A data transmission mission planning method, system and product for a spot beam dual-antenna satellite

Abstract

The present invention belongs to the field of satellite data transmission mission planning, and provides a data transmission mission planning method, system and product for a spot beam dual antenna satellite. The technical solution is to first obtain a set of data transmission windows of the satellite passing through the ground station according to satellite orbit parameters, ground station configuration information, and the start and end time of the data transmission planning task, and remove the data transmission windows that do not meet the conditions from the set according to the satellite and ground station constraints; calculate the spot beam antenna used for each data transmission window through the satellite spot beam dual antenna data transmission allocation algorithm; then, based on the dual-station relay transmission planning algorithm, combine the single-station data transmission windows that have matched the spot beam antenna into a composite data transmission window, and finally generate a data transmission mission planning file according to the agreed format. The problem of allocation of satellite spot beam dual antennas and ground stations during transmission and how to plan dual-station relay transmission is solved, and data transmission mission planning for spot beam dual antenna satellites is realized.

Description

Technical Field

[0001] The present invention belongs to the field of satellite data transmission mission planning, and in particular relates to a data transmission mission planning method, system and product for a spot beam dual-antenna satellite. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Satellite data transmission is the use of artificial satellites to achieve long-distance transmission of binary-coded letters, numbers, symbols, digital images and other information. When satellite data is transmitted downlink, the satellite acts as the sender of data transmission, and the ground station acts as the receiver of data transmission. The mission data generated by the satellite when performing the mission is transmitted downlink to the ground station through real-time transmission or storage playback. The use of spot beam data transmission antennas on satellites can greatly increase the omnidirectional equivalent radiated power, improve the channel transmission bit rate of the satellite data transmission system, and increase the amount of mission data transmitted downlink. The use of high-gain spot beam antennas will result in a reduction in the beam coverage range. Usually, satellites are designed with two independent spot beam antennas located on the left and right sides of the satellite. Satellite data transmission mission planning is to plan the available data transmission windows when the satellite passes by according to the idle ground station equipment and reasonably allocate limited resources. The existing satellite data transmission mission planning mostly considers the single antenna situation, and does not need to consider the allocation of onboard antennas to ground stations. However, for the data transmission mission planning of spot beam dual antenna satellites, how to plan the allocation of satellite spot beam dual antennas with ground stations during transmission and how to plan the dual-station relay transmission of mission data are the core and difficulty of the data transmission mission planning of spot beam dual antenna satellites.

[0004] Existing solutions, such as the publication number CN106301511B, the invention name is a satellite-borne data transmission antenna to the ground relay transmission system and its control method, which proposes a method for tracking the position of the ground station by two-dimensional rotation of the antenna when the satellite-borne spot beam two-dimensional mechanical scanning data transmission antenna transmits signals to the ground. The preset angles and other parameters of the two independent data transmission antennas (front antenna and rear antenna) on the satellite are set through the preset instructions sent by the satellite to achieve relay transmission to the ground station, but it does not involve how the satellite plans the two-station relay transmission, that is, how the preset instructions sent by the satellite are planned. For example, the publication number CN115173929B, the invention name is to provide a satellite-to-ground high-speed data two-station relay transmission test method and system, which mainly focuses on the two-station relay transmission function and designs a test method, but does not involve how to plan the two-station relay transmission. Another example is the publication number CN113627823B, and the invention name is remote sensing satellite data transmission task planning method and device based on observation task priority. The data transmission task planning combines the observation task priority, observation task data transmission requirements, receiving resource receiving capabilities and other factors, but does not involve the allocation planning of the spot beam dual antenna and the ground station during transmission and the data transmission dual station relay planning. Summary of the invention

[0005] In order to solve at least one technical problem existing in the above-mentioned background technology, the present invention provides a data transmission mission planning method, system and product for a spot-beam dual-antenna satellite, which takes into account the allocation problem of the satellite-borne antenna to the ground station, and plans the data transmission mission planning of the spot-beam dual-antenna satellite, plans the allocation of the satellite spot-beam dual antenna with the ground station during transmission, and plans the dual-station relay transmission of mission data.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A first aspect of the present invention provides a data transmission mission planning method for a spot beam dual-antenna satellite, comprising the following steps:

[0008] According to satellite orbit parameters, ground station configuration information, and the start and end time of data transmission planning, obtain the data transmission window set of the satellite passing through the ground station;

[0009] Based on the principle of using satellite spot beam dual antennas, determine the position of the ground station relative to the satellite, and match the satellite data transmission spot beam antenna used in each data transmission window according to the left and right azimuth relationship of the ground station in the satellite's flight direction;

[0010] When planning the data transmission of the dual-station relay mission of the spot beam dual antenna to the ground station, the single-station data transmission windows that have been matched with the spot beam antenna are combined into a composite data transmission window, and the matching between the satellite's spot beam dual antenna and the dual stations is completed according to the composite data transmission window, and the data transmission mission planning file is generated according to the agreed format.

[0011] Furthermore, the satellite spot beam dual antenna usage principles include:

[0012] When the ground station is located on the right side of the satellite's flight direction, use antenna 1, that is, for the satellite's orbit-raising phase, the ground station is located on the east side of the satellite's lowering line; for the satellite's orbit-descending phase, the ground station is located on the west side of the satellite's lowering line;

[0013] When the ground station is located on the left side of the satellite's flight direction, antenna 2 is used, that is, for the satellite's orbit ascending segment, the ground station is located on the west side of the satellite's lowering line; for the satellite's orbit descending segment, the ground station is located on the east side of the satellite's lowering line.

[0014] Furthermore, the process of determining the position of the ground station relative to the satellite includes:

[0015] Get the start time of a single data transmission window, calculate the satellite orbit at the start time of a single data transmission window, and establish a VVLH coordinate system related to the satellite body based on the satellite orbit and attitude information;

[0016] Get the longitude, latitude and altitude of the ground station, place the longitude, latitude and altitude in the WGS84 coordinate system, and generate the three-dimensional vector coordinates of the ground station in the WGS84 coordinate system ;

[0017] The three-dimensional vector coordinates of the ground station in the WGS84 coordinate system Projected to the VVLH coordinate system, the three-dimensional vector coordinates of the ground station in the satellite VVLH coordinate system are generated , vector coordinates Indicates the relative position of the ground station and the satellite;

[0018] The Y axis of the VVLH coordinate system is defined by the normal vector of the satellite orbital plane, that is, the three-dimensional vector coordinate projected from the ground station to the satellite VVLH coordinate system. middle, It can represent the left-right azimuth relationship between the ground station and the satellite. Since the positive direction of the Y axis is defined by the negative normal of the satellite orbit plane, when >0, the ground station is located on the right side of the satellite's flight direction, and the satellite uses antenna 1 to communicate with the ground station; <0, the ground station is located on the left side of the satellite's flight direction, and the satellite communicates with the ground station using antenna 2. Further, the single-station data transmission windows that have been matched with the spot beam antenna are combined into a composite data transmission window, including:

[0019] When the composite window The end time is greater than The start time of the composite window The end time is less than the single-station transmission window The end time of the single-station transmission window Add composite window In, as A data transmission sub-window and updates the composite window Parameters;

[0020] If the composite window The end time of each station is greater than the single-station transmission window The start time and end time of the data transmission window are determined, and the next single-station data transmission window is processed;

[0021] If the composite window The end time is less than the single-station transmission window The start time of Window cannot be added to a composite window In the composite window Complete the dual-station combination, add it to the composite window list, and create a new composite window Waiting for single-station data transmission window combination;

[0022] in, represents the i-th single-station transmission window, Represents the j-th composite window.

[0023] Furthermore, the matching between the satellite's spot beam dual antennas and dual stations is completed according to the composite data transmission window, including:

[0024] If the first sub-window in the composite data transmission window uses antenna 1, further determine whether the antenna of the second sub-window uses antenna 2. If not, antenna 2 is allocated to the second sub-window. Conversely, if the first sub-window in the composite data transmission window uses antenna 2, further determine whether the antenna of the second sub-window uses antenna 1. If not, antenna 1 is allocated to the second sub-window.

[0025] Furthermore, after obtaining a set of data transmission windows of the satellite passing through the ground station, the obtained data transmission windows are screened according to the usage constraints of the satellite and the ground station, and the data transmission windows that do not meet the conditions are removed from the set.

[0026] Furthermore, the usage constraints of satellites and ground stations include: the ground station is available to the satellite, that is, the ground station supports the data downlink service of the satellite; the antenna of the ground station for receiving data is in an available state and available to the satellite; when a ground station has multiple antennas available to the satellite, the satellite only needs to select one antenna to use; the data transmission duration of a single data transmission window meets the single minimum transmission time.

[0027] Furthermore, the ground station configuration information includes the latitude and longitude coordinates of each ground station in the ground station set, the minimum receiving elevation angle of the carried antenna, and the antenna number; the window in the data transmission window set includes the start time, end time, data transmission duration, and receiving antenna number.

[0028] A second aspect of the present invention provides a data transmission mission planning system for a spot beam dual-antenna satellite, comprising:

[0029] A single-station data transmission window acquisition module is used to obtain a set of data transmission windows of a satellite passing through a ground station according to satellite orbit parameters, ground station configuration information, and the start and end time of data transmission planning;

[0030] Satellite spot beam dual antenna allocation module, which is used to determine the position of the ground station relative to the satellite based on the principle of using satellite spot beam dual antennas, and match the satellite data transmission spot beam antenna used in each data transmission window according to the left and right azimuth relationship of the ground station in the satellite flight direction;

[0031] The dual-station relay transmission planning module is used to combine the single-station data transmission windows that have matched the spot beam antennas into a composite data transmission window when planning the dual-station relay mission data transmission of the spot beam dual antennas to the ground station, complete the matching between the satellite's spot beam dual antennas and the dual stations according to the composite data transmission window, and generate a data transmission mission planning file in an agreed format.

[0032] A third aspect of the present invention provides a program product.

[0033] A program product includes a computer program, and when the computer program is executed by a processor, the steps in the data transmission mission planning method for a spot beam dual-antenna satellite as described above are implemented.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1. The present invention proposes a complete data transmission task planning method for spot beam dual antenna satellites. First, the single station data transmission window is obtained and screened according to the constraint conditions; the spot beam antenna used for each data transmission window is calculated through the satellite spot beam dual antenna data transmission allocation algorithm; then based on the dual station relay transmission planning algorithm, the single station data transmission windows that have been matched with the spot beam antenna are combined into a composite data transmission window, and the matching between the satellite's spot beam dual antenna and the dual station is planned, and finally the data transmission task planning file is generated according to the agreed format. The problem of the allocation of satellite spot beam dual antennas and ground stations during transmission and the problem of how to plan dual station relay transmission are solved.

[0036] 2. The present invention proposes a satellite spot beam dual antenna data transmission allocation algorithm, which generates the three-dimensional vector coordinates of the ground station in the satellite VVLH coordinate system by projecting the three-dimensional vector coordinates of the ground station in the WGS84 coordinate system to the satellite VVLH coordinate system. , which represents the relative position of the ground station and the satellite. Since the positive direction of the Y axis of the VVLH coordinate system is defined by the negative normal of the satellite orbital plane, it can be The value determines whether the ground station is located on the left or right side of the satellite, and combines the principle of using satellite spot beam dual antennas to realize the allocation of satellite data transmission point beam antennas in each data transmission window.

[0037] 3. The present invention proposes a satellite dual-station relay transmission planning algorithm, which optimizes two single-station data transmission windows to form a dual-station relay transmission window, namely a composite data transmission window, and solves the matching problem between the satellite's spot beam dual antennas and the dual stations.

[0038] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0040] Figure 1 It is a flow chart of a data transmission mission planning method for a spot beam dual-antenna satellite provided by an embodiment of the present invention;

[0041] Figure 2 This is the satellite orbit raising segment provided by an embodiment of the present invention, the ground station is located on the right side of the satellite, and antenna 1 is used;

[0042] Figure 3 This is the satellite orbit-descending segment provided by an embodiment of the present invention, the ground station is located on the right side of the satellite, and antenna 1 is used;

[0043] Figure 4 This is the satellite orbit raising segment provided by an embodiment of the present invention, the ground station is located on the left side of the satellite, and antenna 2 is used;

[0044] Figure 5 This is the satellite orbit-descending segment provided by an embodiment of the present invention, the ground station is located on the left side of the satellite, and antenna 2 is used;

[0045] Figure 6 Schematic diagram of a satellite coordinate system provided by an embodiment of the present invention; wherein (a) is a schematic diagram of a VVLH coordinate system from the perspective of the earth, and (b) is a schematic diagram of a VVLH coordinate system from the perspective of a satellite;

[0046] Figure 7 It is a schematic diagram of a sub-window that can be optimized provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0048] It should be noted that the following detailed descriptions are all illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0050] In view of the existing satellite data transmission mission planning mentioned in the background technology, which mostly considers the single antenna situation, and does not need to consider the allocation of the onboard antenna to the ground station, but for the data transmission mission planning of the spot beam dual antenna satellite, how to plan the allocation of the satellite spot beam dual antenna and the ground station during transmission and how to plan the dual-station relay transmission of mission data, the present invention proposes a data transmission mission planning method for the spot beam dual antenna satellite, firstly, obtaining a single-station data transmission window and screening it according to constraints; calculating the spot beam antenna used for each data transmission window through the satellite spot beam dual antenna data transmission allocation algorithm; then based on the dual-station relay transmission planning algorithm, the single-station data transmission windows that have been matched with the spot beam antenna are combined into a composite data transmission window, and the matching between the satellite's spot beam dual antenna and the dual stations is planned, and finally a data transmission mission planning file is generated according to a set format.

[0051] Embodiment 1

[0052] like Figure 1 As shown, this embodiment provides a data transmission mission planning method for a spot beam dual-antenna satellite, comprising the following steps:

[0053] Step 1: According to the satellite orbit parameters, ground station configuration information, and the start and end time of data transmission planning, obtain the data transmission window set of the satellite passing through the ground station, and eliminate the data transmission windows that do not meet the conditions;

[0054] In this embodiment, based on the satellite's orbital parameter information, the longitude and latitude coordinates of each ground station in the ground station set, the minimum receiving elevation angle of the onboard antenna, the antenna number and other configuration information, and the start and end time of the satellite data transmission mission planning, a data transmission window set of the satellite passing through the ground station is obtained. The windows in the data transmission window set include information such as the start time, end time, data transmission duration, and receiving antenna number.

[0055] In this embodiment, the acquired data transmission windows are screened according to the usage constraints of the satellite and the ground station, and the data transmission windows that do not meet the conditions are removed from the set, wherein the constraints include that the ground station is available to the satellite, that is, the ground station supports the data downlink service of the satellite; the antenna of the ground station for receiving data is in an available state and is available to the satellite; when a ground station has multiple antennas available to the satellite, the satellite only needs to select one antenna for use; the data transmission duration of a single data transmission window meets the single shortest transmission time, etc.

[0056] Step 2: Calculate the satellite data transmission spot beam antenna used in each data transmission window through the satellite spot beam dual antenna data transmission allocation algorithm;

[0057] The satellite's two spot beam antennas, antenna 1 and antenna 2, are completely independent of the left and right sides of the satellite. Both antenna 1 and antenna 2 can establish a stable communication link with the ground station according to the satellite's instructions and complete the tasks of preparing, capturing, tracking and releasing data for downlink.

[0058] Regardless of whether the entire satellite is tilted or not, the principles for using the spot beam dual antenna are as follows:

[0059] (1) When the ground station is located on the right side of the satellite's flight direction, use antenna 1. That is, for the satellite orbit raising phase, the ground station is located on the east side of the satellite's downline, such as Figure 2 As shown; for the satellite orbit descending stage, the ground station is located on the west side of the satellite line, such as Figure 3 As shown;

[0060] (2) When the ground station is located on the left side of the satellite's flight direction, use antenna 2. That is, for the satellite orbit raising phase, the ground station is located on the west side of the satellite's downline, such as Figure 4 As shown; for the satellite orbit descending stage, the ground station is located on the east side of the satellite line, such as Figure 5 As shown;

[0061] Based on the principle of using satellite spot beam dual antennas, it is necessary to further determine the orientation of the ground station relative to the satellite, and match the satellite's spot beam antenna according to whether the ground station is located on the left or right side of the satellite's flight direction.

[0062] Get the start time of a single data transmission window, calculate the satellite orbit at the start time of a single data transmission window, and establish a coordinate system related to the satellite body according to the satellite orbit and attitude information. In this embodiment, the VVLH (VehicleVelocity Local Horizontal Coordinate System) coordinate system is used. Figure 6 As shown in the example, Figure 6 (a) shows the schematic diagram of the VVLH coordinate system from the perspective of the earth. Figure 6 (b) shows the schematic diagram of the VVLH coordinate system from the perspective of the satellite;

[0063] The VVLH coordinate system takes the satellite's mass point as its origin. The satellite is along the flight direction and perpendicular to the Y-axis. The Z-axis is the positive direction of the X-axis. The negative normal of the satellite's orbital plane is the positive direction of the Y-axis, and the direction pointing to the center of the earth is the positive direction of the Z-axis.

[0064] Get the longitude, latitude, and altitude of the ground station, place the longitude, latitude, and altitude in the WGS84 coordinate system, and generate a three-dimensional vector of the ground station in the WGS84 coordinate system , the three-dimensional vector coordinates of the ground station in the WGS84 coordinate system Projected to the VVLH coordinate system, the three-dimensional vector coordinates of the ground station in the satellite VVLH coordinate system are generated , vector coordinates It can represent the relative position of the ground station and the satellite. Since the Y axis of the VVLH coordinate system is defined by the normal vector of the satellite orbital plane, that is, the three-dimensional vector coordinates of the ground station projected onto the satellite VVLH coordinate system middle It can indicate the left-right azimuth relationship between the ground station and the satellite.

[0065] Considering further that the positive direction of the Y axis is defined by the negative normal of the satellite orbital plane, when >0, the ground station is located on the right side of the satellite's flight direction, and the satellite uses antenna 1 to communicate with the ground station; When <0, the ground station is located on the left side of the satellite's flight direction, and the satellite uses antenna 2 to communicate with the ground station.

[0066] In this embodiment, the three-dimensional vector coordinates of the ground station in the WGS84 coordinate system are projected into the satellite VVLH coordinate system to generate the three-dimensional vector coordinates of the ground station in the satellite VVLH coordinate system. , which represents the relative position of the ground station and the satellite. Since the positive direction of the Y axis of the VVLH coordinate system is defined by the negative normal of the satellite orbital plane, it can be The value determines whether the ground station is on the left or right side of the satellite.

[0067] Step 3: Based on the dual-station relay transmission planning algorithm, the single-station data transmission windows that have matched the spot beam antennas are combined into a composite data transmission window, and the matching between the satellite's spot beam dual antennas and the dual stations is completed.

[0068] Satellite dual-station relay mission data transmission means that the satellite first establishes a communication connection with the first ground station, and then establishes a communication connection with the second ground station within a certain time interval, so as to achieve "seamless" communication transmission with the two ground stations and increase data transmission efficiency. When planning the dual-station relay of the spot beam dual antenna to the ground station, it is necessary to consider how to optimize the combination of two single-station data transmission windows into a dual-station relay transmission window, i.e., a composite data transmission window, as well as the matching problem between the satellite's spot beam dual antenna and the dual stations.

[0069] The data transmission composite window in the dual-station relay is composed of two single-station data transmission windows. The single-station data transmission windows that meet the conditions and have matched the spot beam antenna are obtained, and the single-station data transmission window set is generated by sorting the windows from small to large according to their start time. ,set up represents the i-th single-station transmission window, Represents the jth composite window, processing each single-station data transmission window in sequence.

[0070] (1) If the composite window The end time is greater than The start time of the window and the composite window The end time is less than The end time of the window, description Windows can be added to composite windows To extend the data transmission time, the Window joins composite window In, as A data transmission sub-window and updates the composite window end time, data transmission duration and other parameters, while taking into account The addition of windows may exist Window Union The time window formed by a single station window can cover another part of the single station window, that is, some single station windows are The addition of windows can be optimized, and the optimization window can be changed from Eliminate, such as Figure 7 shown.

[0071] (2) If the composite window The end time is greater than The start and end time of the window, indicating the composite window Already covered single-station data transmission window, it continues to process the next single-station data transmission window.

[0072] (3) If the composite window The end time is less than The start time of the window indicates that the sub-windows cannot be relayed. Window cannot be added to a composite window In the composite window Complete the dual-station combination, add it to the composite window list, and create a new composite window Waiting for single-station data transmission window combination.

[0073] In dual-station transmission, the allocation of the two spot beam antennas gives priority to the first ground station position. When the first ground station is located on the right side of the satellite's flight direction, the first ground station uses antenna 1, and no matter which side of the satellite the second ground station is located on, it uses antenna 2. When the satellite is transmitting data with the first ground station, the satellite's other data transmission antenna will complete the side swing and prepare for data transmission with the second ground station.

[0074] Similarly, when the first ground station is located on the left side of the satellite's flight direction, the first ground station uses antenna 2 of the satellite, and the second ground station uses antenna 1 regardless of which side of the satellite it is located on.

[0075] Based on the above usage principles, a composite window list is obtained, and each composite window is processed in sequence. If the first sub-window in the composite window uses antenna 1, further, it is determined whether the antenna of the second sub-window uses antenna 2. If not, antenna 2 is allocated to the second sub-window. Conversely, if the first sub-window in the composite window uses antenna 2, further, it is determined whether the antenna of the second sub-window uses antenna 1. If not, antenna 1 is allocated to the second sub-window.

[0076] The present invention combines two single-station data transmission windows into a dual-station relay transmission window, namely a composite data transmission window, and solves the matching problem between the satellite's spot beam dual antennas and the dual stations.

[0077] Step 4: Generate a data transmission task planning file in the agreed format.

[0078] In this embodiment, the composite data transmission windows are sorted from small to large according to the window start time, and a data transmission task planning file is generated according to an agreed format.

[0079] In summary, the present invention solves the problem in the prior art that "data transmission task planning" mostly considers a single antenna, and there is no need to consider the allocation of satellite-borne antennas to ground stations; for the data transmission task planning of spot-beam dual-antenna satellites, a complete data transmission task planning method is provided, which solves the problem of allocation of satellite spot-beam dual antennas and ground stations during transmission and how to plan dual-station relay transmission.

[0080] Embodiment 2

[0081] This embodiment provides a data transmission mission planning system for a spot beam dual-antenna satellite, including:

[0082] A single-station data transmission window acquisition module is used to obtain a set of data transmission windows of a satellite passing through a ground station according to satellite orbit parameters, ground station configuration information, and the start and end time of data transmission planning;

[0083] Satellite spot beam dual antenna allocation module, which is used to determine the position of the ground station relative to the satellite based on the principle of using satellite spot beam dual antennas, and match the satellite data transmission spot beam antenna used in each data transmission window according to the left and right azimuth relationship of the ground station in the satellite flight direction;

[0084] The dual-station relay transmission planning module is used to combine the single-station data transmission windows that have matched the spot beam antennas into a composite data transmission window when planning the dual-station relay mission data transmission of the spot beam dual antennas to the ground station, complete the matching between the satellite's spot beam dual antennas and the dual stations according to the composite data transmission window, and generate a data transmission mission planning file in an agreed format.

[0085] The present invention solves the problem in the prior art that "data transmission task planning" mostly considers a single antenna, and there is no need to consider the allocation of satellite-borne antennas to ground stations; for the data transmission task planning of spot-beam dual-antenna satellites, a complete data transmission task planning system is provided, which solves the allocation problem of satellite spot-beam dual antennas and ground stations during transmission and how to plan dual-station relay transmission.

[0086] Embodiment 3

[0087] This embodiment provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps in the data transmission mission planning method for a spot beam dual-antenna satellite as described above are implemented.

[0088] Embodiment 4

[0089] This embodiment provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the steps in the data transmission mission planning method for a spot beam dual-antenna satellite as described above are implemented.

[0090] Embodiment 5

[0091] This embodiment provides a program product, which is a computer program product, including a computer program, characterized in that when the computer program is executed by a processor, the steps in the data transmission mission planning method for a spot beam dual-antenna satellite as described above are implemented.

[0092] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A data transmission mission planning method for a spot beam dual-antenna satellite, characterized in that: The steps include: According to satellite orbit parameters, ground station configuration information, and the start and end time of data transmission planning, obtain the data transmission window set of the satellite passing through the ground station; Based on the principle of using satellite spot beam dual antennas, determine the position of the ground station relative to the satellite, and match the satellite data transmission spot beam antenna used in each data transmission window according to the left and right azimuth relationship of the ground station in the satellite's flight direction; When planning the dual-station relay mission data transmission of the spot beam dual antenna to the ground station, the single-station data transmission windows that have been matched with the spot beam antenna are combined into a composite data transmission window, and the satellite's spot beam dual antenna and dual stations are matched according to the composite data transmission window, and a data transmission mission planning file is generated according to the agreed format; The step of combining the single-station data transmission windows that have matched the spot beam antenna into a composite data transmission window includes: When the composite window The end time is greater than The start time of the composite window The end time is less than the single-station transmission window The end time of the single-station transmission window Add composite window In, as A data transmission sub-window and updates the composite window Parameters; If the composite window The end time of each station is greater than the single-station transmission window The start time and end time of the data transmission window are determined, and the next single-station data transmission window is processed; If the composite window The end time is less than the single-station transmission window The start time of Window cannot be added to a composite window In the composite window Complete the dual-station combination, add it to the composite window list, and create a new composite window Waiting for single-station data transmission window combination; in, represents the i-th single-station transmission window, represents the jth composite window; The matching between the satellite's spot beam dual antennas and dual stations is completed according to the composite data transmission window, including: If the first sub-window in the composite data transmission window uses antenna 1, further determine whether the antenna of the second sub-window uses antenna 2. If not, antenna 2 is allocated to the second sub-window. Conversely, if the first sub-window in the composite data transmission window uses antenna 2, further determine whether the antenna of the second sub-window uses antenna 1. If not, antenna 1 is allocated to the second sub-window.

2. The data transmission mission planning method for a spot beam dual-antenna satellite according to claim 1, characterized in that: The satellite spot beam dual antenna usage principles include: When the ground station is located on the right side of the satellite's flight direction, use antenna 1, that is, for the satellite's orbit-raising phase, the ground station is located on the east side of the satellite's lowering line; for the satellite's orbit-descending phase, the ground station is located on the west side of the satellite's lowering line; When the ground station is located on the left side of the satellite's flight direction, antenna 2 is used, that is, for the satellite's orbit ascending segment, the ground station is located on the west side of the satellite's lowering line; for the satellite's orbit descending segment, the ground station is located on the east side of the satellite's lowering line.

3. The data transmission mission planning method for a spot beam dual-antenna satellite according to claim 1, characterized in that: The process of determining the position of the ground station relative to the satellite includes: Get the start time of a single data transmission window, calculate the satellite orbit at the start time of a single data transmission window, and establish a VVLH coordinate system related to the satellite body based on the satellite orbit and attitude information; Get the longitude, latitude and altitude of the ground station, place the longitude, latitude and altitude in the WGS84 coordinate system, and generate the three-dimensional vector coordinates of the ground station in the WGS84 coordinate system ; The three-dimensional vector coordinates of the ground station in the WGS84 coordinate system Projected to the VVLH coordinate system, the three-dimensional vector coordinates of the ground station in the satellite VVLH coordinate system are generated , vector coordinates Indicates the relative position of the ground station and the satellite; The Y axis of the VVLH coordinate system is defined by the normal vector of the satellite orbital plane, that is, the three-dimensional vector coordinate projected from the ground station to the satellite VVLH coordinate system. middle, It can represent the left-right azimuth relationship between the ground station and the satellite. Since the positive direction of the Y axis is defined by the negative normal of the satellite orbit plane, when >0, the ground station is located on the right side of the satellite's flight direction, and the satellite uses antenna 1 to communicate with the ground station; <0, the ground station is located on the left side of the satellite's flight direction, and the satellite uses antenna 2 to communicate with the ground station.

4. The data transmission mission planning method for a spot beam dual-antenna satellite according to claim 1, characterized in that: After obtaining a set of data transmission windows of the satellite passing through the ground station, the obtained data transmission windows are screened according to the usage constraints of the satellite and the ground station, and the data transmission windows that do not meet the conditions are removed from the set.

5. The data transmission mission planning method for a spot beam dual-antenna satellite as claimed in claim 4, characterized in that: The usage constraints of satellites and ground stations include: the ground station is available to the satellite, that is, the ground station supports the data downlink service of the satellite; the antenna of the ground station to receive data is in an available state and available to the satellite; when a ground station has multiple antennas available to the satellite, the satellite only needs to select one antenna to use; the data transmission duration of a single data transmission window meets the single minimum transmission time.

6. The data transmission mission planning method for a spot beam dual-antenna satellite according to claim 1, characterized in that: The ground station configuration information includes the latitude and longitude coordinates of each ground station in the ground station set, the minimum receiving elevation angle of the antenna, and the antenna number; the window in the data transmission window set includes the start time, end time, data transmission duration, and receiving antenna number.

7. A data transmission mission planning system for a spot beam dual antenna satellite, characterized in that: include: A single-station data transmission window acquisition module is used to obtain a set of data transmission windows of a satellite passing through a ground station according to satellite orbit parameters, ground station configuration information, and the start and end time of data transmission planning; Satellite spot beam dual antenna allocation module, which is used to determine the position of the ground station relative to the satellite based on the principle of using satellite spot beam dual antennas, and match the satellite data transmission spot beam antenna used in each data transmission window according to the left and right azimuth relationship of the ground station in the satellite flight direction; A dual-station relay transmission planning module is used to combine the single-station data transmission windows that have matched the spot beam antennas into a composite data transmission window when planning the dual-station relay task data transmission of the spot beam dual antennas to the ground station, complete the matching between the satellite's spot beam dual antennas and the dual stations according to the composite data transmission window, and generate a data transmission task planning file in an agreed format; The step of combining the single-station data transmission windows that have matched the spot beam antenna into a composite data transmission window includes: When the composite window The end time is greater than The start time of the composite window The end time is less than the single-station transmission window The end time of the single-station transmission window Add composite window In, as A data transmission sub-window and updates the composite window Parameters; If the composite window The end time of each station is greater than the single-station transmission window The start time and end time of the data transmission window are determined, and the next single-station data transmission window is processed; If the composite window The end time is less than the single-station transmission window The start time of Window cannot be added to a composite window In the composite window Complete the dual-station combination, add it to the composite window list, and create a new composite window Waiting for single-station data transmission window combination; in, represents the i-th single-station transmission window, represents the jth composite window; The matching between the satellite's spot beam dual antennas and dual stations is completed according to the composite data transmission window, including: If the first sub-window in the composite data transmission window uses antenna 1, further determine whether the antenna of the second sub-window uses antenna 2. If not, antenna 2 is allocated to the second sub-window. Conversely, if the first sub-window in the composite data transmission window uses antenna 2, further determine whether the antenna of the second sub-window uses antenna 1. If not, antenna 1 is allocated to the second sub-window.

8. A program product, the program product being a computer program product, comprising a computer program, characterized in that: When the computer program is executed by a processor, the steps in a data transmission mission planning method for a spot beam dual-antenna satellite as described in any one of claims 1 to 6 are implemented.

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