the first current time, the first time, the second current time, the current local oscillator time and the current counting value, and a step of carrying out time calibration on the local oscillator time of seismic data to be calibrated by using the single time counting error time. By using the technical scheme provided by the embodiment of the invention, the time of seismic data acquisition and exploration can be accurately determined.

Description

The calibration steps of a kind of earthquake data acquisition exploration time and device

Technical field

The present invention relates to technical field of geophysical exploration, particularly relate to calibration steps and the device of a kind of earthquake data acquisition exploration time.

Background technology

In seismic exploration, require must keep strict time consistency in epicenter excitation moment and data acquisition moment, General Requirements error must not more than a sampling interval.In recent years, Service of Timing by Satellite is progressively dissolved in earthquake data acquisition exploration process, and satellite time service system can provide reference time for earthquake data acquisition equipment.

The earthquake data acquisition equipment in prior art with satellite time transfer function mostly adopts the standard time information from satellite local clock to be carried out to the working method of directly calibrating, and reaches the object of synchronous earthquake data acquisition exploration time.But ground observation construction environment is complicated, there will be the phenomenon that cannot receive satellite-signal or satellite-signal instability at some construction area.This will cause earthquake data acquisition equipment cannot carry out the calibration of local clock in time, whether accurately local crystal oscillator precision will be depended on completely to the standard time of earthquake data markers, high-precision local crystal oscillator cost is high, and after cannot receiving the standard time information from satellite time service system for a long time, earthquake-capturing equipment cannot normally work.

Therefore, need the calibration steps of a kind of earthquake data acquisition exploration time in prior art badly, the problem that earthquake data acquisition equipment is high to satellite-signal dependence can be solved at low cost.

Summary of the invention

The object of the application is the calibration steps and the device that provide a kind of earthquake data acquisition exploration time, can determine the time that earthquake data acquisition is explored accurately.

Calibration steps and the device of the earthquake data acquisition exploration time that the application provides are achieved in that

The calibration steps of earthquake data acquisition exploration time, described method comprises:

Obtain the first current time of satellite time service system, using the very first time of described first current time as local clock, the count value of the local crystal oscillator of initialization;

When arriving the default alignment time, judge that whether satellite-signal is effective;

When the result of described judgement be satellite-signal invalid time, described local crystal oscillator counts, and utilizes the count value of described local crystal oscillator to carry out acquisition time mark to geological data;

When arriving the described default alignment time and described satellite-signal is effective, obtaining the second current time of described time dissemination system, recording the current count value of described local crystal oscillator, determining the current local crystal oscillator time that described current count value is corresponding;

The single counting error time is calculated according to described first current time, the described very first time, described second current time, described current local crystal oscillator time and described current count value;

Determine the local crystal oscillator time of geological data to be calibrated, utilize described single counting error time and the local crystal oscillator time of count value to described geological data to be calibrated corresponding to described geological data to be calibrated to carry out time calibration, obtain the collection exploration time after described geological data calibration to be calibrated.

In a preferred embodiment, when arriving the default alignment time, after judging that whether satellite-signal is effective, described method also comprises:

When the result of described judgement be satellite-signal effective time, obtain the current time of satellite time service system, using first current time of described current time as described satellite time service system, using the very first time of described current time as described local clock, the count value of local crystal oscillator described in initialization.

In a preferred embodiment, the described current local crystal oscillator time determining that described current count value is corresponding comprises:

The described current local crystal oscillator time is calculated according to the current count value of described local crystal oscillator, the frequency of described local crystal oscillator and the very first time of described local clock.

It is in a preferred embodiment, described that to calculate the computing formula of single counting error time according to described first current time, the described very first time, described second current time, described current local crystal oscillator time and described current count value as follows:

$t_0=\frac{(t_{s2}-t_{s1})-(t_2^{\′}-t_1)}{{\mathrm{Count}}_1}$

In above formula, t ₀represent the described single counting error time; t _s2represent described second current time; t _s1represent described first current time; T' ₂represent the described current local crystal oscillator time; t ₁represent the described very first time; Count ₁represent described current count value.

In a preferred embodiment, describedly determine that the local crystal oscillator time of geological data to be calibrated comprises:

The local crystal oscillator time of geological data to be calibrated is calculated according to count value corresponding to described geological data to be calibrated, the frequency of described local crystal oscillator and the very first time of described local clock.

In a preferred embodiment, describedly utilize described single counting error time and the local crystal oscillator time of count value to described geological data to be calibrated corresponding to described geological data to be calibrated to carry out time calibration, the computing formula obtaining the collection exploration time after described geological data calibration to be calibrated is as follows:

t＝t ₀*Count _d+t _d

In above formula, t represents the collection exploration time of described geological data to be calibrated; t ₀represent the described single counting error time; Count ₁represent the corresponding count value of described geological data to be calibrated, t _drepresent the local crystal oscillator time of described geological data to be calibrated.

The calibrating installation of earthquake data acquisition exploration time, described device comprises:

First data processing module, for obtaining the first current time of satellite time service system, using the very first time of described first current time as local clock, the count value of the local crystal oscillator of initialization;

Judge module, during for arriving the default alignment time, judges that whether satellite-signal is effective;

Second data processing module, for when the result of described judgement be satellite-signal invalid time, described local crystal oscillator counts, and utilizes the count value of described local crystal oscillator to carry out acquisition time mark to geological data;

3rd data processing module, for when arriving the described default alignment time and described satellite-signal is effective, obtain the second current time of described time dissemination system, record the current count value of described local crystal oscillator, determine the current local crystal oscillator time that described current count value is corresponding;

Computing module, for calculating the single counting error time according to described first current time, the described very first time, described second current time, described current local crystal oscillator time and described current count value;

4th data processing module, for determining the local crystal oscillator time of geological data to be calibrated, utilize described single counting error time and the local crystal oscillator time of count value to described geological data to be calibrated corresponding to described geological data to be calibrated to carry out time calibration, obtain the collection exploration time after described geological data calibration to be calibrated.

In a preferred embodiment, after judge module judges that whether satellite-signal is effective, described device also comprises:

5th data processing module, for when the result of described judgement be satellite-signal effective time, obtain the current time of satellite time service system, using first current time of described current time as described satellite time service system, using the very first time of described current time as described local clock, the count value of local crystal oscillator described in initialization.

In a preferred embodiment, described 3rd data processing module comprises:

First computing unit, calculates the described current local crystal oscillator time for the current count value according to described local crystal oscillator, the frequency of described local crystal oscillator and the very first time of described local clock.

In a preferred embodiment, the computing formula of described computing module is as follows:

$t_0=\frac{(t_{s2}-t_{s1})-(t_2^{\′}-t_1)}{{\mathrm{Count}}_1}$

In above formula, t ₀represent the described single counting error time; t _s2represent described second current time; t _s1represent described first current time; T' ₂represent the described current local crystal oscillator time; t ₁represent the described very first time; Count ₁represent described current count value.

In a preferred embodiment, described 4th data processing module comprises:

Second computing unit, for calculating the local crystal oscillator time of geological data to be calibrated according to count value corresponding to described geological data to be calibrated, the frequency of described local crystal oscillator and the very first time of described local clock.

In a preferred embodiment, the computing formula of described 4th data processing module is as follows:

t＝t ₀*Count _d+t _d

In above formula, t represents the collection exploration time of described geological data to be calibrated; t ₀represent the described single counting error time; Count ₁represent the corresponding count value of described geological data to be calibrated, t _drepresent the local crystal oscillator time of described geological data to be calibrated.

The technical scheme provided from above the embodiment of the present application, the embodiment of the present application in earthquake data acquisition equipment continuous acquisition recording process, when can satellite-signal be received, when the temporal information of satellite time service system can be used to calibrate local clock.When satellite-signal cannot be received, can, in the default alignment time, local crystal oscillator count value be used to carry out interim acquisition time mark to geological data.Then in the default alignment time and when can receive satellite-signal, while the temporal information of satellite time service system can be used to calibrate local clock, the single counting error time can be calculated according to the current and front temporal information of a satellite time service system and the local crystal oscillator count value etc. of correspondence.Finally, can utilize the described single counting error time and satellite-signal invalid time the geological data to be calibrated corresponding local crystal oscillator time of count value to geological data to be calibrated of gathering carry out time calibration, obtain the collection exploration time of the geological data to be calibrated after calibrating.Compared with prior art, can low cost improve earthquake data acquisition exploration time degree of accuracy.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the process flow diagram of a kind of embodiment of the calibration steps of the earthquake data acquisition exploration time that the application provides

Fig. 2 is the process flow diagram of the another kind of embodiment of the calibration steps of the earthquake data acquisition exploration time that the application provides;

Fig. 3 is a kind of schematic diagram of the calibrating installation of the earthquake data acquisition exploration time that the application provides;

Fig. 4 is the another kind of schematic diagram of the calibrating installation of the earthquake data acquisition exploration time that the application provides.

Embodiment

Technical scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all should belong to the scope of the application's protection.

The specific implementation of the embodiment of the present application is described below in detail with several concrete example.

Below a kind of embodiment of the calibration steps of a kind of earthquake data acquisition of the application exploration time is first introduced.Fig. 1 is the process flow diagram of a kind of embodiment of the calibration steps of the earthquake data acquisition exploration time that the application provides, this application provides the method operation steps as described in embodiment or process flow diagram, but based on conventional or more or less operation steps can be comprised without performing creative labour.The sequence of steps enumerated in embodiment is only a kind of mode in numerous step execution sequence, does not represent unique execution sequence.When device in practice or client production perform, can perform or executed in parallel (environment of such as parallel processor or multiple threads) according to embodiment or method shown in the drawings order.Specifically as shown in Figure 1, described method can comprise:

S110: the first current time obtaining satellite time service system, using the very first time of described first current time as local clock, the count value of the local crystal oscillator of initialization.

In this application, the first current time of satellite time service system can be obtained, using the very first time of described first current time as local clock, the count value of the local crystal oscillator of initialization.

In actual applications, described satellite time service system can include but not limited to satellite time service system GPS or big-dipper satellite time dissemination system.

In actual applications, described local crystal oscillator can include but not limited to VCXO.

S120: when arriving the default alignment time, judge that whether satellite-signal is effective.

In this application, when can arrive the default alignment time, judge that whether satellite-signal is effective.Concrete, in actual applications can in advance according to optimum configurations calibration cycles such as the precision of the described local crystal oscillator selected, the described default alignment time can be determined according to the calibration cycle pre-set.Such as, described calibration cycle can be 10S, accordingly, when 10S arrives the described default alignment time, can judge that whether satellite-signal is effective.

S130: when the result of described judgement be satellite-signal invalid time, described local crystal oscillator counts, and utilizes the count value of described local crystal oscillator to carry out acquisition time mark to geological data.

In this application, when step S120 judge result be satellite-signal invalid time, described local crystal oscillator can start to count, and utilizes the count value of described local crystal oscillator to carry out acquisition time mark to geological data.Concrete, the count value of described local crystal oscillator can adopt the mode of overflowing number of times and current count value to represent.

S140: when arriving the described default alignment time and described satellite-signal is effective, obtaining the second current time of described time dissemination system, recording the current count value of described local crystal oscillator, determining the current local crystal oscillator time that described current count value is corresponding.

In this application, after step s 130, when arriving the described default alignment time and described satellite-signal is effective, the second current time of described time dissemination system can be obtained, record the current count value of described local crystal oscillator, determine the current local crystal oscillator time that described current count value is corresponding.

Concrete, the described current local crystal oscillator time determining that described current count value is corresponding can comprise:

The described current local crystal oscillator time is calculated according to the current count value of described local crystal oscillator, the frequency of described local crystal oscillator and the very first time of described local clock.

Concrete, what the described current count value according to described local crystal oscillator, the described frequency of local crystal oscillator and the very first time of described local clock calculated the described current local crystal oscillator time can be as follows according to calculation formula:

$t_2^{\′}=\frac{{\mathrm{Count}}_1}{f}+t_{s1}$

In above formula, t' ₂represent the described current local crystal oscillator time; t _s1represent described first current time; Count ₁represent described current count value; F represents the frequency of described local crystal oscillator.

Further, the frequency of described local crystal oscillator can use the temperature parameter of described local crystal oscillator to adjust.

S150: calculate the single counting error time according to described first current time, the described very first time, described second current time, described current local crystal oscillator time and described current count value.

In this application, after step s 140, the single counting error time can be calculated according to described first current time, the described very first time, described second current time, described current local crystal oscillator time and described current count value.

Concrete, described calculate the computing formula of single counting error time according to described first current time, the described very first time, described second current time, described current local crystal oscillator time and described current count value can be as follows:

$t_0=\frac{(t_{s2}-t_{s1})-(t_2^{\′}-t_1)}{{\mathrm{Count}}_1}$

In above formula, t ₀represent the described single counting error time; t _s2represent described second current time; t _s1represent described first current time; T' ₂represent the described current local crystal oscillator time; t ₁represent the described very first time; Count ₁represent described current count value.

S160: the local crystal oscillator time determining geological data to be calibrated, utilize described single counting error time and the local crystal oscillator time of count value to described geological data to be calibrated corresponding to described geological data to be calibrated to carry out time calibration, obtain the collection exploration time after described geological data calibration to be calibrated.

In this application, after the step s 150, the local crystal oscillator time of geological data to be calibrated can be determined, utilize described single counting error time and the local crystal oscillator time of count value to described geological data to be calibrated corresponding to described geological data to be calibrated to carry out time calibration, obtain the collection exploration time after described geological data calibration to be calibrated.

Concrete, describedly determine that the local crystal oscillator time of geological data to be calibrated can comprise:

The local crystal oscillator time of geological data to be calibrated is calculated according to count value corresponding to described geological data to be calibrated, the frequency of described local crystal oscillator and the very first time of described local clock.

Concrete, the described count value corresponding according to described geological data to be calibrated, the frequency of described local crystal oscillator and the very first time of described local clock calculate the computing formula of the local crystal oscillator time of geological data to be calibrated can be as follows:

$t_d=\frac{{\mathrm{Count}}_d}{f}+t_{s1}$

In above formula, t _drepresent the local crystal oscillator time of geological data to be calibrated; t _s1represent described first current time; Count _drepresent the count value that described geological data to be calibrated is corresponding; F represents the frequency of described local crystal oscillator.

Further, the frequency of described local crystal oscillator can use the temperature parameter of described local crystal oscillator to adjust.

Concrete, describedly utilize described single counting error time and the local crystal oscillator time of count value to described geological data to be calibrated corresponding to described geological data to be calibrated to carry out time calibration, the computing formula obtaining the collection exploration time after described geological data calibration to be calibrated can be as follows:

t＝t ₀*Count _d+t _d

In above formula, t represents the collection exploration time of described geological data to be calibrated; t ₀represent the described single counting error time; Count ₁represent the corresponding count value of described geological data to be calibrated, t _drepresent the local crystal oscillator time of described geological data to be calibrated.

Fig. 2 is the process flow diagram of the another kind of embodiment of the calibration steps of the earthquake data acquisition exploration time that the application provides, and in certain embodiments, after step S120, as shown in Figure 2, described method also comprises:

S170: when the result of described judgement be satellite-signal effective time, obtain the current time of satellite time service system, using first current time of described current time as described satellite time service system, using the very first time of described current time as described local clock, the count value of local crystal oscillator described in initialization.

As can be seen here, the technical scheme that the embodiment that a kind of earthquake data acquisition of the application explores the calibration steps of time provides is in earthquake data acquisition equipment continuous acquisition recording process, when can satellite-signal be received, when the temporal information of satellite time service system can be used to calibrate local clock, when satellite-signal cannot be received, can in the default alignment time, local crystal oscillator count value is used to carry out interim acquisition time mark to geological data, then in the default alignment time and when can receive satellite-signal, the temporal information of satellite time service system can be used to calibrate local clock while, the single counting error time can be calculated according to the current and front temporal information of a satellite time service system and the local crystal oscillator count value etc. of correspondence, finally, can utilize the described single counting error time and satellite-signal invalid time the geological data to be calibrated corresponding local crystal oscillator time of count value to geological data to be calibrated of gathering carry out time calibration, obtain the collection exploration time of the geological data to be calibrated after calibrating.Compared with prior art, can low cost improve earthquake data acquisition exploration time degree of accuracy.

Fig. 3 is a kind of schematic diagram of the calibrating installation of the earthquake data acquisition exploration time that the application provides, and the application also provides a kind of earthquake data acquisition to explore the calibrating installation of time on the other hand, and as shown in Figure 3, described device 300 can comprise:

First data processing module 310, may be used for the first current time obtaining satellite time service system, using the very first time of described first current time as local clock, and the count value of the local crystal oscillator of initialization;

Judge module 320, when may be used for arriving the default alignment time, judges that whether satellite-signal is effective;

Second data processing module 330, may be used for when the result of described judgement be satellite-signal invalid time, described local crystal oscillator counts, and utilizes the count value of described local crystal oscillator to carry out acquisition time mark to geological data;

3rd data processing module 340, may be used for when arriving the described default alignment time and described satellite-signal is effective, obtain the second current time of described time dissemination system, record the current count value of described local crystal oscillator, determine the current local crystal oscillator time that described current count value is corresponding;

Computing module 350, may be used for calculating the single counting error time according to described first current time, the described very first time, described second current time, described current local crystal oscillator time and described current count value;

4th data processing module 360, may be used for the local crystal oscillator time determining geological data to be calibrated, utilize described single counting error time and the local crystal oscillator time of count value to described geological data to be calibrated corresponding to described geological data to be calibrated to carry out time calibration, obtain the collection exploration time after described geological data calibration to be calibrated.

Fig. 4 is the another kind of schematic diagram of the calibrating installation of the earthquake data acquisition exploration time that the application provides, and in a preferred embodiment, as shown in Figure 4, after judge module judges that whether satellite-signal is effective, described device 300 can also comprise:

5th data processing module 370, may be used for when the result of described judgement be satellite-signal effective time, obtain the current time of satellite time service system, using first current time of described current time as described satellite time service system, using the very first time of described current time as described local clock, the count value of local crystal oscillator described in initialization.

In a preferred embodiment, described 3rd data processing module 340 can comprise:

First computing unit, may be used for the current count value according to described local crystal oscillator, the frequency of described local crystal oscillator and the very first time of described local clock calculates the described current local crystal oscillator time.

In a preferred embodiment, the computing formula of described computing module 350 can be as follows:

$t_0=\frac{(t_{s2}-t_{s1})-(t_2^{\′}-t_1)}{{\mathrm{Count}}_1}$

In above formula, t ₀represent the described single counting error time; t _s2represent described second current time; t _s1represent described first current time; T' ₂represent the described current local crystal oscillator time; t ₁represent the described very first time; Count ₁represent described current count value.

In a preferred embodiment, described 4th data processing module 360 can comprise:

Second computing unit, for calculating the local crystal oscillator time of geological data to be calibrated according to count value corresponding to described geological data to be calibrated, the frequency of described local crystal oscillator and the very first time of described local clock.

In a preferred embodiment, the computing formula of described 4th data processing module 360 can be as follows:

t＝t ₀*Count _d+t _d

In above formula, t represents the collection exploration time of described geological data to be calibrated; t ₀represent the described single counting error time; Count ₁represent the corresponding count value of described geological data to be calibrated, t _drepresent the local crystal oscillator time of described geological data to be calibrated.

As can be seen here, the technical scheme that a kind of earthquake data acquisition exploration calibration steps of time of the application and the embodiment of device provide is in earthquake data acquisition equipment continuous acquisition recording process, when can satellite-signal be received, when the temporal information of satellite time service system can be used to calibrate local clock, when satellite-signal cannot be received, can in the default alignment time, local crystal oscillator count value is used to carry out interim acquisition time mark to geological data, then in the default alignment time and when can receive satellite-signal, the temporal information of satellite time service system can be used to calibrate local clock while, the single counting error time can be calculated according to the current and front temporal information of a satellite time service system and the local crystal oscillator count value etc. of correspondence, finally, can utilize the described single counting error time and satellite-signal invalid time the geological data to be calibrated corresponding local crystal oscillator time of count value to geological data to be calibrated of gathering carry out time calibration, obtain the collection exploration time of the geological data to be calibrated after calibrating.Compared with prior art, can low cost improve earthquake data acquisition exploration time degree of accuracy.

Each embodiment in this instructions all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.Especially, for system embodiment, because it is substantially similar to embodiment of the method, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.

Although depict the application by embodiment, those of ordinary skill in the art know, the application has many distortion and change and do not depart from the spirit of the application, and the claim appended by wishing comprises these distortion and change and do not depart from the spirit of the application.

Claims (12)

1. the calibration steps of earthquake data acquisition exploration time, it is characterized in that, described method comprises:

Obtain the first current time of satellite time service system, using the very first time of described first current time as local clock, the count value of the local crystal oscillator of initialization;

When arriving the default alignment time, judge that whether satellite-signal is effective;

When the result of described judgement be satellite-signal invalid time, described local crystal oscillator counts, and utilizes the count value of described local crystal oscillator to carry out acquisition time mark to geological data;

When arriving the described default alignment time and described satellite-signal is effective, obtaining the second current time of described time dissemination system, recording the current count value of described local crystal oscillator, determining the current local crystal oscillator time that described current count value is corresponding;

The single counting error time is calculated according to described first current time, the described very first time, described second current time, described current local crystal oscillator time and described current count value;

Determine the local crystal oscillator time of geological data to be calibrated, utilize described single counting error time and the local crystal oscillator time of count value to described geological data to be calibrated corresponding to described geological data to be calibrated to carry out time calibration, obtain the collection exploration time after described geological data calibration to be calibrated.

2. method according to claim 1, is characterized in that, when arriving the default alignment time, after judging that whether satellite-signal is effective, described method also comprises:

When the result of described judgement be satellite-signal effective time, obtain the current time of satellite time service system, using first current time of described current time as described satellite time service system, using the very first time of described current time as described local clock, the count value of local crystal oscillator described in initialization.

3. method according to claim 1 and 2, is characterized in that, the described current local crystal oscillator time determining that described current count value is corresponding comprises:

The described current local crystal oscillator time is calculated according to the current count value of described local crystal oscillator, the frequency of described local crystal oscillator and the very first time of described local clock.

4. method according to claim 1 and 2, it is characterized in that, described to calculate the computing formula of single counting error time according to described first current time, the described very first time, described second current time, described current local crystal oscillator time and described current count value as follows:

$t_0=\frac{(t_{s2}-t_{s1})-(t_2^{\′}-t_1)}{{\mathrm{Count}}_1}$

In above formula, t ₀represent the described single counting error time; t _s2represent described second current time; t _s1represent described first current time; T' ₂represent the described current local crystal oscillator time; t ₁represent the described very first time; Count ₁represent described current count value.

5. method according to claim 1 and 2, is characterized in that, describedly determines that the local crystal oscillator time of geological data to be calibrated comprises:

The local crystal oscillator time of geological data to be calibrated is calculated according to count value corresponding to described geological data to be calibrated, the frequency of described local crystal oscillator and the very first time of described local clock.

6. method according to claim 1 and 2, it is characterized in that, describedly utilize described single counting error time and the local crystal oscillator time of count value to described geological data to be calibrated corresponding to described geological data to be calibrated to carry out time calibration, the computing formula obtaining the collection exploration time after described geological data calibration to be calibrated is as follows:

t＝t ₀*Count _d+t _d

In above formula, t represents the collection exploration time of described geological data to be calibrated; t ₀represent the described single counting error time; Count ₁represent the corresponding count value of described geological data to be calibrated, t _drepresent the local crystal oscillator time of described geological data to be calibrated.

7. the calibrating installation of earthquake data acquisition exploration time, it is characterized in that, described device comprises:

First data processing module, for obtaining the first current time of satellite time service system, using the very first time of described first current time as local clock, the count value of the local crystal oscillator of initialization;

Judge module, during for arriving the default alignment time, judges that whether satellite-signal is effective;

Second data processing module, for when the result of described judgement be satellite-signal invalid time, described local crystal oscillator counts, and utilizes the count value of described local crystal oscillator to carry out acquisition time mark to geological data;

3rd data processing module, for when arriving the described default alignment time and described satellite-signal is effective, obtain the second current time of described time dissemination system, record the current count value of described local crystal oscillator, determine the current local crystal oscillator time that described current count value is corresponding;

Computing module, for calculating the single counting error time according to described first current time, the described very first time, described second current time, described current local crystal oscillator time and described current count value;

4th data processing module, for determining the local crystal oscillator time of geological data to be calibrated, utilize described single counting error time and the local crystal oscillator time of count value to described geological data to be calibrated corresponding to described geological data to be calibrated to carry out time calibration, obtain the collection exploration time after described geological data calibration to be calibrated.

8. device according to claim 7, is characterized in that, after judge module judges that whether satellite-signal is effective, described device also comprises:

5th data processing module, for when the result of described judgement be satellite-signal effective time, obtain the current time of satellite time service system, using first current time of described current time as described satellite time service system, using the very first time of described current time as described local clock, the count value of local crystal oscillator described in initialization.

9. the device according to claim 7 or 8, is characterized in that, described 3rd data processing module comprises:

First computing unit, calculates the described current local crystal oscillator time for the current count value according to described local crystal oscillator, the frequency of described local crystal oscillator and the very first time of described local clock.

10. the device according to claim 7 or 8, is characterized in that, the computing formula of described computing module is as follows:

$t_0=\frac{(t_{s2}-t_{s1})-(t_2^{\′}-t_1)}{{\mathrm{Count}}_1}$

In above formula, t ₀represent the described single counting error time; t _s2represent described second current time; t _s1represent described first current time; T' ₂represent the described current local crystal oscillator time; t ₁represent the described very first time; Count ₁represent described current count value.

11. devices according to claim 7 or 8, it is characterized in that, described 4th data processing module comprises:

Second computing unit, for calculating the local crystal oscillator time of geological data to be calibrated according to count value corresponding to described geological data to be calibrated, the frequency of described local crystal oscillator and the very first time of described local clock.

12. devices according to claim 7 or 8, it is characterized in that, the computing formula of described 4th data processing module is as follows:

t＝t ₀*Count _d+t _d

In above formula, t represents the collection exploration time of described geological data to be calibrated; t ₀represent the described single counting error time; Count ₁represent the corresponding count value of described geological data to be calibrated, t _drepresent the local crystal oscillator time of described geological data to be calibrated.