Antenna cover model generation method, antenna cover, storage medium and radio device

Abstract

The application provides an antenna cover model generation method, an antenna cover, a storage medium and a radio device. The antenna cover model comprises an inner surface and an outer surface, and the inner surface of the antenna cover model encloses a cavity to accommodate a radiation source in the cavity. The method comprises: obtaining target radiation parameters including a target gain and / or a target beam width, radiation parameters of the radiation source including a preset beam width and / or a preset gain, and material parameters of a dielectric material used as the antenna cover; obtaining three-dimensional data of the inner surface according to the radiation parameters; obtaining three-dimensional data of the outer surface according to the three-dimensional data of the inner surface, the target radiation parameters, the radiation parameters of the radiation source, and the material parameters; the outer surface of the antenna cover formed by the three-dimensional data of the outer surface enables the radiation source signal to reach the target radiation parameters after passing through the antenna cover; and obtaining the antenna cover model according to the three-dimensional data of the inner surface and the three-dimensional data of the outer surface. The above method can widen the beam of the radiation source.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of antennas, in particular to an antenna cover model generation method, an antenna cover, a storage medium and a radio device. BACKGROUND

[0002] Taking the automatic parking function of a vehicle as an example, the vehicle can detect the drivable range of the vehicle through a radar sensor and then automatically park according to the drivable range. Generally, the radar is required to have a wide detection range in the automatic parking scenario. The wider the beam of the antenna of the radar is, the wider the detection range of the radar is. That is, the detection range of the radar can be increased by widening the beam of the antenna.

[0003] However, how to change the beam width of the antenna is a problem to be solved. SUMMARY

[0004] The present application provides an antenna cover model generation method, an antenna cover, a storage medium and a radio device to solve the problem of how to change the beam of the antenna.

[0005] In a first aspect, the present application provides an antenna cover model generation method, the antenna cover model comprising an inner surface and an outer surface, the inner surface of the antenna cover model enclosing a cavity to accommodate a radiation source in the cavity, the method comprising:

[0006] obtaining target radiation parameters, radiation parameters of the radiation source, and material parameters of a dielectric material used as the antenna cover; the radiation parameters of the radiation source comprising a preset beam width and / or a preset gain; the target radiation parameters comprising a target gain and / or a target beam width;

[0007] obtaining inner surface three-dimensional data of the antenna cover model according to the radiation parameters;

[0008] obtaining outer surface three-dimensional data of the antenna cover model according to the inner surface three-dimensional data, the target radiation parameters, the radiation parameters of the radiation source, and the material parameters; the outer surface of the antenna cover formed by the outer surface three-dimensional data of the antenna cover model enabling the radiation source signal to reach the target radiation parameters after passing through the outer surface of the antenna cover model;

[0009] obtaining the antenna cover model according to the inner surface three-dimensional data of the antenna cover model and the outer surface three-dimensional data of the antenna cover model.

[0010] Optionally, a cross-sectional shape of the cavity enclosed by the inner surface three-dimensional data of the antenna cover model is in the shape of a circular arc.

[0011] Optionally, the inner surface three-dimensional data of the radome model comprises three-dimensional data determined based on distances between each first sampling point on the inner surface of the radome model and the radiation source; and the outer surface three-dimensional data of the radome comprises three-dimensional data determined based on target distances between each first sampling point and a corresponding second sampling point.

[0012] Optionally, the outer surface three-dimensional data of the radome model is obtained according to the inner surface three-dimensional data, the preset radiation parameter, the target radiation parameter, and the material parameter, comprising:

[0013] The sampling radiation parameters of the radiation source signal at each beamwidth sampling point after the radiation source signal passes through the radome are simulated by using the inner surface three-dimensional data, the target radiation parameter, and the material parameter, and each beamwidth sampling point is set based on a spatial range set based on the target radiation parameter;

[0014] The target distance distributed between the inner surface and the outer surface of the radome model is determined when the gain of the simulated radiation source signal at each beamwidth sampling point after the radiation source signal passes through the radome meets a constraint condition set based on the target radiation parameter;

[0015] The outer surface three-dimensional data of the radome model is generated by using the distributed target distance and the inner surface three-dimensional data.

[0016] Optionally, the target distance distributed between the inner surface and the outer surface of the radome model is determined when the sampling radiation parameters of the radiation source signal at each beamwidth sampling point after the radiation source signal passes through the radome meet the constraint condition set based on the target radiation parameter, comprising:

[0017] A plurality of first sampling points on the inner surface of the radome model are selected, and each candidate distance corresponding to each first sampling point is initialized;

[0018] Each first sampling point and its candidate distance are input into a preset target function, and a sum of values of the preset target function corresponding to each beamwidth sampling point is obtained under the constraint condition; the constraint condition is that a piecewise constraint of the gain at any beamwidth sampling point is required;

[0019] At least one candidate distance is adjusted to maximize the sum of the values of the preset target function corresponding to each beamwidth sampling point under the constraint condition, and the target distance distributed between the inner surface and the outer surface of the radome model is determined accordingly.

[0020] Optionally, the target distance distributed between the inner surface and the outer surface of the radome model is determined when the gain of the simulated radiation source signal at each beamwidth sampling point after passing through the radome meets a constraint condition set based on the target radiation parameter, including:

[0021] The gain of any beamwidth sampling point is divided by the maximum gain among the gains of the beamwidth sampling points, to obtain the normalized gain of the beamwidth sampling point.

[0022] The target distance between the first sampling point and the corresponding second sampling point is obtained according to the normalized gain of the radiation source signal at each beamwidth sampling point after passing through the radome, and the constraint condition.

[0023] Optionally, the material parameter includes at least one of the following: insertion loss of the dielectric material to the radiation source signal, and insertion phase of the radiation source signal after passing through the radome.

[0024] Optionally, the target beamwidth is greater than a preset beamwidth of the radiation source; and / or, the target gain suppresses or compensates for a preset gain of the radiation source.

[0025] In a second aspect, the present application provides a computer readable storage medium, which stores a radome model obtained by the radome model generation method according to any one of the first aspect; or, the computer readable storage medium stores computer execution instructions, when the computer execution instructions are executed by a processor, the method according to any one of the first aspect is implemented.

[0026] In a third aspect, the present application provides a radome, which is prepared from a dielectric material, and includes an inner surface and an outer surface of the radome. The inner surface of the radome encloses a cavity to accommodate a radiation source in the cavity.

[0027] A preset distance distributed between the inner surface of the radome and the radiation source; the distributed preset distance is determined based on a preset beamwidth;

[0028] The shape of the outer surface of the radome is determined based on the distributed preset distance, a preset gain, a target radiation parameter, and a material parameter of the dielectric material; and the outer surface of the radome makes the radiation source signal pass through the outer surface of the radome to reach the target radiation parameter.

[0029] Optionally, a cross-sectional shape of the cavity enclosed by the inner surface of the radome is circular arc shape.

[0030] Optionally, the target beam width is greater than a preset beam width of the radiation source; and / or, the target gain suppresses or compensates a preset gain of the radiation source.

[0031] Optionally, a target beam width in the target radiation parameter is greater than a preset beam width of the radiation source; and / or, a target gain in the target radiation parameter suppresses or compensates a preset gain of the radiation source.

[0032] In a fourth aspect, the present application provides a radio device, comprising:

[0033] The radome according to any one of the third aspect;

[0034] A radiation source, which is accommodated in a cavity surrounded by the inner surface of the radome;

[0035] A signal transmitter, configured to provide a varying current signal to the radiation source, so that the radiation source radiates electromagnetic waves.

[0036] Optionally, the radio device is a radar sensor.

[0037] In a fifth aspect, the present application provides a device, comprising:

[0038] A device body; and

[0039] The radio device according to any one of the fourth aspect is arranged on the device body;

[0040] The radio device is configured to target detection and / or communication, and to provide reference information for operation of the device body.

[0041] In a sixth aspect, the present application provides a radome model generation device, the radome model comprising an inner surface and an outer surface, the inner surface of the radome model surrounding a cavity to accommodate a radiation source in the cavity, the device comprising:

[0042] A first acquisition module, configured to acquire target radiation parameters, radiation parameters of the radiation source, and material parameters of a dielectric material used as the radome; the radiation parameters of the radiation source include a preset beam width and / or a preset gain; the target radiation parameters include a target gain and / or a target beam width;

[0043] A processing module, configured to acquire inner surface three-dimensional data of the radome model according to the radiation parameters; and acquire outer surface three-dimensional data of the radome model according to the inner surface three-dimensional data, the target radiation parameters, the radiation parameters of the radiation source, and the material parameters; the outer surface of the radome constituted by the outer surface three-dimensional data of the radome model enables the radiation source signal to reach the target radiation parameters after passing through the outer surface of the radome model.

[0044] The second obtaining module is configured to obtain the radome model according to the inner surface three-dimensional data of the radome model and the outer surface three-dimensional data of the radome model.

[0045] In a seventh aspect, the present application provides an electronic device, comprising: at least one processor, a memory;

[0046] The memory stores computer-executable instructions.

[0047] The at least one processor executes the computer-executable instructions stored in the memory, so that the electronic device executes the method of any one of the first aspect.

[0048] The radome model generation method, the radome, the storage medium and the radio device provided by the present application can determine the inner surface three-dimensional data of the radome model through the preset beam width. Then, based on the inner surface three-dimensional data of the radome model, the preset gain, the material parameters of the dielectric material used as the radome, and the target beam width corresponding to the preset gain when the signal attenuation of the radiation source, the outer surface three-dimensional data of the radome can be determined. Through the above method, the inner surface three-dimensional data and the outer surface three-dimensional data of the radome model can be obtained, and the radome model can be generated. Then, based on the radome determined by the radome model, the radiation source signal can reach the target beam width after passing through the outer surface of the radome. Through the above method, the beam width of the antenna can be changed through the radome of the antenna without changing the antenna properties and the preset gain of the antenna signal. When the target beam width is smaller than the preset beam width, the radome with the same shape as the radome model generated based on the radome model generation method can realize the narrowing of the beam width of the radiation source. When the target beam width is greater than the preset beam width, the radome with the same shape as the radome model generated based on the radome model generation method can realize the widening of the beam width of the radiation source. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0050] Figure 1 A schematic diagram of a radome model structure is provided for the present application.

[0051] Figure 2 A schematic diagram of an antenna system structure is provided for the present application.

[0052] Figure 3 A flowchart of an antenna cover model generation method provided by the present application is shown in the following figure:

[0053] Figure 4 A planar structure diagram of an antenna cover model provided by the present application is shown in the following figure:

[0054] Figure 5 A flowchart of a method for obtaining the outer surface three-dimensional data of an antenna cover model provided by the present application is shown in the following figure:

[0055] Figure 6 A top view diagram of a microstrip patch antenna provided by the present application is shown in the following figure:

[0056] Figure 7 A laminated structure diagram of a microstrip patch antenna provided by the present application is shown in the following figure:

[0057] Figure 8 An H-plane normalized pattern of a microstrip patch antenna;

[0058] Figure 9 An H-plane normalized pattern of a microstrip patch antenna provided by the present application is shown in the following figure:

[0059] Figure 10 A structure diagram of an antenna cover model generation device provided by the present application is shown in the following figure:

[0060] Figure 11 A structure diagram of an electronic device provided by the present application is shown in the following figure.

[0061] The specific embodiments of the present application have been shown in the above figures, and will be described in more detail hereinafter. These figures and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be described clearly and completely in the following by referring to the figures in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative work, shall fall within the scope of protection of the present application.

[0063] The following explains some of the terms involved in the present application:

[0064] Radiation pattern of an antenna: The radiation pattern of an antenna refers to a pattern of the relative field strength of the radiation field of the antenna at a certain distance from the antenna, which changes with the direction. In the radiation pattern, the energy change of the radiation field is represented by the gain, and the angle range of the radiation field radiation is represented by the direction angle. The antenna gain is represented by the ratio of the power density of the signal generated by the actual antenna and the ideal antenna at the same point in space under the condition that the input power is equal. The antenna gain is used to measure the ability of the antenna to transmit and receive signals in a particular direction. When the antenna gain decreases by a preset gain threshold (such as -3dB), the angle range of the corresponding radiation field radiation is referred to as the beam width. For ease of description, the target gain of the radiation source after adding the radome, the preset gain (also referred to as the self gain) of the radiation source, and the target beam width of the radiation source after adding the radome, the preset beam width (also referred to as the self beam width) of the radiation source, and the like mentioned in the present application are all based on the above understanding and the context description.

[0065] Insertion loss: The gain loss of the antenna signal after passing through the radome.

[0066] Insertion phase: As a key characteristic parameter representing the electromagnetic window performance of the radome, the insertion phase can represent the phase difference of the radiation direction after the antenna signal passes through the radome.

[0067] With the increasing development of science and technology, intelligent driving technology has gradually become popular in people's daily life. Among them, sensors are the channel for the intelligent system of the vehicle to obtain external information, and play a key role in intelligent driving. Generally, different application scenarios have different requirements for sensors. For example, in the scenarios of automatic parking, parking space searching, or realizing 360° full-vehicle radar coverage of the vehicle, the vehicle has higher requirements for the detection range of the radar and other sensors. The detection range can also be referred to as the field of view (FOV).

[0068] Generally, a radar can include a transmitter, a receiver, a transmitting antenna, a receiving antenna, and a radome and the like. The beam width of the transmitting antenna of the radar is a factor that determines the detection range of the radar. The wider the beam width of the transmitting antenna of the radar, the larger the detection range of the radar. The narrower the beam width of the transmitting antenna of the radar, the smaller the detection range of the radar. Therefore, the detection range of the radar can be increased by widening the beam of the transmitting antenna.

[0069] However, how to change the beam width of the antenna is a problem to be solved.

[0070] Considering that the antenna beamwidth remains unchanged when the antenna properties are constant, but the inventors discovered through research that the antenna beamwidth changes after the signal passes through the radome, this application provides a method for generating a radome model to change the antenna beamwidth using the radome without altering the antenna properties and while ensuring the antenna signal gain. Changing the antenna beamwidth here can mean either widening or narrowing the antenna beamwidth.

[0071] Based on the above-described radome model generation method, a radome model can be obtained. The radome model is a data model that describes the spatial shape / structure of the radome using three-dimensional data, and it contains relationships between the radome and the radome's three-dimensional data and entities for manufacturing purposes. Therefore, the radome model mentioned in this application corresponds to the various structures, shapes, and positions within the radome based on these relationships.

[0072] The radome model includes an inner surface and an outer surface. The inner surface of the radome model can form a cavity to house a radiation source within the cavity. This radiation source can be a radar sensor containing the aforementioned antenna. The radome model is used to manufacture an radome for accommodating an antenna containing a radiation source. For simplicity, the radiation source housed in the radome model (or radome) also points in this direction.

[0073] Optionally, the cavity enclosed by the inner surface of the radome can be in a vacuum state, or the medium in the cavity can be air, water, etc.

[0074] For example, taking the cavity enclosed by the inner surface of the above-mentioned radome model as a semi-cylindrical cavity, Figure 1 This is a schematic diagram of a radome model structure provided in this application. Figure 1 As shown, the inner surface of the radome model can form a semi-cylindrical cavity, and the radiation source can be placed inside the semi-cylindrical cavity.

[0075] by Figure 1 The radome model shown is an example, for illustration purposes. Figure 2 This is a schematic diagram of an antenna system provided in this application. Figure 2 As shown, the antenna system may include a radome and a radiation source. The radiation source may be housed within a cavity formed by the inner surface of the radome.

[0076] It should be understood that Figure 1 and Figure 2The cavity surrounded by the inner surface of the radome model is only taken as an example of a semi-cylindrical cavity. In actual implementation, the cavity surrounded by the inner surface of the radome can also be a cylindrical cavity with a bottom smaller than a semi-circular arc, or a cylindrical cavity with a bottom larger than a semi-circular arc, or a quadrilateral cavity, a hexagonal cavity, or a cavity with other three-dimensional shapes, which aims to provide overall beam shaping and / or adjust the gain according to the body radiation range of the radiation source. For example, the cavity surrounded by the inner surface of the radome model can also be a spherical cavity.

[0077] In addition, it should be understood that the radome model provided by the present application is designed according to the shape of the radiation source, and the type of the radiation source and other radiation source attributes. The attributes include preset gain, beam width, and other radiation indicators of the radiation source. For example, the size, structure, and other parameters of the provided radome model and the corresponding radome are determined according to the shape, size, and attributes of the radiation source, which can be a rectangular patch radiation source, a circular patch radiation source, or a ring radiation source. Accordingly, the radome can be configured for radiation sources with the same or similar shape, size, and attributes to achieve the purpose of adjusting beam shaping and / or adjusting gain.

[0078] The technical solutions of the present application will be described in detail below in conjunction with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described in some embodiments. The execution subject of the radome model generation method provided by the present application can be a terminal or a server with processing function, or other electronic devices.

[0079] Figure 3 A flowchart of a radome model generation method provided by the present application is shown in FIG. 1. As shown in FIG. 1, the method includes the following steps: Figure 3

[0080] S101, obtaining target radiation parameters, radiation source radiation parameters, and material parameters of dielectric materials used as radomes.

[0081] The radiation parameters of the radiation source can include a preset beam width and / or a preset gain. The target radiation parameters can include target gain and / or target beam width provided by the radiation source signal under the joint action of the radome and the radiation source.

[0082] ​The preset beam width can be smaller than the target beam width, or can be larger than the target beam width. When the preset beam width is larger than the target beam width, an antenna cover with the same shape as the antenna cover model generated based on the antenna cover model generation method can realize narrowing of the beam width of the radiation source. When the preset beam width is smaller than the target beam width, an antenna cover with the same shape as the antenna cover model generated based on the antenna cover model generation method can realize widening of the beam width of the radiation source. The preset beam width can also be equivalent to the target beam width, and the target gain is inhibited or compensated to improve the signal stability of the radiation source in the same beam width.

[0083] In some embodiments, the material parameters of the dielectric material of the antenna cover can include at least one of the name of the dielectric material, the identification of the dielectric material, and the like.

[0084] As a possible implementation, the electronic device can obtain the target radiation parameters input by the user, the radiation parameters of the radiation source, and the material parameters of the dielectric material used as the antenna cover, through a graphical user interface (GUI), an application programming interface (API), or the like.

[0085] S102, obtaining the inner surface three-dimensional data of the antenna cover model according to the radiation parameters.

[0086] The inner surface of the antenna cover formed by the inner surface three-dimensional data of the antenna cover model is such that the beam width of the radiation source signal reaching the inner surface of the antenna cover model is equal to the preset beam width.

[0087] For example, the inner surface three-dimensional data of the antenna cover model can be the three-dimensional space coordinates of at least two sampling points on the inner surface of the antenna cover model. Alternatively, the inner surface three-dimensional data of the antenna cover model can include the distance between each first sampling point on the inner surface of the antenna cover model and the radiation source. In this implementation, the inner surface three-dimensional data of the antenna cover model can also include the three-dimensional space coordinates of the radiation source.

[0088] As a possible implementation, the electronic device can store preset simulation software that can output the distance between the position reaching the beam width and the radiation source based on the input beam width. After obtaining the preset beam width, the electronic device can input the preset beam width into the preset simulation software to obtain the inner surface three-dimensional data of the antenna cover model.

[0089] It should be understood that the preset simulation software is not limited to outputting the inner surface three-dimensional data of the radome model based on the preset beam width. For example, the preset simulation software can also output the inner surface three-dimensional data of the radome model based on the preset beam width and the wavelength of the radiation source signal.

[0090] Optionally, the cross-sectional shape of the cavity surrounded by the inner surface three-dimensional data of the radome model can be circular arc shape. By determining the cavity surrounded by the inner surface three-dimensional data of the radome model in a circular arc shape, the reflection of the antenna signal by the radome can be reduced, thereby reducing the energy loss of the antenna signal caused by the radome.

[0091] S103, obtaining outer surface three-dimensional data of the radome model according to the inner surface three-dimensional data, the radiation parameters, the target radiation parameters, and the material parameters.

[0092] The outer surface of the radome formed by the outer surface three-dimensional data of the radome model allows the radiation source signal to reach the target radiation parameters after passing through the outer surface of the radome model. To this end, the outer surface three-dimensional data is determined by simulating the beam width and gain of the radiation source signal when it reaches the inner surface of the radome, and simulating the radiation source signal passing through the outer surface of the radome to meet the target beam width and / or target gain.

[0093] The simulation method includes, for example, a finite element algorithm, a machine learning algorithm, or a data processing process using an iterative algorithm such as a random forest.

[0094] For example, the outer surface three-dimensional data of the radome model can be the three-dimensional space coordinates of at least two sampling points on the outer surface of the radome model.

[0095] For example, the outer surface three-dimensional data of the radome model can include a target distance between each first sampling point and a corresponding second sampling point. The second sampling point is the intersection point of the straight line between the radiation source and any first sampling point on the inner surface of the radome model and the outer surface.

[0096] For example, the cross-section of the cavity surrounded by the inner surface of the radome model is semicircular, and the radiation source is arranged at the center of the semicircle. Figure 4 A planar structure schematic diagram of a radome model is provided in the present application. As shown in Figure 4As shown, taking the center O of the above-mentioned semicircular bottom surface as the position of the radiation source as an example, the intersection line between the cross section of the radome model and the inner surface includes at least one first sampling point n. The center O of the semicircular bottom surface and the first sampling point n are on a straight line On. By means of simulation calculation, the target distance between the first sampling point and the straight line On is calculated, and the outer surface point N of the radome model is determined according to the target distance, and the point N can be used as the second sampling point corresponding to the first sampling point n.

[0097] In some examples, the electronic device obtains the intersection line between the cross section of the radome model and the outer surface by fitting the obtained connecting line of the second sampling points. In other examples, the electronic device simulates the second sampling points on the outer surface by using different positions of the cross section along the total length of the antenna (or antenna array) of the radiation source, to obtain a plurality of sets of three-dimensional data of the second sampling points on the outer surface.

[0098] S104, obtaining the radome model according to the three-dimensional data of the inner surface of the radome model and the three-dimensional data of the outer surface of the radome model.

[0099] After obtaining the three-dimensional data of the outer surface of the radome model, the electronic device can generate the radome model by using target software capable of drawing a three-dimensional model corresponding to the three-dimensional data.

[0100] In some examples, the electronic device calculates the offset data of the three-dimensional data of the second sampling points on the intersection line obtained in step S103 at different positions along the length of the antenna (or antenna array) of the radiation source, and obtains the three-dimensional data of the outer surface according to the offset data; and obtains the radome model by using the boundary described by the three-dimensional data of the inner surface and the three-dimensional data of the outer surface.

[0101] In yet other examples, the electronic device performs closed surface processing on each first sampling point and each second sampling point obtained by simulation along the length of the antenna (or antenna array) of the radiation source, to obtain the above-mentioned radome model. The first sampling points and the second sampling points are processed by using a triangular patch splicing method to obtain the radome model.

[0102] The radome model obtained by using the method in any of the above examples can be used to provide corresponding manufacturing data such as size and shape for manufacturing the radome, and assembly data when the radiation source is assembled with the radome, so that the radiation source signal can reach the above-mentioned target radiation parameters after passing through the outer surface of the radome.

[0103] By the above method, the beam width of the antenna is changed through the radome of the antenna without changing the antenna property and ensuring the gain of the antenna signal. When the target beam width is smaller than the preset beam width, the same radome with the radome model shape obtained based on the radome model generation method can realize the reduction of the beam width of the radiation source. When the target beam width is greater than the preset beam width, the same radome with the radome model shape obtained based on the radome model generation method can realize the widening of the beam width of the radiation source.

[0104] The following describes how the electronic device obtains the outer surface three-dimensional data of the radome model according to the inner surface three-dimensional data, the radiation parameter, the target radiation parameter, and the material parameter.

[0105] Figure 5 A method flowchart for obtaining the outer surface three-dimensional data of the radome model is provided in the present application. As shown in Figure 5 As a possible implementation manner, the foregoing step S103 can include the following steps.

[0106] S201: The inner surface three-dimensional data, the target radiation parameter, and the material parameter are used to simulate the sampling radiation parameters of the radiation source signal at each beam width sampling point after passing through the radome.

[0107] Each beam width sampling point is set based on the spatial range set according to the target radiation parameter.

[0108] For example, as shown in Figure 4 For example, as shown in the above, the radiation source is arranged at the position bisecting the axis of the cavity surrounded by the inner surface of the radome model, and the midpoint of the line connecting the two endpoints of the lowermost end of the cavity is taken as an example. Optionally, it is assumed that the number of the first sampling points is 17, and the preset first function can be, for example, as shown in the following formula (1):

[0109]

[0110] wherein, pha n and pha1 n are the imaginary parts of the preset first function, pha n represents the phase delay of the first sampling point and the antenna at the incident angle θ, and pha1 n represents the phase delay of the first sampling point and the corresponding second sampling point at the incident angle θ. Wherein, For any beam width sampling point, θ is 0.5 times the beam width sampling point. nis an angle between the first straight line and the second straight line. For any first sampling point, the first straight line is a straight line passing through a midpoint of a line segment connecting two end points of the lowermost end of the arc, and the second straight line is a straight line passing through the two end points of the lowermost end of the arc. Figure 4 is a straight line on which the center line segment on lies. The second straight line is a straight line passing through the two end points of the lowermost end of the arc. Figure 4 is a straight line on which the center line segment A1A2 lies. Optionally, R represents a distance between the first sampling point and the radiation source, as shown by a length of the line segment on. Figure 4 λ0 represents a wavelength of the radiation source signal, and T n represents a distance between the first sampling point and the corresponding second sampling point, as shown by a length of the line segment nN. Figure 4 mag n represents an amplitude distribution of the first sampling point. Optionally, the mag n may be pre-stored in the electronic device. E(θ) represents a gain of the simulated radiation source signal passing through the antenna cover model corresponding to the antenna cover at the beam width sampling point.

[0111] It should be understood that the above formula (1) is an exemplary description of the preset first function taking 17 first sampling points as an example. In a specific implementation, the electronic device can also select a larger or smaller number of first sampling points from the three-dimensional data of the inner surface of the antenna cover. The accuracy of the determined three-dimensional data of the outer surface of the antenna cover is positively correlated with the number of first sampling points. The amount of calculation of the electronic device is also positively correlated with the number of first sampling points.

[0112] S202, when the gain of the simulated radiation source signal passing through the antenna cover at each beam width sampling point meets the constraint condition set based on the target radiation parameter, determining a target distance distributed between the inner surface and the outer surface of the antenna cover model.

[0113] Considering that the gains at different angles and equal distances from the radiation source within the beam width range are substantially the same, the target distance distributed between the inner surface and the outer surface of the antenna cover model represents a position relationship between each first sampling point of the sampling inner surface and a corresponding second sampling point of the to-be-determined outer surface distributed according to a preset angle step. When the gain of the simulated radiation source signal passing through the antenna cover at each beam width sampling point meets the constraint condition set based on the target radiation parameter, the target distance distributed between the inner surface and the outer surface of the antenna cover model is determined.

[0114] In some examples, the electronic device simulates a curve or a surface that makes the gain of each beam width sampling point meet the target radiation parameter by gradually adjusting the cross-sectional curve of the outer surface or the surface parameters, to obtain the corresponding target distance distributed.

[0115] In some examples, the electronic device can select a plurality of first sampling points on the inner surface of the radome model, and initialize a candidate distance corresponding to each of the first sampling points. The electronic device can select the plurality of first sampling points on the inner surface of the radome model in a random manner, or at preset intervals, for example.

[0116] The electronic device can then input each of the first sampling points and the candidate distance corresponding thereto into a preset objective function, and obtain a sum of values of the preset objective function corresponding to each of the beamwidth sampling points under the constraint condition.

[0117] The constraint condition can be a piecewise constraint on the gain at any of the beamwidth sampling points. For example, the constraint condition can be that if the gain at the beamwidth sampling point is greater than or equal to a preset gain, the value of the preset objective function corresponding to the beamwidth sampling point is equal to a first target value. If the gain at the beamwidth sampling point is less than the preset gain, the value of the preset objective function corresponding to the beamwidth sampling point is equal to a second target value. It should be understood that the specific values of the first target value and the second target value are not limited in the present application. For example, the first target value can be any constant greater than 0, and the second target value can be any constant less than 0.

[0118] The electronic device can then adjust at least one of the candidate distances under the constraint condition, so that the sum of the values of the preset objective function corresponding to each of the beamwidth sampling points is maximum, and determine the target distance distributed between the inner surface and the outer surface of the radome model according to the adjustment.

[0119] For example, the electronic device can adjust at least one of the candidate distances under the constraint condition by using a preset optimization algorithm, so that the sum of the values of the preset objective function corresponding to each of the beamwidth sampling points is maximum. The preset optimization algorithm can be a genetic algorithm (GA), a particle swarm optimization (PSO) algorithm, or the like.

[0120] In some embodiments, the sum of the values of the preset objective function corresponding to each of the beamwidth sampling points is positively correlated with the number of beamwidth sampling points whose gain is greater than or equal to the preset gain. For example, the sum of the values of the preset objective function corresponding to each of the beamwidth sampling points can be as shown in the following formula (2):

[0121] M = å θ H(θ) (2)

[0122] H(0) is a piecewise function. Specifically, the value of H(0) corresponding to the beamwidth sampling point with gain greater than or equal to the preset gain is a preset positive number, and the value of H(0) corresponding to the beamwidth sampling point with gain less than the preset gain is a negative number with an absolute value equal to the preset positive number. For example, the value of H(0) corresponding to the beamwidth sampling point with gain greater than or equal to the preset gain can be 1, and the value of H(0) corresponding to the beamwidth sampling point with gain less than the preset gain can be -1.

[0123] Optionally, in some embodiments, the electronic device may, for example, further acquire at least one set of distances between each first sampling point and the corresponding second sampling point such that the sum of the values of the preset target function is greater than the preset value. Then, the electronic device can determine, from the at least one set of distances between each first sampling point and the corresponding second sampling point, a set of distances between each first sampling point and the corresponding second sampling point as the target distance distributed between the inner surface and the outer surface of the radome model.

[0124] It should be understood that the present application does not limit how the electronic device determines, from the at least one set of distances between each first sampling point and the corresponding second sampling point, a set of distances between each first sampling point and the corresponding second sampling point as the target distance distributed between the inner surface and the outer surface of the radome model. For example, the electronic device may, for example, randomly determine, from the at least one set of distances between each first sampling point and the corresponding second sampling point, a set of distances between each first sampling point and the corresponding second sampling point as the target distance distributed between the inner surface and the outer surface of the radome model.

[0125] S203, generating the outer surface three-dimensional data of the radome model by using the distributed target distance and the inner surface three-dimensional data.

[0126] The electronic device can generate the outer surface three-dimensional data of the radome model by fitting according to the distributed target distance and the inner surface three-dimensional data through a preset fitting algorithm. The preset fitting algorithm can be pre-stored in the electronic device by the user. Optionally, the preset fitting algorithm can be any existing fitting algorithm, such as a least square fitting algorithm.

[0127] As another possible implementation, the aforementioned material parameters may, for example, include at least one of the following: the insertion loss of the dielectric material to the radiation source signal, the insertion phase of the radiation source signal after passing through the radome.

[0128] In this implementation, taking an example of the material parameter including the insertion loss of the dielectric material to the radiation source signal, and the insertion phase of the radiation source signal after passing through the radome, the electronic device can adjust the preset first function according to the insertion loss of the dielectric material to the radiation source signal, and the insertion phase of the radiation source signal after passing through the radome, to obtain an adjusted first function. The adjusted first function can simulate the gain of the radiation source signal at each beamwidth sampling point after passing through the radome based on the insertion loss of the dielectric material to the radiation source signal, and the insertion phase of the radiation source signal after passing through the radome.

[0129] Then, the electronic device can input the inner surface three-dimensional data, the target radiation parameter, and the material parameter, and each beamwidth sampling point into the adjusted function, to simulate the gain of the radiation source signal at each beamwidth sampling point after passing through the radome.

[0130] For example, assuming that the preset function is as shown in the above formula (1), the adjusted first function can be as shown in the following formula (3) based on the insertion loss of the dielectric material to the radiation source signal, and the insertion phase of the radiation source signal after passing through the radome:

[0131]

[0132] wherein, λ g represents the corresponding wavelength of the radiation source signal propagating in the radome medium. tan δ represents the corresponding loss tangent of the radome medium. wherein, represents the insertion loss of the dielectric material to the radiation source signal. represents the insertion phase of the radiation source signal after passing through the radome. The other parameters in formula (3) represent the same meaning as in formula (1), which will not be described here.

[0133] Further, as a possible implementation, for the gain of any beamwidth sampling point, the electronic device can also normalize the gain of the beamwidth sampling point, so that the gain of each beamwidth sampling point is less than 1, thereby improving the efficiency of the electronic device in subsequent processing of the gain of the radiation source signal at each beamwidth sampling point after passing through the radome.

[0134] Optionally, for the gain of any beamwidth sampling point, the electronic device can divide the gain of the beamwidth sampling point by the maximum gain among the gains of each beamwidth sampling point, to obtain the normalized gain of the beamwidth sampling point. Then, the electronic device can obtain the target distance between each first sampling point and the corresponding second sampling point according to the normalized gain of the radiation source signal at each beamwidth sampling point after passing through the radome, and the above constraint condition.

[0135] For example, the electronic device can obtain the normalized gain of the beamwidth sampling point by the following formula (4):

[0136]

[0137] wherein E(θ) represents the gain of any beamwidth sampling point, E max (θ) represents the maximum gain among the gains of the beamwidth sampling points. G represents the normalized gain of the beamwidth sampling point.

[0138] Still taking the cavity surrounded by the inner surface of the radome as a semi-cylindrical cavity and the cavity penetrating through the opposite two sidewalls of the radome as an example, the application further provides another method for generating a radome model, which comprises the following steps:

[0139] Step 1: obtaining a planar modeling result of the radome model.

[0140] For example, the planar modeling result of the radome model can be as shown in the foregoing Figure 4 The planar modeling abstracts the actual antenna as the point O shown in the following Figure 6

[0141] For example, the actual antenna can be a microstrip patch antenna, Figure 7 which is a top view schematic diagram of a microstrip patch antenna provided by the application. Figure 6 which is a schematic diagram of the laminated structure of a microstrip patch antenna provided by the application. For example, the length direction of the microstrip patch antenna is the same as the axial direction of the semi-cylindrical cavity. Figure 7 and Figure 8 For example, taking the microstrip patch antennas shown in the foregoing Figure 9 which is the H-plane normalized pattern of the microstrip patch antenna.

[0142] Step 2: determining a plurality of first sampling points and the second sampling points corresponding to each first sampling point according to the planar modeling result of the radome model.

[0143] Step 3: obtaining the radiation parameters of the radiation source and the material parameters of the dielectric material used as the radome, and obtaining the inner surface three-dimensional data of the radome model according to the radiation parameters.

[0144] Step 4: inputting the inner surface three-dimensional data, the target radiation parameters, the material parameters, the insertion loss of the dielectric material to the radiation source signal, the insertion phase of the radiation source signal after penetrating through the radome into the adjusted function to simulate the gain of the radiation source signal at each beamwidth sampling point after penetrating through the radome.

[0145] For example, each beamwidth sampling point is located within the target beamwidth.​

[0146] wherein the adjusted first function can be, for example, as shown in the aforementioned equation (3).

[0147] Step 5, for the gain of any beamwidth sampling point, divide the gain of the beamwidth sampling point by the maximum gain among the gains of the beamwidth sampling points, to obtain the normalized gain of the beamwidth sampling point.

[0148] Step 6, obtain another expression of the gain of each beamwidth sampling point by the following equation (5).

[0149] F(θ) = 20lg G (5)

[0150] wherein G represents the gain of the normalized antenna signal after passing through the radome at each beamwidth sampling point. F(θ) is another expression of the gain of each beamwidth sampling point.

[0151] Step 7, the value of H(θ) corresponding to the beamwidth sampling point with a gain greater than or equal to the preset gain is equal to 1, and the value of H(θ) corresponding to the beamwidth sampling point with a gain less than the preset gain is equal to -1, and the sum of the values of the preset target function corresponding to each beamwidth sampling point is obtained by the above equation (2).

[0152] Step 8, obtain the target distance between each first sampling point and the corresponding second sampling point that makes the sum of the values of the above preset target function maximum. Then take the target distance between each first sampling point and the corresponding second sampling point that makes the value of the target function maximum as the target distance between each first sampling point and the corresponding second sampling point.

[0153] Step 9, determine the three-dimensional data of the outer surface of the radome according to the target distance between each first sampling point and the corresponding second sampling point, and the radius of the base surface of the semi-cylindrical shape.

[0154] Step 10, output the three-dimensional data of the outer surface of the radome, and the radius of the base surface of the semi-cylindrical shape.

[0155] Step 11, input the three-dimensional data of the outer surface of the radome, and the radius of the base surface of the semi-cylindrical shape into the 3D full-wave simulation software, and output the gain of each beamwidth sampling point after the antenna signal passes through the radome determined according to the three-dimensional data of the outer surface of the radome, and the radius of the base surface of the semi-cylindrical shape.

[0156] Exemplarily, Figure 9 An H-plane normalized directional diagram of a microstrip patch antenna provided in the present application, wherein the solid line represents a preset radiation directional diagram of a radiation source without a radome; and the dashed line represents a target radiation directional diagram of a radiation source with a radome. As shown in Figure 10As shown, the beam width of the antenna without radome is -60° to 60° at the 6dB drop on both sides of the maximum gain, that is, the FOV is equal to 120°. The beam width of the antenna with radome is -77° to 77°, that is, the FOV is equal to 157°. 157 is greater than 120, and therefore, the radome generated by the radome model generation method provided in the present application can widen the beam of the antenna.

[0157] The present application also provides a radome made of dielectric material. The radome can include an inner surface and an outer surface of the radome. The inner surface of the radome encloses a cavity to accommodate the radiation source in the cavity.

[0158] The inner surface of the radome is spaced apart from the radiation source by a predetermined distance. The predetermined distance is determined based on a predetermined beam width. The inner surface of the radome is such that the beam width of the radiation source signal reaching the inner surface of the radome model is equal to the predetermined beam width. The specific method of determining the predetermined distance based on the predetermined beam width can refer to the method described in the foregoing embodiments, which will not be described here.

[0159] The shape of the outer surface of the radome is determined based on the predetermined distance, the predetermined radiation parameters, the target radiation parameters, and the material parameters of the dielectric material. The outer surface of the radome is such that the radiation source signal reaches the target radiation parameters after passing through the outer surface of the radome. In some embodiments, as described above, the target beam width in the target radiation parameters can be greater than the predetermined beam width of the radiation source. And / or, the target gain in the target radiation parameters compensates for or compensates for the predetermined gain of the radiation source.

[0160] Optionally, the way to determine the shape of the outer surface of the radome based on the predetermined distance, the predetermined radiation parameters, the target radiation parameters, and the material parameters of the dielectric material can refer to the radome model generation method described in the foregoing embodiments, which will not be described here.

[0161] In some embodiments, the inner surface of the radome can enclose a circular arc-shaped cross-sectional shape of the cavity to accommodate the antenna in the cavity. By enclosing the inner surface of the radome into a circular arc-shaped cavity, the reflection of the radiation source signal by the radome can be reduced, thereby reducing the energy loss of the radiation source signal caused by the radome.

[0162] The dielectric material for making the above-mentioned radome is not limited in the present application. For example, the material for making the radome can be any existing material that can be used as the radome of an antenna, such as Fiberglass Rainforced Plastics (FRP), ABS plastic (wherein A refers to acrylonitrile, B refers to butadiene, and S refers to styrene, and the ABS material is a terpolymer of the three monomers), polybutylene terephthalate (PBT), and the like.

[0163] Figure 10 A structural schematic diagram of a radome model generation device is provided in the present application. As shown in the figure, Figure 11 the device comprises a first obtaining module 301, a processing module 302, and a second obtaining module 303. Among them,

[0164] The first obtaining module 301 is configured to obtain target radiation parameters, radiation parameters of a radiation source, and material parameters of a dielectric material used as the radome. Among them, the radiation parameters of the radiation source include a preset beam width and / or a preset gain; the target radiation parameters include a target gain and / or a target beam width.

[0165] The processing module 302 is configured to obtain inner surface three-dimensional data of the radome model according to the radiation parameters; and obtain outer surface three-dimensional data of the radome model according to the inner surface three-dimensional data, the target radiation parameters, the radiation parameters of the radiation source, and the material parameters. Among them, the outer surface of the radome constituted by the outer surface three-dimensional data of the radome model makes the radiation source signal reach the target radiation parameters after passing through the outer surface of the radome model.

[0166] The second obtaining module 303 is configured to obtain a radome model according to the inner surface three-dimensional data of the radome model and the outer surface three-dimensional data of the radome model.

[0167] Among them, the first obtaining module 301, the processing module 302, and the second obtaining module 303 can execute the related steps in the above-mentioned generation method; and the corresponding introduction is applied herein.

[0168] Optionally, a cross-sectional shape of a cavity surrounded by the inner surface three-dimensional data of the radome model is in the shape of a circular arc.

[0169] Optionally, the inner surface three-dimensional data of the radome model includes three-dimensional data determined based on distances between each first sampling point on the inner surface of the radome model and the radiation source; and the outer surface three-dimensional data of the radome includes three-dimensional data determined based on target distances between each first sampling point and a corresponding second sampling point.

[0170] Optionally, the processing module 302 is specifically configured to simulate, by using the inner surface three-dimensional data, the target radiation parameter, and the material parameter and the set beam width sampling points, a sampling radiation parameter of the radiation source signal at each beam width sampling point after the radiation source signal passes through the radome; determine the target distance distributed between the inner surface and the outer surface of the radome model when a gain of the simulated radiation source signal at each beam width sampling point after the radiation source signal passes through the radome meets a constraint condition set based on the target radiation parameter; and generate outer surface three-dimensional data of the radome model by using the distributed target distance and the inner surface three-dimensional data. Each of the beam width sampling points is set based on a spatial range set based on the target radiation parameter.

[0171] Optionally, the processing module 302 is specifically configured to select a plurality of first sampling points on the inner surface of the radome model, and initialize each candidate distance corresponding to each first sampling point; input each first sampling point and the candidate distance thereof into a preset target function, and obtain a sum of values of the preset target function corresponding to each beam width sampling point under constraint of a constraint condition; adjust at least one candidate distance to maximize the sum of the values of the preset target function corresponding to each beam width sampling point under the constraint of the constraint condition; and determine the target distance distributed between the inner surface and the outer surface of the radome model according to the adjustment. The constraint condition is a piecewise constraint for a gain at any beam width sampling point.

[0172] Optionally, the processing module 302 is specifically configured to, for a gain at any beam width sampling point, divide the gain at the beam width sampling point by a maximum gain in the gains at the beam width sampling points to obtain a normalized gain at the beam width sampling point; and obtain the target distance between each first sampling point and a corresponding second sampling point according to the normalized gain at each beam width sampling point of the radiation source signal after the radiation source signal passes through the radome and the constraint condition.

[0173] Optionally, the material parameter includes at least one of an insertion loss of the dielectric material to the radiation source signal and an insertion phase of the radiation source signal after passing through the radome.

[0174] Optionally, the target beam width is greater than a preset beam width of a radiation source, and / or the target gain suppresses or compensates for a preset gain of the radiation source.

[0175] The radome model generation device provided in the present application is used to execute the radome model generation method embodiments, and has similar implementation principles and technical effects, which will not be described herein.

[0176] Figure 11An electronic device structure diagram is provided in the present application. As shown in ​ The electronic device 400 can include at least one processor 401 and a memory 402.

[0177] The memory 402 is configured to store a program. Specifically, the program can include program code, and the program code includes computer operation instructions.

[0178] The memory 402 can include a high-speed RAM memory, and can also include a non-volatile memory, for example, at least one disk memory.

[0179] The processor 401 is configured to execute the computer operation instructions stored in the memory 402, so as to implement the antenna cover model generation method described in the foregoing method embodiments. The processor 401 can be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0180] Optionally, the electronic device 400 can further include a communication interface 403. In a specific implementation, if the communication interface 403, the memory 402 and the processor 401 are independently implemented, the communication interface 403, the memory 402 and the processor 401 can be connected with each other through a bus and complete communication between each other. The bus can be an industry standard architecture (ISA) bus, a peripheral component (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc., but it does not mean that there is only one bus or one type of bus.

[0181] Optionally, in a specific implementation, if the communication interface 403, the memory 402 and the processor 401 are integrated on a chip, the communication interface 403, the memory 402 and the processor 401 can complete communication through an internal interface.

[0182] The application further provides an antenna system, comprising a radiation source and a radome. The inner surface of the radome forms a circular arc-shaped cavity, in which the radiation source is accommodated. The cavity penetrates through opposite sidewalls of the radome. The radome has a shape obtained based on the radome model generation method.

[0183] It should be understood that the application does not limit the application scenarios of the antenna system. For example, the antenna system can be applied to scenarios such as vehicles, airports, underwater exploration, radars on satellites, and the like.

[0184] The application further provides a radio device, comprising a radiation source, a radome as described in any of the preceding embodiments, and a signal transmitter. The radiation source is accommodated in the cavity formed by the inner surface of the radome. The signal transmitter is configured to provide a varying current signal to the radiation source, so that the radiation source radiates electromagnetic waves.

[0185] Optionally, the radio device can be a radar sensor. For example, the radar sensor can be a millimeter wave radar, an over-the-horizon radar, a microwave radar, or the like radar sensor based on radio technology.

[0186] The application further provides a device, comprising a device body and a radio device as described in any of the preceding embodiments arranged on the device body. The radio device is configured to detect targets and / or communicate, and provide reference information for operation of the device body.

[0187] In some embodiments, the device can be a vehicle.

[0188] The application further provides a computer-readable storage medium, which can include a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like medium that can store program codes. Specifically, the computer-readable storage medium stores program instructions. The program instructions are used for the method in the above embodiments.

[0189] Alternatively, the computer-readable storage medium can store a radome model obtained based on the radome model generation method according to any of the preceding embodiments.

[0190] The application further provides a program product, which comprises execution instructions stored in a readable storage medium. At least one processor of an electronic device can read the execution instructions from the readable storage medium. The at least one processor executes the execution instructions to make the electronic device implement the radome model generation method provided in the various embodiments.

[0191] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for generating a radome model, the method comprising: The antenna cover model comprises an inner surface and an outer surface, the inner surface of the antenna cover model encloses a cavity to accommodate a radiation source in the cavity, and the method comprises: obtaining target radiation parameters, radiation parameters of the radiation source, and material parameters of dielectric material used for the antenna cover; the radiation parameters of the radiation source comprise a preset beam width and / or a preset gain; the target radiation parameters comprise target gain and / or target beam width; obtaining three-dimensional data of the inner surface of the antenna cover model according to the radiation parameters; obtaining three-dimensional data of the outer surface of the antenna cover model according to the three-dimensional data of the inner surface, the target radiation parameters, the radiation parameters of the radiation source, and the material parameters; the outer surface of the antenna cover formed by the three-dimensional data of the outer surface of the antenna cover model enables the radiation source signal to reach the target radiation parameters after passing through the outer surface of the antenna cover model; obtaining the antenna cover model according to the three-dimensional data of the inner surface of the antenna cover model and the three-dimensional data of the outer surface of the antenna cover model.

2. The method of claim 1, wherein, The cross-sectional shape of the cavity enclosed by the three-dimensional data of the inner surface of the antenna cover model is in the shape of a circular arc.

3. The method according to claim 1 or 2, characterized in that, The three-dimensional data of the inner surface of the antenna cover model comprises three-dimensional data determined based on distances between each first sampling point on the inner surface of the antenna cover model and the radiation source; and the three-dimensional data of the outer surface of the antenna cover comprises three-dimensional data determined based on target distances between each first sampling point and a corresponding second sampling point.

4. The method of claim 1, wherein, The obtaining of the three-dimensional data of the outer surface of the antenna cover model according to the three-dimensional data of the inner surface, the preset radiation parameters, the target radiation parameters, and the material parameters comprises: simulating, by using the three-dimensional data of the inner surface, the target radiation parameters, and the material parameters, sampling radiation parameters of the radiation source signal at each beam width sampling point after passing through the antenna cover, each beam width sampling point being set based on a spatial range set according to the target radiation parameters; determining target distances distributed between the inner surface and the outer surface of the antenna cover model when the gain of the simulated radiation source signal at each beam width sampling point after passing through the antenna cover meets a constraint condition set according to the target radiation parameters; generating the three-dimensional data of the outer surface of the antenna cover model by using the distributed target distances and the three-dimensional data of the inner surface.

5. The method of claim 4, wherein, The determining of the target distances distributed between the inner surface and the outer surface of the antenna cover model when the sampling radiation parameters of the simulated radiation source signal at each beam width sampling point after passing through the antenna cover meet the constraint condition set according to the target radiation parameters comprises: selecting a plurality of first sampling points on the inner surface of the antenna cover model and initializing each candidate distance corresponding to each first sampling point; inputting each first sampling point and its candidate distance into a preset target function to obtain a sum of values of the preset target function corresponding to each beam width sampling point under the constraint condition; the constraint condition is a piecewise constraint on the gain at any beam width sampling point. Under the constraint condition, at least one candidate distance is adjusted so that a sum of values of the preset target function corresponding to the beamwidth sampling points is maximum; and the target distance distributed between the inner surface and the outer surface of the radome model is determined according to the adjusted at least one candidate distance.

6. The method of claim 4, wherein, The target distance distributed between the inner surface and the outer surface of the radome model is determined when the gain of the simulated radiation source signal at each beamwidth sampling point after passing through the radome meets the constraint condition set based on the target radiation parameter, and the target distance distributed between the inner surface and the outer surface of the radome model comprises: For the gain of any beamwidth sampling point, the gain of the beamwidth sampling point is divided by the maximum gain in the gains of the beamwidth sampling points to obtain the normalized gain of the beamwidth sampling point; The target distance between each first sampling point and the corresponding second sampling point is obtained according to the normalized gain of the radiation source signal at each beamwidth sampling point after passing through the radome and the constraint condition.

7. The method of claim 1, wherein, The material parameter includes at least one of the insertion loss of the dielectric material to the radiation source signal and the insertion phase of the radiation source signal after passing through the radome.

8. The method of claim 1, wherein, The target beamwidth is greater than a preset beamwidth of the radiation source; and / or the target gain suppresses or compensates for a preset gain of the radiation source.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores the radome model obtained according to the radome model generation method of any one of claims 1-8; or the computer readable storage medium stores computer execution instructions, and when the computer execution instructions are executed by the processor, the method of any one of claims 1-8 is implemented.

10. A radome, characterized by, The radome is made of dielectric material, and the radome includes an inner surface and an outer surface of the radome, and the inner surface of the radome encloses a cavity to accommodate the radiation source in the cavity. The preset distance distributed between the inner surface of the radome and the radiation source; The distributed preset distance is determined based on a preset beamwidth; The shape of the outer surface of the radome is determined based on the distributed preset distance, a preset gain, the target radiation parameter, and a material parameter of the dielectric material; and the outer surface of the radome enables the radiation source signal to pass through the outer surface of the radome to reach the target radiation parameter.

11. The antenna cover of claim 10, wherein, The radome includes an inner surface and an outer surface, and the inner surface of the radome encloses a cavity to accommodate the radiation source in the cavity.

12. The antenna cover of claim 10, wherein, The target beamwidth in the target radiation parameter is greater than a preset beamwidth of the radiation source; and / or the target gain in the target radiation parameter suppresses or compensates for a preset gain of the radiation source.

13. A radio device, characterized by The radome comprises: The radome of any one of claims 10-12; The radiation source is accommodated in the cavity enclosed by the inner surface of the radome; The signal transmitter is configured to provide a varying current signal to the radiation source to enable the radiation source to radiate electromagnetic waves.

14. The radio device of claim 13, wherein, The radio device is a radar sensor.

15. An apparatus, comprising: The device body; And The radio device of any one of claims 13 or 14 is arranged on the device body; The radio device is configured to detect a target and / or communicate, and provide reference information for operation of the device body. ​

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