Multi-scale analysis method for performance of surface radar antenna under multi-energy loading

Abstract

The invention discloses a multi-scale analysis method for the performance of a surface radar antenna under multi-energy loading. The method comprises the following steps: based on a temperature field-field circuit coupling analysis model, according to design parameters of an antenna unit, determining performance parameters of the antenna unit after the antenna unit is influenced by temperature; based on a multi-field coupling analysis model, according to the new radiation pattern of the antenna units and the design parameters of the antenna array formed by the antenna units, determining a new radiation pattern generated after the electromagnetic field of the antenna array is influenced by the temperature field and the force field; and evaluating the performance of the antenna array according to the electrical performance parameters of the antenna array. As the structures of the two-stage temperature field-field circuit coupling analysis model and the multi-field coupling analysis model are simpler and higher in stability compared with a one-stage overall model, the performance parameters of the antenna unit and the performance parameters of the antenna array are calculated by adopting the two-stage model, and the performance parameters of the antenna unit and the performance parameters of the antenna array are calculated. The complex calculation process and excessive calculation amount can be reduced, and the stability of the method is enhanced.

Description

Technical Field

[0001] The present invention belongs to the technical field of wireless communications, and in particular relates to a multi-scale analysis method for surface radar antenna performance under multi-energy loading. Background Art

[0002] With the development of military and civilian communication equipment such as aerospace equipment, radio frequency identification and wireless body area network, surface radar phased array antennas are showing a trend of high density and high integration. Surface radar phased array antennas are widely used in various new radar systems due to their small size, low radar cross-section, and easy integration with microwave modules.

[0003] The surface radar phased array antenna system is a complex multidisciplinary system involving several disciplines such as electromagnetics, force, heat, and materials, and there is coupling between them. In the current antenna system design method, each discipline simulates or tests its own design content, and can only obtain the influence of the antenna electrical performance under a single energy loading. When facing the multidisciplinary strong coupling analysis of the entire antenna system, simply superimposing the precise analysis models of each related discipline will lead to problems such as conflicting design goals and huge problem scale. It can only be manually selected and iterated based on the local optimal results of each discipline, resulting in a long design cycle and high cost, and it is impossible to guarantee the global optimal result. In order to achieve the global optimal design of the surface radar antenna system, a multi-scale analysis method for the performance of phased array antennas under multi-energy loading is urgently needed to conduct multi-field coupling modeling and unit-array electrical performance analysis for multiple disciplines.

[0004] Among the current antenna system analysis methods, the two-field coupling analysis method for phased array antennas is relatively mature, such as displacement field-electromagnetic field. Although the two-field coupling analysis method has a small problem scale, it cannot simulate complex real situations. Multi-field coupling analysis methods such as temperature field-displacement field-electromagnetic field are usually coupled in sequence, and an overall model is established to analyze the entire antenna array. Although the results obtained by the multi-field coupling analysis method are closer to the actual working conditions; however, this coupling analysis method increases the scale of the problem, causing calculation difficulties and even making it difficult to obtain analysis results.

[0005] Therefore, the current multi-field coupling analysis method has a large amount of calculation and low stability. Summary of the invention

[0006] The embodiment of the present invention provides a multi-scale analysis method for surface radar antenna performance under multi-energy loading, which can solve the problems of large calculation amount and low stability of current multi-field coupling analysis methods.

[0007] In a first aspect, an embodiment of the present invention provides a multi-scale analysis method for surface radar antenna performance under multi-energy loading, the method comprising:

[0008] Based on the temperature field-field-path coupling analysis model, determining the performance parameters of the antenna unit after being affected by temperature according to the design parameters of the antenna unit, wherein the performance parameters of the antenna unit after being affected by temperature include: at least one of a new return loss of the antenna unit and a new operating frequency of the antenna unit, and a new radiation pattern of the antenna unit;

[0009] Based on the multi-field coupling analysis model, according to the new radiation pattern of the antenna unit and the design parameters of the antenna array composed of the antenna units, the new radiation pattern generated by the electromagnetic field of the antenna array affected by the temperature field and the force field is determined;

[0010] The performance of the antenna array is evaluated according to the electrical performance parameters of the antenna array, wherein the electrical performance parameters of the antenna array include: at least one of a new return loss of the antenna unit and a new operating frequency of the antenna unit, and the new return loss of the antenna unit and a new radiation pattern of the antenna array.

[0011] In a second aspect, an embodiment of the present invention provides a multi-scale analysis device for surface radar antenna performance under multi-energy loading, comprising:

[0012] A first processing unit, the first processing unit is used to determine the performance parameters of the antenna unit after being affected by temperature based on the temperature field-field-path coupling analysis model and the design parameters of the antenna unit, wherein the performance parameters of the antenna unit after being affected by temperature include: at least one of a new return loss of the antenna unit and a new operating frequency of the antenna unit, and a new radiation pattern of the antenna unit;

[0013] The second processing unit is used to determine a new radiation pattern generated by the electromagnetic field of the antenna array affected by the temperature field and the force field based on the multi-field coupling analysis model and according to the new radiation pattern of the antenna unit and the design parameters of the antenna array composed of the antenna units;

[0014] An evaluation unit, the evaluation unit is used to evaluate the performance of the antenna array according to the electrical performance parameters of the antenna array, wherein the electrical performance parameters of the antenna array include: at least one of a new return loss of the antenna unit and a new operating frequency of the antenna unit, and a new return loss of the antenna unit and a new radiation pattern of the antenna array.

[0015] In a third aspect, an embodiment of the present invention provides an electronic device, comprising a processor and a memory, wherein the memory is used to store computer programs; the processor can be used to execute the computer program (instructions) stored in the memory to implement the method of the first aspect above.

[0016] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed, the method of the first aspect described above can be implemented.

[0017] It can be understood that the beneficial effects of the second to fourth aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here.

[0018] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: since the structures of the two-stage temperature field-field circuit coupling analysis model and the multi-field coupling analysis model are simpler and more stable than the one-stage overall model, the present invention adopts a two-stage model to calculate the performance parameters of the antenna unit and the performance parameters of the antenna array respectively, which can reduce the complicated calculation process and excessive amount of calculation when calculating through the one-stage overall model, enhance the stability of the method, and avoid the situation where it is difficult to obtain the calculation results of the model. Furthermore, the dielectric constant used in the temperature field-field circuit coupling analysis model of the present invention includes the error caused by the influence of the temperature field. Compared with the existing method that does not consider the influence of the temperature increase on the dielectric constant of the material, the present invention can obtain more accurate performance parameters of the antenna unit; thereby improving the accuracy of the evaluation results of the antenna array performance of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A flowchart for implementing a multi-scale analysis method for surface radar antenna performance under multi-energy loading provided by an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of a phased array antenna structure model provided by an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of a surface radar phased array antenna model provided by an embodiment of the present invention;

[0022] Figure 4 A comparative schematic diagram of the influence of a temperature field on an antenna unit provided by an embodiment of the present invention;

[0023] Figure 5 A comparative schematic diagram of the influence of a multi-physical coupling length on an antenna array provided by an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the structure of a multi-scale analysis device for surface radar antenna performance under multi-energy loading provided by an embodiment of the present invention;

[0025] Figure 7 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0026] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0027] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0028] It should also be understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0029] As used in the present specification and the appended claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]", depending on the context.

[0030] In addition, in the description of the present specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0031] References to "one embodiment" or "some embodiments" etc. described in the present specification mean that one or more embodiments of the present invention include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0032] The present invention is further described in detail below with reference to specific embodiments, but the embodiments of the present invention are not limited thereto.

[0033] The multi-scale analysis method of surface radar antenna performance under multi-energy loading provided in the embodiment of the present invention can be applied to electronic devices such as mobile terminals, personal laptops, supercomputers, etc. The embodiment of the present invention does not impose any restrictions on the specific type of electronic equipment.

[0034] Figure 1 The flowchart shown is a multi-scale analysis method for surface radar antenna performance under multi-energy loading provided by an embodiment of the present invention. As an example but not a limitation, the method can be applied to the above electronic device, and the method can include steps S101-S103, and each step is described below.

[0035] S101, based on a temperature field-field circuit coupling analysis model, determining performance parameters of the antenna unit affected by temperature according to design parameters of the antenna unit.

[0036] Exemplarily, the performance parameters of the antenna unit after being affected by temperature may include: at least one of a new return loss of the antenna unit and a new operating frequency of the antenna unit, and a new radiation pattern of the antenna unit.

[0037] The displacement field caused by shock, vibration and temperature field will cause the relative position between antenna units to change, but the electrical performance of the antenna unit will not be affected by the displacement field, but only by the insertion loss of the transmission line caused by the temperature field and the influence on the dielectric constant. The electromagnetic performance of the antenna unit consists of two parts: transmission performance and radiation performance. The electromagnetic performance of the antenna unit can be analyzed from these two aspects. Drastic changes in temperature will cause the insertion loss of the transmission line to increase, the power to decrease, and ultimately cause antenna impedance mismatch and gain loss.

[0038] The transmission performance of the antenna unit can be analyzed and evaluated through the return loss of the antenna unit or the operating frequency of the antenna unit, and the radiation performance of the antenna unit can be analyzed and evaluated through the radiation pattern of the antenna unit. Since the operating frequency of the antenna unit is the frequency corresponding to the lowest point of the return loss curve of the antenna unit, the operating frequency of the antenna unit can be obtained by analyzing the return loss curve of the antenna unit. Therefore, in order to reduce the amount of calculation, only one parameter of the operating frequency and the return loss can be determined.

[0039] In some embodiments, before determining the performance parameters of the antenna unit (such as radiation pattern, return loss or operating frequency, etc.), a surface radar phased array antenna model, a phased array antenna structure model, and a phased array antenna electromagnetic model can be constructed based on the design parameters of the antenna unit and the design parameters of the antenna array.

[0040] For example, see Figure 2 The phased array antenna structure model in Figure 2The antenna unit in the antenna operates at 17GHz and consists of a radiating element, a reflecting element, a guiding element and a semi-closed substrate integrated waveguide. The main lobe deflection angle of the antenna unit is 57°.

[0041] For example, see Figure 3 The surface radar phased array antenna model in Figure 3 The antenna array in can be composed of Figure 2 The planar array composed of antenna units shown in is designed on an integrated substrate.

[0042] In a possible implementation, the design parameters of the antenna unit may include the length, width, height, thickness, etc. of the antenna. The design parameters of the antenna array may include the arrangement spacing and arrangement mode of the antenna units, etc.

[0043] In some embodiments, the temperature field-field-path coupling analysis model may include a gain loss model for determining a new radiation pattern of the antenna unit after being affected by temperature, a transmission performance error model for determining a new return loss of the antenna unit after being affected by temperature, and a frequency error model for determining a new operating frequency of the antenna unit after being affected by temperature.

[0044] For example, see Figure 4 (a) in which the solid line is the return loss curve obtained by using the original dielectric constant of the antenna unit; the dotted line is the return loss curve obtained by using the new dielectric constant of the antenna unit. Figure 4 (b) in which the solid line is the radiation direction curve obtained by using the original dielectric constant of the antenna unit, and the dotted line is the radiation direction curve obtained by using the new dielectric constant of the antenna unit. Figure 4 It can be seen that the drift of the dielectric constant under the action of the temperature field leads to the performance change of the antenna unit, which not only causes the frequency offset phenomenon, but also causes the main lobe gain of the antenna unit to decrease and the back lobe to increase. If the original dielectric constant is still used to determine the performance parameters of the antenna unit at this time, a large error will occur. Therefore, the transmission performance error model, gain loss model, and frequency error model in the present invention can use the new dielectric constant of the antenna unit after the antenna unit is affected by temperature to calculate the performance parameters of the antenna unit, thereby improving the accuracy of the performance parameters of the antenna unit obtained by the present invention and thus improving the accuracy of the antenna array performance analysis results.

[0045] In one possible implementation, the new return loss of the antenna unit after being affected by temperature can be determined through a transmission performance error model, and the new radiation pattern of the antenna unit after being affected by temperature can be determined through a gain loss model; the performance of the antenna unit is analyzed and evaluated based on the new return loss and new radiation pattern of the antenna unit.

[0046] In one example, the transmission performance error model may satisfy the following formula:

[0047] RL(dB)=-20lg|Γ|

[0048] RL (dB) is the new return loss of the antenna unit;

[0049] in:

[0050]

[0051] R n =Rtanδ n / tanδ

[0052] Among them, Z eq is the new equivalent impedance of the antenna unit after being affected by temperature, Z0 is the original equivalent impedance of the antenna unit, R n is the real part of the new equivalent impedance of the antenna unit, X is the imaginary part of the new equivalent impedance of the antenna unit, and tanδ n is the imaginary part of the new dielectric constant of the antenna unit after being affected by temperature, R is the real part of the original equivalent impedance of the antenna unit, and tanδ is the imaginary part of the original dielectric constant of the antenna unit, which represents the loss characteristics of the substrate.

[0053] In one example, the gain loss model may satisfy the following formula:

[0054]

[0055] in, is the new radiation pattern of the antenna unit, I en is the new excitation amplitude of the antenna unit after being affected by temperature, e ΔΦ is the new excitation phase of the antenna unit after being affected by temperature, is the original radiation pattern of the antenna unit.

[0056] in:

[0057] I en =I e e Φ tanδ n / tanδ

[0058] I e is the original excitation amplitude of the antenna unit, e Φ is the original excitation phase of the antenna element.

[0059] For example, ε r , ε rn , tanδ n Parameters such as the phased array antenna model can be determined through the surface radar phased array antenna model, the phased array antenna structure model, and the phased array antenna electromagnetic model.

[0060] Exemplarily, the shape of the conductive pattern of the antenna unit remains unchanged, and only when the dielectric constant shifts due to temperature, the shape of the radiation pattern remains unchanged, and only the excitation amplitude and phase change.

[0061] In another possible implementation, the new operating frequency of the antenna unit after being affected by temperature can be determined by a frequency error model, and the new radiation pattern of the antenna unit can be determined by a gain loss model; the performance of the antenna unit can be analyzed and evaluated based on the new operating frequency and new radiation pattern of the antenna unit.

[0062] In one example, the frequency error model may satisfy the following formula:

[0063]

[0064] f n is the new operating frequency of the antenna unit, f is the original operating frequency of the antenna unit, ε r The original complex relative permittivity of the substrate is adopted for the antenna element, ε rn is the real part of the new dielectric constant of the antenna element after being affected by temperature.

[0065] in:

[0066] ε r =ε'(1-tanδ)

[0067] ε' is the real part of the original dielectric constant of the antenna element, representing the dielectric properties of the substrate.

[0068] S102, determining the radiation pattern of the antenna array based on the multi-field coupling analysis model, according to the new radiation pattern of the antenna unit and the design parameters of the antenna array composed of the antenna units.

[0069] In a possible implementation, a multi-field coupling analysis model may be used to simulate a new radiation pattern of an antenna array in a multi-physics coupling field.

[0070] See also Figure 5 , Figure 5 The solid line in the figure is the radiation pattern when the antenna array is not affected by the multi-physics coupling field (that is, the electromagnetic field of the antenna array is not affected by the temperature field and the force field), and the dotted line is the radiation shielding pattern of the antenna array in the multi-physics coupling field. It can be seen that the deformation of the antenna array surface under the action of different physical fields leads to the displacement of the antenna unit, resulting in position deviation, and ultimately leads to the reduction of the main lobe gain of the antenna array and the increase of the side lobe. Therefore, the accuracy of the performance analysis of the antenna array can be improved by determining the new radiation pattern of the antenna array through the multi-field coupling analysis model considering the influence of the multi-physics coupling field.

[0071] For example, based on the actual values ​​of the design parameters of the antenna array, the displacement field caused by the impact, vibration and temperature field of the antenna array can be analyzed using a multidisciplinary analysis platform tool, and the calculation results can be extracted to complete the modeling of the antenna array displacement error model. Then, the actual values ​​of the design parameters are replaced with corresponding virtual parameter symbols to obtain a universal antenna array displacement error model. Based on the active unit pattern synthesis algorithm, on the basis of the antenna array displacement error model, combined with the temperature field-field-path coupling analysis model of the antenna unit, a multi-field coupling analysis model of the antenna array is constructed.

[0072] In one example, the multi-field coupling analysis model can satisfy the following formula:

[0073]

[0074] in, is the new radiation pattern of the antenna array after being affected by temperature, N is the total number of antenna elements included in the antenna array, j is the imaginary unit, k is the wave number, is a unit vector, Δr i is the displacement of the ith antenna element in the multi-physics coupling field, is the radiation pattern of the ith antenna unit affected by temperature, The excitation amplitude of the i-th antenna unit after being affected by temperature.

[0075] Will and Δr i Expand to get:

[0076]

[0077] Among them, Δr iT is the displacement deviation of the ith antenna unit in the antenna array caused by the temperature field, Δr iF is the displacement deviation of the i-th antenna unit in the antenna array caused by the force field, Δx iT , Δy iT , Δz iT They are Δr iT Unit vector error in the x, y, and z axes in the Cartesian coordinate system, Δx iF , Δy iF , Δz iF They are Δr iF Unit vector error under x, y, and z axes in the Cartesian coordinate system, θ, are the two included angles of the antenna unit in the spherical coordinate system.

[0078] For example, Δr iT , Δr iF Parameters such as can be determined by the design parameters of the antenna array.

[0079] S103: Evaluate the performance of the antenna array according to the electrical performance parameters of the antenna array.

[0080] Exemplarily, the electrical performance parameters of the antenna array may include: at least one of a new return loss of the antenna unit and a new operating frequency of the antenna unit, and a new return loss of the antenna unit and a new radiation pattern of the antenna array.

[0081] In one example, the performance of the antenna array may be evaluated by determining whether the electrical performance parameters of the antenna array meet preset conditions.

[0082] Exemplarily, when the antenna array does not meet the preset conditions, the design parameters of the antenna unit can be adjusted preferentially; and steps S101-S103 are executed again to evaluate the performance of the antenna array. If the preset conditions are still not met, the design parameters of the antenna array can be adjusted, and steps S102-S103 are executed again to evaluate the performance of the antenna array. The present invention can achieve distributed adjustment of the antenna unit and the antenna array by designing a two-level model to calculate the performance parameters of the antenna unit and the antenna array respectively; avoiding the situation where the performance parameters of the antenna unit and the antenna array must be recalculated each time when using a one-level overall model, which can reduce the amount of calculation and improve calculation efficiency.

[0083] For example, see Figure 2 , you can prioritize Figure 2 The conductive pattern of the antenna unit is shown as 201. When the performance parameter of the antenna array still fails to meet the preset conditions after adjusting the conductive pattern of the antenna unit, the spacing between the antenna units in the antenna array can be adjusted.

[0084] Since the structures of the two-stage temperature field-field circuit coupling analysis model and the multi-field coupling analysis model are simpler and more stable than the one-stage overall model, the present invention adopts a two-stage model to calculate the performance parameters of the antenna unit and the performance parameters of the antenna array respectively, which can reduce the complicated calculation process and excessive amount of calculation when calculating through the one-stage overall model, enhance the stability of the method, and avoid the situation where it is difficult to obtain the calculation results of the model. Furthermore, the dielectric constant used in the temperature field-field circuit coupling analysis model of the present invention includes the error caused by the influence of the temperature field. Compared with the existing method that does not consider the influence of the temperature increase on the dielectric constant of the material, the present invention can obtain more accurate performance parameters of the antenna unit; thereby improving the accuracy of the evaluation results of the antenna array performance of the present invention.

[0085] Figure 6The structure diagram of a multi-scale analysis device for surface radar antenna performance under multi-energy loading provided by an embodiment of the present invention is shown. As an example but not limitation, the device 600 may include a first processing unit 610, a second processing unit 620 and an evaluation unit 630.

[0086] The first processing unit 610 is used to determine the performance parameters of the antenna unit after being affected by temperature based on the temperature field-field-path coupling analysis model and the design parameters of the antenna unit, wherein the performance parameters of the antenna unit after being affected by temperature include: at least one of a new return loss of the antenna unit and a new operating frequency of the antenna unit, and a new radiation pattern of the antenna unit;

[0087] The second processing unit 620 is used to determine a new radiation pattern generated by the electromagnetic field of the antenna array affected by the temperature field and the force field based on the multi-field coupling analysis model according to the new radiation pattern of the antenna unit and the design parameters of the antenna array composed of the antenna units;

[0088] The evaluation unit 630 is used to evaluate the performance of the antenna array according to the electrical performance parameters of the antenna array, wherein the electrical performance parameters of the antenna array include: at least one of the new return loss of the antenna unit and the new operating frequency of the antenna unit, and the new return loss of the antenna unit and the new radiation pattern of the antenna array.

[0089] Since the structures of the two-stage temperature field-field-circuit coupling analysis model and the multi-field coupling analysis model are simpler and more stable than the one-stage overall model, the present invention adopts a two-stage model to respectively calculate the performance parameters of the antenna unit and the performance parameters of the antenna array, thereby reducing the complex calculation process and excessive calculation amount when calculating through the one-stage overall model, enhancing stability, and avoiding the situation where it is difficult to obtain the calculation results of the model.

[0090] Figure 7 FIG. 1 is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. Figure 7 The electronic device 700 shown may include: at least one processor 710 ( Figure 7 Only one processor is shown in the figure), a memory 720, and a computer program 730 stored in the memory 720 and executable on the at least one processor 710, wherein the processor 710 implements the steps of any of the above-mentioned method embodiments when executing the computer program 730.

[0091] The electronic device 700 may be a processing device such as a robot that can implement the above method. The embodiment of the present invention does not impose any limitation on the specific type of the electronic device.

[0092] Those skilled in the art will understand that Figure 7The electronic device 700 is merely an example and does not constitute a limitation on the electronic device. The electronic device 700 may include more or fewer components than shown in the figure, or may combine certain components, or may include different components. For example, the electronic device 700 may also include an input and output interface.

[0093] The processor 710 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASTC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0094] The memory 720 may be an internal storage unit in some embodiments, such as a hard disk or a memory. The memory 720 may also be an external storage device in other embodiments, such as a plug-in hard disk, a smart memory card (SmartMemory Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. Further, the memory 720 may also include both an internal storage unit and an external storage device. The memory 720 is used to store an operating system, an application program, a boot loader (Boot Loader), data, and other programs, such as the program code of the computer program, etc. The memory 720 may also be used to temporarily store data that has been output or is to be output.

[0095] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0096] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0097] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments can be implemented.

[0098] An embodiment of the present invention provides a computer program product. When the computer program product runs on an electronic device, the electronic device can implement the steps in the above-mentioned method embodiments when executing the computer program product.

[0099] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, which can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned various method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium can at least include: any entity or device that can carry the computer program code to the camera / terminal device, recording medium, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, RandomAccess Memory), electric carrier signal, telecommunication signal and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disk. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electric carrier signals and telecommunication signals.

[0100] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0101] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

Claims

1. A multi-scale analysis method for surface radar antenna performance under multi-energy loading, characterized in that: include: Based on the temperature field-field-path coupling analysis model, the performance parameters of the antenna unit affected by temperature are determined according to the design parameters of the antenna unit, wherein the performance parameters of the antenna unit affected by temperature include: at least one of a new return loss of the antenna unit and a new operating frequency of the antenna unit, and a new radiation pattern of the antenna unit; Based on a multi-field coupling analysis model, according to the new radiation pattern of the antenna unit and design parameters of the antenna array formed by the antenna units, a new radiation pattern generated by the electromagnetic field of the antenna array under the influence of the temperature field and the force field is determined; The performance of the antenna array is evaluated according to the electrical performance parameters of the antenna array, wherein the electrical performance parameters of the antenna array include: at least one of a new return loss of the antenna unit and a new operating frequency of the antenna unit, and a new return loss of the antenna unit and a new radiation pattern of the antenna array.

2. The method according to claim 1, characterized in that The temperature field-field-path coupling analysis model includes a transmission performance error model for determining a new return loss of the antenna unit, a gain loss model for determining a new radiation pattern of the antenna unit, and a frequency error model for determining a new operating frequency of the antenna unit. The transmission performance error model, the gain loss model, and the frequency error model all use the new dielectric constant of the antenna unit after being affected by temperature to calculate the performance parameters of the antenna unit.

3. The method according to claim 2, characterized in that The frequency error model satisfies the following formula: Among them, f n is the new operating frequency of the antenna unit, f is the original operating frequency of the antenna unit, ε r is the original dielectric constant of the antenna unit, ε rn is the real part of the new dielectric constant of the antenna element.

4. The method according to claim 2, characterized in that: The transmission performance error model satisfies the following formula: RL(dB)=-20lg|Γ| RL (dB) is the new return loss of the antenna unit; in: R n =Rtanδ n / tanδ Among them, Z eq is the new equivalent impedance of the antenna unit, Z0 is the original equivalent impedance of the antenna unit, R n is the real part of the new equivalent impedance of the antenna unit, X is the imaginary part of the new equivalent impedance of the antenna unit, tanδ n is the imaginary part of the new dielectric constant of the antenna unit, R is the real part of the original equivalent impedance of the antenna unit, and tanδ is the imaginary part of the original dielectric constant of the antenna unit.

5. The method according to claim 2, characterized in that: The gain loss model satisfies the following formula: in, is the new radiation pattern of the antenna unit, I en is the new excitation amplitude of the antenna unit, e ΔΦ is the new excitation phase of the antenna element, is the original radiation pattern of the antenna unit.

6. The method according to claim 1, characterized in that The multi-field coupling analysis model satisfies the following formula: in, is the new radiation pattern of the antenna array, N is the total number of antenna elements included in the antenna array, j is an imaginary unit, k is the wave number, is a unit vector, Δr i is the displacement of the ith antenna element in the multi-physics coupling field, is the new radiation pattern of the i-th antenna element, The new excitation amplitude of the i-th antenna element.

7. The method according to claim 1, characterized in that If the electrical performance parameters of the antenna array do not meet the preset conditions, the design parameters of the antenna unit are adjusted preferentially; If the electrical performance parameters obtained according to the adjusted design parameters of the antenna unit still do not meet the preset conditions, the design parameters of the antenna array are adjusted.

8. A multi-scale analysis device for surface radar antenna performance under multi-energy loading, characterized in that: include: A first processing unit, the first processing unit is used to determine the performance parameters of the antenna unit after being affected by temperature based on the temperature field-field-path coupling analysis model and the design parameters of the antenna unit, wherein the performance parameters of the antenna unit after being affected by temperature include: at least one of a new return loss of the antenna unit and a new operating frequency of the antenna unit, and a new radiation pattern of the antenna unit; a second processing unit, the second processing unit being configured to determine, based on a multi-field coupling analysis model, a new radiation pattern of the antenna unit and design parameters of an antenna array formed by the antenna units, a new radiation pattern generated when the electromagnetic field of the antenna array is affected by a temperature field and a force field; An evaluation unit, the evaluation unit is used to evaluate the performance of the antenna array according to the electrical performance parameters of the antenna array, wherein the electrical performance parameters of the antenna array include: at least one of a new return loss of the antenna unit and a new operating frequency of the antenna unit, and the new return loss of the antenna unit and a new radiation pattern of the antenna array.

9. An electronic device comprising a memory, a processor and a computer program stored in the memory, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by the electronic device, the method according to any one of claims 1 to 7 is implemented.

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