Method and device for determining scanning matrix

Abstract

The invention discloses a method and device for determining a scanning matrix, and the method comprises the steps: carrying out the excitation test of simple harmonic waves with the same scanning length in a stable output frequency band range of a vibroseis, and determining a frequency band with the highest signal-to-noise ratio as an orthogonal design frequency band of a simple harmonic wave scanning signal according to a test result; performing excitation test on the simple harmonic waves with different scanning lengths, determining the similarity and the signal-to-noise ratio of the observation value received by the sensor and the scanning signal, and selecting the scanning length corresponding to the observation value with the highest similarity and the highest signal-to-noise ratio with the scanning signal; determining the frequency range of the scanning signal according to the orthogonal design frequency band and the scanning length of the simple harmonic scanning signal; determining the minimum number of scanning signals according to the minimum number of orthogonal excitation signals; according to the minimum number, the frequency range, the orthogonal design frequency band and the scanning length of the simple harmonic scanning signals, the scanning matrix is accurately determined, the reliability of geological information extraction is improved, and the authenticity of geological information is ensured.

Description

Technical Field

[0001] The present invention relates to the field of geophysical exploration technology, and in particular to a method and device for determining a scanning matrix. Background Art

[0002] This section is intended to provide a background or context to the embodiments of the invention recited in the claims. No admission is made that the description herein is prior art by inclusion in this section.

[0003] At present, taking deconvolution as an example, the bottleneck of extracting geological information using inversion methods is the near-field wavelet, that is, the excitation signal cannot be accurately obtained, which limits seismic exploration to directly use inversion methods to extract rock physical parameters, thereby obtaining the required geological information. However, the accuracy of parameters obtained by conventional seismic exploration methods is very low, and the authenticity of rock physical parameters cannot be guaranteed. Under the premise of accurately knowing the shape of the scanning signal, these responses can be accurately extracted by deconvolution. However, if the scanning signal is unknown, then the result of its deconvolution will produce a large error like correlation. Therefore, there is an urgent need for a method to accurately determine the scanning signal. Summary of the invention

[0004] The embodiment of the present invention provides a method for determining a scanning matrix, which is used to accurately determine a scanning signal, improve the reliability of inversion geological information extraction, and ensure the authenticity of geological information in seismic exploration. The method includes:

[0005] Within the stable output frequency band of the controllable vibrator, a simple harmonic wave with the same scanning length is tested for excitation, and the frequency band with the highest signal-to-noise ratio is determined as the orthogonal design frequency band of the simple harmonic wave scanning signal according to the test results;

[0006] According to the orthogonal design frequency band of the simple harmonic wave scanning signal, the simple harmonic wave with different scanning lengths is excited and tested, and the similarity and signal-to-noise ratio between the observation value received by the sensor and the scanning signal are determined according to the test results, and the scanning length corresponding to the observation value with the highest similarity to the scanning signal and the highest signal-to-noise ratio is selected to be determined as the scanning length of the simple harmonic wave scanning signal;

[0007] Determine the frequency range of the simple harmonic wave scanning signal according to the orthogonal design frequency band and scanning length of the simple harmonic wave scanning signal;

[0008] Determine the minimum number of orthogonal excitation signals required to meet the target accuracy of the extracted response according to the orthogonal design frequency band of the simple harmonic wave scanning signal and the Hooke equation, and determine the minimum number of orthogonal excitation signals as the minimum number of simple harmonic wave scanning signals in the orthogonal simple harmonic wave scanning matrix;

[0009] The orthogonal simple harmonic wave scanning matrix is ​​determined according to the minimum number of simple harmonic wave scanning signals, the frequency range, the orthogonal design frequency band and the scanning length.

[0010] The embodiment of the present invention further provides a scanning matrix determination device for accurately determining scanning signals, improving the reliability of inversion geological information extraction, and ensuring the authenticity of geological information in seismic exploration. The device includes:

[0011] A simple harmonic wave scanning signal orthogonal design frequency band determination module is used to perform excitation tests on simple harmonic waves of the same scanning length within the stable output frequency band of the controllable vibrator, and determine the frequency band with the highest signal-to-noise ratio as the orthogonal design frequency band of the simple harmonic wave scanning signal according to the test results;

[0012] A simple harmonic wave scanning signal scanning length determination module is used to perform excitation tests on simple harmonic waves of different scanning lengths according to the orthogonal design frequency band of the simple harmonic wave scanning signal, determine the similarity and signal-to-noise ratio between the observation value received by the sensor and the scanning signal according to the test results, select the scanning length corresponding to the observation value with the highest similarity to the scanning signal and the highest signal-to-noise ratio, and determine it as the scanning length of the simple harmonic wave scanning signal;

[0013] A simple harmonic wave scanning signal frequency range determination module is used to determine the frequency range of the simple harmonic wave scanning signal according to the orthogonal design frequency band and scanning length of the simple harmonic wave scanning signal;

[0014] A simple harmonic wave scanning signal quantity determination module is used to determine the minimum number of orthogonal excitation signals required to meet the target accuracy of the extracted response according to the orthogonal design frequency band of the simple harmonic wave scanning signal and the Hooke equation, and determine the minimum number of orthogonal excitation signals as the minimum number of simple harmonic wave scanning signals in the orthogonal simple harmonic wave scanning matrix;

[0015] The orthogonal simple harmonic wave scanning matrix determination module is used to determine the orthogonal simple harmonic wave scanning matrix according to the minimum number of simple harmonic wave scanning signals, the frequency range, the orthogonal design frequency band and the scanning length.

[0016] An embodiment of the present invention further provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned method for determining the scanning matrix when executing the computer program.

[0017] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for determining the scanning matrix is ​​implemented.

[0018] An embodiment of the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the method for determining the scanning matrix is ​​implemented.

[0019] In the embodiment of the present invention, an excitation test is performed on a harmonic wave of the same scanning length within the stable output frequency band of the controllable vibrator, and the frequency band with the highest signal-to-noise ratio is determined as the orthogonal design frequency band of the harmonic wave scanning signal according to the test result; an excitation test is performed on a harmonic wave of different scanning lengths according to the orthogonal design frequency band of the harmonic wave scanning signal, and the similarity and signal-to-noise ratio between the observation value received by the sensor and the scanning signal are determined according to the test result, and the scanning length corresponding to the observation value with the highest similarity to the scanning signal and the highest signal-to-noise ratio is selected and determined as the scanning length of the harmonic wave scanning signal; and the scanning length corresponding to the harmonic wave scanning signal is determined according to the orthogonal design frequency band of the harmonic wave scanning signal. The orthogonal design frequency band and scanning length of the simple harmonic scanning signal are used to determine the frequency range of the simple harmonic scanning signal; the minimum number of orthogonal excitation signals required to meet the target accuracy of the extracted response is determined according to the orthogonal design frequency band of the simple harmonic scanning signal and the Hooke's equation, and the minimum number of orthogonal excitation signals is determined as the minimum number of simple harmonic scanning signals in the orthogonal simple harmonic scanning matrix; according to the minimum number, frequency range, orthogonal design frequency band and scanning length of the simple harmonic scanning signal, the orthogonal simple harmonic scanning matrix is ​​accurately determined to improve the reliability of the inversion geological information extraction and ensure the authenticity of the geological information in seismic exploration. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0021] Figure 1 is a flow chart of a method for determining a scan matrix in an embodiment of the present invention;

[0022] Figure 2 is an equivalent scanning signal formed by connecting orthogonal single frequencies in series in an embodiment of the present invention;

[0023] Figure 3 It is an underground response diagram simulated by random numbers in an embodiment of the present invention;

[0024] Figure 4 A conventional scanning signal diagram in an embodiment of the present invention;

[0025] Figure 5 Comparison of the force signal TF spectrum of the scanning signal and the harmonic interference simulation in the embodiment of the present invention;

[0026] Figure 6 is a diagram showing the deconvolution result of a conventional scanning signal in an embodiment of the present invention;

[0027] Figure 7is the deconvolution result of the orthogonal simple harmonic wave scanning signal in the embodiment of the present invention;

[0028] Figure 8 Schematic diagram of a device for determining a scan matrix in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0030] Figure 1 Flow chart of a method for determining a scan matrix in an embodiment of the present invention, the method comprising:

[0031] Step 101, within the stable output frequency band of the controllable vibrator, perform an excitation test on a simple harmonic wave with the same scanning length, and determine, based on the test result, the frequency band with the highest signal-to-noise ratio as the orthogonal design frequency band of the simple harmonic wave scanning signal;

[0032] Step 102, according to the orthogonal design frequency band of the simple harmonic wave scanning signal, perform excitation test on the simple harmonic waves of different scanning lengths, determine the similarity and signal-to-noise ratio between the observation value received by the sensor and the scanning signal according to the test result, select the scanning length corresponding to the observation value with the highest similarity to the scanning signal and the highest signal-to-noise ratio, and determine it as the scanning length of the simple harmonic wave scanning signal;

[0033] Step 103, determining the frequency range of the simple harmonic wave scanning signal according to the orthogonal design frequency band and scanning length of the simple harmonic wave scanning signal;

[0034] Step 104, determining the minimum number of orthogonal excitation signals required to meet the target accuracy of the extracted response according to the orthogonal design frequency band of the simple harmonic wave scanning signal and the Hooke equation, and determining the minimum number of orthogonal excitation signals as the minimum number of simple harmonic wave scanning signals in the orthogonal simple harmonic wave scanning matrix;

[0035] Step 105 , determining an orthogonal harmonic wave scanning matrix according to the minimum number of harmonic wave scanning signals, the frequency range, the orthogonal design frequency band and the scanning length.

[0036] Each step is described in detail below.

[0037] In step 101, within the stable output frequency band of the controllable vibrator, a simple harmonic wave with the same scanning length is excited and tested, and the frequency band with the highest signal-to-noise ratio is determined as the orthogonal design frequency band of the simple harmonic wave scanning signal according to the test result.

[0038] In one embodiment, it further includes:

[0039] During the excitation test, the observation value received by the sensor is determined based on the excitation signal.

[0040] The observed value is calculated according to the following formula:

[0041] f(t)=ξ(τ)*r×e μt +n;

[0042] Where f(t) is the observation value received by the sensor, ξ(τ) is the excitation signal, r is the wave impedance, and e μt It is the comprehensive response of the geological body including spherical diffusion. It is a nonlinear attenuation term. μ is the spatial variable, t is the response time, and n is the environmental noise.

[0043] In a specific embodiment, the propagation of the excitation signal (near-field sub-wave) can be regarded as two systems, one is an active system and the other is a passive system. The process of the excitation signal is an active system, such as the detonation force generated by explosives. Once the type of explosives is fixed and the amount of explosives is fixed, it is a fixed mechanism of action. The final response is different because different surrounding rocks respond differently to their detonation energy. The same is true for source scanning. Different surface conditions form different responses, making the near-field sub-wave morphology changeable and difficult to accurately determine. As a passive system, its response to the active system is only a transfer function, a transfer with passive system characteristics. This transfer process can be represented by the observation value received by the sensor.

[0044] In step 102, based on the orthogonal design frequency band of the simple harmonic wave scanning signal, an excitation test is performed on the simple harmonic wave of different scanning lengths, and the similarity and signal-to-noise ratio between the observation value received by the sensor and the scanning signal are determined based on the test results. The scanning length corresponding to the observation value with the highest similarity to the scanning signal and the highest signal-to-noise ratio is selected and determined as the scanning length of the simple harmonic wave scanning signal.

[0045] In a specific embodiment, based on the stable output frequency band range of the controllable seismic source, an excitation test is performed with orthogonal simple harmonic waves of the same scanning length at a certain scanning interval, and the test results are analyzed to determine that the frequency band with the highest signal-to-noise ratio is the orthogonal design frequency band of the simple harmonic wave scanning signal.

[0046] In step 103, the frequency range of the simple harmonic wave scanning signal is determined according to the orthogonal design frequency band and scanning length of the simple harmonic wave scanning signal.

[0047] In one embodiment, determining the orthogonal simple harmonic wave scanning matrix further includes:

[0048] In the frequency range of the simple harmonic wave scanning signal, simple harmonic wave scanning signals of different frequencies without multiple relationship are selected to determine an orthogonal simple harmonic wave scanning matrix.

[0049] In a specific embodiment, if 20-60 Hz is obtained as the frequency band with the highest signal-to-noise ratio in the exploration area, considering the orthogonality requirement of harmonic interference, the frequency selection for constructing the orthogonal simple harmonic scanning matrix should satisfy that the final frequency is less than twice the starting frequency, so 20-39.9 Hz or 30-59.9 Hz can actually be selected.

[0050] In step 104, the minimum number of orthogonal excitation signals required to meet the target accuracy of the extracted response is determined based on the orthogonal design frequency band of the simple harmonic wave scanning signal and the Hooke's equation, and the minimum number of orthogonal excitation signals is determined as the minimum number of simple harmonic wave scanning signals in the orthogonal simple harmonic wave scanning matrix.

[0051] In one embodiment, the minimum number of orthogonal excitation signals required to meet the target accuracy of the extracted response is determined based on the orthogonal design frequency band of the simple harmonic scanning signal and the Hooke equation, including:

[0052] The simple harmonic scanning signal with orthogonal frequency band is used to deconvolve and stack the seismic data of the same path;

[0053] The deconvolution and stacking results are compared with the seismic data, and the minimum number of orthogonal excitation signals required to meet the target accuracy of the extracted response is determined based on the comparison results and the Hooke equation.

[0054] In a specific embodiment, for the same point vibration, within the orthogonal design frequency band determined by the simple harmonic wave scanning signal, the seismic data of the same path are deconvolved and then superimposed and fitted; the minimum number of orthogonal excitation signals required to meet the target accuracy of the extraction response is determined by comparing the deconvolution superposition or fitting results with the logging data or with the horizontal stacking data, which is the minimum number of elements in the orthogonal simple harmonic wave scanning matrix. Then, the scanning signal is designed according to the minimum number of orthogonal excitation signals required to meet the target accuracy of the extraction response. If 10 scanning signals are required, 10 simple harmonics of different frequencies are arbitrarily selected from the frequency of the orthogonal simple harmonic wave scanning matrix of 20-39.9Hz, or the 10 scanning signals can be designed with equal steps.

[0055] In step 105, an orthogonal simple harmonic wave scanning matrix is ​​determined according to the minimum number of simple harmonic wave scanning signals, the frequency range, the orthogonal design frequency band and the scanning length.

[0056] In one embodiment, after determining the orthogonal harmonic wave scanning matrix according to the minimum number of harmonic wave scanning signals, the frequency range, the orthogonal design frequency band and the scanning length, the method further includes:

[0057] Connect multiple simple harmonic waves in series and complete the scanning of multiple simple harmonic waves in one scan.

[0058] In a specific embodiment, since the scanning length of a single harmonic wave may be very short, in order to improve the excitation efficiency, multiple harmonic waves may be connected in series, so that one scan completes the scanning of multiple harmonic waves, such as Figure 2 shown.

[0059] A simulation experiment was conducted based on the embodiment of the present invention, and the scanning signal obtained by the conventional method was compared. In the prior art, taking deconvolution as an example, the bottleneck of extracting geological information using the inversion method is that the excitation signal cannot be accurately obtained, which limits the direct use of the inversion method to extract rock physical parameters in seismic exploration, thereby obtaining the required geological information; however, the conventional seismic exploration method has low accuracy and does not preserve fidelity. Now, a random sequence is used to replace the underground geological body response, which is convolved with the scanning signal and the force signal respectively, to obtain the record before the conventional scanning correlation, such as Figures 3 to 7 As shown in the figure, the comparison shows that the orthogonal simple harmonic wave scanning matrix solves the bottleneck problem of deconvolution extraction of geological information due to the inability to accurately obtain the excitation signal.

[0060] The present invention also provides a scanning matrix determination device in an embodiment, as described in the following embodiment. Since the principle of solving the problem by the device is similar to the scanning matrix determination method, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated. Figure 8 As shown, the device comprises:

[0061] The simple harmonic wave scanning signal orthogonal design frequency band determination module 801 is used to perform excitation test on simple harmonic waves of the same scanning length within the stable output frequency band of the controllable vibrator, and determine the frequency band with the highest signal-to-noise ratio as the orthogonal design frequency band of the simple harmonic wave scanning signal according to the test results;

[0062] A simple harmonic wave scanning signal scanning length determination module 802 is used to perform excitation tests on simple harmonic waves of different scanning lengths according to the orthogonal design frequency band of the simple harmonic wave scanning signal, determine the similarity and signal-to-noise ratio between the observation value received by the sensor and the scanning signal according to the test results, select the scanning length corresponding to the observation value with the highest similarity to the scanning signal and the highest signal-to-noise ratio, and determine it as the scanning length of the simple harmonic wave scanning signal;

[0063] A simple harmonic wave scanning signal frequency range determination module 803 is used to determine the frequency range of the simple harmonic wave scanning signal according to the orthogonal design frequency band and scanning length of the simple harmonic wave scanning signal;

[0064] A simple harmonic wave scanning signal quantity determination module 804 is used to determine the minimum number of orthogonal excitation signals required to meet the target accuracy of the extracted response according to the orthogonal design frequency band of the simple harmonic wave scanning signal and the Hooke equation, and determine the minimum number of orthogonal excitation signals as the minimum number of simple harmonic wave scanning signals in the orthogonal simple harmonic wave scanning matrix;

[0065] The orthogonal harmonic wave scanning matrix determination module 805 is used to determine the orthogonal harmonic wave scanning matrix according to the minimum number of harmonic wave scanning signals, the frequency range, the orthogonal design frequency band and the scanning length.

[0066] In one embodiment, an observation value determination module is further included, which is specifically used to:

[0067] During the excitation test, the observation value received by the sensor is determined based on the excitation signal.

[0068] In one embodiment, the observed value is calculated according to the following formula:

[0069] f(t)=ξ(τ)*r×e μt +n;

[0070] Where f(t) is the observation value received by the sensor, ξ(τ) is the excitation signal, r is the wave impedance, and e μt It is the comprehensive response of the geological body including spherical diffusion. It is a nonlinear attenuation term. μ is the spatial variable, t is the response time, and n is the environmental noise.

[0071] In one embodiment, the orthogonal harmonic wave scanning matrix determination module 805 is further used to:

[0072] In the frequency range of the simple harmonic wave scanning signal, simple harmonic wave scanning signals of different frequencies without multiple relationship are selected to determine an orthogonal simple harmonic wave scanning matrix.

[0073] In one embodiment, the simple harmonic wave scanning signal quantity determination module 804 is specifically used to:

[0074] The simple harmonic scanning signal with orthogonal frequency band is used to deconvolve and stack the seismic data of the same path;

[0075] The deconvolution and stacking results are compared with the seismic data, and the minimum number of orthogonal excitation signals required to meet the target accuracy of the extracted response is determined based on the comparison results and the Hooke equation.

[0076] In one embodiment, a simple harmonic wave series connection module is further included, which is specifically used for:

[0077] Connect multiple simple harmonic waves in series and complete the scanning of multiple simple harmonic waves in one scan.

[0078] An embodiment of the present invention further provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned method for determining the scanning matrix when executing the computer program.

[0079] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for determining the scanning matrix is ​​implemented.

[0080] An embodiment of the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the method for determining the scanning matrix is ​​implemented.

[0081] In the embodiment of the present invention, an excitation test is performed on a harmonic wave of the same scanning length within the stable output frequency band of the controllable vibrator, and the frequency band with the highest signal-to-noise ratio is determined as the orthogonal design frequency band of the harmonic wave scanning signal according to the test result; an excitation test is performed on a harmonic wave of different scanning lengths according to the orthogonal design frequency band of the harmonic wave scanning signal, and the similarity and signal-to-noise ratio between the observation value received by the sensor and the scanning signal are determined according to the test result, and the scanning length corresponding to the observation value with the highest similarity to the scanning signal and the highest signal-to-noise ratio is selected and determined as the scanning length of the harmonic wave scanning signal; and the scanning length corresponding to the harmonic wave scanning signal is determined according to the orthogonal design frequency band of the harmonic wave scanning signal. The orthogonal design frequency band and scanning length of the simple harmonic scanning signal are used to determine the frequency range of the simple harmonic scanning signal; the minimum number of orthogonal excitation signals required to meet the target accuracy of the extracted response is determined according to the orthogonal design frequency band of the simple harmonic scanning signal and the Hooke's equation, and the minimum number of orthogonal excitation signals is determined as the minimum number of simple harmonic scanning signals in the orthogonal simple harmonic scanning matrix; according to the minimum number, frequency range, orthogonal design frequency band and scanning length of the simple harmonic scanning signal, the orthogonal simple harmonic scanning matrix is ​​accurately determined to improve the reliability of the inversion geological information extraction and ensure the authenticity of the geological information in seismic exploration.

[0082] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0083] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0084] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0085] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0086] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for determining a scanning matrix, characterized in that: include: Within the stable output frequency band of the controllable vibrator, a simple harmonic wave with the same scanning length is tested for excitation, and the frequency band with the highest signal-to-noise ratio is determined as the orthogonal design frequency band of the simple harmonic wave scanning signal according to the test results; According to the orthogonal design frequency band of the simple harmonic wave scanning signal, the simple harmonic wave with different scanning lengths is excited and tested, and the similarity and signal-to-noise ratio between the observation value received by the sensor and the scanning signal are determined according to the test results, and the scanning length corresponding to the observation value with the highest similarity to the scanning signal and the highest signal-to-noise ratio is selected to be determined as the scanning length of the simple harmonic wave scanning signal; Determine the frequency range of the simple harmonic wave scanning signal according to the orthogonal design frequency band and scanning length of the simple harmonic wave scanning signal; Determine the minimum number of orthogonal excitation signals required to meet the target accuracy of the extracted response according to the orthogonal design frequency band of the simple harmonic wave scanning signal and the Hooke equation, and determine the minimum number of orthogonal excitation signals as the minimum number of simple harmonic wave scanning signals in the orthogonal simple harmonic wave scanning matrix; The orthogonal simple harmonic wave scanning matrix is ​​determined according to the minimum number of simple harmonic wave scanning signals, the frequency range, the orthogonal design frequency band and the scanning length.

2. The method according to claim 1, characterized in that Also includes: During the excitation test, the observation value received by the sensor is determined based on the excitation signal.

3. The method according to claim 2, characterized in that The observed value is calculated according to the following formula: f(t)=ξ(τ)*r×e μt +n; Where f(t) is the observation value received by the sensor, ξ(τ) is the excitation signal, r is the wave impedance, and e μt It is the comprehensive response of the geological body including spherical diffusion. It is a nonlinear attenuation term. μ is the spatial variable, t is the response time, and n is the environmental noise.

4. The method according to claim 1, characterized in that According to the orthogonal design frequency band of the simple harmonic sweep signal and the Hooke equation, the minimum number of orthogonal excitation signals required to meet the target accuracy of the extracted response is determined, including: The simple harmonic scanning signal with orthogonal frequency band is used to deconvolve and stack the seismic data of the same path; The deconvolution and stacking results are compared with the seismic data, and the minimum number of orthogonal excitation signals required to meet the target accuracy of the extracted response is determined based on the comparison results and the Hooke equation.

5. The method according to claim 1, characterized in that Determine the orthogonal simple harmonic wave scanning matrix, including: In the frequency range of the simple harmonic wave scanning signal, simple harmonic wave scanning signals of different frequencies without multiple relationship are selected to determine an orthogonal simple harmonic wave scanning matrix.

6. The method according to claim 1, characterized in that After determining the orthogonal harmonic wave scanning matrix according to the minimum number of simple harmonic wave scanning signals, frequency range, orthogonal design frequency band and scanning length, it also includes: Connect multiple simple harmonic waves in series and complete the scanning of multiple simple harmonic waves in one scan.

7. A device for determining a scanning matrix, characterized in that: include: A simple harmonic wave scanning signal orthogonal design frequency band determination module is used to perform excitation tests on simple harmonic waves of the same scanning length within the stable output frequency band of the controllable vibrator, and determine the frequency band with the highest signal-to-noise ratio as the orthogonal design frequency band of the simple harmonic wave scanning signal according to the test results; A simple harmonic wave scanning signal scanning length determination module is used to perform excitation tests on simple harmonic waves of different scanning lengths according to the orthogonal design frequency band of the simple harmonic wave scanning signal, determine the similarity and signal-to-noise ratio between the observation value received by the sensor and the scanning signal according to the test results, select the scanning length corresponding to the observation value with the highest similarity to the scanning signal and the highest signal-to-noise ratio, and determine it as the scanning length of the simple harmonic wave scanning signal; A simple harmonic wave scanning signal frequency range determination module is used to determine the frequency range of the simple harmonic wave scanning signal according to the orthogonal design frequency band and scanning length of the simple harmonic wave scanning signal; A simple harmonic wave scanning signal quantity determination module is used to determine the minimum number of orthogonal excitation signals required to meet the target accuracy of the extracted response according to the orthogonal design frequency band of the simple harmonic wave scanning signal and the Hooke equation, and determine the minimum number of orthogonal excitation signals as the minimum number of simple harmonic wave scanning signals in the orthogonal simple harmonic wave scanning matrix; The orthogonal simple harmonic wave scanning matrix determination module is used to determine the orthogonal simple harmonic wave scanning matrix according to the minimum number of simple harmonic wave scanning signals, the frequency range, the orthogonal design frequency band and the scanning length.

8. The device according to claim 7, characterized in that It also includes an observation value determination module, which is specifically used to: During the excitation test, the observation value received by the sensor is determined based on the excitation signal.

9. The device according to claim 8, characterized in that The observed value is calculated according to the following formula: f(t)=ξ(τ)*r×e μt +n; Where f(t) is the observation value received by the sensor, ξ(τ) is the excitation signal, r is the wave impedance, and e μt It is the comprehensive response of the geological body including spherical diffusion. It is a nonlinear attenuation term. μ is the spatial variable, t is the response time, and n is the environmental noise.

10. The device according to claim 7, characterized in that The simple harmonic wave scanning signal quantity determination module is specifically used for: The simple harmonic scanning signal with orthogonal frequency band is used to deconvolve and stack the seismic data of the same path; The deconvolution and stacking results are compared with the seismic data, and the minimum number of orthogonal excitation signals required to meet the target accuracy of the extracted response is determined based on the comparison results and the Hooke equation.

11. The device according to claim 7, characterized in that The orthogonal simple harmonic wave scanning matrix determination module is also used for: In the frequency range of the simple harmonic wave scanning signal, simple harmonic wave scanning signals of different frequencies without multiple relationship are selected to determine an orthogonal simple harmonic wave scanning matrix.

12. The device according to claim 7, characterized in that It also includes a simple harmonic series connection module, which is specifically used for: Connect multiple simple harmonic waves in series and complete the scanning of multiple simple harmonic waves in one scan.

13. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 6 is implemented.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

15. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

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