CN104181600A - Seismic data linear noise attenuation method and device - Google Patents
Seismic data linear noise attenuation method and device Download PDFInfo
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- CN104181600A CN104181600A CN201410421375.5A CN201410421375A CN104181600A CN 104181600 A CN104181600 A CN 104181600A CN 201410421375 A CN201410421375 A CN 201410421375A CN 104181600 A CN104181600 A CN 104181600A
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Abstract
The invention provides a seismic data linear noise attenuation method and device. The method comprises the steps that first seismic data are collected, gun records are arranged, and left arrangement seismic data and right arrangement seismic data are generated; the left arrangement seismic data and the left arrangement seismic data are subjected to energy balance treatment, and second seismic data are generated; a sample point where noise exists is scanned, an amplitude value is subjected to reverse energy balance treatment, and third seismic data are generated; the third seismic data are subjected to Fuji transformation, and frequency space domain seismic data are generated; the frequency space domain seismic data are subjected to linear noise prediction treatment, and fourth seismic data are generated; the fourth seismic data are subjected to reverse Fuji transformation into a time domain, and fifth seismic data are generated; left arrangement seismic data and right arrangement seismic data of the fifth seismic data are combined, and seismic data after noise prediction are generated; gun records of seismic data of the gun records, subjected to noise prediction reduction, of the first seismic data are generated into seismic data after linear noise attenuation.
Description
Technical field
The invention relates to geophysical survey data processing technique, particularly about a kind of geological data line noise damped system and device.
Background technology
In seismic data processing technology, linear noise usually affects stacking image effect, sometimes also can on stacked section, observe linear noise, and this linear noise often can be found on big gun record or geophone station record.In geological data, this class noise alleviation is also normally carried out on the big gun record of geological data prestack or geophone station record, conventional decay way is in FK territory, to carry out linear disturbance excision or decay in proportion, linear excision is exactly that FK territory is in the direct zero setting of noise region, according to the given ratio of user, decay exactly in proportion, ratio value must be greater than zero and be less than 1.But this method can produce certain spatial aliasing, affect stacking image effect, to seismic data, process and bring illusion, bring the loss that cannot estimate can to the post-processed of geological data.
Summary of the invention
The invention provides a kind of geological data line noise damped system, to improve line noise fade performance.
To achieve these goals, the invention provides a kind of geological data line noise damped system, described geological data line noise damped system comprises:
Gather the first geological data, according to the genuine reason position relationship of earthquake and sp location, the big gun record of described the first geological data is arranged, generate the left bank row geological data and the right arrangement geological data that are positioned at both sides, described sp location;
Described left bank row geological data and right arrangement geological data are carried out to balancing energy processing, generate the second geological data;
Each sampling point to described the second geological data carries out Noise scan, will exist the sampling point of noise to record, and forms noise big gun record, then the amplitude of all sampling points in described noise big gun record is carried out to anti-balancing energy processing, forms the 3rd geological data;
The 3rd described geological data is carried out to Fuji's conversion, generated frequency spatial domain geological data;
In territory, frequency space, territory, described frequency space geological data is carried out to line noise prediction processing, generate the 4th geological data;
The 4th described geological data is carried out to anti-Fuji and transform to time domain, generate the 5th geological data;
Left bank row geological data in described the 5th geological data and right arrangement geological data are combined to the geological data after generted noise prediction;
The big gun record of described the first geological data is deducted to the big gun record of the geological data after described noise prediction, generate the geological data after line noise decay.
In one embodiment, described the second geological data comprises: left bank row the second geological data and right arrangement the second geological data; Described the 3rd geological data comprises that left bank is listed as the 3rd geological data and right arrangement the 3rd geological data;
Each sampling point to described the second geological data carries out Noise scan, the amplitude that has all sampling points of noise is carried out to anti-balancing energy processing, form the 3rd geological data, comprise: each sampling point to described left bank row the second geological data carries out Noise scan, by there is the sampling point of noise, record, form noise big gun record, then the amplitude of all sampling points in described noise big gun record is carried out to anti-balancing energy processing, form left bank and be listed as the 3rd geological data.
In one embodiment, territory, frequency space geological data comprises left bank row frequency space territory geological data and territory, right arrangement frequency space geological data;
The 3rd described geological data is carried out to Fuji's conversion, and generated frequency spatial domain geological data, comprising: described left bank is listed as to the 3rd geological data and carries out Fuji's conversion, generate territory, described left bank row frequency space geological data.
In one embodiment, described the 4th geological data comprises that left bank is listed as the 4th geological data and right arrangement the 4th geological data;
In territory, frequency space, territory, described frequency space geological data is carried out to line noise prediction processing, generate the 4th geological data, comprise: in territory, frequency space, territory, described left bank row frequency space geological data is carried out to line noise prediction processing, generate left bank and be listed as the 4th geological data.
In one embodiment, the 4th described geological data is carried out to anti-Fuji and transform to time domain, generate the 5th geological data, comprising: described left bank is listed as to the 4th geological data and carries out anti-Fuji and transform to time domain, generate left bank and be listed as the 5th geological data.
In one embodiment, each sampling point to described the second geological data carries out Noise scan, the amplitude that has all sampling points of noise is carried out to anti-balancing energy processing, form the 3rd geological data, comprise: each sampling point to described right arrangement the second geological data carries out Noise scan, will exist the sampling point of noise to record, form noise big gun record, again the amplitude of all sampling points in described noise big gun record is carried out to anti-balancing energy processing, form right arrangement the 3rd geological data.
In one embodiment, the 3rd described geological data is carried out to Fuji's conversion, generated frequency spatial domain geological data, comprising: described right arrangement the 3rd geological data is carried out to Fuji's conversion, generate territory, described right arrangement frequency space geological data.
In one embodiment, in territory, frequency space, territory, described frequency space geological data is carried out to line noise prediction processing, generate the 4th geological data, comprise: in territory, frequency space, territory, described right arrangement frequency space geological data is carried out to line noise prediction processing, generate right arrangement the 4th geological data.
In one embodiment, the 4th described geological data is carried out to anti-Fuji and transform to time domain, generate the 5th geological data, comprising: described right arrangement the 4th geological data is carried out to anti-Fuji and transform to time domain, generate right arrangement the 5th geological data.
In one embodiment, when the left bank row geological data in described the 5th geological data and right arrangement geological data are combined, the serial number of seismic trace is arranged consistent with the serial number arrangement of the first geological data.
To achieve these goals, the invention provides a kind of geological data line noise attenuating device, described geological data line noise attenuating device comprises:
Data ordering unit, be used for gathering the first geological data, according to the genuine reason position relationship of earthquake and sp location, the big gun record of described the first geological data is arranged, generate the left bank row geological data and the right arrangement geological data that are positioned at both sides, described sp location;
Balancing energy processing unit, carries out balancing energy processing for the left bank row geological data to described and right arrangement geological data, generates the second geological data;
Anti-balancing energy processing unit, for each sampling point of described the second geological data is carried out to Noise scan, will exist the sampling point of noise to record, form noise big gun record, again the amplitude of all sampling points in described noise big gun record is carried out to anti-balancing energy processing, form the 3rd geological data;
Fuji's converter unit, carries out Fuji's conversion for the 3rd geological data to described, generated frequency spatial domain geological data;
Noise prediction is processed, and in territory, frequency space, territory, described frequency space geological data being carried out to line noise prediction processing, generates the 4th geological data;
Anti-Fuji converter unit, carries out anti-Fuji for the 4th geological data to described and transforms to time domain, generates the 5th geological data;
Data assembled unit, for the left bank row geological data of described the 5th geological data and right arrangement geological data are combined, the geological data after generted noise prediction;
Computing unit, for the big gun record of described the first geological data being deducted to the big gun record of the geological data after described noise prediction, generates the geological data after line noise decay.
In one embodiment, described the second geological data comprises: left bank row the second geological data and right arrangement the second geological data; Described the 3rd geological data comprises that left bank is listed as the 3rd geological data and right arrangement the 3rd geological data;
Described anti-balancing energy processing unit specifically for: each sampling point to described left bank row the second geological data carries out Noise scan, by there is the sampling point of noise, record, form noise big gun record, again the amplitude of all sampling points in described noise big gun record is carried out to anti-balancing energy processing, form left bank and be listed as the 3rd geological data.
In one embodiment, territory, frequency space geological data comprises left bank row frequency space territory geological data and territory, right arrangement frequency space geological data;
Described Fuji's converter unit specifically for: described left bank is listed as to the 3rd geological data and carries out Fuji's conversion, generate territory, described left bank row frequency space geological data.
In one embodiment, described the 4th geological data comprises that left bank is listed as the 4th geological data and right arrangement the 4th geological data;
Described noise prediction process specifically for: in territory, frequency space, territory, described left bank row frequency space geological data is carried out to line noise prediction processing, generates left bank and be listed as the 4th geological data.
In one embodiment, described anti-Fuji converter unit specifically for: described left bank is listed as to the 4th geological data and carries out anti-Fuji and transform to time domain, generate left bank and be listed as the 5th geological data.
In one embodiment, described anti-balancing energy processing unit specifically for: each sampling point to described right arrangement the second geological data carries out Noise scan, by there is the sampling point of noise, record, form noise big gun record, again the amplitude of all sampling points in described noise big gun record is carried out to anti-balancing energy processing, form right arrangement the 3rd geological data.
In one embodiment, described Fuji's converter unit specifically for: described right arrangement the 3rd geological data is carried out to Fuji's conversion, generates territory, described right arrangement frequency space geological data.
In one embodiment, described noise prediction process specifically for: in territory, frequency space, territory, described right arrangement frequency space geological data is carried out to line noise prediction processing, generates right arrangement the 4th geological data.
In one embodiment, described anti-Fuji converter unit specifically for: described right arrangement the 4th geological data is carried out to anti-Fuji and transforms to time domain, generate right arrangement the 5th geological data.
In one embodiment, when the left bank row geological data in described the 5th geological data and right arrangement geological data are combined, the serial number of seismic trace is arranged consistent with the serial number arrangement of the first geological data.
The present invention has utilized FX forecasting techniques, can improve predict noise precision, employing deducts from original big gun record the method that the noise big gun prediction records, denoising effect is better, geological data fidelity is higher, more can reach the object that improves shake data signal to noise ratio (S/N ratio) and resolution, thereby realized seismic exploration data signal to noise ratio (S/N ratio) and resolution, have all and improve greatly.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the geological data line noise damped system process flow diagram of the embodiment of the present invention;
Fig. 2 is the geological data line noise attenuating device structured flowchart of the embodiment of the present invention;
Original single big gun seismologic record schematic diagram before the linear sound attenuation of Fig. 3;
The linear noise big gun that Fig. 4 inclination angle energy scan goes out records schematic diagram;
The big gun that Fig. 5 carries out after noise prediction Fig. 4 noise data records schematic diagram;
Fig. 6 is for deducting the result schematic diagram of Fig. 5 noise big gun record data with Fig. 3 big gun record data;
Fig. 7 A is Fig. 4 data frequency spectral amplitude schematic diagram;
Fig. 7 B is Fig. 5 geological data frequency and amplitude spectrum schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the invention provides a kind of geological data line noise damped system, described geological data line noise damped system comprises:
S101: gather the first geological data, according to the genuine reason position relationship of earthquake and sp location, the big gun record of described the first geological data is arranged, generate the left bank row geological data and the right arrangement geological data that are positioned at both sides, described sp location;
S102: described left bank row geological data and right arrangement geological data are carried out to balancing energy processing, generate the second geological data;
S103: each sampling point to described the second geological data carries out Noise scan, by there is the sampling point of noise, record, form noise big gun record, then the amplitude of all sampling points in described noise big gun record is carried out to anti-balancing energy processing, form the 3rd geological data;
S104: the 3rd described geological data is carried out to Fuji's conversion, generated frequency spatial domain geological data;
S105: in territory, frequency space, territory, described frequency space geological data is carried out to line noise prediction processing, generate the 4th geological data;
S106: the 4th described geological data is carried out to anti-Fuji and transform to time domain, generate the 5th geological data;
S107: the left bank row geological data in described the 5th geological data and right arrangement geological data are combined to the geological data after generted noise prediction;
S108: the big gun record of described the first geological data is deducted to the big gun record of the geological data after described noise prediction, generate the geological data after line noise decay.
Flow process is as shown in Figure 1 known, geological data line noise damped system of the present invention, by field acquisition geological data, form big gun record, according to seismic trace geographic position relation, the sequencing of each seismic trace opsition dependent of big gun record is arranged, to guarantee the linear distribution of linear disturbance lineups, be convenient to line noise prediction.Big gun is recorded to seismic trace and by the position of shot point, be divided into two arrangements in left and right, geological data is carried out to balancing energy processing, the fundamental purpose of balancing energy is to scan more accurately line noise, geological data after equilibrium treatment is first carried out to the position that inclination angle energy scan is determined noise to each sampled point of left bank row, there is the sampling point amplitude of noise, record, until left bank is listed as each sampling point, carried out Noise scan, the noisy whole sampling point amplitudes of left bank row can form a left bank row noise data.Then these data are carried out to anti-balancing energy processing, it is exactly anti-a processing of balancing energy in fact that anti-balancing energy is processed, and geological data is multiplied by the inverse of balancing energy ratio.To the left bank row noise data after anti-equilibrium treatment, carry out Fuji's conversion, forming frequency spatial domain geological data, because linear disturbance lineups are foreseeable in frequency field, so can adopt conventional RNA seismic data processing technique to carry out line noise prediction processing in territory, frequency space, noise data after the prediction processing of forming frequency territory (RNA is actual is random noise compacting in FX territory, is used for predicting linear disturbance at this).Then Zuo Fan Fuji conversion process, is transformed into time domain, the noise data after the prediction processing of formation time territory the noise data after frequency field prediction.Same method is processed right array data, forms the noise data after right arrangement time domain prediction processing.These two data are combined, form the rear new big gun record data of whole big gun recording noise prediction, and the number of putting in order of seismic trace is consistent with the arrangement of original big gun record data.With the big gun record of original earthquake data, deduct new big gun record data after noise prediction, formed the geological data after line noise decay.Finally each big gun record of survey area is adopted to same processing, just completed the entirely decay of the line noise of seismic exploration work area geological data.
The present invention is some differences at aspects such as speed and energy according to linear noise and useful signal first, tentatively judge the sampling point that has linear noise energy on big gun record, and record the amplitude of these sampling points, then adopt linear lineups foreseeable principle in frequency field, in frequency field, line noise is carried out to prediction processing, can dope like this one containing the big gun record of linear noise, noise big gun record after prediction is higher than the resolution of the noise big gun recording noise before predicting, the noise of acquisition is also more accurate.The method denoising effect that employing deducts the noise big gun record prediction from original big gun record is just more reliable, more can reach the object that improves shake data signal to noise ratio (S/N ratio) and resolution.The present invention compares with the linear noise denoising method in FK territory, and after denoising, useful signal fidelity is higher, can process and establish solid foundation for later stage geological data fidelity.
In one embodiment, the second above-mentioned geological data comprises: left bank row the second geological data and right arrangement the second geological data, the 3rd geological data comprises that left bank is listed as the 3rd geological data and right arrangement the 3rd geological data.
In S101, the big gun record of the first geological data is arranged, can guarantee the linear distribution of linear disturbance lineups, be convenient to line noise prediction.
The left bank row geological data forming and right arrangement geological data have been equivalent to form two and have recorded little data than big gun.The direction of the interference noise lineups that arrange big gun record left and right if decide is like this just in time contrary, is not easy to big gun and records interference prediction, and noise prediction is arranged in a minute left and right just can avoid this problem completely.
In S102, described left bank row geological data and right arrangement geological data are carried out to balancing energy while processing, the balancing energy ratio adopting while simultaneously needing good each the sampled point balancing energy of record.
In one embodiment, when S103 specifically implements, need to carry out Noise scan to each sampling point of left bank row the second geological data, by there is the sampling point of noise, record, form noise big gun record, in this noise big gun record, left bank is listed as noisy sampling point amplitude can form a left bank row noise data, again the amplitude of all sampling points in left bank row noise data is carried out to anti-balancing energy processing, form left bank and be listed as the 3rd geological data.
In another embodiment, when S103 specifically implements, need to carry out Noise scan to each sampling point of described right arrangement the second geological data, by there is the sampling point of noise, record, form noise big gun record, in this noise big gun record, left bank is listed as noisy sampling point amplitude can form a left bank row noise data, again the amplitude of all sampling points in left bank row noise data is carried out to anti-balancing energy processing, form right arrangement the 3rd geological data.
Above-mentioned Noise scan can adopt the method for inclination angle energy scan.It should be noted that the direction of arrangement geological data inclination angle, the right energy scan and the opposite direction of left bank row geological data inclination angle energy scan.
Anti-balancing energy is treated to the anti-processing that S102 balancing energy is processed, and geological data is multiplied by the inverse of balancing energy ratio.
In S104, the 3rd geological data is carried out to Fuji's conversion, generated frequency spatial domain geological data, in territory, frequency space, adopt conventional RNA seismic data processing technique to carry out line noise prediction processing, new geological data is predicted in forming frequency territory, the method is actual is exactly by the method for Wella filtering, to ask predictive operator after Fuji's conversion, with predictive operator, each Frequency point is carried out to prediction processing, the data that forming frequency territory is new.
Territory, frequency space geological data comprises left bank row frequency space territory geological data and territory, right arrangement frequency space geological data.In one embodiment, when S104 specifically implements, can be listed as to described left bank the 3rd geological data and carry out Fuji's conversion, generate territory, left bank row frequency space geological data.
In another embodiment, when S104 specifically implements, can carry out Fuji's conversion to right arrangement the 3rd geological data, generate territory, right arrangement frequency space geological data.
The 4th geological data comprises that left bank is listed as the 4th geological data and right arrangement the 4th geological data.In one embodiment, when S105 specifically implements, in territory, frequency space, territory, described left bank row frequency space geological data is carried out to line noise prediction processing, generate left bank and be listed as the 4th geological data.In another embodiment, when S105 specifically implements, in territory, frequency space, territory, right arrangement frequency space geological data is carried out to line noise prediction processing, generate right arrangement the 4th geological data.
In one embodiment, when S106 specifically implements, described left bank is listed as to the 4th geological data and carries out anti-Fuji and transform to time domain, generate left bank and be listed as the 5th geological data.In another embodiment, when S106 specifically implements, can carry out anti-Fuji to described right arrangement the 4th geological data and transform to time domain, generate right arrangement the 5th geological data.
During concrete enforcement, when the left bank row geological data in the 5th geological data and right arrangement geological data are combined, the serial number of seismic trace is arranged consistent with the serial number arrangement of the first geological data.
As shown in Figure 2, the embodiment of the present invention provides a kind of geological data line noise attenuating device, described geological data line noise attenuating device comprises: data ordering unit 201, balancing energy processing unit 202, anti-balancing energy processing unit 203, Fuji's converter unit 204, noise prediction processes 205, anti-Fuji converter unit 206, data assembled unit 207 and computing unit 208.
Data ordering unit 201 can gather the first geological data, according to the genuine reason position relationship of earthquake and sp location, the big gun record of described the first geological data is arranged, generated the left bank row geological data and the right arrangement geological data that are positioned at both sides, described sp location.
Balancing energy processing unit 202 can carry out balancing energy processing to described left bank row geological data and right arrangement geological data, generates the second geological data.
Each sampling point of 203 pairs of described the second geological datas of anti-balancing energy processing unit carries out Noise scan, by there is the sampling point of noise, record, form noise big gun record, then the amplitude of all sampling points in described noise big gun record is carried out to anti-balancing energy processing, form the 3rd geological data.
204 pairs of the 3rd geological datas of Fuji's converter unit carry out Fuji's conversion, generated frequency spatial domain geological data.
Noise prediction processes 205 can carry out line noise prediction processing to territory, described frequency space geological data in territory, frequency space, generates the 4th geological data.
The 4th geological data described in 206 pairs of anti-Fuji converter units carries out anti-Fuji and transforms to time domain, generates the 5th geological data.
Data assembled unit 207 can combine the left bank row geological data in described the 5th geological data and right arrangement geological data, the geological data after generted noise prediction.
Computing unit 208 can deduct the big gun record of described the first geological data the big gun record of the geological data after described noise prediction, generate the geological data after line noise decay, territory, frequency space geological data comprises left bank row frequency space territory geological data and territory, right arrangement frequency space geological data, and described the 4th geological data comprises that left bank is listed as the 4th geological data and right arrangement the 4th geological data.
During concrete enforcement, the second geological data comprises: left bank row the second geological data and right arrangement the second geological data; Described the 3rd geological data comprises that left bank is listed as the 3rd geological data and right arrangement the 3rd geological data.
In one embodiment, anti-balancing energy processing unit 203 can carry out Noise scan to each sampling point of described left bank row the second geological data, by there is the sampling point of noise, record, form noise big gun record, again the amplitude of all sampling points in described noise big gun record is carried out to anti-balancing energy processing, form left bank and be listed as the 3rd geological data.
In another embodiment, anti-balancing energy processing unit 203 can carry out Noise scan to each sampling point of described right arrangement the second geological data, by there is the sampling point of noise, record, form noise big gun record, again the amplitude of all sampling points in described noise big gun record is carried out to anti-balancing energy processing, form right arrangement the 3rd geological data.
In one embodiment, Fuji's converter unit 204 can be listed as the 3rd geological data to left bank and carry out Fuji's conversion, generates territory, left bank row frequency space geological data.
In another embodiment, right arrangement the 3rd geological data described in 204 pairs of Fuji's converter units carries out Fuji's conversion, generates territory, described right arrangement frequency space geological data.
In one embodiment, noise prediction processes concrete 205 can carry out line noise prediction processing to territory, described left bank row frequency space geological data in territory, frequency space, generates left bank and is listed as the 4th geological data.
In another embodiment, noise prediction processes 205 can carry out line noise prediction processing to territory, described right arrangement frequency space geological data in territory, frequency space, generates right arrangement the 4th geological data.
In one embodiment, anti-Fuji converter unit 206 can be listed as the 4th geological data to left bank to carry out anti-Fuji and transforms to time domain, generates left bank and is listed as the 5th geological data.
In another embodiment, anti-Fuji converter unit 206 can carry out anti-Fuji to described right arrangement the 4th geological data and transform to time domain, generates right arrangement the 5th geological data.
In one embodiment, when the left bank row geological data in 207 pairs of the 5th geological datas of data assembled unit and right arrangement geological data combine, the serial number of seismic trace is arranged and is arranged consistent with the serial number of the first geological data.
The present invention has utilized FX forecasting techniques, can improve predict noise precision, employing deducts from original big gun record the method that the noise big gun prediction records, denoising effect is better, geological data fidelity is higher, more can reach the object that improves shake data signal to noise ratio (S/N ratio) and resolution, thereby realized seismic exploration data signal to noise ratio (S/N ratio) and resolution, have all and improve greatly.
For a better understanding of the present invention, below in conjunction with specific embodiment, describe.
Fig. 3 is original single big gun seismologic record schematic diagram before linear sound attenuation, and this list big gun seismologic record sorts by geographic position, and what in Fig. 3, horizontal ordinate direction showed is seismic trace Taoist monastic name, and what ordinate direction showed is the sampling point time of each seismic trace.
Fig. 3 geological data is carried out to balancing energy processing, and processing is arranged in a minute left and right.Geological data is arranged in left and right and carry out respectively inclination angle energy scan, geological data is arranged in left and right has the sampling point of noise existence all to record, then carry out anti-balancing energy processing, form noise data big gun record, the linear noise big gun record going out as Fig. 4 inclination angle energy scan.Although can find line noise from Fig. 4 is determined by the method for inclination angle energy scan, but continuity or poor, also there is error in the way that this definite noise is described, this error makes up by the foreseeable method of lineups of line noise.So the linear noise big gun that the present invention need to go out inclination angle energy scan records Fuji and transforms to frequency field, and FX territory, carries out FX territory prediction processing, then the data inverse transformation after prediction processing to time domain, form the big gun record after noise prediction, as Fig. 5.
After noise files is predicted by FX territory, the precision of noise is greatly improved, as shown in Figure 7.In Fig. 7, what horizontal ordinate direction showed is the frequency of geological data, what ordinate direction showed is amplitude, because the main frequency of ground roll is at 7-8Hz, ground roll more than 12Hz is very weak, but also there is useful signal energy seldom in the noise data frequency spectrum obtaining after the scanning of inclination angle the ratio of energy, especially in the above part of 12Hz, as the amplitude spectrogram of Fig. 7 A.The amplitude spectrogram of comparison diagram 7B, the above useful signal energy of 12Hz obviously weakens, and this has just proved that the line noise precision doping is higher, and this is that the present invention carries out the main cause of line noise prediction in FX territory.
Finally with original big gun record data, deduct the noise data that FX territory dopes, obtain the seismologic record after line noise decay, with Fig. 3 original earthquake data, deduct the noise data that Fig. 5 dopes, obtain Fig. 6 geological data.
Theoretical analysis and actual seismic data experiment show, a kind of line noise of the present invention efficiently predicts that decay technique can improve the precision of prediction of line noise, has improved to a great extent signal to noise ratio (S/N ratio) and the resolution of geological data.Simultaneously owing to adopting, in time domain, carry out noise attentuation, with FK territory line noise decling phase ratio, more can keep the waveform of geological data after linear denoising, effectively avoided denoising after data produce alias.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code one or more.
The present invention is with reference to describing according to process flow diagram and/or the block scheme of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block scheme each flow process and/or the flow process in square frame and process flow diagram and/or block scheme and/or the combination of square frame.Can provide these computer program instructions to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computing machine or other programmable data processing device is produced for realizing the device in the function of flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computing machine or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame on computing machine or other programmable devices.
It should be noted that, adopt " first ", " second ", " the 3rd ", " the 4th ", " the 5th " to be described in instructions, is only in order to distinguish limited content, prevents from obscuring, and is not defined for restriction order.
In the present invention, applied specific embodiment principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (20)
1. a geological data line noise damped system, is characterized in that, described geological data line noise damped system comprises:
Gather the first geological data, according to the genuine reason position relationship of earthquake and sp location, the big gun record of described the first geological data is arranged, generate the left bank row geological data and the right arrangement geological data that are positioned at both sides, described sp location;
Described left bank row geological data and right arrangement geological data are carried out to balancing energy processing, generate the second geological data;
Each sampling point to described the second geological data carries out Noise scan, will exist the sampling point of noise to record, and forms noise big gun record, then the amplitude of all sampling points in described noise big gun record is carried out to anti-balancing energy processing, forms the 3rd geological data;
The 3rd described geological data is carried out to Fuji's conversion, generated frequency spatial domain geological data;
In territory, frequency space, territory, described frequency space geological data is carried out to line noise prediction processing, generate the 4th geological data;
The 4th described geological data is carried out to anti-Fuji and transform to time domain, generate the 5th geological data;
Left bank row geological data in described the 5th geological data and right arrangement geological data are combined to the geological data after generted noise prediction;
The big gun record of described the first geological data is deducted to the big gun record of the geological data after described noise prediction, generate the geological data after line noise decay.
2. geological data line noise damped system according to claim 1, is characterized in that, described the second geological data comprises: left bank row the second geological data and right arrangement the second geological data; Described the 3rd geological data comprises that left bank is listed as the 3rd geological data and right arrangement the 3rd geological data;
Each sampling point to described the second geological data carries out Noise scan, the amplitude that has all sampling points of noise is carried out to anti-balancing energy processing, form the 3rd geological data, comprise: each sampling point to described left bank row the second geological data carries out Noise scan, by there is the sampling point of noise, record, form noise big gun record, then the amplitude of all sampling points in described noise big gun record is carried out to anti-balancing energy processing, form left bank and be listed as the 3rd geological data.
3. geological data line noise damped system according to claim 2, is characterized in that, territory, frequency space geological data comprises left bank row frequency space territory geological data and territory, right arrangement frequency space geological data;
The 3rd described geological data is carried out to Fuji's conversion, and generated frequency spatial domain geological data, comprising: described left bank is listed as to the 3rd geological data and carries out Fuji's conversion, generate territory, described left bank row frequency space geological data.
4. geological data line noise damped system according to claim 3, is characterized in that, described the 4th geological data comprises that left bank is listed as the 4th geological data and right arrangement the 4th geological data;
In territory, frequency space, territory, described frequency space geological data is carried out to line noise prediction processing, generate the 4th geological data, comprise: in territory, frequency space, territory, described left bank row frequency space geological data is carried out to line noise prediction processing, generate left bank and be listed as the 4th geological data.
5. geological data line noise damped system according to claim 4, it is characterized in that, the 4th described geological data is carried out to anti-Fuji and transform to time domain, generate the 5th geological data, comprise: described left bank is listed as to the 4th geological data and carries out anti-Fuji and transform to time domain, generate left bank and be listed as the 5th geological data.
6. geological data line noise damped system according to claim 5, is characterized in that,
Each sampling point to described the second geological data carries out Noise scan, the amplitude that has all sampling points of noise is carried out to anti-balancing energy processing, form the 3rd geological data, comprise: each sampling point to described right arrangement the second geological data carries out Noise scan, by there is the sampling point of noise, record, form noise big gun record, then the amplitude of all sampling points in described noise big gun record is carried out to anti-balancing energy processing, form right arrangement the 3rd geological data.
7. geological data line noise damped system according to claim 6, is characterized in that,
The 3rd described geological data is carried out to Fuji's conversion, and generated frequency spatial domain geological data, comprising: described right arrangement the 3rd geological data is carried out to Fuji's conversion, generate territory, described right arrangement frequency space geological data.
8. geological data line noise damped system according to claim 7, is characterized in that,
In territory, frequency space, territory, described frequency space geological data is carried out to line noise prediction processing, generate the 4th geological data, comprise: in territory, frequency space, territory, described right arrangement frequency space geological data is carried out to line noise prediction processing, generate right arrangement the 4th geological data.
9. geological data line noise damped system according to claim 8, it is characterized in that, the 4th described geological data is carried out to anti-Fuji and transform to time domain, generate the 5th geological data, comprise: described right arrangement the 4th geological data is carried out to anti-Fuji and transform to time domain, generate right arrangement the 5th geological data.
10. geological data line noise damped system according to claim 9, is characterized in that,
When the left bank row geological data in described the 5th geological data and right arrangement geological data are combined, the serial number of seismic trace is arranged consistent with the serial number arrangement of the first geological data.
11. 1 kinds of geological data line noise attenuating devices, is characterized in that, described geological data line noise attenuating device comprises:
Data ordering unit, be used for gathering the first geological data, according to the genuine reason position relationship of earthquake and sp location, the big gun record of described the first geological data is arranged, generate the left bank row geological data and the right arrangement geological data that are positioned at both sides, described sp location;
Balancing energy processing unit, carries out balancing energy processing for the left bank row geological data to described and right arrangement geological data, generates the second geological data;
Anti-balancing energy processing unit, for each sampling point of described the second geological data is carried out to Noise scan, will exist the sampling point of noise to record, form noise big gun record, again the amplitude of all sampling points in described noise big gun record is carried out to anti-balancing energy processing, form the 3rd geological data;
Fuji's converter unit, carries out Fuji's conversion for the 3rd geological data to described, generated frequency spatial domain geological data;
Noise prediction is processed, and in territory, frequency space, territory, described frequency space geological data being carried out to line noise prediction processing, generates the 4th geological data;
Anti-Fuji converter unit, carries out anti-Fuji for the 4th geological data to described and transforms to time domain, generates the 5th geological data;
Data assembled unit, for the left bank row geological data of described the 5th geological data and right arrangement geological data are combined, the geological data after generted noise prediction;
Computing unit, for the big gun record of described the first geological data being deducted to the big gun record of the geological data after described noise prediction, generates the geological data after line noise decay.
12. geological data line noise attenuating devices according to claim 11, is characterized in that, described the second geological data comprises: left bank row the second geological data and right arrangement the second geological data; Described the 3rd geological data comprises that left bank is listed as the 3rd geological data and right arrangement the 3rd geological data;
Described anti-balancing energy processing unit specifically for: each sampling point to described left bank row the second geological data carries out Noise scan, by there is the sampling point of noise, record, form noise big gun record, again the amplitude of all sampling points in described noise big gun record is carried out to anti-balancing energy processing, form left bank and be listed as the 3rd geological data.
13. geological data line noise attenuating devices according to claim 12, is characterized in that, territory, frequency space geological data comprises left bank row frequency space territory geological data and territory, right arrangement frequency space geological data;
Described Fuji's converter unit specifically for: described left bank is listed as to the 3rd geological data and carries out Fuji's conversion, generate territory, described left bank row frequency space geological data.
14. geological data line noise attenuating devices according to claim 13, is characterized in that, described the 4th geological data comprises that left bank is listed as the 4th geological data and right arrangement the 4th geological data;
Described noise prediction process specifically for: in territory, frequency space, territory, described left bank row frequency space geological data is carried out to line noise prediction processing, generates left bank and be listed as the 4th geological data.
15. geological data line noise attenuating devices according to claim 14, it is characterized in that, described anti-Fuji converter unit specifically for: described left bank is listed as to the 4th geological data and carries out anti-Fuji and transform to time domain, generate left bank and be listed as the 5th geological data.
16. geological data line noise attenuating devices according to claim 15, is characterized in that,
Described anti-balancing energy processing unit specifically for: each sampling point to described right arrangement the second geological data carries out Noise scan, by there is the sampling point of noise, record, form noise big gun record, again the amplitude of all sampling points in described noise big gun record is carried out to anti-balancing energy processing, form right arrangement the 3rd geological data.
17. geological data line noise attenuating devices according to claim 16, is characterized in that,
Described Fuji's converter unit specifically for: described right arrangement the 3rd geological data is carried out to Fuji's conversion, generates territory, described right arrangement frequency space geological data.
18. geological data line noise attenuating devices according to claim 17, is characterized in that,
Described noise prediction process specifically for: in territory, frequency space, territory, described right arrangement frequency space geological data is carried out to line noise prediction processing, generates right arrangement the 4th geological data.
19. geological data line noise attenuating devices according to claim 18, it is characterized in that, described anti-Fuji converter unit specifically for: described right arrangement the 4th geological data is carried out to anti-Fuji and transforms to time domain, generate right arrangement the 5th geological data.
20. geological data line noise attenuating devices according to claim 19, is characterized in that,
When the left bank row geological data in described the 5th geological data and right arrangement geological data are combined, the serial number of seismic trace is arranged consistent with the serial number arrangement of the first geological data.
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