CN115549765B - Multi-beam arrangement method for satellite - Google Patents
Multi-beam arrangement method for satellite Download PDFInfo
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- CN115549765B CN115549765B CN202211198403.2A CN202211198403A CN115549765B CN 115549765 B CN115549765 B CN 115549765B CN 202211198403 A CN202211198403 A CN 202211198403A CN 115549765 B CN115549765 B CN 115549765B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
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Abstract
The application provides a satellite multi-beam arrangement method, which comprises the following steps: acquiring an antenna type spectrum of a satellite, and obtaining a selectable beam width set of the antenna type spectrum, wherein the selectable beam width set comprises different beam widths of different target beams; determining an optimal arrangement angle of the target beams so that the target beams cover the service area and the beam number of the target beams is minimum; the arrangement angle is an included angle between the central connecting line of two adjacent beams and the equator; acquiring the capacity of a repeater, the capacity requirement of a service area and the number of beams corresponding to a target beam, and calculating a frequency multiplexing factor; acquiring a target multiplexing factor of a service area; determining the optimal beam in all target beams, wherein the frequency multiplexing factor corresponding to the optimal beam is equal to or closest to the target multiplexing factor; and outputting the beam width of the optimal beam and the corresponding optimal arrangement angle. Through the steps, the capacity of the transponder is matched with the capacity requirement of the wave beam, meanwhile, the wave beam arrangement cost is reduced, and the resource utilization rate is higher.
Description
Technical Field
The present disclosure relates generally to the field of satellite communications, and in particular, to a satellite multi-beam arrangement method.
Background
The high-flux satellite generally adopts a multi-point wave beam coverage and frequency multiplexing technology, and can greatly improve the whole satellite capacity under the condition of the same frequency spectrum resource;
in the design stage of the satellite system, the beam width and arrangement mode (such as beam arrangement angle) of spot beams in a service area directly determine the number of beams covered in the area and the capacity of single beams, so that the satellite design cost and the user experience are greatly affected;
in the prior art, coverage is generally realized by aiming at different service areas in a fixed arrangement mode and different beam numbers; this is prone to mismatch between satellite transponder and single beam capacity, and power bandwidth resources are wasted in a fixed arrangement.
Disclosure of Invention
In view of the foregoing drawbacks or shortcomings of the prior art, it is desirable to provide a satellite multi-beam arrangement method that solves the foregoing technical problems.
The first aspect of the present application provides a satellite multi-beam arrangement method, including:
acquiring an antenna type spectrum of a satellite, and obtaining a selectable beam width set corresponding to the antenna type spectrum, wherein the selectable beam width set comprises different beam widths of different target beams A i;
Determining an optimal arrangement angle of the target beam A i so as to enable the target beam to cover a service area and the beam number of the target beam to be minimum; the arrangement angle is an included angle between the central connecting line of two adjacent beams and the equator;
Acquiring a transponder capacity Q 1, a capacity requirement Q 2 of the service area and a beam number m i corresponding to the target beam a i, and calculating a frequency multiplexing factor f;
acquiring a target multiplexing factor corresponding to the service area;
determining an optimal beam A g of A i in all the target beams, wherein a frequency multiplexing factor f corresponding to the optimal beam A g is equal to or most approximate to the target multiplexing factor;
And outputting the beam width of the optimal beam A g and the corresponding optimal arrangement angle.
According to the technical scheme provided by the embodiment of the application, the method for determining the optimal beam A g in all the target beams A i comprises the following steps:
s51, selecting a beam width b from the screening range of the selectable beam set by a dichotomy to obtain a frequency multiplexing factor f corresponding to the beam width b; the initial value of the screening range is the full range;
And s52, comparing the frequency multiplexing factor f with the target multiplexing factor, reducing the screening range according to the comparison result, and repeating the step s51 until the optimal beam A g is obtained.
According to the technical scheme provided by the embodiment of the application, the step s51 specifically comprises the following steps:
s511, obtaining a minimum beam width b min and a maximum beam width b max of the selectable beam width set;
s512, calculating an optimized beam width b according to the formula (one):
and s513, selecting the beam width b of the target beam closest to the optimized beam width b in the selectable beam width set, and obtaining a frequency multiplexing factor f corresponding to the beam width b.
According to the technical scheme provided by the embodiment of the application, the step s52 specifically comprises:
When judging that the frequency multiplexing factor f is greater than the target multiplexing factor, assigning the beam width b to a minimum beam width b min, keeping the maximum beam width b max unchanged, and repeating the steps s512-s513;
When judging that the frequency multiplexing factor f is smaller than the target multiplexing factor, assigning the beam width b to a maximum beam width b max, keeping the minimum beam width b min unchanged, and repeating the steps s512-s513;
And when judging that the frequency multiplexing factor f is equal to the target multiplexing factor or the beam width b is polled for the second time, outputting the beam width b as the beam width of the optimal beam.
According to the technical scheme provided by the embodiment of the application, the method for determining the optimal arrangement angle of the target beam A i comprises the following steps:
setting an arrangement reference position at the lowest latitude point of the service area, wherein the arrangement reference position represents the center of a first beam to be arranged;
Covering the beams in the service area respectively at different arrangement angles to obtain a plurality of beam numbers corresponding to the different arrangement angles;
And selecting an arrangement angle corresponding to the minimum value in all the beam numbers to obtain the optimal arrangement angle.
According to the technical scheme provided by the embodiment of the application, the method for covering the beam in the service area comprises the following steps: and completing coverage arrangement of the service area through a hexagonal coverage formula.
According to the technical scheme provided by the embodiment of the application, the arrangement angle is more than or equal to 0 degree and less than 60 degrees.
According to the technical scheme provided by the embodiment of the application, the frequency multiplexing factor f is calculated by the following steps:
calculating a single beam capacity requirement q according to formula (two):
Calculating a frequency reuse factor f according to formula (III):
A second aspect of the present application provides a terminal device comprising a memory, a processor and a computer program stored in the memory and operable on the processor, the processor implementing the steps of a multi-beam arrangement method for a satellite as described above when the computer program is executed by the processor.
A third aspect of the application provides a computer readable storage medium having a computer program which, when executed by a processor, performs the steps of a multi-beam arrangement method for a satellite as described above.
The application has the beneficial effects that: the optimal arrangement mode is defined, namely, the optimal arrangement angle under a certain beam width is screened, so that the target beam covers a service area and the beam number of the target beam is minimum, and the minimum beam number m i under different beam widths and corresponding optimal arrangement angles is obtained; obtaining the capacity requirement Q 2 of the service area by obtaining the capacity Q 1 of the repeater, so as to obtain the frequency multiplexing factors f of different target beams A i (corresponding to different beam numbers m i); comparing the frequency multiplexing factor f calculated by different target beams in an optimal arrangement mode with the target multiplexing factor, and screening out the optimal beam width from the selectable beam width set; and further, an optimal arrangement mode (comprising an optimal arrangement angle and a minimum beam number) of the beams with the optimal beam width covering the service area is obtained. Through the steps, the optimal beam width and the optimal arrangement angle of the beams with the optimal beam width are determined, the capacity of the transponder is matched with the capacity requirement of the beams, and meanwhile, the beam arrangement cost is reduced and the resource utilization rate is higher.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
Fig. 1 is a schematic diagram of a satellite multi-beam arrangement method according to the present application;
Fig. 2 is a schematic diagram of an optimal beam arrangement in a service area a;
fig. 3 is a schematic diagram of beam arrangement optimized for a B service area;
fig. 4 is a schematic diagram of a terminal device according to the present application.
Detailed Description
The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
Fig. 1 is a schematic diagram of a satellite multi-beam configuration method according to the present application, including:
S1: acquiring an antenna type spectrum of a satellite, and obtaining a selectable beam width set corresponding to the antenna type spectrum, wherein the selectable beam width set comprises different beam widths of different target beams A i;
S2: determining an optimal arrangement angle of the target beam A i so as to enable the target beam to cover a service area and the beam number of the target beam to be minimum; the arrangement angle is an included angle between the central connecting line of two adjacent beams and the equator;
S3: acquiring a transponder capacity Q 1, a capacity requirement Q 2 of the service area and a beam number m i corresponding to the target beam a i, and calculating a frequency multiplexing factor f;
S4: acquiring a target multiplexing factor corresponding to the service area;
S5: determining an optimal beam A g of A i in all the target beams, wherein a frequency multiplexing factor f corresponding to the optimal beam A g is equal to or most approximate to the target multiplexing factor;
S6: and outputting the beam width of the optimal beam A g and the corresponding optimal arrangement angle.
Specifically, the antenna-type spectrum includes: user link frequency band, beam width, multi-beam forming type (comprising two modes of single feed source per beam and multi feed source per beam), antenna caliber, preset frequency multiplexing factor, transmitting antenna gain, receiving antenna gain, transmitting signal-to-interference ratio, receiving signal-to-interference ratio and the like; the preset frequency multiplexing factor is used for screening antenna parameters corresponding to each beam width under the constraint of a repeater;
Specifically, each antenna type spectrum corresponds to a set of selectable beamwidths applicable thereto; the selectable beam width set comprises a plurality of selectable beam widths;
specifically, the service area is a target area to be covered, for example, it may be a country, a continent, or a set irregular area.
Specifically, the transponder capacity Q 1 is a satellite transponder capacity; the satellite transponder is installed on a satellite as an unattended relay station and is a device for realizing long-distance communication. The transponder capacity Q 1 can be calculated from the bandwidth, output power and link of the traveling wave tube amplifier.
It can be understood that the optimal beam a g is the optimal beam in all the target beams a i, so that the optimal arrangement angle of the optimal beam a g can be obtained through step S2 after the optimal beam a g is obtained.
It can be understood that the beam number m i corresponding to the target beam a i refers to the minimum beam number covered in the service area at the optimal arrangement angle under the beam width of the target beam a i.
The application aims to solve the technical problems that in the prior art, the beam arrangement method is single, the cost is higher, and the transponder resource is not matched with the capacity requirement of each beam;
Based on the above, the multi-beam arrangement method of the satellite provided by the application has the advantages that the beam width influences the selection of the beam arrangement angle; the coverage of the service area with the optimized beam arrangement angle under a certain beam width will obtain the required beam number, which is related to the frequency reuse factor f, so that the selection of the beam width is adversely affected by the optimized beam arrangement angle. The core concept of the application is to realize the optimization of the beam width and the beam arrangement angle by a multi-beam arrangement method so as to solve the technical problems of higher cost and resource waste caused by the mismatching of the transponder resource and the beam capacity requirement in the prior art and the single beam arrangement method.
In order to facilitate the full understanding of the technical principles of the present application by those skilled in the art, the following detailed description is provided:
firstly, acquiring an antenna type spectrum of a satellite, and obtaining a selectable beam width set corresponding to the antenna type spectrum, wherein the selectable beam width set comprises different beam widths of different target beams A i;
And secondly, defining an optimal arrangement mode, namely, screening an optimal arrangement angle under a certain beam width to ensure that the target beam covers a service area and the beam number of the target beam is minimum. Thus, the minimum beam number m i under different beam widths and corresponding optimal arrangement angles is obtained; obtaining the capacity requirement Q 2 of the service area by obtaining the capacity Q 1 of the repeater, so as to obtain the frequency multiplexing factors f of different target beams A i (corresponding to different beam numbers m i);
Finally, comparing the frequency multiplexing factor f calculated by different target beams in an optimal arrangement mode with the target multiplexing factor, and screening out the optimal beam width from the selectable beam width set; and further, an optimal arrangement mode (comprising an optimal arrangement angle and a minimum beam number) of the beams with the optimal beam width covering the service area is obtained.
Through the steps, the optimal beam width and the optimal arrangement angle of the beams with the optimal beam width are determined, and the capacity of the transponder is matched with the capacity requirement of the beams; meanwhile, on the premise of meeting the coverage service area, the number of the arranged beams is reduced to the greatest extent, the beam arrangement cost is reduced, and the resource utilization rate is improved. Meanwhile, when the geographic distribution of the service demands is uneven, the method provided by the application can realize parallel optimization of the beam width and the arrangement mode of each area for a plurality of areas with different demand densities, and has stronger adaptability.
In some embodiments, the frequency reuse factor f is calculated by:
calculating a single beam capacity requirement q according to formula (two):
Calculating a frequency reuse factor f according to formula (III):
In some embodiments, the method of determining the optimal beam a g of all of the target beams a i comprises:
s51, selecting a beam width b from the screening range of the selectable beam set by a dichotomy to obtain a frequency multiplexing factor f corresponding to the beam width b; the initial value of the screening range is the full range;
And s52, comparing the frequency multiplexing factor f with the target multiplexing factor, reducing the screening range according to the comparison result, and repeating the step s51 until the optimal beam A g is obtained.
In the above steps, the automatic searching of the optimal beam width is realized by the dichotomy, the screening range is continuously reduced in the searching process, and the reducing direction of the reduced range is determined by the comparison result of the frequency multiplexing factor and the target multiplexing factor, so that the searching speed is improved, and the screening efficiency is improved.
Example 2
On the basis of embodiment 1, in some embodiments, step s51 specifically includes:
s511, obtaining a minimum beam width b min and a maximum beam width b max of the selectable beam width set;
s512, calculating an optimized beam width b according to the formula (one):
and s513, selecting the beam width b of the target beam closest to the optimized beam width b in the selectable beam width set, and obtaining a frequency multiplexing factor f corresponding to the beam width b.
In some embodiments, step s52 specifically includes:
When judging that the frequency multiplexing factor f is greater than the target multiplexing factor, assigning the beam width b to a minimum beam width b min, keeping the maximum beam width b max unchanged, and repeating the steps s512-s513;
When judging that the frequency multiplexing factor f is smaller than the target multiplexing factor, assigning the beam width b to a maximum beam width b max, keeping the minimum beam width b min unchanged, and repeating the steps s512-s513;
And when judging that the frequency multiplexing factor f is equal to the target multiplexing factor or the beam width b is polled for the second time, outputting the beam width b as the beam width of the optimal beam.
In the above step, the first selected beam width b adjacent to the intermediate value is obtained by calculating the intermediate value of the beam widths in the selectable beam width set;
Therefore, the frequency multiplexing factor f corresponding to the beam width b is calculated, the frequency multiplexing factor f is compared with a target multiplexing factor, and the screening range is continuously reduced according to the comparison result. For example, when the frequency reuse factor f is determined to be greater than the target reuse factor, the beam width b is assigned to the minimum beam width b min, and the filtering range is changed from b min to b max to b max;
Calculating the intermediate value between b and b max again, thereby obtaining a second selected beam width b adjacent to the intermediate value;
and so on, outputting the final beam width b as the beam width of the optimal beam until the frequency multiplexing factor f is equal to the target multiplexing factor or the beam width b is judged to be equal to the second polling.
Example 3
On the basis of embodiment 1, in some embodiments, the method for determining the optimal arrangement angle of the target beam a i includes:
setting an arrangement reference position at the lowest latitude point of the service area, wherein the arrangement reference position represents the center of a first beam to be arranged;
Covering the beams in the service area respectively at different arrangement angles to obtain a plurality of beam numbers corresponding to the different arrangement angles;
And selecting an arrangement angle corresponding to the minimum value in all the beam numbers to obtain the optimal arrangement angle.
Specifically, different arrangement angles can be set according to actual requirements, for example, in the embodiment, the different arrangement angles are set to be 0 degrees, 20 degrees and 40 degrees respectively; further, the beam arrangement is covered in the service area according to the three arrangement angles respectively, and three beam numbers are correspondingly obtained; and selecting an arrangement angle corresponding to the minimum value of the wave beam number, and taking the arrangement angle as an optimal arrangement angle.
In other embodiments, the placement reference position may also be set to other positions of the edge of the service area, such as the highest point of the service area;
In some embodiments, the method of covering the beam within the service area is: and completing coverage arrangement of the service area through a hexagonal coverage formula.
Let the beam radius be R, the angle of arrangement be alpha, the coordinates of the central beam be (x 0,y0), the coordinates of the six surrounding beams calculated according to the hexagonal formula are respectively:
i＝1,…,6
In some embodiments, the arrangement angle is 0 degrees or greater and less than 60 °.
Example 4
For the convenience of understanding of those skilled in the art, the present embodiment is described with a specific example:
Example 1: consider a service area-A service area
The service requirement in the area is set to 71Gbps, the target frequency multiplexing factor is 4, the forward and backward transponder bandwidths are 500MHz, and the output power is 90W;
the beam arrangement preset angle is as follows: 0 °,20 °,40 °; the set of selectable beamwidths is: {0.25 °,0.3 °,0.35 °,0.4 °,0.45 °,0.5 °,0.55 °,0.6 °,0.7 °,0.8 °,0.9 °,1 ° };
the optimal beam width of 0.4 degrees can be obtained by the method provided by the application; the optimal single beam capacity is 747.37Mbps; fig. 2 shows an optimal beam arrangement scheme in the a service area output by the proposed method, wherein the optimal arrangement angle is 20 ° and the beam number is 79.
Example 2: consider a service area-B service area
The service requirement of the area is set to be 14.4Gbps, and other parameters are the same as the above;
the optimal beam width of 0.6 degrees can be obtained by the method provided by the application; the optimal single beam capacity is 450Mbps; fig. 3 shows an optimal beam arrangement scheme in the B service area output by the proposed method, where the optimal arrangement angle is 0 ° and the number of beams is 24.
Example 5
The embodiment provides a terminal device, which comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor realizes the steps of the satellite multi-beam arrangement method when executing the computer program.
As shown in fig. 4, the terminal apparatus 700 includes a Central Processing Unit (CPU) 701, which can perform various appropriate actions and processes according to a program stored in a Read Only Memory (ROM) 702 or a program loaded from a storage section into a Random Access Memory (RAM) 703. In a Random Access Memory (RAM) 703, various programs and data necessary for the operation of the system are also stored. A Central Processing Unit (CPU) 701, a Read Only Memory (ROM) 702, and a Random Access Memory (RAM) 703 are connected to each other through a bus 704. An input/output (I/O) interface 705 is also connected to bus 704.
The following components are connected to an input/output (I/O) interface 705: an input section 706 including a keyboard, a mouse, and the like; an output portion 707 including a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, a speaker, and the like; a storage section 708 including a hard disk or the like; and a communication section 709 including a network interface card such as a LAN card, a modem, or the like. The communication section 709 performs communication processing via a network such as the internet. The drives are also connected to an input/output (I/O) interface 705 as needed. A removable medium 711 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 710 as necessary, so that a computer program read therefrom is mounted into the storage section 708 as necessary.
In particular, the process described above with reference to flowchart 1 may be implemented as a computer software program according to an embodiment of the application. For example, embodiment 1 of the present application includes a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method shown in the flowchart. In such embodiments, the computer program may be downloaded and installed from a network via a communication portion, and/or installed from a removable medium. The above-described functions defined in the system of the present application are performed when the computer program is executed by a Central Processing Unit (CPU) 701.
Example 6
The present embodiment provides a computer readable storage medium having a computer program which, when executed by a processor, implements the steps of a multi-beam arrangement method for a satellite as described above.
The computer readable medium shown in the present invention may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present invention, however, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units involved in the embodiments of the present invention may be implemented by software, or may be implemented by hardware, and the described units may also be provided in a processor. Wherein the names of the units do not constitute a limitation of the units themselves in some cases. The described units or modules may also be provided in a processor, for example, as: a processor comprises an acquisition module and a data processing module.
Wherein the names of the units or modules do not constitute a limitation of the units or modules themselves in some cases;
As another aspect, the present application also provides a computer-readable medium that may be contained in the electronic device described in the above embodiment; or may exist alone without being incorporated into the electronic device. The computer-readable medium carries one or more programs which, when executed by one of the electronic devices, cause the electronic device to implement the multi-beam arrangement method of satellites as in the above embodiments:
S1: acquiring an antenna type spectrum of a satellite, and obtaining a selectable beam width set corresponding to the antenna type spectrum, wherein the selectable beam width set comprises different beam widths of different target beams A i;
S2: determining an optimal arrangement angle of the target beam A i so as to enable the target beam to cover a service area and the beam number of the target beam to be minimum; the arrangement angle is an included angle between the central connecting line of two adjacent beams and the equator;
S3: acquiring a transponder capacity Q 1, a capacity requirement Q 2 of the service area and a beam number m i corresponding to the target beam a i, and calculating a frequency multiplexing factor f;
S4: acquiring a target multiplexing factor corresponding to the service area;
S5: determining an optimal beam A g of A i in all the target beams, wherein a frequency multiplexing factor f corresponding to the optimal beam A g is equal to or most approximate to the target multiplexing factor;
S6: and outputting the beam width of the optimal beam A g and the corresponding optimal arrangement angle.
It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.
Furthermore, although the steps of the methods in the present disclosure are depicted in a particular order in the drawings, this does not require or imply that the steps must be performed in that particular order, or that all illustrated steps be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.
Claims (10)
1. A method of multibeam distribution for a satellite, comprising:
acquiring an antenna type spectrum of a satellite, and obtaining a selectable beam width set corresponding to the antenna type spectrum, wherein the selectable beam width set comprises different beam widths of different target beams A i;
Determining an optimal arrangement angle of the target beam A i so as to enable the target beam to cover a service area and the beam number of the target beam to be minimum; the arrangement angle is an included angle between the central connecting line of two adjacent beams and the equator;
Acquiring a transponder capacity Q 1, a capacity requirement Q 2 of the service area and a beam number m i corresponding to the target beam a i, and calculating a frequency multiplexing factor f;
acquiring a target multiplexing factor corresponding to the service area;
Determining an optimal beam A g in all target beams A i, wherein a frequency multiplexing factor f corresponding to the optimal beam A g is equal to or most approximate to the target multiplexing factor;
And outputting the beam width of the optimal beam A g and the corresponding optimal arrangement angle.
2. The method of satellite multi-beam placement according to claim 1, wherein determining the optimal beam a g of all of the target beams a i comprises:
s51, selecting a beam width b from the screening range of the selectable beam width set by a dichotomy to obtain a frequency multiplexing factor f corresponding to the beam width b; the initial value of the screening range is the full range;
And s52, comparing the frequency multiplexing factor f with the target multiplexing factor, reducing the screening range according to the comparison result, and repeating the step s51 until the optimal beam A g is obtained.
3. The method of multibeam distribution for satellites according to claim 2 wherein,
Step s51 specifically includes:
s511, obtaining a minimum beam width b min and a maximum beam width b max of the selectable beam width set;
s512, calculating an optimized beam width b according to the formula (one):
and s513, selecting the beam width b of the target beam closest to the optimized beam width b in the selectable beam width set, and obtaining a frequency multiplexing factor f corresponding to the beam width b.
4. The method of claim 3, wherein the satellite comprises a plurality of satellites,
Step s52 specifically includes:
When judging that the frequency multiplexing factor f is greater than the target multiplexing factor, assigning the beam width b to a minimum beam width b min, keeping the maximum beam width b max unchanged, and repeating the steps s512-s513;
When judging that the frequency multiplexing factor f is smaller than the target multiplexing factor, assigning the beam width b to a maximum beam width b max, keeping the minimum beam width b min unchanged, and repeating the steps s512-s513;
And when judging that the frequency multiplexing factor f is equal to the target multiplexing factor or the beam width b is polled for the second time, outputting the beam width b as the beam width of the optimal beam.
5. The method of claim 1, wherein determining the optimal placement angle for the target beam a i comprises:
setting an arrangement reference position at the lowest latitude point of the service area, wherein the arrangement reference position represents the center of a first beam to be arranged;
Covering the beams in the service area respectively at different arrangement angles to obtain a plurality of beam numbers corresponding to the different arrangement angles;
And selecting an arrangement angle corresponding to the minimum value in all the beam numbers to obtain the optimal arrangement angle.
6. The method of claim 5, wherein the method of covering the beams in the service area is: and completing coverage arrangement of the service area through a hexagonal coverage formula.
7. The method of claim 5, wherein the arrangement angle is 0 degrees or more and 60 degrees or less.
8. The method of satellite multibeam distribution according to claim 1, wherein the frequency reuse factor f is calculated by:
calculating a single beam capacity requirement q according to formula (two):
Calculating a frequency reuse factor f according to formula (III):
9. Terminal device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the multi-beam arrangement method of the satellite according to any one of claims 1 to 8 when the computer program is executed.
10. A computer-readable storage medium storing a computer program, characterized in that the computer program when executed by a processor implements the steps of the multi-beam placement method of a satellite according to any one of claims 1 to 8.
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| CN113783601A (en) * | 2021-08-31 | 2021-12-10 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Dynamic beam forming and space division multiplexing method |
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| CN113783601A (en) * | 2021-08-31 | 2021-12-10 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Dynamic beam forming and space division multiplexing method |
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