Satellite communication ground antenna device and communication control method

Abstract

The application relates to the technical field of satellite communication, in particular to a satellite communication ground antenna device and a communication control method. The application realizes the spatial separation of transmitting and receiving antennas by installing transmitting array antennas above an antenna assembly support and installing receiving array antennas below an antenna mainboard; the transmitting array antennas comprise multiple transmitting array antennas, the transmitting surfaces of the multiple transmitting array antennas are not parallel to each other, and the transmitting surfaces are arranged according to preset angles, so that the transmitting direction is facilitated to be controlled; the antenna assembly upper cover and the antenna assembly lower cover are sealingly matched, so that the antenna is prevented from being directly exposed to the external environment, the service life of the antenna array system is prolonged, and the interference of the environment on the signal is reduced; signal collection is carried out through a signal reflecting surface, so that the interference of rainy and snowy weather on the received signal is further reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of satellite communication, and in particular to a satellite communication ground antenna device and a communication control method. BACKGROUND

[0002] With the rapid development of information technology, satellite communication plays an increasingly important role in global communication networks. In particular, non-geostationary orbit satellites have been widely used in satellite Internet and communication fields due to their advantages of short transmission delay and flexible deployment. However, due to the continuous movement of non-geostationary orbit satellites relative to the ground, higher technical requirements are placed on ground antenna equipment.

[0003] The current satellite communication ground antenna mainly adopts phased array antenna technology, which forms an array by multiple antenna units and uses phase control to achieve active pointing of the signal beam. This antenna system usually integrates the transmitting antenna and the receiving antenna in a stacked manner in the same direction, and tracks the satellite by combining mechanical and electronic scanning.

[0004] However, the antenna system with a stacked structure has the transmitting antenna and the receiving antenna sharing the same direction, which is prone to signal quality degradation during satellite movement, and in adverse weather conditions, the receiving antenna is easily affected by rain and snow, leading to signal attenuation. This situation needs to be further improved. SUMMARY

[0005] In order to solve the problems of signal quality degradation and signal attenuation caused by the direct impact of rain and snow on the receiving antenna in the existing antenna system, the present application provides a satellite communication ground antenna device and a communication control method, which adopts the following technical solutions:

[0006] In a first aspect, the present application provides a satellite communication ground antenna device, comprising:

[0007] An antenna transceiver assembly, comprising an antenna assembly upper cover, a transmitting array antenna group, an antenna assembly support, an antenna mainboard, a receiving array antenna and an antenna assembly lower cover arranged in order from top to bottom, wherein the transmitting faces of each transmitting array antenna in the transmitting array antenna group are not parallel to each other;

[0008] An antenna assembly support rod is arranged below the antenna transceiver assembly, and the upper end of the antenna assembly support rod is connected to the antenna assembly lower cover;

[0009] A signal reflecting surface is arranged below the antenna assembly support rod, and is used to reflect satellite signals to the receiving array antenna;

[0010] An angle adjustment assembly is connected to the upper end of the signal reflecting surface, and the upper end of the angle adjustment assembly is fixedly connected to the antenna assembly support rod;

[0011] a base connected with a lower end of the angle adjustment assembly, the angle adjustment assembly being used to adjust an angle of the antenna transceiver assembly relative to the base.

[0012] As an optimization of a satellite communication ground antenna, the antenna mainboard comprises:

[0013] a master control chip, a power amplification chip connected with the master control chip, a plurality of array antenna control chips, a storage, and a sensor assembly connected with the master control chip, the sensor assembly comprising a satellite positioning chip, an air pressure sensor, a gyroscope and a geomagnetic sensor, the plurality of array antenna control chips being respectively electrically connected with corresponding sending array antennas, and the power amplification chip being electrically connected with the receiving array antenna.

[0014] As an optimization of a satellite communication ground antenna, the plurality of sending array antennas comprise a first sending array antenna, a second sending array antenna, a third sending array antenna, a fourth sending array antenna and a fifth sending array antenna attached to the antenna assembly support, the fifth sending array antenna being arranged in parallel with the antenna assembly support, and the first sending array antenna, the second sending array antenna, the third sending array antenna and the fourth sending array antenna being arranged in a ring array and arranged at a preset angle with the antenna assembly support.

[0015] As an optimization of a satellite communication ground antenna, the receiving array antenna adopts an inverted design and collects signals through the signal reflecting surface.

[0016] In a second aspect, the application provides a satellite communication control method applied to the satellite communication ground antenna device, comprising the following steps:

[0017] obtaining position data, orientation data and inclination data of the antenna device;

[0018] determining an antenna coordinate of the antenna device in the Earth-Centered Earth-Fixed coordinate system according to the position data, confirming a pointing angle of the antenna device relative to a geographical direction according to the orientation data, and confirming a vertical deviation angle of the antenna device relative to the ground according to the inclination data;

[0019] calculating a straight-line distance between each communication satellite and the antenna coordinate according to the antenna coordinate and pre-stored satellite constellation data, and determining a communication satellite with the smallest straight-line distance as a target communication satellite;

[0020] calculating an elevation angle and a rotation angle based on the antenna coordinate, the position of the target communication satellite and the origin of the Earth-Centered Earth-Fixed coordinate system;

[0021] According to the pointing angle and the vertical deviation angle, the elevation angle and the rotation angle are compensated and calibrated, and the optimal pointing transmitting array antenna is selected according to the calibrated elevation angle and rotation angle for signal transmission.

[0022] As an optimization of the satellite communication control method, the transmitting array antenna group includes a first transmitting array antenna, a second transmitting array antenna, a third transmitting array antenna, a fourth transmitting array antenna and a fifth transmitting array antenna, and the optimal pointing transmitting array antenna is selected according to the calibrated elevation angle and rotation angle for signal transmission, and specifically includes the following steps:

[0023] When the calibrated elevation angle is less than the preset deviation angle, the fifth transmitting array antenna is selected for signal transmission;

[0024] When the calibrated elevation angle is greater than the preset deviation angle, the optimal pointing transmitting array antenna is selected based on the calibrated rotation angle, specifically:

[0025] The calibrated rotation angle is compared with the axial angles of the first transmitting array antenna, the second transmitting array antenna, the third transmitting array antenna and the fourth transmitting array antenna respectively;

[0026] The included angle between the axial straight line of each transmitting array antenna and the connecting line of the target communication satellite is calculated, and the transmitting array antenna with the smallest included angle is selected as the optimal pointing transmitting array antenna;

[0027] The projection point of the target communication satellite on the plane of the optimal pointing transmitting array antenna is calculated, the projection rotation angle of the projection point relative to the coordinate reference axis is determined, and the projection rotation angle and the included angle are transmitted to the corresponding array antenna control chip for beam forming.

[0028] As an optimization of the satellite communication control method, before the position data, orientation data and inclination data of the antenna device are obtained, the method further includes the following steps:

[0029] The angle of the base and the angle adjusting assembly is adjusted so that the antenna assembly support rod points to the intersection point of the satellite constellation track, and the adjustable direction of the angle adjusting assembly is parallel to the installation reference direction.

[0030] As an optimization of the satellite communication control method, the preset deviation angle is 11.25°, and the first transmitting array antenna, the second transmitting array antenna, the third transmitting array antenna and the fourth transmitting array antenna respectively point to the northeast, the southeast, the southwest and the northwest of the axial direction of the antenna transceiver assembly.

[0031] Compared with the prior art, the application has the following beneficial effects:

[0032] 1. The application realizes the spatial separation of the transmitting and receiving antennas by installing the transmitting array antenna above the antenna assembly support and the receiving array antenna below the antenna mainboard; the transmitting array antenna group includes multiple transmitting array antennas, the transmitting surfaces of each transmitting array antenna are not parallel to each other, and are arranged at a preset angle to facilitate the control of the transmitting direction; the antenna is sealed by the sealing cooperation of the antenna assembly upper cover and the antenna assembly lower cover, thereby avoiding the direct exposure of the antenna to the external environment, prolonging the service life of the antenna array system, and reducing the interference of the environment on the signal; the signal collection is performed through the signal reflecting surface, thereby further reducing the interference of the rainy and snowy weather on the received signal;

[0033] 2. The application first acquires the position, orientation and inclination data of the antenna device through the sensor, establishes the accurate positioning of the antenna device in the earth-centered earth-fixed coordinate system; then, based on the pre-stored satellite constellation data, the straight-line distance between each communication satellite and the antenna is calculated to quickly lock the nearest target communication satellite; then, the spherical geometry principle is used to calculate the theoretical elevation angle and rotation angle according to the antenna coordinates, the target satellite position and the coordinate system origin; finally, considering the influence of the actual installation error, the pointing angle and the vertical deviation angle of the antenna are taken as compensation parameters to calibrate the theoretical angle, and the optimal pointing transmitting array antenna is selected accordingly; not only solves the problem that the traditional method can not adapt to the actual installation error by relying only on the preset orbit parameters, but also improves the accuracy of the antenna pointing, and at the same time, the nearest satellite priority and optimal antenna selection strategy are adopted to ensure the reliability of the signal transmission;

[0034] 3. The application first determines whether to use the fifth transmitting array antenna specially designed or the other four transmitting array antennas according to the comparison result of the calibrated elevation angle and the preset deviation angle; when the other four transmitting array antennas need to be used, the included angle between each antenna and the connecting line of the target satellite is calculated by comparing the rotation angle with the axial angle of each antenna, so as to select the antenna with the optimal pointing; then, the projection point of the satellite on the selected antenna plane is further calculated to determine the projection rotation angle relative to the coordinate reference axis, and finally the accurate beam forming is realized through the array antenna control chip; ensures the optimal path of signal transmission, and further improves the communication quality through beam forming. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0036] Figure 1 is a structural schematic diagram of the satellite communication ground antenna device in the embodiment of the application;

[0037] Figure 2 Fig. 1 is a structural schematic diagram of a transmitting array antenna group according to an embodiment of the present application;

[0038] Figure 3 Fig. 2 is a connection schematic diagram of an antenna mainboard according to an embodiment of the present application;

[0039] Figure 4 Fig. 3 is a flow schematic diagram of a satellite communication control method according to an embodiment of the present application;

[0040] Figure 5 Fig. 4 is a flow schematic diagram of step S450 in the satellite communication control method according to an embodiment of the present application.

[0041] In the figure: 1, antenna transceiver assembly; 11, antenna assembly upper cover; 12, transmitting array antenna group; 121, first transmitting array antenna; 122, second transmitting array antenna; 123, third transmitting array antenna; 124, fourth transmitting array antenna; 125, fifth transmitting array antenna; 13, antenna assembly support; 14, antenna mainboard; 141, main control chip; 142, power amplification chip; 143, array antenna control chip; 144, storage; 145, satellite positioning chip; 146, barometric sensor; 147, gyroscope; 148, geomagnetic sensor; 149, antenna-terminal transceiver interface; 15, receiving array antenna; 16, antenna assembly lower cover; 2, antenna assembly support rod; 3, signal reflecting surface; 4, angle adjustment assembly; 5, base. DETAILED DESCRIPTION

[0042] In order to make the technical solutions and advantages of the present application clearer, the following will combine specific embodiments and the drawings of the specification to make further detailed description of the present application and its beneficial effects, but the embodiments of the present application are not limited thereto.

[0043] In the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" should be understood broadly, for example, can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0044] The standard parts used in the present application can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings, and the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, and the mechanical parts and equipment adopt the conventional types in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here.

[0045] The application will be further described below in conjunction with the accompanying drawings. Figures 1-5 The application will be further described below in conjunction with the accompanying drawings.

[0046] In a first aspect, referring to Figure 1 The application provides a satellite communication ground antenna device, which comprises, from top to bottom, an antenna transceiver assembly 1, an antenna assembly support rod 2, a signal reflecting surface 3, an angle adjusting assembly 4 and a base 5. The antenna transceiver assembly 1 is fixedly connected with the antenna assembly support rod 2 through a through hole in the lower cover thereof, and a data line of the antenna assembly support rod 2 extends to an outlet hole of the angle adjusting assembly 4. The signal reflecting surface 3 is fixed to an upper mounting hole of the angle adjusting assembly 4 by bolts, and a rotating shaft of the angle adjusting assembly 4 is connected with a rotating through hole of the base 5 by bolts, for adjusting the overall direction of the antenna.

[0047] As shown in Figure 1 and Figure 2 The antenna transceiver assembly 1 adopts a layered structure design, comprising, from top to bottom, an antenna assembly upper cover 11, a transmitting array antenna group 12, an antenna assembly support 13, an antenna main board 14, a receiving array antenna 15 (i.e. a sixth array antenna) and an antenna assembly lower cover 16. The antenna assembly upper cover 11 is fixed with the antenna assembly support 13 by bolts. The transmitting array antenna group 12 comprises a first transmitting array antenna 121, a second transmitting array antenna 122, a third transmitting array antenna 123, a fourth transmitting array antenna 124 and a fifth transmitting array antenna 125, which are all fixedly attached to the antenna assembly support 13, wherein the fifth transmitting array antenna 125 is arranged in parallel with the antenna assembly support 13, and the first transmitting array antenna 121 to the fourth transmitting array antenna 124 are arranged in a ring array and are arranged at a preset angle with the antenna assembly support 13. The antenna main board 14 is fixed to the antenna assembly support 13 by studs, and each transmitting array antenna is electrically connected with the antenna main board 14 by a wire harness. The receiving array antenna 15 adopts an inverted design, is fixed to the studs of the antenna main board 14 by bolts, and is connected with the antenna main board 14 by a wire harness. The antenna main board 14 is connected with a ground satellite terminal by a data line. It can be understood that the number of transmitting antennas can be adjusted based on actual application conditions.

[0048] As shown in Figure 3As shown, a plurality of functional chips and sensors are integrated on the antenna mainboard 14. Specifically, they include a main control chip 141, a power amplification chip 142 connected with the main control chip 141 (connected with the receiving array antenna 15), five array antenna control chips 143 (corresponding to control five sending array antennas respectively), a storage 144, and a sensor assembly. The sensor assembly includes a satellite positioning chip 145, an air pressure sensor 146, a gyroscope 147, and a geomagnetic sensor 148, all of which are electrically connected with the main control chip 141. Each sending array antenna is connected with a corresponding array antenna control chip 143 through a coaxial line, and these control chips are connected with the main control chip 141 at the same time. The power amplification chip 142 is connected with the main control chip 141 through a coaxial line. The main control chip 141 is also connected with an antenna-terminal transceiver interface 149 for data interaction with a ground satellite terminal.

[0049] The experimental principle of the embodiment of the application is as follows: the application separates the sending and receiving antennas, and collects signals through the signal reflecting surface 3, thereby effectively improving the anti-interference capability of the system. The different orientation design of the plurality of sending array antennas ensures that there is always a suitable antenna surface for signal transmission during the movement of the satellite. Meanwhile, the integrated multiple sensors can obtain the position and attitude information of the antenna in real time, thereby providing guarantee for beam control.

[0050] In a second aspect, the application provides a satellite communication control method applied to the satellite communication ground antenna device described above, with reference to Figure 4 , including the following steps:

[0051] S410, obtaining position data, orientation data, and inclination data of the antenna device.

[0052] Before step S410, initial installation adjustment is performed, the antenna assembly support rod is pointed to the intersection point of the satellite constellation track in the region by rotating the base and the angle adjustment assembly, and it is ensured that the adjustable direction of the angle adjustment assembly is parallel to the geographic south direction. Such initial adjustment can ensure that the antenna device is in the optimal working position, thereby providing a basis for subsequent communication.

[0053] In this embodiment, the system obtains the position and attitude information of the antenna device in all directions. The main control chip obtains the latitude and longitude coordinates through the satellite positioning chip, and in combination with the altitude data obtained by the air pressure sensor, the position data of the antenna device in the geocentric coordinate system (antenna coordinates CPa) can be determined. Meanwhile, the orientation data is obtained through the geomagnetic sensor, and the inclination data is obtained through the gyroscope, so as to determine the spatial attitude of the antenna.

[0054] S420, determine the antenna coordinates of the antenna device in the earth-centered earth-fixed coordinate system according to the position data, confirm the pointing angle of the antenna device relative to the geographical direction according to the orientation data, and confirm the vertical deviation angle of the antenna device relative to the ground according to the inclination data.

[0055] S430, calculate the straight-line distance between each communication satellite and the antenna coordinates according to the antenna coordinates and the pre-stored satellite constellation data, and determine the communication satellite with the minimum straight-line distance as the target communication satellite.

[0056] In this embodiment, the system reads the pre-stored satellite constellation data from the storage, which contains the spatial position information of the satellites in the earth-centered earth-fixed coordinate system and the motion law thereof.

[0057] In this embodiment, the master control chip first traverses each satellite Sn in the pre-stored satellite constellation data, calculates the spatial position (satellite coordinates CPn) of the satellite at the current time, then calculates the straight-line distance Ln from the antenna coordinates CPa to each satellite coordinates CPn, and stores the satellite number Ns and the corresponding distance Ln in the matrix An. By analyzing the data in the matrix An, the satellite with the minimum Ln value is selected as the target communication satellite, and its number Nss and position coordinates CPs are obtained.

[0058] Further, the antenna support of the present application arranges the antenna array at an angle of 45° with the meridian and the parallel, and the array in each of the four directions is at a horizontal inclination angle of 22.5° with the central array, so that when the interval between the constellation design satellite and the ground is less than 45°, at any time, there is an antenna array optimally pointing to the satellite orbit. When the interval between the constellation design satellite and the ground is less than 67.5°, the antenna device of the present application can point the transmitting beam to the communication antenna through beam forming.

[0059] S440, calculate the elevation angle and the rotation angle based on the antenna coordinates, the position of the target communication satellite, and the origin of the earth-centered earth-fixed coordinate system.

[0060] In this embodiment, the system calculates the rotation angle ∠Roas and the elevation angle ∠Eoas with the earth's north polar axis as the 0 point based on the triangle formed by the origin CPo of the earth-centered earth-fixed coordinate system, the antenna coordinates CPa, and the communication satellite coordinates CPs.

[0061] S450, compensate and calibrate the elevation angle and the rotation angle according to the pointing angle and the vertical deviation angle, and select the transmitting array antenna with the optimal pointing direction for signal transmission according to the calibrated elevation angle and rotation angle.

[0062] In this embodiment, the system obtains the orientation data of the antenna device relative to the geographic north pole through the geomagnetic sensor, and obtains the inclination data of the antenna device relative to the horizontal plane through the gyroscope. The orientation data is used to determine the actual pointing direction of the antenna in the horizontal plane, for example, when the orientation data shows that the device deviates 45 degrees from the north, the system needs to compensate for this deviation when calculating the rotation angle. The inclination data is used to correct the non-horizontal state of the antenna during installation or use, for example, when the inclination data shows that the device is tilted forward by 3 degrees, the system needs to subtract this tilt from the calculated elevation angle. The system uses these two attitude data as compensation parameters to correct the theoretically calculated elevation angle and rotation angle, ensuring the accuracy of the beam pointing.

[0063] Specifically, in step S450, when the calibrated elevation angle is less than the preset deviation angle, the fifth transmitting array antenna is selected for signal transmission; when the calibrated elevation angle is greater than the preset deviation angle, the transmitting array antenna with the optimal pointing direction is selected based on the calibrated rotation angle, referring to Figure 5 , specifically:

[0064] S451, compare the calibrated rotation angle with the axial angle of the first transmitting array antenna, the second transmitting array antenna, the third transmitting array antenna and the fourth transmitting array antenna respectively.

[0065] S452, calculate the included angle between the axial straight line of each transmitting array antenna and the connecting line of the target communication satellite, and select the transmitting array antenna with the smallest included angle as the transmitting array antenna with the optimal pointing direction.

[0066] S453, calculate the projection point of the target communication satellite on the plane of the transmitting array antenna with the optimal pointing direction, determine the projection rotation angle of the projection point relative to the coordinate reference axis, and transfer the projection rotation angle and the included angle to the corresponding array antenna control chip for beam forming.

[0067] In this embodiment, the preset deviation angle is 11.25°, the first, second, third and fourth transmitting array antennas are respectively directed to the northeast, southeast, southwest and northwest of the axial direction of the antenna transceiver assembly. When | ∠Eoas | is less than 11.25°, the system selects the fifth transmitting array antenna (central array antenna) to transmit signals. At this time, the main control chip transmits the calculated elevation angle (| ∠Eoas |), rotation angle ( ∠Roas ) and data signal T to the array antenna control chip corresponding to the fifth transmitting array antenna, and generates a transmission signal after beamforming processing by the control chip, and transmits the signal to the fifth transmitting array antenna through a coaxial line for transmission. When | ∠Eoas | is greater than or equal to 11.25°, the system selects the transmitting array antenna with the optimal pointing direction according to the rotation angle ∠Roas. The specific process is to compare ∠Roas with the axial angle of the four array antennas, calculate the included angle between the axial line of each antenna and the connecting line of the target satellite, and select the antenna with the smallest included angle as the transmitting antenna. Then, the position of the satellite projection point on the plane of the selected antenna is calculated, the projection rotation angle of the projection point relative to the coordinate reference axis is determined, and the corresponding elevation angle, rotation angle and data signal are transmitted to the corresponding control chip, and the signal is transmitted after beamforming processing by the control chip. It can be understood that the preset deviation angle can be other preferred angles.

[0068] Then, the power amplification chip receives the signal from the receiving array antenna (sixth array antenna) through the coaxial line, and processes the received signal into a data signal. The signal is transmitted to the antenna mainboard through the data line, and the mainboard further processes the data signal into a data signal RX, and finally transmits the data to the ground satellite terminal through the antenna-terminal transceiver interface. Such a signal processing procedure ensures the accuracy and reliability of the received signal.

[0069] Further, when the target communication satellite is determined, the system not only selects one transmitting antenna with the optimal pointing direction, but also calculates the suboptimal pointing effect of other transmitting antennas on the target communication. When the first transmitting array antenna is used to communicate with the target communication satellite, if the included angle between the pointing direction of the second transmitting array antenna and the satellite is close to the optimal value, the system will simultaneously prepare these two antenna arrays. When the pointing effect of the first transmitting array antenna decreases due to the movement of the satellite, the second transmitting array antenna is smoothly switched.

[0070] When calculating the straight-line distance between each communication satellite and the antenna coordinates, the system also calculates the relative distance change rate of each communication satellite and the antenna device. After selecting the communication satellite with the minimum straight-line distance as the target communication satellite, if its relative distance change rate is positive and greater than a preset threshold (for example, 200 meters / second), the system will select the communication satellite with the second closest relative distance and a negative distance change rate from the matrix An as the backup satellite. The system calculates the elevation angle and rotation angle of the backup satellite in advance and determines the optimally directed transmitting array antenna. When the elevation angle of the backup satellite is less than 11.25°, the fifth transmitting array antenna is prepared in advance; when the elevation angle of the backup satellite is greater than or equal to 11.25°, the optimally directed antenna among the first to fourth transmitting array antennas is determined in advance, and the corresponding projection point position and projection rotation angle are calculated. This makes it possible to complete the parameter calculation and antenna preparation of the backup satellite in advance while maintaining communication with the nearest satellite, laying the foundation for subsequent satellite switching and ensuring the smooth transition and stable operation of the communication system.

[0071] Specifically, the system establishes an antenna-satellite switching state table in the storage for managing antenna combination states and satellite switching preparation states. The state table includes a current communication state, an antenna backup state, and a satellite backup state. The system updates the parameters in the state table in real time, and when it is detected that the pointing angle of the currently used transmitting array antenna will soon exceed the optimal range, the antenna backup state is queried first and the antenna is switched; when the antenna switching cannot meet the communication requirements, the satellite backup state is queried and the satellite is switched.

[0072] Based on the disclosure and teachings of the above specification, those skilled in the art can also make changes and modifications to the above embodiments. Therefore, the present application is not limited to the above specific embodiments, and any obvious improvements, replacements or modifications made by those skilled in the art based on the present application shall fall within the scope of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of explanation and do not constitute any limitation on the present application.

Claims

1. A satellite communication ground antenna apparatus, characterized by, The application relates to a satellite communication ground antenna device. The antenna transceiving assembly (1) comprises, from top to bottom, an antenna assembly upper cover (11), a transmitting array antenna group (12), an antenna assembly support (13), an antenna mainboard (14), a receiving array antenna (15) and an antenna assembly lower cover (16), wherein the transmitting faces of the transmitting array antennas in the transmitting array antenna group (12) are not parallel to each other. The antenna assembly support rod (2) is arranged below the antenna transceiving assembly (1), and the upper end of the antenna assembly support rod (2) is connected to the antenna assembly lower cover (16). The signal reflecting surface (3) is arranged below the antenna assembly support rod (2) and is used for reflecting satellite signals to the receiving array antenna (15). The angle adjusting assembly (4) is connected to the upper end of the signal reflecting surface (3), and the upper end of the angle adjusting assembly (4) is fixedly connected to the antenna assembly support rod (2). The base (5) is connected to the lower end of the angle adjusting assembly (4), and the angle adjusting assembly (4) is used for adjusting the angle of the antenna transceiving assembly (1) relative to the base (5). The transmitting array antenna group (12) comprises a first transmitting array antenna (121), a second transmitting array antenna (122), a third transmitting array antenna (123), a fourth transmitting array antenna (124) and a fifth transmitting array antenna (125) which are attached to the antenna assembly support (13), the fifth transmitting array antenna (125) is arranged in parallel with the antenna assembly support (13), the first transmitting array antenna (121), the second transmitting array antenna (122), the third transmitting array antenna (123) and the fourth transmitting array antenna (124) are arranged in a ring array and are arranged at a preset angle relative to the antenna assembly support (13); and the receiving array antenna (15) adopts an inverted design and collects signals through the signal reflecting surface (3).

2. The satellite communication ground antenna apparatus according to claim 1, characterized by The antenna mainboard (14) comprises a main control chip (141), a power amplification chip (142) connected to the main control chip (141), a plurality of array antenna control chips (143), a storage (144) and a sensor assembly connected to the main control chip (141), the sensor assembly comprises a satellite positioning chip (145), an air pressure sensor (146), a gyroscope (147) and a geomagnetic sensor (148), the plurality of array antenna control chips (143) are electrically connected to corresponding transmitting array antennas respectively, and the power amplification chip (142) is electrically connected to the receiving array antenna (15). The application is applied to the satellite communication ground antenna device as claimed in any one of claims 1 or 2, and comprises the following steps:

3. A satellite communication control method characterized by, Obtaining position data, orientation data and inclination data of the antenna device; Determining the antenna coordinates of the antenna device in the earth-fixed coordinate system according to the position data, confirming the pointing angle of the antenna device relative to the geographical direction according to the orientation data and confirming the vertical deviation angle of the antenna device relative to the ground according to the inclination data; ​ According to the antenna coordinates and pre-stored satellite constellation data, a straight-line distance between each communication satellite and the antenna coordinates is calculated, and a communication satellite with the minimum straight-line distance is determined as a target communication satellite; Based on the antenna coordinates, the position of the target communication satellite, and the origin of the Earth-Centered Earth-Fixed coordinate system, an elevation angle and a rotation angle are calculated; According to the pointing angle and the vertical deviation angle, the elevation angle and the rotation angle are compensated and calibrated, and an optimal pointing sending array antenna is selected for signal transmission according to the calibrated elevation angle and rotation angle.

4. The satellite communication control method according to claim 3, characterized by, The sending array antenna group includes a first sending array antenna, a second sending array antenna, a third sending array antenna, a fourth sending array antenna, and a fifth sending array antenna. An optimal pointing sending array antenna is selected for signal transmission according to the calibrated elevation angle and rotation angle, specifically including the following steps: When the calibrated elevation angle is less than a preset deviation angle, the fifth sending array antenna is selected for signal transmission; When the calibrated elevation angle is greater than the preset deviation angle, an optimal pointing sending array antenna is selected based on the calibrated rotation angle, specifically as follows: The calibrated rotation angle is compared with the axial angles of the first sending array antenna, the second sending array antenna, the third sending array antenna, and the fourth sending array antenna, respectively; An included angle between the axial line of each sending array antenna and the line connecting the target communication satellite is calculated, and a sending array antenna with the smallest included angle is selected as the optimal pointing sending array antenna; A projection point of the target communication satellite on the plane of the optimal pointing sending array antenna is calculated, a projection rotation angle of the projection point relative to the coordinate reference axis is determined, and the projection rotation angle and the included angle are transmitted to the corresponding array antenna control chip for beam forming.

5. The satellite communication control method according to claim 3, characterized by, Before acquiring the position data, orientation data, and inclination data of the antenna device, the method further includes the following steps: Adjust the angle of the base and the angle adjustment assembly so that the antenna assembly support rod points to the intersection point of the satellite constellation track, and the adjustable direction of the angle adjustment assembly is parallel to the installation reference direction.

6. The satellite communication control method according to claim 4, characterized by, The preset deviation angle is 11.25°, and the first sending array antenna, the second sending array antenna, the third sending array antenna, and the fourth sending array antenna point to the northeast, southeast, southwest, and northwest of the axial direction of the antenna transceiver assembly, respectively.

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