Simulation modeling method and system for influence of aerosol environment on electromagnetic wave transmission

Abstract

This disclosure provides a simulation modeling method and system for the influence of aerosol environment on electromagnetic wave transmission, relating to the interdisciplinary field of electromagnetic wave propagation and environmental effects. The method includes: defining a basic electromagnetic wave simulation environment and setting boundary conditions; creating an aerosol propagation region based on the simulation environment and constructing an aerosol medium model; calculating equivalent material parameters based on effective medium theory, substituting the calculated equivalent material parameters into the material properties of the aerosol medium model to obtain the electromagnetic wave simulation model; setting an excitation source, using the excitation source to simulate incident electromagnetic waves onto the electromagnetic wave simulation model, setting an electromagnetic field monitor at the target frequency, and observing the three-dimensional field distribution of the electromagnetic waves in the aerosol medium; and analyzing the attenuation of the electromagnetic waves after passing through the aerosol medium based on the three-dimensional field distribution. This disclosure can quantitatively analyze the influence of particulate matter type, size distribution, and concentration on the transmittance of electromagnetic waves in a specific waveband.

Description

Technical Field

[0001] This disclosure relates to the interdisciplinary field of electromagnetic wave propagation and environmental effects, specifically to a simulation modeling method and system for the influence of aerosol environment on electromagnetic wave transmission. Background Technology

[0002] The statements in this section are merely background information relating to this disclosure and do not necessarily constitute prior art.

[0003] With the rapid development of wireless communication, radar detection, and remote sensing technologies, the reliability of electromagnetic wave propagation in complex atmospheric environments is crucial. Aerosols, especially those containing solid particles such as carbon-based particles, metals, and their compounds (e.g., industrial dust, fire smoke, sandstorms), significantly attenuate and scatter electromagnetic waves, leading to decreased communication signal quality, reduced radar detection range, and distortion of remote sensing images.

[0004] Existing solutions lack specialized electromagnetic models for aerosols composed of solid particles such as carbon-based, metals, and compounds under man-made or specific disaster environments (such as industrial emissions, fire smoke, and battlefield cover). Furthermore, traditional analytical methods cannot provide the three-dimensional spatial distribution of the electromagnetic field propagating in the aerosol medium, making it difficult to intuitively analyze changes in the field distribution. Summary of the Invention

[0005] To address the aforementioned issues, this disclosure proposes a simulation modeling method and system for the influence of aerosol environment on electromagnetic wave transmission. It establishes an aerosol environment containing solid suspended particles with complex components, constructs a generalized model that accurately characterizes the influence of various solid particles, wide particle size distribution, and concentration variations on electromagnetic wave transmission, and quantitatively analyzes its impact on electromagnetic wave transmission.

[0006] According to some embodiments, the present disclosure adopts the following technical solutions: A simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission, comprising: Define the basic electromagnetic wave simulation environment and set the boundary conditions; The propagation area of ​​aerosols is created based on a simulation environment, and an aerosol medium model is constructed. The equivalent material parameters are calculated based on the effective medium theory. The calculated equivalent material parameters are then substituted into the material properties of the aerosol medium model to obtain the electromagnetic wave simulation model. An excitation source is set up, and the electromagnetic waves incident on the electromagnetic wave simulation model are simulated using the excitation source. An electromagnetic field monitor is set up at the target frequency to observe the three-dimensional field distribution of the electromagnetic waves in the aerosol medium. Based on the three-dimensional field distribution, the attenuation of electromagnetic waves after passing through the aerosol medium is analyzed, and the influence of the aerosol environment on the transmission of electromagnetic waves is obtained.

[0007] According to some embodiments, the present disclosure adopts the following technical solutions: A simulation modeling system for the influence of aerosol environment on electromagnetic wave transmission, comprising: The simulation model building module is used to define the basic electromagnetic wave simulation environment and set boundary conditions; based on the simulation environment, the propagation region of aerosols is created, and an aerosol medium model is constructed; based on the effective medium theory, the equivalent material parameters are calculated, and the calculated equivalent material parameters are substituted into the material properties of the aerosol medium model to obtain the electromagnetic wave simulation model; The simulation module is used to set up an excitation source and use the excitation source to simulate the incident electromagnetic wave into the electromagnetic wave simulation model. An electromagnetic field monitor is set at the target frequency to observe the three-dimensional field distribution of the electromagnetic wave in the aerosol medium. Based on the three-dimensional field distribution, the attenuation of the electromagnetic wave after passing through the aerosol medium is analyzed to obtain the influence of the aerosol environment on the transmission of electromagnetic waves.

[0008] According to some embodiments, the present disclosure adopts the following technical solutions: A computer program product includes a computer program that, when executed by a processor, implements the simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission.

[0009] According to some embodiments, the present disclosure adopts the following technical solutions: A non-transitory computer-readable storage medium is provided for storing computer instructions, which, when executed by a processor, implement a simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission.

[0010] According to some embodiments, the present disclosure adopts the following technical solutions: An electronic device includes a processor, a memory, and a computer program; wherein the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device is running, the processor executes the computer program stored in the memory to enable the electronic device to perform a simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission.

[0011] Compared with the prior art, the beneficial effects of this disclosure are as follows: This disclosure presents a simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission. The method constructs the physical parameters of the aerosol; then, based on the effective medium theory, it calculates the equivalent complex permittivity of the aerosol mixture; subsequently, it establishes the propagation path in CST software and defines its material properties as the aforementioned equivalent parameters; by setting a plane wave excitation source and a monitor, it runs a full-wave electromagnetic simulation, ultimately accurately obtaining the transmittance and field distribution results of the electromagnetic wave. This disclosure solves the problem of insufficient accuracy of traditional empirical models, providing a standardized, quantifiable, and three-dimensionally visualized analysis method for systematically studying the influence of aerosols with different compositions, concentrations, and particle sizes on electromagnetic wave propagation.

[0012] This disclosure presents a simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission. Based on the CST StudioSuite simulation platform, it realizes the modeling and simulation of the influence of aerosol on electromagnetic wave transmission. It can accurately characterize the influence of various solid particles, wide particle size spectrum and concentration changes on electromagnetic wave transmission, and quantitatively analyze their influence on electromagnetic wave transmission. Users can easily simulate aerosol scenarios with different compositions (carbon-based, metal, etc.), different concentrations and different particle sizes by modifying material parameters, volume fraction (concentration) and geometric models.

[0013] This disclosure presents a simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission, providing a complete and repeatable standardized process from material definition to result analysis, which greatly improves simulation efficiency and the reliability of results. The simulation process is visualized in three dimensions, allowing for an intuitive display of the attenuation process and spatial distribution of the electromagnetic field in the aerosol medium. Attached Figure Description

[0014] The accompanying drawings, which form part of this disclosure, are used to provide a further understanding of this disclosure. The illustrative embodiments of this disclosure and their descriptions are used to explain this disclosure and do not constitute an undue limitation of this disclosure.

[0015] Figure 1 This is a flowchart of the simulation modeling process in CST Studio Suite according to an embodiment of the present disclosure; Figure 2 This is a schematic diagram of a simulation model established according to an embodiment of the present disclosure, showing the background space and the aerosol medium region (cubic prism).

[0016] Figure 3 The following is an example of simulation results from an embodiment of this disclosure, showing the curves of the S21 parameter as a function of frequency for aerosols of different materials (carbon, zinc oxide) at the same concentration.

[0017] Figure 4 The following is an example of simulation results from an embodiment of this disclosure, illustrating the effect of different concentrations of carbon material aerosols on the transmittance of electromagnetic waves at a specific frequency.

[0018] Figure 5 The screenshot of the electric field distribution monitor in this embodiment of the present disclosure compares the field strength distribution of electromagnetic waves propagating in pure air and in aerosol-containing media, visually demonstrating the attenuation effect.

[0019] Figure 6 The following is an example of simulation results from an embodiment of this disclosure, illustrating the effect of different concentrations of zinc oxide aerosol on the transmittance of electromagnetic waves at a specific frequency.

[0020] Figure 7 The screenshot of the electric field distribution monitor in this embodiment of the present disclosure compares the field strength distribution of electromagnetic waves propagating in aerosol media of different concentrations, and intuitively shows the transmission of electromagnetic waves. Detailed Implementation

[0021] The present disclosure will be further described below with reference to the accompanying drawings and embodiments.

[0022] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains.

[0023] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0024] Example 1 One embodiment of this disclosure provides a simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission, the steps of which include: Step 1: Define the basic electromagnetic wave simulation environment and set boundary conditions; Step 2: Create the aerosol propagation area based on the simulation environment and construct an aerosol medium model; Step 3: Calculate the equivalent material parameters based on the effective medium theory, and substitute the calculated equivalent material parameters into the material properties of the aerosol medium model to obtain the electromagnetic wave simulation model; Step 4: Set up an excitation source and use the excitation source to simulate the incident electromagnetic wave into the electromagnetic wave simulation model. Set up an electromagnetic field monitor at the target frequency and observe the three-dimensional field distribution of the electromagnetic wave in the aerosol medium. Step 5: Based on the three-dimensional field distribution, analyze the attenuation of electromagnetic waves after passing through the aerosol medium to obtain the results of the influence of the aerosol environment on the transmission of electromagnetic waves.

[0025] As an embodiment, this disclosure provides a simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission. This method can accurately characterize the influence of various solid particles, wide particle size distributions, and concentration variations on electromagnetic wave transmission through generalized modeling and simulation, and quantitatively analyze their impact on electromagnetic wave transmission. This disclosure fills a technological gap and solves the problems of inaccurate and poor universality in existing technologies for modeling complex solid aerosol compositions. It can systematically and quantitatively analyze the influence of particle type, size distribution, and concentration on the transmittance of electromagnetic waves in specific bands, providing theoretical basis and design methods for fields such as communication system design, remote sensing, environmental monitoring, and electromagnetic protection. The specific implementation process of this method is as follows: Step 1: Define the basic electromagnetic wave simulation environment and set boundary conditions; This disclosure describes how to create a new microwave / optical band project in the Studio Suite simulation platform. The operating frequency range is set to cover the target electromagnetic band. A simulation background is created, whose size should be much larger than the electromagnetic wavelength and aerosol propagation path, and appropriate boundary conditions are set (typically set to "Open (add space)").

[0026] Step 2: Create the aerosol propagation area based on the simulation environment and construct an aerosol medium model; Specifically, first, (1) create a uniform medium cube: create a cuboid in CST to represent the propagation area filled with aerosol. The thickness of the cuboid is the propagation distance L of the electromagnetic wave.

[0027] (2) Define the dispersive material: Right-click the cuboid and select New Material in Material.

[0028] (3) In the material properties, set Type to Normal, and input the equivalent complex permittivity or equivalent complex permeability (equivalent material parameter) calculated according to the effective medium theory to obtain the aerosol medium model. The equivalent complex permittivity needs to be calculated later.

[0029] Step 3: Calculate the equivalent material parameters based on the effective medium theory, and substitute the calculated equivalent material parameters into the material properties of the aerosol medium model to obtain the electromagnetic wave simulation model; Specifically, this step is completed outside of CST (such as MATLAB or Python), and its core is to calculate the equivalent complex permittivity or equivalent complex permeability of the aerosol mixture. The process includes: (1) Input parameters; (2) Select the substrate material: usually air (ε = 1).

[0030] (3) Set the encapsulation material: Define the material of the aerosol particles, such as carbon-based materials, metals (Al, Fe), oxides (ZnO), etc., and obtain their complex permittivity or complex permeability in this frequency band.

[0031] (4) Particle morphology and volume fraction: Determine the particle size distribution of aerosols, focusing on representative diameters such as PM2.5 and PM10. At the same time, define the volume fraction of aerosols as a concentration indicator.

[0032] (5) Selection of the mixing model: The equivalent complex permittivity ε of the mixture is calculated using the Maxwell-Garnett effective dielectric theory. eff :

[0033] in, ε m The dielectric constant of the substrate air is given. ε p It is the complex permittivity of the encapsulated particles. f It is the volume fraction of the particles.

[0034] Furthermore, the calculated equivalent complex permittivity ε eff The real and imaginary parts are input into the dispersive material properties created in step 2.

[0035] As an example, if the aerosol particles are magnetic, the Maxwell-Garnett theory is also used, replacing ε with μ to calculate μ. eff The real and imaginary parts are input into the dispersive material properties created in step 2.

[0036] Step 4: Set up an excitation source and use the excitation source to simulate the incident electromagnetic wave into the electromagnetic wave simulation model. Set up an electromagnetic field monitor at the target frequency and observe the three-dimensional field distribution of the electromagnetic wave in the aerosol medium. Specifically, (1) Excitation source: At one end of the cuboid representing the aerosol region, a plane wave excitation source is set up with its propagation direction perpendicular to the cross section of the cuboid to simulate the incident electromagnetic wave.

[0037] (2) Monitor: Set up an electric / magnetic field monitor at the target frequency to observe the three-dimensional field distribution of electromagnetic waves in the aerosol medium.

[0038] (3) Set up waveguide ports. Define one port at each end of the cuboid and calculate its transmission coefficient (S21 parameter) through post-processing function. This coefficient directly corresponds to the electromagnetic wave transmittance T.

[0039] Step 5: Based on the three-dimensional field distribution, analyze the attenuation of electromagnetic waves after passing through the aerosol medium to obtain the results of the influence of the aerosol environment on the transmission of electromagnetic waves.

[0040] First, start the CST time-domain solver or frequency-domain solver to perform electromagnetic simulation; Secondly, after the simulation is complete, view the results through the navigation tree: Finally, directly read the amplitude (dB) or linear value of the S21 parameter, which is the transmittance / attenuation.

[0041] This disclosure allows for a direct observation of the attenuation of electromagnetic waves after passing through an aerosol medium by examining the distribution of electric / magnetic fields.

[0042] Example 2 One embodiment of this disclosure provides a simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission. This embodiment simulates the attenuation of 10GHz electromagnetic waves by PM2.5-level carbon black particle aerosols. The specific steps are as follows: Step 1: Set up the simulation environment; (1) Create a new “Microwave&RF / Optical” project in CST Studio Suite.

[0043] (2) Set the frequency range to 8 GHz to 12 GHz, with a center frequency of 10 GHz.

[0044] (3) Set the background boundary condition to "Open (add space)".

[0045] Step 2: Construct the geometric model; Create a cross section of 100mm A 100mm long cuboid (500mm long) represents the electromagnetic wave passing through a 0.5-meter thick aerosol region.

[0046] Step 3: Define the aerosol equivalent material; (1) Substrate: air, with a dielectric constant ε of 1.0.

[0047] (2) Encapsulation material: carbon black particles. According to published research literature, its complex permittivity near 10 GHz is approximately ε = 15 - j5.

[0048] (3) Concentration and volume fraction: Simulate a polluted weather, assuming the mass concentration of carbon black particles is 10 mg / m³. 3 The density of carbon black is approximately 2.0 g / cm³. 3 Its volume fraction was calculated. f ≈ 5×10 -5 .

[0049] (4) Application of effective medium theory: Substitute the above parameters into the Maxwell-Garnett formula to calculate the equivalent complex permittivity ε of the aerosol mixture. eff ≈ 1.00012564 - j0.00000717. Create a new material in the CST material library and set its dielectric constant to the equivalent complex dielectric constant calculated above. Finally, assign this material to the cuboid created in step 2.

[0050] Step 4: Configure the stimulus source and port monitor; (1) Apply a plane wave excitation along the propagation direction (Z-axis) to the starting end face of the cuboid.

[0051] (2) Set up port monitors at both ends of the cuboid to calculate the S-parameters.

[0052] Step 5: Set up the field monitor; In CST, an additional electric field monitor (E-Field Monitor) is set up. Select the frequency domain monitor and specify the frequency as 10 GHz. This monitor will record the electric field intensity distribution across the entire simulation region under steady-state conditions.

[0053] Step 6: Run the simulation and analyze the results; (1) Start the time-domain solver to perform simulation.

[0054] (2) Transmittance results: Navigate to S-Parameters in 1D Results to view S21. For example... Figure 4 As shown, at 10 GHz, the initial low concentration ( f v ≈ 5×10 -5 The transmittance S21 is approximately -0.003 dB. The volume fraction was modified to 5 × 10⁻⁶. -4 Subsequently, the S21 value dropped to approximately -0.03 dB, and continued to decrease as the volume fraction increased.

[0055] (3) Field distribution results: Navigate to E-Field in 2D / 3D Results to view the electric field distribution. For example... Figure 5 (a) and Figure 5 As shown in (b), it can be clearly seen that after the plane wave passes through the aerosol region, its electric field amplitude is only slightly reduced, the field distribution pattern is relatively uniform, and the wavefront remains clear. Figure 5 (b) and Figure 5In comparison with (a), it can be clearly seen that the amplitude attenuation of electromagnetic waves in the propagation direction is significantly aggravated, and the field strength behind the entire aerosol region is significantly weakened, which intuitively demonstrates the physical process that the increase in concentration leads to faster dissipation of electromagnetic wave energy.

[0056] Example 3 One embodiment of this disclosure provides a simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission. This embodiment simulates the broadband transmission characteristics of zinc oxide aerosol in the 2-18 GHz frequency range. The specific process is as follows: Steps 1-4 in this embodiment are the same as steps 1-4 in embodiment 2. In this embodiment, the frequency range is set to 2-18GHz.

[0057] In step 3, the package material is defined as follows: Encapsulation material: Zinc oxide (ZnO). ZnO can be considered a low-loss dielectric in this frequency band, and its complex permittivity is approximately ε = 8.5 – j2.

[0058] Setting up multiple volume fractions: To systematically study the effect of concentration, we define three simulation scenarios: Scenario A (low concentration): f 1 = 1 × 10 -5 Scenario B (medium concentration): f 2 = 1 × 10 -4 Scenario C (High Concentration): f 3 = 1 × 10 -3 In step 5, set up a field monitor. In CST, set up an electric field monitor with a frequency of 10 GHz (as a representative frequency point of the C-band). This setting allows observation of the direct effect of different concentrations on the field distribution at a specific frequency.

[0059] In step 6, when running the simulation and comparative analysis, the frequency domain solver is run for the models defined for the three different materials.

[0060] Transmittance results: The three S21 curves are plotted in the same graph for comparison, such as... Figure 6 As shown in the figure, the results clearly show that across the entire frequency band, transmission loss follows the pattern of high concentration > medium concentration > low concentration.

[0061] Field distribution results: View the electric field distribution diagrams of the three concentration models at 10 GHz, as follows. Figure 7 (a) Figure 7 (b) Figure 7As shown in (c), the maximum electric field strength gradually decreases with increasing ZnO concentration, proving that the electromagnetic wave is attenuated. This series of field distribution diagrams constitutes a dynamic and visualized "attenuation spectrum," which strongly confirms from a spatial dimension the decisive influence of aerosol concentration on the transmission capability of electromagnetic waves. This is intuitive information that cannot be provided by simply relying on the S21 curve.

[0062] Example 4 One embodiment of this disclosure provides a simulation modeling system for the influence of aerosol environment on electromagnetic wave transmission, including: The simulation model building module is used to define the basic electromagnetic wave simulation environment and set boundary conditions; based on the simulation environment, the propagation region of aerosols is created, and an aerosol medium model is constructed; based on the effective medium theory, the equivalent material parameters are calculated, and the calculated equivalent material parameters are substituted into the material properties of the aerosol medium model to obtain the electromagnetic wave simulation model; The simulation module is used to set up an excitation source and simulate incident electromagnetic waves onto an electromagnetic wave simulation model. An electromagnetic field monitor is set at the target frequency to observe the three-dimensional field distribution of the electromagnetic waves in the aerosol medium. Based on the three-dimensional field distribution, the attenuation of the electromagnetic waves after passing through the aerosol medium is analyzed, yielding the results of the influence of the aerosol environment on electromagnetic wave transmission. Example 5 One embodiment of this disclosure provides a computer program product, including a computer program that, when executed by a processor, implements the simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission.

[0063] Example 6 One embodiment of this disclosure provides a non-transitory computer-readable storage medium for storing computer instructions. When these computer instructions are executed by a processor, they implement the simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission.

[0064] Example 7 One embodiment of this disclosure provides an electronic device, including a processor, a memory, and a computer program; wherein the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device is running, the processor executes the computer program stored in the memory to enable the electronic device to perform a simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission.

[0065] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0066] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0067] While the specific embodiments of this disclosure have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this disclosure. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this disclosure are still within the scope of protection of this disclosure.

Claims

1. A simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission, characterized in that, include: Define the basic electromagnetic wave simulation environment and set the boundary conditions; The propagation area of ​​aerosols is created based on a simulation environment, and an aerosol medium model is constructed. The equivalent material parameters are calculated based on the effective medium theory. The calculated equivalent material parameters are then substituted into the material properties of the aerosol medium model to obtain the electromagnetic wave simulation model. An excitation source is set up, and the electromagnetic waves incident on the electromagnetic wave simulation model are simulated using the excitation source. An electromagnetic field monitor is set up at the target frequency to observe the three-dimensional field distribution of the electromagnetic waves in the aerosol medium. Based on the three-dimensional field distribution, the attenuation of electromagnetic waves after passing through the aerosol medium is analyzed, and the influence of the aerosol environment on the transmission of electromagnetic waves is obtained.

2. The simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission as described in claim 1, characterized in that, The definition of the basic electromagnetic wave simulation environment and the setting of boundary conditions include: Create new microwave or optical band projects in CST; Set the operating frequency range to cover the target electromagnetic wave frequency band; Create a simulation space whose size is larger than the electromagnetic wavelength and the aerosol propagation path, and set appropriate boundary conditions, labeled "Open (add space)".

3. The simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission as described in claim 1, characterized in that, The process of creating the aerosol propagation region based on a simulation environment and constructing an aerosol medium model includes: In CST, create a cuboid to represent the propagation area filled with aerosols, and the thickness of the cuboid is the propagation distance of the electromagnetic waves; Right-click the cuboid, select New Material from Material, and define the dispersive material properties; In the material properties, set Type to Normal to construct an aerosol medium model.

4. The simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission as described in claim 1, characterized in that, The equivalent material parameters are calculated based on the effective medium theory, and then substituted into the material properties of the aerosol medium model to obtain the electromagnetic wave simulation model, including: The calculation process is completed outside of CST; Using air as the substrate material, the material of aerosol particles is defined, and their complex permittivity or complex permeability in that frequency band is obtained. The particle size distribution of aerosols was clearly defined, and the volume fraction of aerosols was defined as a concentration indicator. Select the mixing model and use the Maxwell-Garnett effective medium theory to calculate the equivalent material parameters of the mixture. Input the real and imaginary parts of the calculated equivalent material parameters into the dispersive material properties.

5. The simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission as described in claim 4, characterized in that, If the aerosol particles are magnetic, the real and imaginary parts of the calculated equivalent complex permittivity are also input into the created dispersive material properties using the Maxwell-Garnett theory.

6. The simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission as described in claim 1, characterized in that, The excitation source is set at one end of a cuboid representing the aerosol region, with its propagation direction perpendicular to the cross-section of the cuboid, simulating the incident electromagnetic wave; an electric / magnetic field monitor is set at the target frequency to observe the three-dimensional field distribution of the electromagnetic wave in the aerosol medium; a port is defined at each end of the cuboid to calculate the transmission coefficient, which directly corresponds to the transmittance of the electromagnetic wave.

7. A simulation modeling system for the influence of aerosol environment on electromagnetic wave transmission, characterized in that, include: The simulation model building module is used to define the basic electromagnetic wave simulation environment and set boundary conditions; The propagation area of ​​aerosols is created based on a simulation environment, and an aerosol medium model is constructed. The equivalent material parameters are calculated based on the effective medium theory. The calculated equivalent material parameters are then substituted into the material properties of the aerosol medium model to obtain the electromagnetic wave simulation model. The simulation module is used to set an excitation source, use the excitation source to simulate the incident electromagnetic wave to the electromagnetic wave simulation model, set an electromagnetic field monitor at the target frequency, and observe the three-dimensional field distribution of the electromagnetic wave in the aerosol medium. Based on the three-dimensional field distribution, the attenuation of electromagnetic waves after passing through the aerosol medium is analyzed, and the influence of the aerosol environment on the transmission of electromagnetic waves is obtained.

8. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission as described in any one of claims 1-6.

9. A non-transitory computer-readable storage medium, characterized in that, The non-transitory computer-readable storage medium is used to store computer instructions, which, when executed by a processor, implement a simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission as described in any one of claims 1-6.

10. An electronic device, characterized in that, include: The device includes a processor, a memory, and a computer program; wherein the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device is running, the processor executes the computer program stored in the memory to enable the electronic device to perform a simulation modeling method for the influence of aerosol environment on electromagnetic wave transmission as described in any one of claims 1-6.

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