Space antenna cell skeleton structure, method, system, medium and equipment

Abstract

A modular space antenna cell skeleton structure with equal rib length and equal gap, a generation method, a system, a medium and an apparatus. In the method, an upper initial skeleton structure of a central cell is generated, where the lines connecting the six vertices of a regular hexagon and the geometric center point form six ribs, which constitute the upper initial skeleton structure of the central cell; skeleton structures of other cells are generated, where the skeleton structures of other cells are generated in units of ribs, and the newly generated ribs are connected to the ribs, so the vertex at one end of the newly generated rib is known, and the two vertices of the newly generated rib serve as key points. The set of key points of all ribs in a single cell serves as the key point of the cell; all ribs and key points are gradually generated along a path from the center to the edge, and all key points are updated to generate gaps between cells; the key points are extended along the direction from the center of the sphere to itself by the distance of a back frame to obtain new key points; and the key points are connected in sequence to obtain the skeleton structure of the entire cell.

Description

Technical Field

[0001] The present invention relates to the technical field of space reflector antennas, and in particular to a modular space antenna cell skeleton structure with equal rib lengths and equal gaps, a method, a system, a medium and a device. Background Art

[0002] Space reflector antennas are parabolic in shape and can be fitted with a spherical surface. Traditional reflector antennas are relatively small, requiring only a single folding mechanism to fold the entire antenna and fit it into the fairing of a launch vehicle. However, with the advancement of space technology, the requirements for antenna performance are becoming increasingly stringent. For one thing, antennas can reach sizes exceeding 100 meters, and a single folding mechanism is no longer sufficient for both deployment and transportation. Therefore, the antenna needs to be broken down into multiple small modules, each with its own folding mechanism. At the same time, the differences in the configuration of each module must be kept as small as possible to reduce design workload and risks during antenna deployment. Furthermore, the antenna must possess adaptive adjustment capabilities.

[0003] The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art. Summary of the Invention

[0004] The present invention provides a modular space antenna cell skeleton structure with equal rib length and equal gap, a generation method, a system, a medium and an apparatus. The skeleton structure of the antenna uses spherical fitting to obtain the skeleton structure of each cell, which meets the folding and expansion requirements of the space antenna while reserving installation space for the adaptive adjustment mechanism between the cells. At the same time, it ensures that the rib length of all cells is equal to the gap width left between the cells.

[0005] A method for generating a modular space antenna cell skeleton structure with equal rib lengths and equal gaps includes:

[0006] Generate an upper initial skeleton structure of the central cell, wherein any point on the sphere is used as the geometric center point of the central cell, a circle is drawn on the sphere with the geometric center point as the center and the desired rib length as the radius, and an arbitrary regular hexagon is drawn with the circle as the enveloping circle. The lines connecting the six vertices of the regular hexagon and the geometric center point form six ribs, and these six ribs constitute the upper initial skeleton structure of the central cell;

[0007] Generate the skeleton structure of other cells. The skeleton structure of other cells is generated in units of ribs. The newly generated ribs are connected to the ribs. Therefore, the vertex at one end of the newly generated rib is known. The two vertices of the newly generated ribs are used as key points. The set of key points of all ribs in a single cell is used as the key point of the cell. The key point to be generated is determined by the existing geometric constraints. If the existing geometric constraints uniquely determine the position of the key point, the key point is established according to the existing geometric constraints. Otherwise, a new geometric constraint is established. The key point is established based on the original geometric constraint and the new geometric constraint is combined to establish the key point until the position of the key point is determined.

[0008] All ribs and key points are gradually generated along the path from the center to the edge, and all key points are updated to generate gaps between cells; the key points are extended along the direction from the center of the sphere to itself by a back frame distance to obtain new key points; and the key points are connected in sequence to obtain the skeleton structure of the entire cell.

[0009] In the method for generating a modular space antenna cell skeleton structure with equal rib lengths and equal gaps, the peripheral vertices of the six ribs of the central cell are connected to form a regular hexagon, and the rib length is variable.

[0010] In the method for generating a modular space antenna cell skeleton structure with equal rib lengths and equal gaps, the geometric constraints are determined by the geometric properties of the space rhombus on the sphere.

[0011] In the method for generating a modular space antenna cell skeleton structure with equal rib lengths and equal gaps, opposite vertices of the space rhombus on the sphere are symmetrical along the symmetry plane.

[0012] In the method for generating a modular space antenna cell skeleton structure with equal rib lengths and equal gaps, the symmetry plane is determined by the center of the sphere and another pair of vertices of the space rhombus on the sphere.

[0013] In the method for generating a modular space antenna cell skeleton structure with equal rib lengths and equal gaps, the modular space antenna cell skeleton structure is a symmetrical structure.

[0014] A modular space antenna cell skeleton structure with equal rib lengths and equal gaps is generated via the generation method.

[0015] A system for generating a cell skeleton of an equal-gap modular space reflector antenna includes:

[0016] An upper initial skeleton structure generating unit is used to generate an upper initial skeleton structure of a central cell, wherein an arbitrary point on the sphere is used as the geometric center point of the central cell, a circle is drawn on the sphere with the geometric center point as the center and the desired rib length as the radius, and an arbitrary regular hexagon with the circle as the enveloping circle is made. The lines connecting the six vertices of the regular hexagon and the geometric center point form six ribs, and these six ribs constitute the upper initial skeleton structure of the central cell;

[0017] Generate a skeleton structure generation unit for other cells, which is used to generate the skeleton structure of other cells. The skeleton structure of other cells is generated in units of ribs. The newly generated ribs are connected to the ribs, so the vertex at one end of the newly generated rib is known. The two vertices of the newly generated ribs are used as key points. The set of key points of all ribs in a single cell is used as the key point of the cell. The key point to be generated is determined by the existing geometric constraints. If the existing geometric constraints uniquely determine the position of the key point, the key point is established according to the existing geometric constraints. Otherwise, a new geometric constraint is established. The key point is established based on the original geometric constraint and the new geometric constraint is combined to establish the key point until the position of the key point is determined.

[0018] The skeleton structure generation unit is used to gradually generate all ribs and key points along the path from the center to the edge, update all key points to generate gaps between cells; extend the key points along the direction from the center of the sphere to itself by the distance of a back frame to obtain new key points; connect the key points in sequence to obtain the skeleton structure of the entire cell.

[0019] A computer storage medium includes computer instructions, which, when executed on a computer, cause the computer to execute the method described above.

[0020] An electronic device, comprising:

[0021] A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein:

[0022] When the processor executes the program, the method described is implemented.

[0023] Compared with the existing technology, the present invention has the following advantages: based on determining the initial rib size of the central cell and the size of the sphere to be fitted, the present invention generates ribs of equal length from the center to the edge according to certain rules, and then updates the key points of the ribs according to the strategy, and finally successfully uses spherical fitting to fit the antenna skeleton structure, ensuring that the length of each rib is equal to the cell gap within the allowable error range, while meeting the folding and expansion requirements of the modular antenna cell and the installation requirements of the adaptive structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Various other advantages and benefits of the present invention will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are intended only to illustrate preferred embodiments and are not to be construed as limiting the present invention. It should be understood that the drawings described below are merely examples of the present invention, and that those skilled in the art will be able to derive other drawings from these drawings without inventive effort. Throughout the drawings, identical reference numerals are used to denote identical components.

[0025] In the attached figure:

[0026] Figure 1 It is a schematic diagram of the process of the present invention;

[0027] Figure 2 Schematic diagram of the antenna cell skeleton structure of the present invention;

[0028] Figure 3 Schematic diagram of two vertex sharing forms of the antenna cell skeleton of the present invention;

[0029] Figure 4 Schematic diagram of the process of generating the upper skeleton structure of the central cell of the present invention;

[0030] Figure 5 This is a schematic diagram of the upper skeleton structure of the central cell of the present invention;

[0031] Figure 6 Establish a reference point diagram for the key points of the present invention;

[0032] Figure 7 This is a schematic diagram of the position of the symmetry plane of the present invention;

[0033] Figure 8 A schematic diagram of a situation where a new geometric constraint needs to be established in the present invention;

[0034] Figure 9 A schematic diagram showing the positions of effective key points constituting a type of vertex sharing in the present invention;

[0035] Figure 10 This is a schematic diagram of the invalid key point position of the present invention;

[0036] Figure 11 Establish a reference point diagram for the key points of the present invention;

[0037] Figure 12 A schematic diagram of the position of the ribs is generated when adding geometric constraints to the present invention;

[0038] Figure 13 This is a rendering of the present invention;

[0039] Figure 14 This is a schematic diagram of the connection between two adjacent cell ribs of the present invention;

[0040] Figure 15 A schematic diagram of cell gap generation according to the present invention;

[0041] Figure 16 This is the final effect diagram of the present invention;

[0042] Figure 17 This is the final effect diagram of the present invention.

[0043] The present invention will be further explained below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0044] Specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although specific embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0045] It should be noted that certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that technicians may use different nouns to refer to the same component. This specification and claims do not use the difference in nouns as a way to distinguish components, but use the difference in the functions of the components as the criterion for distinction. As mentioned throughout the specification and claims, "including" or "comprising" is an open term, so it should be interpreted as "including but not limited to". The subsequent description of the specification is a preferred embodiment of the present invention, but the description is based on the general principles of the specification and is not intended to limit the scope of the invention. The scope of protection of the present invention shall be as defined in the attached claims.

[0046] To facilitate understanding of the embodiments of the present invention, further explanation will be given below using specific embodiments as examples in conjunction with the accompanying drawings, and the accompanying drawings do not constitute a limitation on the embodiments of the present invention.

[0047] like Figures 1 to 17 As shown, the method for generating a modular space antenna cell skeleton structure with equal rib length and equal gap includes the following steps:

[0048] Generate the initial upper skeleton structure of the central cell. Take any point on the sphere as the geometric center of the central cell, draw a circle on the sphere with the desired rib length as the radius and the geometric center as the center. Create a regular hexagon with the circle as the enveloping circle. The lines connecting the six vertices of the regular hexagon and the geometric center form six ribs. These six ribs constitute the initial upper skeleton structure of the central cell.

[0049] Generate the skeleton structure of other cells. The skeleton structure of other cells is generated in units of ribs. The newly generated ribs are connected to the ribs, so the vertex at one end of the newly generated rib is known. The two vertices of the newly generated ribs are used as key points. The set of key points of all ribs in a single cell is used as the key point of the cell. The key point to be generated is determined by the existing geometric constraint. If the existing geometric constraint uniquely determines the position of the key point, the key point is established according to the existing geometric constraint. Otherwise, a new geometric constraint is established. The key point is established based on the original geometric constraint and the new geometric constraint is combined to establish the key point until the position of the key point is determined. Further, the other cells refer to all cells other than the central cell.

[0050] All ribs and key points are gradually generated along the path from the center to the edge, and all key points are updated to generate gaps between cells; the key points are extended along the direction from the center of the sphere to itself by a back frame distance to obtain new key points; and the key points are connected in sequence to obtain the skeleton structure of the entire cell.

[0051] In a preferred embodiment of the method for generating a modular space antenna cell skeleton structure with equal rib lengths and equal gaps, the peripheral vertices of the six ribs of the central cell are connected to form a regular hexagon, and the rib length is variable.

[0052] In a preferred embodiment of the method for generating a modular space antenna cell skeleton structure with equal rib lengths and equal gaps, the geometric constraints are determined by the geometric properties of the space rhombus on the sphere.

[0053] In a preferred embodiment of the method for generating a modular space antenna cell skeleton structure with equal rib lengths and equal gaps, opposite vertices of the space rhombus on the sphere are symmetrical along the symmetry plane.

[0054] In a preferred embodiment of the method for generating a modular space antenna cell skeleton structure with equal rib lengths and equal gaps, the symmetry plane is determined by the center of the sphere and another pair of vertices of the space rhombus on the sphere.

[0055] In a preferred embodiment of the method for generating a modular space antenna cell skeleton structure with equal rib lengths and equal gaps, the modular space antenna cell skeleton structure is a symmetrical structure.

[0056] A modular space antenna cell skeleton structure with equal rib lengths and equal gaps is generated via the generation method.

[0057] A system for generating a cell skeleton of an equal-gap modular space reflector antenna includes:

[0058] The upper initial skeleton structure generation unit is used to generate the upper initial skeleton structure of the central cell. A circle is drawn on the sphere with the geometric center point of the central cell as the center point and the desired rib length as the radius, using any point on the sphere as the geometric center point. A regular hexagon is drawn with the circle as the enveloping circle. The lines connecting the six vertices of the regular hexagon and the geometric center point form six ribs, which constitute the upper initial skeleton structure of the central cell.

[0059] Generate a skeleton structure generation unit for other cells, which is used to generate the skeleton structure of other cells. The skeleton structure of other cells is generated in units of ribs. The newly generated ribs are connected to the ribs, so the vertex at one end of the newly generated rib is known. The two vertices of the newly generated ribs are used as key points. The set of key points of all ribs in a single cell is used as the key point of the cell. The key point to be generated is determined by the existing geometric constraints. If the existing geometric constraints uniquely determine the position of the key point, the key point is established according to the existing geometric constraints. Otherwise, a new geometric constraint is established. The key point is established based on the original geometric constraint and the new geometric constraint is combined to establish the key point until the position of the key point is determined.

[0060] The skeleton structure generation unit is used to gradually generate all ribs and key points along the path from the center to the edge, update all key points to generate gaps between cells; extend the key points along the direction from the center of the sphere to itself by the distance of a back frame to obtain new key points; connect the key points in sequence to obtain the skeleton structure of the entire cell.

[0061] A computer storage medium includes computer instructions, which, when executed on a computer, cause the computer to execute the method described above.

[0062] An electronic device, comprising:

[0063] A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein:

[0064] When the processor executes the program, the method described is implemented.

[0065] In one embodiment, see Figure 2 , showing the configuration of the antenna cell skeleton, the smallest unit is a spatial rhombus on a sphere. Assuming that the established cell skeleton structure meets the design requirements of equal rib length, the side lengths of all rhombuses are equal. This conclusion provides an important basis for subsequent design.

[0066] See also Figure 3 , showing two types of vertex sharing forms of space rhombus, type 1 vertex 1 and type 2 vertex 2. Type 1 vertex 1 is shared by 3 space rhombuses, and type 2 vertex 2 is shared by 6 space rhombuses. In the antenna skeleton structure, there are only these two types of vertex sharing forms.

[0067] See also Figure 4 , demonstrating the generation process of the central cell's upper skeleton structure. Using any point on the sphere as the geometric center of the central cell, draw a circle on the sphere with this geometric center as the center and the desired rib length as the radius. Construct any regular hexagon enclosing this circle. The lines connecting the six vertices of the hexagon and the geometric center form six ribs, which together form the initial upper skeleton structure of the central cell.

[0068] See also Figure 5 , showing the configuration of the upper skeleton structure of the central cell, which includes a center point and 6 vertices. The distance from the center point to the 6 vertices is equal to the expected rib length, and the 6 vertices form a regular hexagon.

[0069] See also Figures 6 and 7 This paper demonstrates a method for determining key points when the existing geometric constraints uniquely determine their positions. In this case, a key point d to be established forms a spatial rhombus on a sphere with the key points a, b, and c of the known rib. A symmetry plane α is formed by the sphere's center, the known points b, and c. Point d to be established is symmetrical with point a about symmetry plane α. This determines the position of key point d. Connecting points b and d, and c and d, line segments bd and cd form the newly generated rib.

[0070] See also Figures 8 to 12 , shows the method of establishing key points when the existing geometric constraints cannot uniquely determine the key point positions of the rib to be established. Figure 8 , at this time, there is no new key point that can form a spatial rhombus on the sphere with the key points of the existing ribs, so consider establishing a new geometric constraint. The design requires that the configurations between the cells are as equal as possible, that is, the spatial rhombus configurations composed of the ribs are also as equal as possible. Therefore, on the basis of the aforementioned constraint of equal side lengths of the spatial rhombuses, the constraint of equal angles of the spatial rhombuses is added. Adding the constraint of spatial rhombus angles means that the newly established key points and their ribs can uniquely determine the internal angles of the rhombus, that is, the newly constructed key points can completely constitute any of the two types of vertex sharing forms. Obviously, when only one key point is added, only the generated Figure 9 The key points at the positions shown can completely constitute one of the two types of vertex sharing forms. Figure 10 Although the key point at the position shown participates in the two types of vertex sharing, it can only form part of the two types of vertex sharing. Another key point needs to be established to meet the requirements of the complete formation of the two types of vertex sharing. In summary, the next step of the key point construction position can only be as follows Figure 9 Key points at the locations shown.

[0071] See also Figure 11If the angles of each spatial rhombus are required to be equal, it is obvious that the line connecting the key point f to be established and the shared vertex e can bisect the external angle geh. Then the point to be established is on the plane determined by the center of the sphere, point e and point i. With the constraints of equal rib length and the point to be established on the sphere, the position of the point to be established can be uniquely determined. The line segment connecting the point to be established f and point e is the newly generated rib. The ribs in other directions are generated according to the above rules, and the effect is as follows: Figure 12 .

[0072] See also Figure 13 , continue to generate new key points according to the above two rules, and stop generating when the number of cell circles reaches the requirement, and obtain the initial upper skeleton structure of the entire cell.

[0073] See also Figures 14 and 15 Using a pair of connected ribs as an example, this paper demonstrates how to update key points to create a cell gap. On the two connected ribs, find points j and k. The line segment formed by these two points is parallel to the line connecting the center points of the cells to which the two ribs belong, and the distances moved along the line are equal, which is equal to half the desired cell gap width. Repeat this operation for all rib connection points to obtain a preliminary cell gap. At this point, points j and k are not on the sphere. Project these two points onto the sphere from the center of the sphere to itself, and use the projected points as new key points. The cell skeleton structure formed by these new key points now meets the design requirements of equal configuration and equal gaps between cells. The error generated by this method is extremely small and can be ignored in engineering. After this step, the entire cell upper skeleton structure is obtained.

[0074] See also Figures 16 and 17 , all key points are moved along the direction from the center of the sphere to itself by the distance of a back frame to obtain the key points of the lower skeleton structure of the entire cell. All key points are connected in sequence to obtain the skeleton structure of the entire cell. In summary, this modular space reflector antenna skeleton structure design method generates ribs of equal length from the center to the edge according to certain rules based on the initial rib size and the size of the sphere to be fitted. The key points of the ribs are then updated according to a certain strategy. Finally, the antenna skeleton structure is successfully fitted using a spherical surface, ensuring that the length of each rib and the cell gap are equal within the allowable error range, while meeting the folding and expansion requirements of the modular antenna cell and the installation requirements of the adaptive structure.

[0075] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments and application fields. The above-mentioned specific embodiments are merely illustrative and instructive, and are not restrictive. A person skilled in the art, guided by this specification and without departing from the scope of protection of the claims of the present invention, may also devise various forms, all of which fall within the scope of protection of the present invention.

Claims

1. A method for generating a modular space antenna cell skeleton structure with equal rib length and equal gap, characterized in that: The steps include: Generate an upper initial skeleton structure of the central cell, wherein any point on the sphere is used as the geometric center point of the central cell, a circle is drawn on the sphere with the geometric center point as the center and the desired rib length as the radius, and an arbitrary regular hexagon is drawn with the circle as the enveloping circle. The lines connecting the six vertices of the regular hexagon and the geometric center point form six ribs, and these six ribs constitute the upper initial skeleton structure of the central cell; Generate the skeleton structure of other cells. The skeleton structure of other cells is generated in units of ribs. The newly generated ribs are connected to the ribs. Therefore, the vertex at one end of the newly generated rib is known. The two vertices of the newly generated ribs are used as key points. The set of key points of all ribs in a single cell is used as the key point of the cell. The key point to be generated is determined by the existing geometric constraints. If the existing geometric constraints uniquely determine the position of the key point, the key point is established according to the existing geometric constraints. Otherwise, a new geometric constraint is established. The key point is established based on the original geometric constraint and the new geometric constraint is combined to establish the key point until the position of the key point is determined. All ribs and key points are gradually generated along the path from the center to the edge, and all key points are updated to generate gaps between cells; the key points are extended along the direction from the center of the sphere to itself by a back frame distance to obtain new key points; and the key points are connected in sequence to obtain the skeleton structure of the entire cell.

2. The method for generating a modular space antenna cell skeleton structure with equal rib length and equal gap according to claim 1, characterized in that: The peripheral vertices of the six ribs of the central cell are connected to form a regular hexagon, and the rib length is variable.

3. The method for generating a modular space antenna cell skeleton structure with equal rib length and equal gap according to claim 1, characterized in that: The geometric constraints are determined by the geometric properties of spatial rhombuses on the sphere.

4. The method for generating a modular space antenna cell skeleton structure with equal rib length and equal gap according to claim 3, characterized in that: The opposite vertices of the spatial rhombus on the sphere are symmetrical along the symmetry plane.

5. The method for generating a modular space antenna cell skeleton structure with equal rib length and equal gap according to claim 4, characterized in that: The symmetry plane is determined by the center of the sphere and another pair of vertices of the spatial rhombus on the sphere.

6. The method for generating a modular space antenna cell skeleton structure with equal rib length and equal gap according to claim 1, characterized in that: The modular space antenna cell skeleton structure is a symmetrical structure.

7. A system for generating a cell skeleton of an equal-gap modular space reflector antenna, characterized in that: It includes, An upper layer initial skeleton structure generating unit is used to generate an upper layer initial skeleton structure of the central cell, wherein any point on the spherical surface is used as the geometric center point of the central cell, and six points with a distance of 60 degrees between them are searched for along six directions with a distance of 60 degrees, and the six points are all located on the spherical surface. The geometric center point is respectively connected to the six points, and the geometric center point and the six points respectively form ribs to constitute the upper layer initial skeleton structure of the central cell; Generate a skeleton structure generation unit for other cells, which is used to generate the skeleton structure of other cells. The skeleton structure of other cells is generated in units of ribs. The newly generated ribs are connected to the ribs, so the vertex at one end of the newly generated rib is known. The two vertices of the newly generated ribs are used as key points. The set of key points of all ribs in a single cell is used as the key point of the cell. The key point to be generated is determined by the existing geometric constraints. If the existing geometric constraints uniquely determine the position of the key point, the key point is established according to the existing geometric constraints. Otherwise, a new geometric constraint is established. The key point is established based on the original geometric constraint and the new geometric constraint is combined to establish the key point until the position of the key point is determined. The skeleton structure generation unit is used to gradually generate all ribs and key points along the path from the center to the edge, update all key points to generate gaps between cells; extend the key points along the direction from the center of the sphere to itself by the distance of a back frame to obtain new key points; connect the key points in sequence to obtain the skeleton structure of the entire cell.

8. A computer storage medium, characterized in that The storage medium includes computer instructions, which, when executed on a computer, enable the computer to execute the method according to any one of claims 1 to 6.

9. An electronic device, characterized in that: The electronic device comprises: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the method according to any one of claims 1 to 6 is implemented.

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