Electromagnetic pulse excitation source voltage waveform inversion method, device, equipment and medium
By acquiring and using the transfer function and measured electric field waveform under the target environmental conditions for spectrum conversion and inversion, the high cost and high risk of measuring the voltage waveform of electromagnetic pulse excitation source is solved, and the safety of the voltage waveform of electromagnetic pulse excitation source is achieved. Efficient measurement.
Patent Information
- Application Number
- CN202411532551.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-01-10
AI Technical Summary
In the prior art, measuring the voltage waveform of the electromagnetic pulse excitation source has high cost and high risks, and it is difficult to effectively reduce it.
By obtaining the transfer function and measured electric field waveform under the target environmental conditions, spectrum conversion and inversion are performed, and the voltage waveform of the electromagnetic pulse excitation source is calculated to reduce measurement costs and risks.
The electromagnetic pulse excitation source voltage waveform inversion based on the measured electric field waveform is realized, which reduces measurement costs and risks, and improves measurement safety and efficiency.
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Figure CN119291255A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of electromagnetic pulses, and in particular to an inversion method, device, equipment and medium for an electromagnetic pulse excitation source voltage waveform. Background Art
[0002] An electromagnetic pulse excitation source is an energy source used to generate electromagnetic pulses, which can generate sudden, broadband electromagnetic radiation, high-intensity pulses. The electric field characteristic wave of the electromagnetic pulse is a double exponential pulse, which has a strong destructive power on electronic equipment and electronic systems.
[0003] In the prior art, the voltage waveform of the electromagnetic pulse excitation source is usually measured by test equipment during the test. However, the excitation voltage of the electromagnetic pulse excitation source is generally as high as several hundred kilovolts, and some even reach megavolts, resulting in high cost and high risk when measuring the voltage waveform of the electromagnetic pulse excitation source. Summary of the invention
[0004] In view of this, the purpose of the present application is to provide an inversion method, device, equipment and medium for the electromagnetic pulse excitation source voltage waveform, which can invert the electromagnetic pulse excitation source voltage waveform based on the measured electric field waveform, thereby reducing the measurement cost and measurement risk of the electromagnetic pulse excitation source voltage waveform.
[0005] In a first aspect, an embodiment of the present application provides a method for inverting a voltage waveform of an electromagnetic pulse excitation source, the method comprising:
[0006] Obtain the target transfer function corresponding to the target environmental condition of the actual monitoring point in the target monitoring area and the measured electric field waveform at the actual monitoring point; each environmental condition corresponds to a transfer function; the transfer function is used to describe the relationship between the electric field waveform at the actual monitoring point and the voltage waveform of the electromagnetic pulse excitation source;
[0007] Performing spectrum conversion on the measured electric field waveform at the actual monitoring point to obtain the spectrum corresponding to the measured electric field waveform;
[0008] According to the frequency spectrum and target transfer function corresponding to the measured electric field waveform, the voltage waveform of the electromagnetic pulse excitation source in the target monitoring area is inverted.
[0009] In a possible implementation manner, the transfer function corresponding to each environmental condition is obtained through the following steps;
[0010] Establishing a simulation model including simulation monitoring points and simulation electromagnetic pulse excitation sources;
[0011] The simulation model is simulated under various environmental conditions to obtain the simulated electric field waveform and the simulated electromagnetic pulse excitation source voltage waveform corresponding to the simulated monitoring point under various environmental conditions;
[0012] According to the simulated electric field waveform and the simulated electromagnetic pulse excitation source voltage waveform corresponding to the simulated monitoring point under each environmental condition, the transfer function corresponding to each environmental condition is calculated.
[0013] In a possible implementation manner, the measured electric field waveform at the actual monitoring point is obtained by the following steps:
[0014] Obtaining an initial measured electric field waveform measured at an actual monitoring point;
[0015] According to the difference between the peak time in the initial measured electric field waveform and the peak time in the target simulated electric field waveform obtained by simulation under the target environmental conditions, the initial measured electric field waveform is shifted; the peak time of the initial measured electric field waveform after the shift is the same as the peak time in the target simulated electric field waveform;
[0016] The initial measured electric field waveform obtained after the first translation is trimmed to obtain an intermediate measured electric field waveform; the time length of the intermediate measured electric field waveform is the same as the time length of the target simulated electric field waveform;
[0017] Calculate the mutual correlation coefficient between the intermediate measured electric field waveform and the target simulated electric field waveform at each translation time;
[0018] The intermediate measured electric field waveform is translated according to the translation time length with the largest mutual correlation coefficient, so that the electric field response time between the intermediate measured electric field waveform and the target simulated electric field waveform is exactly the same.
[0019] In a possible implementation, inverting the voltage waveform of the electromagnetic pulse excitation source in the target monitoring area according to the spectrum and the target transfer function corresponding to the measured electric field waveform includes:
[0020] Calculate the initial electromagnetic pulse excitation source voltage waveform at each actual monitoring point according to the frequency spectrum and target transfer function corresponding to the measured electric field waveform at each actual monitoring point;
[0021] According to the initial electromagnetic pulse excitation source voltage waveforms at all actual monitoring points, the target electromagnetic pulse excitation source voltage waveform of the target monitoring area is calculated.
[0022] In a possible implementation, the initial electromagnetic pulse excitation source voltage waveform at each actual monitoring point is calculated according to the frequency spectrum and target transfer function corresponding to the measured electric field waveform at each actual monitoring point, including:
[0023] Substitute the frequency spectrum and target transfer function corresponding to the measured electric field waveform at each actual monitoring point into the following formula to perform frequency domain inversion, and obtain the voltage spectrum of the electromagnetic pulse excitation source at each actual monitoring point;
[0024]
[0025] Among them, S(f) is the voltage spectrum of the electromagnetic pulse excitation source, E(f) is the spectrum corresponding to the measured electric field waveform, H(f) is the target transfer function, and f is the frequency;
[0026] The voltage spectrum of the electromagnetic pulse excitation source is inverted in the time domain by inverse Fourier transform to obtain the initial electromagnetic pulse excitation source voltage waveform.
[0027] In a possible implementation, calculating the electromagnetic pulse excitation source voltage waveform of the target monitoring area according to the initial electromagnetic pulse excitation source voltage waveform at all actual monitoring points includes:
[0028] The average value of the initial electromagnetic pulse excitation source voltage waveforms at all actual monitoring points is determined as the target electromagnetic pulse excitation source voltage waveform of the target monitoring area.
[0029] In a second aspect, an embodiment of the present application further provides an inversion device for an electromagnetic pulse excitation source voltage waveform, the device comprising:
[0030] An acquisition module is used to acquire the target transfer function corresponding to the target environmental condition of the actual monitoring point in the target monitoring area and the measured electric field waveform at the actual monitoring point; each environmental condition corresponds to a transfer function; the transfer function is used to describe the relationship between the electric field waveform at the actual monitoring point and the voltage waveform of the electromagnetic pulse excitation source;
[0031] A spectrum conversion module is used to perform spectrum conversion on the measured electric field waveform at the actual monitoring point to obtain a spectrum corresponding to the measured electric field waveform;
[0032] The inversion module is used to invert the voltage waveform of the electromagnetic pulse excitation source in the target monitoring area according to the frequency spectrum and target transfer function corresponding to the measured electric field waveform.
[0033] In one possible implementation, the acquisition module is specifically used to establish a simulation model including a simulation monitoring point and a simulation electromagnetic pulse excitation source; simulate the simulation model under various environmental conditions to obtain the simulated electric field waveform and the simulated electromagnetic pulse excitation source voltage waveform corresponding to the simulation monitoring point under various environmental conditions; calculate the corresponding transfer function under each environmental condition based on the simulated electric field waveform and the simulated electromagnetic pulse excitation source voltage waveform corresponding to the simulation monitoring point under various environmental conditions.
[0034] In one possible implementation, an acquisition module is specifically used to acquire an initial measured electric field waveform measured at an actual monitoring point; the initial measured electric field waveform is shifted according to the difference between the peak time in the initial measured electric field waveform and the peak time in the target simulated electric field waveform obtained under target environmental conditions; the peak time of the initial measured electric field waveform after the shift is the same as the peak time in the target simulated electric field waveform; the initial measured electric field waveform obtained after the first shift is trimmed to obtain an intermediate measured electric field waveform; the time length of the intermediate measured electric field waveform is the same as the time length of the target simulated electric field waveform; the mutual correlation coefficient between the intermediate measured electric field waveform and the target simulated electric field waveform at each shift time is calculated; the intermediate measured electric field waveform is shifted according to the shift time with the largest mutual correlation coefficient so that the electric field response time between the intermediate measured electric field waveform and the target simulated electric field waveform is exactly the same.
[0035] In one possible implementation, the inversion module is specifically used to calculate the initial electromagnetic pulse excitation source voltage waveform at each actual monitoring point based on the frequency spectrum and target transfer function corresponding to the measured electric field waveform at each actual monitoring point; and calculate the target electromagnetic pulse excitation source voltage waveform of the target monitoring area based on the initial electromagnetic pulse excitation source voltage waveform at all actual monitoring points.
[0036] In a possible implementation, the inversion module is specifically used to substitute the frequency spectrum and target transfer function corresponding to the measured electric field waveform at each actual monitoring point into the following formula to perform frequency domain inversion to obtain the voltage spectrum of the electromagnetic pulse excitation source at each actual monitoring point; Among them, S(f) is the voltage spectrum of the electromagnetic pulse excitation source, E(f) is the spectrum corresponding to the measured electric field waveform, H(f) is the target transfer function, and f is the frequency. The voltage spectrum of the electromagnetic pulse excitation source is inverted in the time domain by inverse Fourier transform to obtain the initial electromagnetic pulse excitation source voltage waveform.
[0037] In a possible implementation, the inversion module is specifically configured to determine an average value of the initial electromagnetic pulse excitation source voltage waveforms at all actual monitoring points as a target electromagnetic pulse excitation source voltage waveform for the target monitoring area.
[0038] In a third aspect, an embodiment of the present application further provides an electronic device, comprising: a processor, a storage medium and a bus, wherein the storage medium stores machine-readable instructions executable by the processor. When the electronic device is running, the processor and the storage medium communicate via the bus, and the processor executes the machine-readable instructions to perform the steps of the inversion method of the electromagnetic pulse excitation source voltage waveform as described in any one of the first aspects.
[0039] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps of the method for inverting the voltage waveform of an electromagnetic pulse excitation source as described in any one of the first aspects are executed.
[0040] The embodiment of the present application provides an inversion method, device, equipment and medium for the voltage waveform of an electromagnetic pulse excitation source, the method comprising: obtaining a target transfer function corresponding to the target environmental conditions of the actual monitoring point in the target monitoring area and a measured electric field waveform at the actual monitoring point; each environmental condition corresponds to a transfer function; the transfer function is used to describe the relationship between the electric field waveform at the actual monitoring point and the voltage waveform of the electromagnetic pulse excitation source; performing spectrum conversion on the measured electric field waveform at the actual monitoring point to obtain a spectrum corresponding to the measured electric field waveform; inverting the voltage waveform of the electromagnetic pulse excitation source in the target monitoring area according to the spectrum corresponding to the measured electric field waveform and the target transfer function. Through the present application, the voltage waveform of the electromagnetic pulse excitation source can be inverted based on the measured electric field waveform, reducing the measurement cost and measurement risk of the voltage waveform of the electromagnetic pulse excitation source. BRIEF DESCRIPTION OF THE DRAWINGS
[0041] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0042] Figure 1 A flow chart of an inversion method of an electromagnetic pulse excitation source voltage waveform provided in an embodiment of the present application is shown;
[0043] Figure 2 A flow chart showing another method for inverting a voltage waveform of an electromagnetic pulse excitation source provided in an embodiment of the present application is shown;
[0044] Figure 3 A schematic structural diagram of an inversion device for an electromagnetic pulse excitation source voltage waveform provided in an embodiment of the present application is shown;
[0045] Figure 4 A schematic structural diagram of an electronic device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION
[0046] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the drawings in the present application only serve the purpose of explanation and description and are not used to limit the scope of protection of the present application. In addition, it should be understood that the schematic drawings are not drawn in real proportion. The flowchart used in this application shows the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowchart can be implemented out of sequence, and the steps without logical context can be reversed in order or implemented simultaneously. In addition, those skilled in the art can add one or more other operations to the flowchart under the guidance of the content of the present application, or remove one or more operations from the flowchart.
[0047] In addition, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.
[0048] In order to enable those skilled in the art to use the content of this application, the following implementation is provided in conjunction with a specific application scenario "electromagnetic pulse field". For those skilled in the art, the general principles defined herein can be applied to other embodiments and application scenarios without departing from the spirit and scope of this application. Although this application is mainly described around the "electromagnetic pulse field", it should be understood that this is only an exemplary embodiment.
[0049] It should be noted that the term "comprising" will be used in the embodiments of the present application to indicate the existence of the features declared thereafter, but does not exclude the addition of other features.
[0050] The following is a detailed description of a method for inverting a voltage waveform of an electromagnetic pulse excitation source provided in an embodiment of the present application.
[0051] Reference Figure 1 FIG. 1 is a flow chart of an inversion method for an electromagnetic pulse excitation source voltage waveform provided in an embodiment of the present application. The specific execution process of the inversion method for the electromagnetic pulse excitation source voltage waveform is as follows:
[0052] S101, obtaining a target transfer function corresponding to a target environmental condition at an actual monitoring point in a target monitoring area and a measured electric field waveform at the actual monitoring point.
[0053] S102 , performing spectrum conversion on the electric field waveform measured at the actual monitoring point to obtain a spectrum corresponding to the electric field waveform measured.
[0054] S103, inverting the voltage waveform of the electromagnetic pulse excitation source in the target monitoring area according to the frequency spectrum and target transfer function corresponding to the measured electric field waveform.
[0055] The embodiment of the present application provides an inversion method for the voltage waveform of an electromagnetic pulse excitation source, the method comprising: obtaining a target transfer function corresponding to the target environmental conditions of the actual monitoring point in the target monitoring area and a measured electric field waveform at the actual monitoring point; each environmental condition corresponds to a transfer function; the transfer function is used to describe the relationship between the electric field waveform at the actual monitoring point and the voltage waveform of the electromagnetic pulse excitation source; performing spectrum conversion on the measured electric field waveform at the actual monitoring point to obtain a spectrum corresponding to the measured electric field waveform; inverting the voltage waveform of the electromagnetic pulse excitation source in the target monitoring area according to the spectrum corresponding to the measured electric field waveform and the target transfer function. Through the present application, the voltage waveform of the electromagnetic pulse excitation source can be inverted based on the measured electric field waveform, reducing the measurement cost and measurement risk of the voltage waveform of the electromagnetic pulse excitation source.
[0056] The following is a description of the exemplary steps of the present application embodiment:
[0057] S101, obtaining a target transfer function corresponding to a target environmental condition at an actual monitoring point in a target monitoring area and a measured electric field waveform at the actual monitoring point.
[0058] In the implementation manner of the present application, the target monitoring area refers to the area where the voltage waveform of the electromagnetic pulse excitation source needs to be inverted. The target monitoring area may include one or more actual monitoring points. Environmental conditions include ground material types (soil, cement, etc.) and surrounding large metals. The environmental conditions in which each actual monitoring point is located are the target environmental conditions, which refer to the ground material types (soil, cement, etc.) and surrounding large metals of each actual monitoring point. The surrounding large metals of each actual monitoring point can be regarded as metals whose volume exceeds the preset volume within the preset range of the actual monitoring point. There is a transfer function corresponding to each environmental condition; the transfer function is used to describe the relationship between the electric field waveform at the actual monitoring point and the voltage waveform of the electromagnetic pulse excitation source. The transfer function corresponding to the target environmental condition of the actual monitoring point is the target transfer function.
[0059] The measured electric field waveform at the actual monitoring point refers to a graphical representation of the change of the electric field strength over time, which reflects the electric field strength value at the actual monitoring point at a specific time.
[0060] Further, the corresponding transfer function under each environmental condition is obtained through the following steps;
[0061] Step 1: Establish a simulation model including simulation monitoring points and simulation electromagnetic pulse excitation sources.
[0062] In an embodiment of the present application, in response to a transfer function acquisition request initiated by a user in an acquisition simulation interface, a simulation model including simulation monitoring points and a simulation electromagnetic pulse excitation source is established using CST simulation software; the simulation electromagnetic pulse excitation source is a double exponential pulse waveform.
[0063] Here, the user can check the option of automatically calculating the transfer function "Normalize to reference signal [always normalized if default signal is used]" in the acquisition simulation interface to initiate a transfer function acquisition request.
[0064] Step 2: Simulate the simulation model under various environmental conditions to obtain the simulated electric field waveform and the simulated electromagnetic pulse excitation source voltage waveform corresponding to the simulated monitoring point under various environmental conditions.
[0065] In the implementation manner of the present application, a time domain solver is used to simulate the simulation model under various environmental conditions at a preset simulation frequency to obtain the simulated electric field waveform and the simulated electromagnetic pulse excitation source voltage waveform corresponding to the simulation monitoring point under various environmental conditions.
[0066] Among them, the preset simulation frequency is recommended to be set to 500MHz, and users can adjust it according to actual conditions.
[0067] Step 3: Calculate the transfer function corresponding to each environmental condition according to the simulated electric field waveform and the simulated electromagnetic pulse excitation source voltage waveform corresponding to the simulated monitoring point under each environmental condition.
[0068] In the implementation manner of the present application, the simulated electric field waveform and the simulated electromagnetic pulse excitation source voltage waveform corresponding to the simulated monitoring point under various environmental conditions are substituted into the following formula to calculate the corresponding transfer function under various environmental conditions:
[0069]
[0070] Among them, H(f) is the transfer function corresponding to each environmental condition, E s (f) is the spectrum corresponding to the simulated electric field waveform of the simulated monitoring point under various environmental conditions, V s (f) is the frequency spectrum corresponding to the simulated electromagnetic pulse excitation source voltage waveform of the simulated monitoring point under various environmental conditions, and f is the frequency.
[0071] Furthermore, the measured electric field waveform at the actual monitoring point is obtained by the following steps:
[0072] Step 1: Obtain the initial measured electric field waveform measured at the actual monitoring point.
[0073] In the implementation manner of the present application, the initial measured electric field waveform is directly measured by a measuring device at an actual monitoring point.
[0074] Step 2: Shift the initial measured electric field waveform according to the difference between the peak time in the initial measured electric field waveform and the peak time in the target simulated electric field waveform simulated under the target environmental conditions; the peak time of the initial measured electric field waveform after the shift is the same as the peak time in the target simulated electric field waveform.
[0075] In the implementation mode of the present application, the simulated electric field waveform obtained by simulation under the target environmental conditions is used as the target simulated electric field waveform. The peak time in the initial measured electric field waveform is subtracted from the peak time in the target simulated electric field waveform to obtain a difference; if the difference is a positive number, the initial measured electric field waveform is shifted to the left by a time length corresponding to the difference; if the difference is a negative number, the initial measured electric field waveform is shifted to the right by a time length corresponding to the difference.
[0076] For example, if the difference is 3ns, the initial measured electric field waveform is shifted to the left by 3ns.
[0077] Step three: trim the initial measured electric field waveform obtained after the first translation to obtain an intermediate measured electric field waveform; the time length of the intermediate measured electric field waveform is the same as the time length of the target simulated electric field waveform.
[0078] Step 4: Calculate the correlation coefficient between the intermediate measured electric field waveform and the target simulated electric field waveform at each translation time.
[0079] Specifically, for each translation duration, the intermediate measured electric field waveform and the target simulated electric field waveform are substituted into the following formula to obtain the mutual correlation coefficient under the translation duration:
[0080]
[0081] Among them, corr k is the cross-correlation coefficient under the translation time k, N is the number of time points in the intermediate measured electric field waveform a, 0≤k≤N, a i is the electric field value at the i-th time point in the intermediate measured electric field waveform a, b i is the electric field value at the i-th time point in the intermediate measured electric field waveform b, b i+k is the electric field value at the i+kth time point in the intermediate measured electric field waveform b.
[0082] Step 5: Shift the intermediate measured electric field waveform according to the shift time length with the largest mutual correlation coefficient, so that the electric field response time between the intermediate measured electric field waveform and the target simulated electric field waveform is exactly the same.
[0083] Here, by clipping and translating, the target measured electric field waveform can be made to have the same time length and electric field response time as the target simulated electric field waveform simulated under the target environmental conditions, so that the electromagnetic pulse excitation source voltage waveform can be subsequently inverted through the target measured electric field waveform and the corresponding target transfer function under the target environmental conditions.
[0084] S102 , performing spectrum conversion on the electric field waveform measured at the actual monitoring point to obtain a spectrum corresponding to the electric field waveform measured.
[0085] In the implementation manner of the present application, the measured electric field waveform at the actual monitoring point is subjected to Fourier transformation and low-pass filtering in sequence to obtain a frequency spectrum corresponding to the measured electric field waveform.
[0086] The low-pass rate processing is achieved by setting the width of the spectrum of the measured electric field waveform; the width of the spectrum of the measured electric field waveform can be set to 200 MHz.
[0087] S103, inverting the voltage waveform of the electromagnetic pulse excitation source in the target monitoring area according to the frequency spectrum and target transfer function corresponding to the measured electric field waveform.
[0088] The voltage waveform of the electromagnetic pulse excitation source in the target monitoring area is inverted through the following steps:
[0089] Step 1: Calculate the initial electromagnetic pulse excitation source voltage waveform at each actual monitoring point according to the frequency spectrum and target transfer function corresponding to the measured electric field waveform at each actual monitoring point.
[0090] a. Substitute the frequency spectrum and target transfer function corresponding to the measured electric field waveform at each actual monitoring point into the following formula to perform frequency domain inversion to obtain the voltage spectrum of the electromagnetic pulse excitation source at each actual monitoring point:
[0091]
[0092] Among them, S(f) is the voltage spectrum of the electromagnetic pulse excitation source, E(f) is the spectrum corresponding to the measured electric field waveform, H(f) is the target transfer function, and f is the frequency.
[0093] b. Perform time domain inversion on the electromagnetic pulse excitation source voltage spectrum through inverse Fourier transform to obtain the initial electromagnetic pulse excitation source voltage waveform.
[0094] Step 2: If the target monitoring area includes multiple actual monitoring points, the target electromagnetic pulse excitation source voltage waveform of the target monitoring area is calculated based on the initial electromagnetic pulse excitation source voltage waveforms at all actual monitoring points.
[0095] In the implementation manner of the present application, the average value of the initial electromagnetic pulse excitation source voltage waveform at all actual monitoring points is determined as the target electromagnetic pulse excitation source voltage waveform of the target monitoring area. Alternatively, the initial electromagnetic pulse excitation source voltage waveform at all actual monitoring points is weighted averaged to obtain the target electromagnetic pulse excitation source voltage waveform of the target monitoring area.
[0096] Step three: if the target monitoring area includes an actual monitoring point, the initial electromagnetic pulse excitation source voltage waveform at the actual monitoring point is determined as the target electromagnetic pulse excitation source voltage waveform of the target monitoring area.
[0097] Reference Figure 2 As shown, it is a flow chart of another method for inverting the voltage waveform of an electromagnetic pulse excitation source provided in an embodiment of the present application. The exemplary steps of the embodiment of the present application are described below:
[0098] S201, obtaining an initial measured electric field waveform measured at an actual monitoring point.
[0099] S202 , shifting the initial measured electric field waveform according to the difference between the peak time in the initial measured electric field waveform and the peak time in the target simulated electric field waveform obtained by simulation under target environmental conditions.
[0100] The peak time of the initial measured electric field waveform after translation is the same as the peak time in the target simulated electric field waveform.
[0101] S203 , trimming the initial measured electric field waveform obtained after the first translation to obtain an intermediate measured electric field waveform.
[0102] The time length of the intermediate measured electric field waveform is the same as the time length of the target simulated electric field waveform.
[0103] S204, calculating the correlation coefficient between the intermediate measured electric field waveform and the target simulated electric field waveform at each translation time length.
[0104] S205 , shifting the intermediate measured electric field waveform according to the shift time length with the largest mutual correlation coefficient, so that the electric field response time between the intermediate measured electric field waveform and the target simulated electric field waveform is exactly the same.
[0105] Here, an embodiment of the present application provides another method for inverting the voltage waveform of an electromagnetic pulse excitation source, which makes the target measured electric field waveform and the target simulated electric field waveform simulated under target environmental conditions have the same time length and electric field response time through trimming and translation, so that the electromagnetic pulse excitation source voltage waveform can be subsequently inverted through the target measured electric field waveform and the corresponding target transfer function under target environmental conditions.
[0106] Based on the same inventive concept, an inversion device for the electromagnetic pulse excitation source voltage waveform corresponding to the inversion method for the electromagnetic pulse excitation source voltage waveform is also provided in the embodiment of the present application. Since the principle of solving the problem by the device in the embodiment of the present application is similar to the inversion method for the electromagnetic pulse excitation source voltage waveform in the embodiment of the present application, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.
[0107] Reference Figure 3 FIG. 1 is a schematic diagram of an inversion device for an electromagnetic pulse excitation source voltage waveform provided in an embodiment of the present application, the device comprising:
[0108] The acquisition module 301 is used to obtain the target transfer function corresponding to the target environmental condition of the actual monitoring point in the target monitoring area and the measured electric field waveform at the actual monitoring point; each environmental condition corresponds to a transfer function; the transfer function is used to describe the relationship between the electric field waveform at the actual monitoring point and the voltage waveform of the electromagnetic pulse excitation source;
[0109] The spectrum conversion module 302 is used to perform spectrum conversion on the measured electric field waveform at the actual monitoring point to obtain the spectrum corresponding to the measured electric field waveform;
[0110] The inversion module 303 is used to invert the voltage waveform of the electromagnetic pulse excitation source in the target monitoring area according to the frequency spectrum and the target transfer function corresponding to the measured electric field waveform.
[0111] In one possible implementation, the acquisition module 301 is specifically used to establish a simulation model including a simulation monitoring point and a simulation electromagnetic pulse excitation source; simulate the simulation model under various environmental conditions to obtain the simulated electric field waveform and the simulated electromagnetic pulse excitation source voltage waveform corresponding to the simulation monitoring point under various environmental conditions; calculate the corresponding transfer function under each environmental condition based on the simulated electric field waveform and the simulated electromagnetic pulse excitation source voltage waveform corresponding to the simulation monitoring point under various environmental conditions.
[0112] In one possible implementation, the acquisition module 301 is specifically used to obtain an initial measured electric field waveform measured at an actual monitoring point; the initial measured electric field waveform is shifted according to the difference between the peak time in the initial measured electric field waveform and the peak time in the target simulated electric field waveform simulated under target environmental conditions; the peak time of the initial measured electric field waveform after the shift is the same as the peak time in the target simulated electric field waveform; the initial measured electric field waveform obtained after the first shift is trimmed to obtain an intermediate measured electric field waveform; the time length of the intermediate measured electric field waveform is the same as the time length of the target simulated electric field waveform; the mutual correlation coefficient between the intermediate measured electric field waveform and the target simulated electric field waveform at each shift time is calculated; the intermediate measured electric field waveform is shifted according to the shift time with the largest mutual correlation coefficient so that the electric field response time between the intermediate measured electric field waveform and the target simulated electric field waveform is exactly the same.
[0113] In one possible implementation, the inversion module 303 is specifically used to calculate the initial electromagnetic pulse excitation source voltage waveform at each actual monitoring point based on the frequency spectrum and target transfer function corresponding to the measured electric field waveform at each actual monitoring point; and calculate the target electromagnetic pulse excitation source voltage waveform of the target monitoring area based on the initial electromagnetic pulse excitation source voltage waveform at all actual monitoring points.
[0114] In a possible implementation, the inversion module 303 is specifically used to substitute the frequency spectrum and target transfer function corresponding to the measured electric field waveform at each actual monitoring point into the following formula to perform frequency domain inversion to obtain the voltage spectrum of the electromagnetic pulse excitation source at each actual monitoring point; Among them, S(f) is the voltage spectrum of the electromagnetic pulse excitation source, E(f) is the spectrum corresponding to the measured electric field waveform, H(f) is the target transfer function, and f is the frequency. The voltage spectrum of the electromagnetic pulse excitation source is inverted in the time domain by inverse Fourier transform to obtain the initial electromagnetic pulse excitation source voltage waveform.
[0115] In a possible implementation, the inversion module 303 is specifically configured to determine the average value of the initial electromagnetic pulse excitation source voltage waveforms at all actual monitoring points as the target electromagnetic pulse excitation source voltage waveform of the target monitoring area.
[0116] The embodiment of the present application provides an inversion device for the voltage waveform of an electromagnetic pulse excitation source, and the device includes: an acquisition module 301, which is used to obtain the target transfer function corresponding to the target environmental conditions of the actual monitoring point in the target monitoring area and the measured electric field waveform at the actual monitoring point; each environmental condition corresponds to a transfer function; the transfer function is used to describe the relationship between the electric field waveform at the actual monitoring point and the voltage waveform of the electromagnetic pulse excitation source; a spectrum conversion module 302, which is used to perform spectrum conversion on the measured electric field waveform at the actual monitoring point to obtain the spectrum corresponding to the measured electric field waveform; an inversion module 303, which is used to invert the voltage waveform of the electromagnetic pulse excitation source in the target monitoring area according to the spectrum corresponding to the measured electric field waveform and the target transfer function. Through the present application, the voltage waveform of the electromagnetic pulse excitation source can be inverted based on the measured electric field waveform, thereby reducing the measurement cost and measurement risk of the voltage waveform of the electromagnetic pulse excitation source.
[0117] like Figure 4 As shown, an electronic device 400 provided in an embodiment of the present application includes: a processor 401, a memory 402 and a bus, the memory 402 stores machine-readable instructions executable by the processor 401, when the electronic device is running, the processor 401 and the memory 402 communicate through the bus, and the processor 401 executes the machine-readable instructions to perform the steps of the inversion method of the electromagnetic pulse excitation source voltage waveform as mentioned above.
[0118] Specifically, the memory 402 and the processor 401 can be general-purpose memories and processors, which are not specifically limited here. When the processor 401 runs the computer program stored in the memory 402, the inversion method of the voltage waveform of the electromagnetic pulse excitation source can be executed.
[0119] Corresponding to the above-mentioned electromagnetic pulse excitation source voltage waveform inversion method, an embodiment of the present application also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned electromagnetic pulse excitation source voltage waveform inversion method are executed.
[0120] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, the specific working process of the system and device described above can refer to the corresponding process in the method embodiment, and will not be repeated in this application. In the several embodiments provided in this application, it should be understood that the disclosed system, device and method can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation. For example, multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.
[0121] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
[0122] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
[0123] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the information processing method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard drives, ROM, RAM, magnetic disks, or optical disks.
[0124] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
Claims
1. A method for inverting a voltage waveform of an electromagnetic pulse excitation source, characterized in that: The method comprises: Obtaining a target transfer function corresponding to a target environmental condition at an actual monitoring point in a target monitoring area and a measured electric field waveform at the actual monitoring point; each environmental condition corresponds to a transfer function; the transfer function is used to describe the relationship between the electric field waveform at the actual monitoring point and the voltage waveform of the electromagnetic pulse excitation source; Performing spectrum conversion on the measured electric field waveform at the actual monitoring point to obtain a spectrum corresponding to the measured electric field waveform; The electromagnetic pulse excitation source voltage waveform of the target monitoring area is inverted according to the frequency spectrum corresponding to the measured electric field waveform and the target transfer function.
2. The method for inverting the voltage waveform of an electromagnetic pulse excitation source according to claim 1, characterized in that: The corresponding transfer function under each environmental condition is obtained through the following steps; Establishing a simulation model including simulation monitoring points and simulation electromagnetic pulse excitation sources; Simulating the simulation model under various environmental conditions to obtain the simulated electric field waveform and the simulated electromagnetic pulse excitation source voltage waveform corresponding to the simulated monitoring point under various environmental conditions; According to the simulated electric field waveform and the simulated electromagnetic pulse excitation source voltage waveform corresponding to the simulated monitoring point under each environmental condition, the transfer function corresponding to each environmental condition is calculated.
3. The inversion method of the electromagnetic pulse excitation source voltage waveform according to claim 2, characterized in that: The measured electric field waveform at the actual monitoring point is obtained by the following steps: Obtaining an initial measured electric field waveform measured at an actual monitoring point; According to the difference between the peak time in the initial measured electric field waveform and the peak time in the target simulated electric field waveform obtained by simulation under the target environmental conditions, the initial measured electric field waveform is shifted; the peak time of the initial measured electric field waveform after the shift is the same as the peak time in the target simulated electric field waveform; The initial measured electric field waveform obtained after the first translation is trimmed to obtain an intermediate measured electric field waveform; The time length of the intermediate measured electric field waveform is the same as the time length of the target simulated electric field waveform; Calculating the mutual correlation coefficient between the intermediate measured electric field waveform and the target simulated electric field waveform at each translation time length; The intermediate measured electric field waveform is shifted according to the shift time length with the maximum mutual correlation coefficient, so that the electric field response time between the intermediate measured electric field waveform and the target simulated electric field waveform is exactly the same.
4. The method for inverting the voltage waveform of an electromagnetic pulse excitation source according to claim 1, characterized in that: The inverting the electromagnetic pulse excitation source voltage waveform of the target monitoring area according to the frequency spectrum corresponding to the measured electric field waveform and the target transfer function includes: Calculating the initial electromagnetic pulse excitation source voltage waveform at each actual monitoring point according to the frequency spectrum corresponding to the measured electric field waveform at each actual monitoring point and the target transfer function; The target electromagnetic pulse excitation source voltage waveform of the target monitoring area is calculated according to the initial electromagnetic pulse excitation source voltage waveforms at all actual monitoring points.
5. The method for inverting the voltage waveform of an electromagnetic pulse excitation source according to claim 4, characterized in that: The calculating of the initial electromagnetic pulse excitation source voltage waveform at each actual monitoring point according to the frequency spectrum corresponding to the measured electric field waveform at each actual monitoring point and the target transfer function comprises: Substituting the frequency spectrum corresponding to the measured electric field waveform at each actual monitoring point and the target transfer function into the following formula to perform frequency domain inversion, thereby obtaining the voltage spectrum of the electromagnetic pulse excitation source at each actual monitoring point; Among them, S(f) is the voltage spectrum of the electromagnetic pulse excitation source, E(f) is the spectrum corresponding to the measured electric field waveform, H(f) is the target transfer function, and f is the frequency; The electromagnetic pulse excitation source voltage spectrum is subjected to time domain inversion through inverse Fourier transform to obtain an initial electromagnetic pulse excitation source voltage waveform.
6. The method for inverting the voltage waveform of an electromagnetic pulse excitation source according to claim 4, characterized in that: The step of calculating the electromagnetic pulse excitation source voltage waveform of the target monitoring area according to the initial electromagnetic pulse excitation source voltage waveforms at all actual monitoring points includes: The average value of the initial electromagnetic pulse excitation source voltage waveforms at all actual monitoring points is determined as the target electromagnetic pulse excitation source voltage waveform of the target monitoring area.
7. An inversion device for an electromagnetic pulse excitation source voltage waveform, characterized in that: The device comprises: An acquisition module is used to acquire a target transfer function corresponding to a target environmental condition at an actual monitoring point in a target monitoring area and a measured electric field waveform at the actual monitoring point; each environmental condition corresponds to a transfer function; the transfer function is used to describe the relationship between the electric field waveform at the actual monitoring point and the voltage waveform of the electromagnetic pulse excitation source; A spectrum conversion module, used to perform spectrum conversion on the measured electric field waveform at the actual monitoring point to obtain a spectrum corresponding to the measured electric field waveform; The inversion module is used to invert the voltage waveform of the electromagnetic pulse excitation source in the target monitoring area according to the frequency spectrum corresponding to the measured electric field waveform and the target transfer function.
8. The inversion device for the voltage waveform of the electromagnetic pulse excitation source according to claim 7, characterized in that: The acquisition module is specifically used for: Establishing a simulation model including simulation monitoring points and simulation electromagnetic pulse excitation sources; Simulating the simulation model under various environmental conditions to obtain the simulated electric field waveform and the simulated electromagnetic pulse excitation source voltage waveform corresponding to the simulated monitoring point under various environmental conditions; According to the simulated electric field waveform and the simulated electromagnetic pulse excitation source voltage waveform corresponding to the simulated monitoring point under each environmental condition, the transfer function corresponding to each environmental condition is calculated.
9. An electronic device, characterized in that: include: A processor, a storage medium and a bus, wherein the storage medium stores machine-readable instructions executable by the processor. When the electronic device is running, the processor and the storage medium communicate through the bus, and the processor executes the machine-readable instructions to perform the steps of the inversion method of the electromagnetic pulse excitation source voltage waveform as described in any one of claims 1 to 6.
10. 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 steps of the method for inverting the voltage waveform of an electromagnetic pulse excitation source as claimed in any one of claims 1 to 6 are executed.