Cylindrical synthetic aperture layout method and device, antenna array device, electronic device and storage medium

Abstract

The present application provides a layout method and apparatus for a cylindrical synthetic aperture based on a multi-angle arc array, an antenna array device, an electronic device, and a storage medium. The method comprises: determining the antenna unit size and adjacent antenna unit spacing in a linear antenna array; determining basic parameters of the linear antenna array and an annular array base based on the antenna unit size and adjacent antenna unit spacing, and arranging the linear antenna array around an annular array on the annular array base based on the basic parameters to obtain the multi-angle arc array; and determining the motion parameters of the annular array based on the antenna unit size to obtain a cylindrical synthetic aperture. The present application has low structural complexity and low production cost. It can also be adjusted and modified according to actual needs, thereby increasing the profitability of the constructed antenna equipment and significantly improving the detection performance of the radar antenna system.

Description

Technical Field

[0001] The present application relates to the field of radar signal processing technology, and in particular to a layout method and device for a cylindrical synthetic aperture based on a multi-angle arc array, an antenna array device, an electronic device, and a storage medium. Background Art

[0002] To address the limited wide-area observation capabilities of linear array synthetic aperture radars, researchers have proposed a synthetic aperture imaging system based on an arc array. This system overcomes the limitations of traditional linear array observation mechanisms by arranging array antenna elements at equal angles along a circular arc with a fixed radius, fully utilizing the platform space and significantly improving antenna gain and the detection performance of the radar antenna system.

[0003] However, the structure of the synthetic aperture imaging system based on the arc array is relatively complex. The complex geometric configuration adopted will directly affect the input impedance of the antenna. Its smooth and gradually changing arc geometric carrier and delicate and complex appearance structure greatly increase the difficulty of electromagnetic analysis of its array characteristics. It also makes it difficult to change the structure after it is determined, and it cannot be adjusted accordingly according to actual needs in application, which leads to inconvenience in practical application. Summary of the Invention

[0004] In view of the above-mentioned problems existing in the prior art, the present application provides a layout method and apparatus for a cylindrical synthetic aperture based on a multi-angle arc array, an antenna array device, an electronic device, and a storage medium. The technical solutions adopted in the embodiments of the present application are as follows:

[0005] An embodiment of the present application provides a layout method for a cylindrical synthetic aperture based on a multi-angle arc array, which is used for an antenna array device having a multi-angle arc array. The multi-angle arc array is obtained by arranging a linear antenna array based on an annular array base, wherein the annular array base includes an annular array and an annular array base connected to one end of the annular array. The method includes:

[0006] Determining antenna unit sizes and spacing between adjacent antenna units in the linear antenna array;

[0007] Determining basic parameters of the linear antenna array and the annular array base based on the antenna unit size and the spacing between adjacent antenna units, so as to arrange the linear antenna array around the annular array on the annular array base based on the basic parameters to obtain the multi-angle arc array;

[0008] The motion parameters of the annular array are determined based on the size of the antenna units to obtain the cylindrical synthetic aperture.

[0009] In some embodiments, determining the size of antenna elements in the linear antenna array includes:

[0010] Correspondingly determining the azimuth beam width and the altitude beam width of the antenna unit according to the azimuth resolution and the altitude resolution;

[0011] The azimuth size and the altitude size of the antenna unit are correspondingly determined according to the azimuth beam width and the altitude beam width.

[0012] In some embodiments, determining the spacing between adjacent antenna elements in the linear antenna array includes:

[0013] The center distance between adjacent antenna units in azimuth is determined according to the azimuth resolution to determine the interval between adjacent antenna units.

[0014] In some embodiments, determining basic parameters of the linear antenna array and the annular array base based on the antenna unit size and the spacing between adjacent antenna units includes:

[0015] determining a distance range between two antenna units, the two antenna units being located at edges of adjacent linear antenna arrays close to each other;

[0016] Determining the number of linear antenna arrays, the number of antenna units in the linear antenna array, and the inner diameter of the annular array according to the distance range between the two antenna units;

[0017] The distance between the two antenna elements, the length of the linear antenna array and the number of antenna elements in the arc array are determined based on the number of linear antenna arrays, the number of antenna elements in the linear antenna array and the inner diameter of the annular array.

[0018] In some embodiments, determining basic parameters of the linear antenna array and the annular array based on the antenna unit size and the spacing between adjacent antenna units further includes:

[0019] Determine the outer diameter of the annular array base based on the inner diameter of the annular array and the thickness of the linear antenna array;

[0020] The height of the annular array is determined based on the height dimension of the antenna units.

[0021] In some embodiments, determining the motion parameters of the annular array based on the antenna unit size includes:

[0022] Determining the stepping distance of the annular array according to the height resolution;

[0023] Determining the number of steps of the annular array based on the height dimension of the antenna unit and the step distance of the annular array;

[0024] The stepping interval of the annular array is determined based on the height dimension of the antenna unit and the number of steps of the annular array.

[0025] The present application also provides a layout device for a cylindrical synthetic aperture based on a multi-angle arc array, which is used in an antenna array device with a multi-angle arc array. The multi-angle arc array is obtained by arranging a linear antenna array based on an annular array base. The annular array base includes an annular array and an annular array base connected to one end of the annular array. The device includes:

[0026] a determination module configured to determine the size of antenna units and the spacing between adjacent antenna units in the linear antenna array;

[0027] an arrangement module configured to determine basic parameters of the linear antenna array and the annular array base based on the antenna unit size and the spacing between adjacent antenna units, so as to arrange the linear antenna array around the annular array on the annular array base based on the basic parameters to obtain the multi-angle arc array;

[0028] The motion control module is configured to determine the motion parameters of the annular array based on the size of the antenna units, so as to control the annular array to move according to the motion parameters to obtain the cylindrical synthetic aperture.

[0029] An embodiment of the present application also provides an antenna array device with a multi-angle arc array, which is constructed based on the layout method provided in any of the above embodiments of the present application.

[0030] An embodiment of the present application also provides an electronic device, comprising at least a memory, a processor, and a bus, wherein the memory stores machine-readable instructions executable by the processor. When the electronic device is running, the processor communicates with the memory via the bus. When the machine-readable instructions are executed by the processor, the steps of the layout method provided in any of the above embodiments of the present application are executed.

[0031] An embodiment of the present application further provides a storage medium storing one or more programs. When the one or more programs are executed by a processor, the steps of the layout method provided in any of the above embodiments of the present application are executed.

[0032] In the layout method and apparatus of the embodiments of the present application, a multi-angle arc array is formed by circularly arranging multiple small linear antenna arrays based on an annular base. This annular array is then used to form an outward-looking cylindrical geometric synthetic aperture by varying the height of the multi-angle arc array, thereby enabling the acquisition of three-dimensional data of the target. The layout method and apparatus of the embodiments of the present application have low structural complexity, are easy to use, and have low production costs. Furthermore, they can be easily adjusted and modified according to actual needs to increase the benefits of the constructed antenna equipment, thereby improving the imaging resolution of the target and significantly enhancing the detection performance of the radar antenna system. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0034] Figure 1 A schematic structural diagram of an antenna array device with a multi-angle arc array provided in an embodiment of the present application;

[0035] Figure 2 A top view of an antenna array device with a multi-angle arc array provided in an embodiment of the present application;

[0036] Figure 3 A schematic diagram of the structure of a linear antenna array provided in an embodiment of the present application;

[0037] Figure 4 A partial top view of an antenna array device with a multi-angle arc array provided in an embodiment of the present application;

[0038] Figure 5 A flowchart of a cylindrical synthetic aperture layout method based on a multi-angle arc array provided in an embodiment of the present application;

[0039] Figure 6 A schematic diagram of the structure of a cylindrical synthetic aperture layout device based on a multi-angle arc array provided in an embodiment of the present application;

[0040] Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] Unless otherwise defined, the technical or scientific terms used in this application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0043] In order to keep the following description of the embodiments of the present application clear and concise, detailed descriptions of known functions and known components are omitted in this application.

[0044] Currently, the structure of synthetic aperture imaging systems based on arc arrays is relatively complex. The complex geometric configuration adopted directly affects the input impedance of the antenna. The smooth and gradually changing arc geometric carrier and the intricate and complex external structure greatly increase the difficulty of electromagnetic analysis of its array characteristics. It also makes the structure difficult to change after it is determined, and it cannot be adjusted accordingly according to actual needs during application, which leads to practical inconvenience. Accordingly, the embodiment of the present application provides a layout method for a cylindrical synthetic aperture based on a multi-angle arc array. By forming a circular array of multiple small linear antenna arrays based on a circular base, a multi-angle arc array antenna is first formed. Then, the multi-angle arc array antenna is used to form an outward-looking cylindrical geometric synthetic aperture by varying the height to achieve the acquisition of three-dimensional target data. The arc array antenna in the embodiment of the present application has low structural complexity, is easy to use, and has low production cost. At the same time, it can be easily adjusted and modified according to actual needs, thereby increasing the efficiency of the constructed antenna equipment, thereby improving the imaging resolution of the target and greatly improving the detection performance of the radar antenna system.

[0045] The method for placing a cylindrical synthetic aperture based on a multi-angle arc array may be executed by an information processing device, for example, by a terminal device, a server, or other processing device, wherein the terminal device may be a user equipment (UE), a mobile device, a user terminal, a terminal, a cellular phone, a wireless phone, a personal digital assistant (PDA), a handheld device, a computing device, an in-vehicle device, a wearable device, etc. In some possible implementations, the method may be implemented by a processor invoking computer-readable instructions stored in a memory.

[0046] Figure 1 The schematic diagram of the structure of the antenna array device of the multi-angle arc array provided by the embodiment of the present application is shown. Figure 1 As shown, the antenna array device of the multi-angle arc array of the embodiment of the present application is capable of 360° comprehensive observation, has high antenna gain and superior detection performance advantages of the radar antenna system. At the same time, when constructed based on the layout method of the embodiment of the present application, the complexity of the geometric configuration of the traditional arc array is reduced, and it can be easily adjusted and modified according to actual needs to improve the gain of the constructed antenna device, thereby improving the imaging resolution of the target object and greatly improving the detection performance of the radar antenna system.

[0047] like Figure 1 As shown, the antenna array device of the multi-angle arc array of the embodiment of the present application includes: an annular base 110 and a linear antenna array 120. The linear antenna array 120 is arranged on the annular array base 110 to obtain a multi-angle arc array, thereby constructing the antenna array device. In the present application, the annular array base 110 includes an annular array 111 and an annular array base 112 connected to one end of the annular array 111. The annular array 111 and the annular array base 112 construct a housing structure for arranging the linear antenna array 120. The annular array base 110 can be made of a non-conductive material, such as a metal material, a metal alloy material, or a non-metallic material, etc., and this application does not limit this.

[0048] In an embodiment of the present application, the antenna array device of the multi-angle arc array is composed of two mutually perpendicular directional dimensions (for example, the azimuth dimension as the first directional dimension and the height dimension as the second directional dimension) to form an approximate two-dimensional annular surface.

[0049] In some practical applications, the antenna array device of the multi-angle arc array may include a linear antenna array composed of multiple linear antenna arrays 120, including linear antenna arrays 120-1 to 120-i (wherein i is an integer greater than 1, for example, i is equal to 5), and multiple linear antenna arrays 120-1 to 120-i can be arranged on a circular array base along the first direction dimension and the azimuth dimension, that is, multiple linear antenna arrays 120-1 to 120-i are arranged around the circular array 111, and are against the outside of the circular array 11 and located on the circular array base 112, so as to approximate a complete arc array.

[0050] In some specific applications, each linear antenna array 120 includes multiple antenna units 121, which can be represented as multiple antenna units 121-1 to 121-j (where j is an integer greater than 1, for example, j is equal to 5). Multiple antenna units 121-1 to 121-j are evenly arranged along a first dimension on each linear antenna array 120. Antenna units 121-1 to 121-j can be planar antennas such as horn antennas, for example, pyramidal horn antennas, conical horn antennas, etc.

[0051] Figure 2 FIG. 1 shows a top view of an antenna array device with a multi-angle arc array provided by an embodiment of the present application. Figure 2 As shown in the top view of the antenna array device with a multi-angle arc array, R min represents the radius of the annular array 111 (i.e., the inner diameter of the annular array base 112), R max represents the outer diameter of the annular array base 112. From the figure, it can be seen that the entire arc array is composed of m linear antenna arrays 120, and m represents the total number of linear antenna arrays 120 in the entire annular array (and m is a positive integer greater than zero). Figure 2 As shown, if m linear antenna arrays 120 are evenly distributed around the entire annular array, the geometric relationship in the figure shows that the angles formed by the lines connecting the ends of each linear antenna array 120 to the center of the annular array 111 are equal, expressed as α (for convenience, hereinafter α is expressed as the arc angle of a single linear antenna array). Similarly, the relationship between the arc angle α of a single linear antenna array 120 and the total number m of linear antenna arrays 120 can be derived as α = 2π / m.

[0052] Figure 3 FIG. 1 shows a schematic structural diagram of a linear antenna array according to an embodiment of the present application. Figure 3 As shown, it can be represented as a structural schematic diagram of the i-th linear antenna array 120 - i in the linear antenna array 120 . Figure 3The white matrix in the middle represents multiple antenna units 121 in the linear antenna array 120, which can be represented as multiple antenna units 121-1 to 121-j (where j is an integer greater than 1, for example, j is equal to 5). T Indicates the number of antenna elements 121 in a single linear antenna array 120. size x represents the length of each antenna unit 121 along the first direction dimension (ie, the width of the antenna unit 121), size h represents the height of each antenna unit 121 along the second direction dimension (ie, the length of the antenna unit 121), then D x represents the distance between adjacent antenna units, that is, the center distance between two adjacent antenna units 121, D r represents the distance from the edge of the antenna unit 121 in the linear antenna array 120 to the edge of the linear antenna array 120 in the azimuth dimension (simply referred to as the azimuth edge distance of the antenna unit). Similarly, D h L represents the distance from the edge of the antenna unit 121 to the edge of the linear antenna array 120 in the height dimension (simply the distance from the height of the antenna unit to the edge), array represents the length of the linear antenna array 120, W array represents the height of the linear antenna array 120, D array represents the thickness of the linear antenna array 120. Based on the geometric relationship in the above figure, formula (1) can be obtained:

[0053]

[0054] Figure 4 A partial top view of an antenna array device with a multi-angle arc array is shown, and Figure 4 For the convenience of observation, the proportions have been appropriately adjusted, and the proportions of the dimensions in the figure do not represent the actual data. Figure 4 As shown, the two larger rectangular solid boxes are two adjacent linear antenna arrays 120, of which the left rectangular solid box is 120-1 and the right rectangular solid box is 120-2. The multiple dotted rectangular boxes in the two larger rectangular solid boxes are antenna units 121 embedded in the linear antenna array. Because it is a top view, the antenna units 121 are not visible when looking down, so they are represented by dotted lines. Among them, O represents the center of the circular array 111, R min represents the radius of the annular array 111, α represents the arc angle of a single linear antenna array, L array represents the length of the linear antenna array 120, D array represents the thickness of the linear antenna array 120 (i.e., the axial length of the antenna unit 121), D rrepresents the distance from the antenna unit to the edge, O1 represents the geometric center of the antenna unit 121 at the right edge of the linear antenna array 120-1, O2 represents the geometric center of the antenna unit 121 at the left edge of the linear antenna array 120-2, and D adj represents the distance between two antenna units 121 at the edges of two adjacent linear antenna arrays 120 (i.e., the distance from O1 to O2 in the figure), l1 represents the length of a geometric line segment in the figure, and A, B, C, D, and E are the intersection points of the line segments in the figure.

[0055] according to Figure 4 From the geometric relationship in the above content, it can be concluded that the lines connecting the inner ends of each linear antenna array 120 to the center O of the annular array 111 are at the same angle α, and the midpoint of each linear antenna array 120 along the azimuth dimension of the first direction (i.e., Figure 4 The line connecting point D of the linear antenna array 120-1 in the middle to the center O of the circular array 111 is perpendicular to the linear antenna array 120 (i.e., the linear antenna array 120 is tangent to the circular array 111 at the midpoint). The two adjacent linear antenna arrays 120-1 and 120-2 intersect at point B. Line segments AO1 and AO2 are parallel to the long sides of the top views of the linear antenna arrays 120-1 and 120-2, respectively, and intersect at the midpoints of the short sides of the top views of the linear antenna arrays 120-1 and 120-2. Line segment AB is an extension of line segment OB. Line segment OE is a line connecting the point in the linear antenna array 120 farthest from the center of the circular array 111 to the center of the circular array 111. Then, Figure 4 The geometric relationship in can be derived from formula (2):

[0056]

[0057] where l BC The length of line segment BC can be further obtained by formula (3): and for:

[0058]

[0059] Then, the distance D between two antenna units 121 at the edges of two adjacent linear antenna arrays 120 is adj (i.e. the distance from O1 to O2 in the figure) can be obtained using formula (4):

[0060]

[0061] And by Figure 4 The geometric relationship shows that the trigonometric function corresponding to the arc angle α of a single linear antenna array is:

[0062]

[0063] The distance D between two antenna elements 121 at the edges of two adjacent linear antenna arrays 120 can be deduced from the above formulas (2), (3), (4) and (5): adj The calculation formula (6) is:

[0064]

[0065] At the same time through Figure 4 The geometric relationship in and the cosine theorem can be used to derive the length relationship of the line segment OE as follows (7):

[0066]

[0067] where l OE is the length of line segment OE, l OB is the length of line segment OB, l BE is the length of line segment BE, ∠OBE is the angle between line segments OB and BE, and the length of line segment OE can be calculated using formula (8):

[0068]

[0069] Next, the layout method of the cylindrical synthetic aperture based on the multi-angle arc array provided by this application is described. Figure 5 As shown, the layout method of a cylindrical synthetic aperture based on a multi-angle arc array according to an embodiment of the present application includes the following steps S100-S300:

[0070] S100: Determine the size of antenna units and the interval between adjacent antenna units in the linear antenna array.

[0071] Combine Figure 3 As shown, in this embodiment, the signal transmission surface of the linear antenna array composed of multiple antenna units 121 is L array And the width is W array A two-dimensional plane includes a first azimuth dimension and a second elevation dimension that are perpendicular to each other. This step is intended to determine the antenna element size and spacing between adjacent antenna elements in linear antenna array 120 based on the spatial resolution required in the actual application, laying the foundation for subsequent calculation of basic parameters of the linear antenna array and layout of the linear antenna array.

[0072] In some specific applications, in step S100, determining the size of antenna elements in the linear antenna array may be implemented as follows:

[0073] Correspondingly determining the azimuth beam width and the altitude beam width of the antenna unit according to the azimuth resolution and the altitude resolution;

[0074] The azimuth size and the altitude size of the antenna unit are correspondingly determined according to the azimuth beam width and the altitude beam width.

[0075] In this embodiment, the parameters of a single antenna unit 121 are determined based on the spatial resolution of the antenna array device of the multi-angle arc array on a two-dimensional plane, where the main parameters include: determining the beam width of each antenna unit 121 in two directional dimensions, thereby determining the effective size of the antenna unit in two directional dimensions, and subsequently determining the spacing between two adjacent antenna units 121.

[0076] In this embodiment, combined with Figure 3 As shown, determining the beam width of the antenna unit 121 in the linear antenna array 120 in a two-dimensional plane includes: determining the azimuth beam width of the antenna unit 121 in a first direction dimension, the azimuth dimension, and the altitude beam width in a second direction dimension, the altitude dimension, according to the spatial resolution required in the actual application (wherein the spatial resolution may include the azimuth resolution and the altitude resolution).

[0077] In this embodiment, the beam width of the antenna unit 121 in two directional dimensions can be calculated using formula (9):

[0078]

[0079] where θ Azi represents the azimuth beamwidth of the antenna unit 121 in the first directional dimension, θ Hei represents the height beam width of the antenna unit 121 in the second direction dimension, the height dimension; ρ1 represents the azimuth resolution of the radar antenna system of the antenna array device in the first direction dimension, the azimuth dimension; ρ2 represents the height resolution of the radar antenna system of the antenna array device in the second direction dimension, the height dimension. The above two parameters, the azimuth resolution and the height resolution, can be pre-set by technicians according to the data acquisition requirements of the antenna system in actual application; where λ c Indicates the operating wavelength of the antenna system. According to the operating frequency range of the antenna system is f L ~f H (For example, 24GHz≤f L ≤f H ≤40GHz), the central operating frequency is f c =(f L +f H ) / 2, and further the working wavelength of the antenna system is λ c =c / f c , where c is the speed of light in a vacuum, i.e. c = 3 × 10 8m / s; k is a constant, which is related to the antenna unit weight or the current on the antenna unit and k∈(0.886,1.4). For convenience, k=0.886 is usually taken.

[0080] In this embodiment, continue to combine Figure 3 , determining the effective size of the antenna unit 121 in two directional dimensions includes: correspondingly determining the effective size of the antenna unit 121 in the first directional dimension, that is, the azimuth dimension, according to the azimuth beam width and the height beam width, and determining the effective size of the antenna unit 121 in the second directional dimension, that is, the height dimension.

[0081] Combine Figure 3 As shown, the effective size of the antenna unit 121 in the first direction dimension, that is, the azimuth dimension size x Formula (10) can be used to calculate:

[0082]

[0083] Where k is a constant, usually k = 0.886 for convenience; λ c The operating wavelength of the antenna array device of the multi-angle arc array system; θ Azi It represents the beam width of the antenna unit 121 in the azimuth dimension of the first direction, that is, the azimuth beam width.

[0084] The effective size of the antenna unit 121 in the second direction dimension, that is, the height dimension size h It can be calculated using formula (11):

[0085]

[0086] Where k is a constant, usually k = 0.886 for convenience; λ c Represents the operating wavelength of the antenna array device system with multi-angle arc array; θ Hei It represents the beam width of the antenna unit 121 in the second direction dimension, the height dimension, that is, the height beam width.

[0087] In some specific applications, in step S100, determining the intervals between adjacent antenna elements in the linear antenna array may be implemented as follows:

[0088] The center distance between adjacent antenna units in azimuth is determined according to the azimuth resolution to determine the interval between adjacent antenna units.

[0089] Combine Figure 3As shown, to determine the spacing between adjacent antenna elements in the linear antenna array, the center distance D between two adjacent antenna elements 121 in the linear antenna array 120 in the azimuth dimension can be calculated according to the azimuth resolution using formula (12): x :

[0090] D x =2·ρ1 (12)

[0091] Wherein, ρ1 represents the spatial resolution of the antenna system in the first direction dimension, azimuth dimension, that is, the azimuth resolution.

[0092] S200, determining basic parameters of the linear antenna array and the annular array base based on the antenna unit size and the spacing between adjacent antenna units, so as to arrange the linear antenna array around the annular array on the annular array base based on the basic parameters to obtain the multi-angle arc array.

[0093] This step aims to determine the basic parameters of the linear antenna array and the ring array base, so as to arrange the linear antenna array shown using the ring array and the ring array base to obtain a multi-angle arc array. Figure 4 As shown, in this step, basic parameters of the linear antenna array 120 and the annular array base 110 are determined, including determining the distance between two antenna units 121 at the edges of two adjacent linear antenna arrays 120, determining the number of antenna units 121 in a single linear antenna array 120, determining the radius of the annular array 111, determining the outer diameter of the annular array base 112, determining the length of a single linear antenna array 120, determining the total number of linear antenna arrays in the annular array 111, and determining the number of antenna units 121 in the entire multi-angle arc array.

[0094] In some embodiments, in step S200, determining the basic parameters of the linear antenna array and the annular array based on the antenna unit size and the spacing between adjacent antenna units may be implemented as follows:

[0095] determining a distance range between two antenna units, the two antenna units being located at edges of adjacent linear antenna arrays close to each other;

[0096] Determining the number of linear antenna arrays, the number of antenna units in the linear antenna array, and the inner diameter of the annular array according to the distance range between the two antenna units;

[0097] The distance between the two antenna elements, the length of the linear antenna array and the number of antenna elements in the arc array are determined based on the number of linear antenna arrays, the number of antenna elements in the linear antenna array and the inner diameter of the annular array.

[0098] According to formulas (1) and (6), the relationship between the distance between two antenna units 121 at the edges of two adjacent linear antenna arrays 120, the number of antenna units 121 in a single linear antenna array 120, and the radius of the annular array 111 is shown in formula (13):

[0099]

[0100] Among them D adj D represents the distance between two antenna units 121 at the edges of two adjacent linear antenna arrays 120; r Indicates the distance from the antenna unit to the edge; size x Indicates the azimuth dimension of the antenna unit 121; D array represents the thickness of the linear antenna array 120 (i.e., the axial length of the antenna unit 121), the value of which depends on the specific application scenario and the appropriate specifications of the antenna unit 121 according to the system configuration requirements, and is understandable to those skilled in the art; T represents the number of antenna elements 121 in a single linear antenna array 120; D x R represents the center distance between two adjacent antenna elements 121 in the linear antenna array 120 in the first direction dimension, that is, the spacing between adjacent antenna elements. min represents the radius of the annular array 111.

[0101] According to formula (11), the distance D between two antenna units 121 at the edges of two adjacent linear antenna arrays 120 is adj The number j of antenna elements 121 in a single linear antenna array 120 T Proportional to the radius R of the annular array 111 min Inversely proportional; and D adj The value range of can be expressed by formula (14):

[0102]

[0103] where ξ a It represents the maximum distance between two antenna units 121 at the edge of two adjacent linear antenna arrays 120 without affecting the imaging quality of the radar antenna system. The number j of antenna units 121 in a single linear antenna array 120 is obtained within this range. T and the radius R of the annular array 111 min The optimal solution j To and R min o The values ​​of the two optimal solutions must satisfy the following conditions, namely formula (15):

[0104]

[0105] Where α represents the arc angle of a single linear antenna array, and m represents the total number of linear antenna arrays in the annular array 111. Further, the optimal solution j can be obtained based on the number of antenna units 121 in the single linear antenna array 120. To and the optimal solution R for the radius of the ring array 111 min o The distance D between two antenna elements 121 at the edges of two adjacent linear antenna arrays 120 is determined using formula (16): adj And the length of the linear antenna array 120 is:

[0106]

[0107] Then, according to the total number m of linear antenna arrays in the annular array 111 and the number of antenna units 121 in a single linear antenna array 120, the optimal solution j is: To Use formula (17) to determine the number N of antenna units 121 in the entire multi-angle arc array: r for:

[0108] N r =j To ·m (17)

[0109] In some embodiments, in step S200, determining the basic parameters of the linear antenna array and the annular array based on the antenna unit size and the interval between adjacent antenna units may also be implemented as follows:

[0110] Determine the outer diameter of the annular array base based on the inner diameter of the annular array and the thickness of the linear antenna array;

[0111] The height of the annular array is determined based on the height dimension of the antenna units.

[0112] In this embodiment, combined with Figure 4 As shown in formula (8), according to the linear antenna array 120, the optimal solution R of the radius of the annular array 111 is min o The value of and the thickness of the linear antenna array 120 are used to determine the outer diameter R of the annular array base 112 using formula (18): max for:

[0113]

[0114] Among them L array represents the length of the linear antenna array 120, D array represents the thickness of the linear antenna array 120, R min o represents the optimal solution for the radius of the annular array 111, ξ r It represents the extended length to ensure that the annular array base 112 can fully support the linear antenna array 120. The value is as small as possible without affecting the transmission and reception operation of the antenna array device and taking consumables into consideration.

[0115] According to an embodiment of the present invention, Figure 3 , the height W of the linear antenna array 120 is determined using formula (19) according to the height dimension of the antenna unit 121 array for:

[0116] W array =size h +2·D h (19)

[0117] Where W array Indicates the height of the linear antenna array 120, size h Indicates the height dimension of the antenna unit, D h It represents the distance from the height-dimensional edge of the antenna unit 121 to the edge of the linear antenna array (simply described as the distance from the height of the antenna unit to the edge). The smaller the value is, the better, without affecting the transmission and reception operation of the antenna array device and taking consumables into consideration.

[0118] In summary, we can r The antenna units 121 form m linear antenna arrays 120, and then the m linear antenna arrays 120 are arranged around the annular array 111 shown, and the inner diameter R is obtained after synthesis. min o , outer diameter is R max The annular array is constructed to construct the multi-angle arc array.

[0119] S300: Determine the motion parameters of the annular array based on the size of the antenna units to obtain the cylindrical synthetic aperture.

[0120] This step aims to use the annular array to form a cylindrical geometric synthetic aperture for outward observation through height changes to collect the target three-dimensional data. Figure 3 As shown, the stepping distance of the annular array 111 can be determined first, and then the number of steps of the annular array 111 can be determined based on the height dimension of the antenna unit 121 and the actual required height of the cylindrical synthetic aperture. Finally, the stepping interval actually used by the annular array can be determined based on the height dimension of the antenna unit 121 and the number of steps of the annular array 111.

[0121] In some embodiments, determining the motion parameters of the annular array based on the antenna unit size in step S300 may be implemented as follows:

[0122] Determining the stepping distance of the annular array according to the height resolution;

[0123] Determining the number of steps of the annular array based on the height dimension of the antenna unit and the step distance of the annular array;

[0124] The stepping interval of the annular array is determined based on the height dimension of the antenna unit and the number of steps of the annular array.

[0125] In this embodiment, the stepping distance of the entire annular array 111 in the second direction dimension in the height dimension is determined by formula (20) according to the height resolution ρ2:

[0126] D step =2·ρ2 (20)

[0127] Where ρ2 represents the spatial resolution of the antenna system in the second directional dimension, the height dimension, that is, the height resolution.

[0128] Then, the size is adjusted according to the height of the antenna unit 121. h Formula (21) is used to calculate the number of steps in the height dimension of the second direction required for the entire annular array 111 to form the entire cylindrical synthetic aperture:

[0129]

[0130] Where size h Denotes the height dimension of the antenna unit 121, D h represents the height distance from the antenna unit 121 to the edge, H represents the actual required height of the cylindrical synthetic aperture, Indicates rounding up.

[0131] Finally, the height of the antenna unit 121 is adjusted to size h and the number of steps N h Formula (22) is used to calculate and correct the stepping distance of the annular array 111 in the height dimension of the second direction to obtain the actual applied stepping interval of the entire annular array 111 after correction in the height dimension of the second direction:

[0132]

[0133] In summary, the entire ring array 111 can be controlled to s-re The step interval moves in the vertical direction to sample the signal, step N h The total number of samples can be N times h +1 time to form an inner diameter of R min o , a cylindrical synthetic aperture with a height of H is formed, thereby realizing three-dimensional mapping of the target.

[0134] Based on the same inventive concept, the embodiment of the present disclosure also provides a layout device for a cylindrical synthetic aperture based on a multi-angle arc array, which is used for an antenna array device with a multi-angle arc array; wherein the annular array base is used to arrange a linear antenna array, which includes an annular array and an annular array base connected to one end of the annular array. Figure 6 As shown, the layout device includes:

[0135] A determination module 10 is configured to determine the size of antenna elements and the spacing between adjacent antenna elements in the linear antenna array;

[0136] an arrangement module 20 configured to determine basic parameters of the linear antenna array and the annular array based on the antenna unit size and the interval between adjacent antenna units, so as to arrange the linear antenna array around the annular array based on the basic parameters;

[0137] The motion control module 30 is configured to determine the motion parameters of the annular array based on the size of the antenna units, so as to control the annular array to move according to the motion parameters to obtain the cylindrical synthetic aperture.

[0138] The layout device in the embodiment of the present disclosure, through its configured determination module 10, arrangement module 20 and motion control module 30, can implement any method step in the layout method of cylindrical synthetic aperture based on multi-angle arc array provided in any embodiment of the present application, and this embodiment will not be repeated here.

[0139] An embodiment of the present application also provides an antenna array device with a multi-angle arc array, which can be constructed based on any method step in the layout method of the cylindrical synthetic aperture based on the multi-angle arc array provided in any of the above embodiments of the present application. This embodiment will not be repeated here.

[0140] The embodiment of the present application further provides an electronic device, which includes at least a memory 901, a processor 902 and a bus (not shown), wherein the structural diagram of the electronic device can be as follows: Figure 7 As shown, the memory 901 stores machine-readable instructions executable by the processor 902. When the electronic device is running, the processor 902 communicates with the memory 901 through a bus. When the machine-readable instructions are executed by the processor, any method step in the layout method of the cylindrical synthetic aperture based on a multi-angle arc array provided in any embodiment of the present application is executed.

[0141] Since the electronic device introduced in the embodiment of the present application is an electronic device provided with a memory for implementing the layout method of the cylindrical synthetic aperture based on the multi-angle arc array disclosed in the embodiment of the present application, based on the layout method of the cylindrical synthetic aperture based on the multi-angle arc array introduced in the embodiment of the present application, technical personnel in this field can understand the structure and deformation of the electronic device introduced in the embodiment of the present application, so it is not repeated here.

[0142] An embodiment of the present application also provides a storage medium, which carries one or more programs. When the above one or more programs are executed by a processor, the steps of the layout method of the cylindrical synthetic aperture based on a multi-angle arc array provided in any embodiment of the present application are implemented.

[0143] The storage medium in this embodiment may be included in the electronic device / system, or may exist independently and not be incorporated into the electronic device / system. The storage medium carries one or more programs that, when executed, implement the steps of the method for laying out a cylindrical synthetic aperture based on a multi-angle arc array according to the embodiment of the present application.

[0144] According to an embodiment of the present application, the computer-readable storage medium may be a non-volatile computer-readable storage medium, for example, it may include but is not limited to: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. Optionally, the specific examples in this embodiment can refer to the examples described in any embodiment of the present application, and this embodiment will not be repeated here. Obviously, those skilled in the art should understand that the above-mentioned modules or steps of the present application can be implemented using a general-purpose computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, optionally, they can be implemented using program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be performed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.

[0145] In addition, although exemplary embodiments have been described herein, the scope includes any and all embodiments based on the present application with equivalent elements, modifications, omissions, combinations (e.g., solutions that intersect various embodiments), adaptations, or changes. The elements in the claims are to be interpreted broadly based on the language employed in the claims and are not limited to the examples described in this specification or during the prosecution of this application, which examples are to be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered as examples only, with the true scope and spirit being indicated by the following claims and the full scope of their equivalents.

[0146] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more of their solutions) can be used in combination with each other. For example, a person of ordinary skill in the art may use other embodiments when reading the above description. In addition, in the above-mentioned specific embodiments, various features can be grouped together to simplify the application. This should not be interpreted as an intention that a disclosed feature that is not required to be protected is necessary for any claim. On the contrary, the subject matter of the present application may be less than all the features of a specific disclosed embodiment. Thus, the following claims are incorporated into the specific embodiments as examples or embodiments, wherein each claim is independently a separate embodiment, and it is considered that these embodiments can be combined with each other in various combinations or arrangements. The scope of this application should be determined with reference to the appended claims and the full scope of equivalents to which these claims are entitled.

[0147] The above describes in detail several embodiments of the present application, but the present application is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications to the embodiments based on the concept of the present application, and these variations and modifications should all fall within the scope of protection claimed by the present application.

Claims

1. A layout method for a cylindrical synthetic aperture based on a multi-angle curved array, for an antenna array device having a multi-angle curved array; wherein: The multi-angle arc array is obtained by arranging a linear antenna array based on a ring array base, wherein the ring array base includes a ring array and a ring array base connected to one end of the ring array. The method includes: Determining antenna unit sizes and spacing between adjacent antenna units in the linear antenna array; Determining basic parameters of the linear antenna array and the annular array base based on the antenna unit size and the spacing between adjacent antenna units, so as to arrange the linear antenna array around the annular array on the annular array base based on the basic parameters to obtain the multi-angle arc array; Determining the motion parameters of the annular array based on the size of the antenna units to obtain the cylindrical synthetic aperture; Determining basic parameters of the linear antenna array and the annular array base based on the antenna unit size and the spacing between adjacent antenna units includes: determining a distance range between two antenna units, the two antenna units being located at edges of adjacent linear antenna arrays close to each other; Determining the number of linear antenna arrays, the number of antenna units in the linear antenna array, and the inner diameter of the annular array according to the distance range between the two antenna units; The distance between the two antenna elements, the length of the linear antenna array and the number of antenna elements in the arc array are determined based on the number of linear antenna arrays, the number of antenna elements in the linear antenna array and the inner diameter of the annular array.

2. The method according to claim 1, wherein Determining the size of antenna elements in the linear antenna array includes: Correspondingly determining the azimuth beam width and the altitude beam width of the antenna unit according to the azimuth resolution and the altitude resolution; The azimuth size and the altitude size of the antenna unit are correspondingly determined according to the azimuth beam width and the altitude beam width.

3. The method according to claim 2, wherein: Determining the spacing between adjacent antenna elements in the linear antenna array includes: The center distance between adjacent antenna units in azimuth is determined according to the azimuth resolution to determine the interval between adjacent antenna units.

4. The method according to claim 2, wherein: Determining basic parameters of the linear antenna array and the annular array based on the antenna unit size and the interval between adjacent antenna units further includes: Determine the outer diameter of the annular array base based on the inner diameter of the annular array and the thickness of the linear antenna array; The height of the annular array is determined based on the height dimension of the antenna units.

5. The method according to claim 2, wherein: Determining the motion parameters of the annular array based on the size of the antenna units includes: Determining the stepping distance of the annular array according to the height resolution; Determining the number of steps of the annular array based on the height dimension of the antenna unit and the step distance of the annular array; The stepping interval of the annular array is determined based on the height dimension of the antenna unit and the number of steps of the annular array.

6. A layout device for cylindrical synthetic aperture based on a multi-angle arc array, used for an antenna array device with a multi-angle arc array; wherein: The multi-angle arc array is obtained by arranging a linear antenna array based on a ring array base, wherein the ring array base includes a ring array and a ring array base connected to one end of the ring array. The device includes: a determination module configured to determine the size of antenna units and the spacing between adjacent antenna units in the linear antenna array; an arrangement module configured to determine basic parameters of the linear antenna array and the annular array base based on the antenna unit size and the spacing between adjacent antenna units, so as to arrange the linear antenna array around the annular array on the annular array base based on the basic parameters to obtain the multi-angle arc array; a motion control module configured to determine motion parameters of the annular array based on the size of the antenna units, so as to control the annular array to move according to the motion parameters to obtain the cylindrical synthetic aperture; Determining basic parameters of the linear antenna array and the annular array base based on the antenna unit size and the spacing between adjacent antenna units includes: determining a distance range between two antenna units, the two antenna units being located at edges of adjacent linear antenna arrays close to each other; Determining the number of linear antenna arrays, the number of antenna units in the linear antenna array, and the inner diameter of the annular array according to the distance range between the two antenna units; The distance between the two antenna elements, the length of the linear antenna array and the number of antenna elements in the arc array are determined based on the number of linear antenna arrays, the number of antenna elements in the linear antenna array and the inner diameter of the annular array.

7. An antenna array device with a multi-angle arc array, constructed based on the layout method according to any one of claims 1 to 5.

8. An electronic device comprising at least a memory, a processor, and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor communicates with the memory via the bus, and when the machine-readable instructions are executed by the processor, the steps of the method according to any one of claims 1 to 5 are performed.

9. A storage medium storing one or more programs, wherein when the one or more programs are executed by a processor, the steps of the method according to any one of claims 1 to 5 are performed.

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