CN112909551B - Wave beam control system of communication-in-moving phased array antenna - Google Patents
Wave beam control system of communication-in-moving phased array antenna Download PDFInfo
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- CN112909551B CN112909551B CN202110205329.1A CN202110205329A CN112909551B CN 112909551 B CN112909551 B CN 112909551B CN 202110205329 A CN202110205329 A CN 202110205329A CN 112909551 B CN112909551 B CN 112909551B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/28—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the amplitude
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
- H01Q3/36—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with variable phase-shifters
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Abstract
The invention discloses a wave beam control system of a mobile communication phased array antenna, which comprises an FPGA control module and a DSP control module, wherein the FPGA control module is connected with the DSP control module; the FPGA control module receives the position information, the attitude information and the ephemeris data and sends the ephemeris data, the position information and the attitude information to the DSP control module; the DSP control module performs resolving according to the ephemeris data, the position information and the attitude information and sends a resolving result to the FPGA control module; and the FPGA control module performs wave beam calculation according to the calculation result to obtain a phase shift control code and an amplitude control code pointed by the target wave beam of each antenna unit of the receiving assembly array and each antenna unit of the transmitting assembly array, and sends the phase shift control codes and the amplitude control codes to the receiving assembly array and the transmitting assembly array. The system can achieve the purpose of fast beam scanning, and is easier to realize the real-time tracking of the high-speed moving antenna carrier in the satellite communication in motion.
Description
Technical Field
The invention relates to the field of antennas, in particular to a beam control system of a mobile communication phased array antenna.
Background
In the field of satellite communication, a satellite communication system is a communication system that uses an artificial earth satellite as a relay station to transmit or emit radio waves, thereby realizing communication between two or more earth stations or between an earth station and a spacecraft.
The communication in motion is short for "moving satellite ground station communication system". The attitude and the geographic position of platforms such as vehicles, ships, airplanes and the like are continuously changed in the moving process, so that the beams of the antenna are deviated and rolled, signals are easily weakened or lost, and a communication-in-motion antenna is required to be adopted. Through the communication-in-motion system, mobile carriers such as vehicles, ships, airplanes and the like can track platforms such as satellites and the like in real time in the motion process, and multimedia information such as voice, data, images and the like can be uninterruptedly transmitted, so that the requirements of various military and civil emergency communication and multimedia communication under the mobile condition are met.
In the traditional communication-in-motion parabolic antenna and the traditional flat antenna, a control system is servo control, the servo control is influenced by devices such as an electronic compass and a gyroscope, the scanning precision and the response sensitivity are limited, and the flexible and maneuvering beam switching is difficult to maintain to achieve the real-time tracking of the high-speed motion antenna carrier.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the existing antenna control system adopts servo control, has limited response sensitivity, is difficult to maintain flexible and maneuvering switching of beams and achieves the purpose of tracking the high-speed moving antenna carrier in real time. In order to solve the above problems, the present invention provides a beam control system for a mobile communication phased array antenna.
The invention is realized by the following technical scheme:
a wave beam control system of a phase array antenna for communication in motion comprises an FPGA control module and a DSP control module; the FPGA control module is connected with the DSP control module;
the FPGA control module is used for receiving earth position information (longitude and latitude) of a phased array antenna carrier, attitude information (yaw angle, pitch angle and roll angle) of the phased array antenna carrier and ephemeris data from a baseband unit, and sending the ephemeris data, the earth position information and the attitude information to the DSP control module;
the DSP control module carries out beam pointing angle calculation according to the ephemeris data, the earth position information and the attitude information to obtain beam pointing azimuth angle information and beam pointing pitch angle information, and sends the beam pointing azimuth angle information and the beam pointing pitch angle information to the FPGA control module;
the FPGA control module is used for carrying out beam calculation on the beam pointing azimuth angle information and the beam pointing pitch angle information according to a beam control instruction from the baseband unit to obtain a phase shift control code and an amplitude control code pointed by a target beam of each antenna unit in the receiving component array, and sending the phase shift control code and the amplitude control code pointed by the target beam of each antenna unit in the receiving component array to the receiving component array; and also obtaining phase shift control codes and amplitude control codes pointed by the target wave beams of each antenna unit of the transmitting component array, and sending the phase shift control codes and the amplitude control codes pointed by the target wave beams of each antenna unit in the transmitting component array to the transmitting component array.
According to the control system of the communication-in-motion phased array antenna, servo control is not needed, a control system framework of FPGA + DSP is adopted, the FPGA is provided with abundant configurable logic modules and I/O modules, and the wave beam resolving and controlling functions of a transmitting assembly and a receiving assembly of a larger-scale phased array antenna array can be realized; the DSP has strong data processing capacity and high running speed, and can realize the rapid solution of ephemeris data of the communication satellite of the communication phased array antenna in motion. The FPGA control module forwards received ephemeris data, position information of the earth of the phased array antenna carrier and attitude information of the earth of the phased array antenna carrier to the DSP control module, the DSP control module carries out beam pointing angle calculation, beam pointing azimuth angle and pitch angle information obtained by the beam pointing angle calculation is returned to the FPGA control module, the FPGA control module receives a beam control command sent by a baseband unit and receives the beam pointing azimuth angle and pitch angle information returned by the DSP control module, phase shift control codes and amplitude control codes of target beam pointing of each antenna unit of the transmitting assembly array and the receiving assembly array are calculated through the beam calculation and are sent to each antenna unit of the transmitting assembly array and the receiving assembly array, synthesis of receiving and transmitting beams is achieved, pointing directions of the maximum antenna values can be changed through different phase shift control codes and amplitude control codes, and sending and receiving of satellite communication signals can be completed through control of the pointing directions of transmitting beams and receiving beams. The FPGA + DSP combined control system can improve the beam control real-time property, stability, rapidity, accuracy and reliability of the phased array antenna beam control system to the maximum extent, achieves the purpose of rapid beam scanning, and is easier to realize the real-time tracking of the high-speed moving antenna carrier in the satellite communication in motion.
The FPGA control module is used for receiving an AGC voltage value and a locking indication signal from a beacon receiver, obtaining the precision of a beam pointing angle and correcting the beam pointing angle; the FPGA control module is used for receiving the transmitting frequency information and the receiving frequency information from the baseband unit and sending the transmitting frequency information and the receiving frequency information to the channel module.
Preferably, the power supply device further comprises a primary power supply module, a secondary power supply module A, a secondary power supply module B and a secondary power supply module C, wherein the primary power supply module is used for realizing voltage conversion and sending the converted voltage to the secondary power supply module A, the secondary power supply module B and the secondary power supply module C; the secondary power supply module A is used for realizing voltage conversion and supplying power to each module of the control system; the secondary power supply module B is used for realizing voltage conversion and supplying power to an external transmitting assembly array; and the secondary power supply module C is used for realizing voltage conversion and supplying power to the external receiving component array.
The primary power supply module is connected with the secondary power supply module A, the secondary power supply module B and the secondary power supply module C through connectors; the primary power supply module is used for isolating and converting 24V of an external primary power supply into 12V and providing the 12V to the secondary power supply module A, the secondary power supply module B and the secondary power supply module C; the secondary power supply module A is connected with each module of the beam control system through PCB wiring; the secondary power supply module A receives 12V of power supplied by the primary power supply module, converts the power into 1V, 1.2V, 1.8V, 3.3V and 5V and supplies power to each module of the beam control system; the secondary power supply module B is connected with the phased array antenna transmitting component array by adopting a connector; the secondary power supply module B receives 12V of power supplied by the primary power supply module, converts the power into 1.8V and supplies power to the phased array antenna transmitting assembly array; the secondary power supply module C is connected with the phased array antenna receiving component array by adopting a connector; and the secondary power supply module C receives 12V of power supplied by the primary power supply module, converts the power into 1.8V and supplies power to the phased array antenna receiving component array.
The invention integrates two stages of power supply conversion modules, wherein a primary power supply module is used for converting 24V isolation of an external primary power supply into 12V to be supplied to a phased array beam control system, and the secondary power supply module A is used for converting the 12V into 1V, 1.2V, 1.8V, 3.3V and 5V power supply required by a beam control circuit, so that the electrical isolation of the power supply of the wave control system and the external power supply can be realized, and the stability of the power supply of the wave control system is ensured. Meanwhile, 12V is converted into 1.8V voltage required by the transmitting component array and the receiving component array through the secondary power supply module B and the secondary power supply module C respectively, and the transmitting component array and the receiving component array are directly supplied with power through the pin header connector, so that the voltage drop of a transmission line generated by low-voltage and high-current work of the transmitting component array and the receiving component array is reduced, and the reliability of the transmitting component array and the receiving component array is improved.
Preferably, the system also comprises a GNSS/INS integrated navigation module, a signal conditioning module, an ADC acquisition module and an interface module, wherein the GNSS/INS integrated navigation module, the signal conditioning module and the ADC acquisition module are respectively connected with the FPGA control module, and the GNSS/INS integrated navigation module is used for detecting the earth position information and the attitude information of the phased array antenna carrier and sending the earth position information and the attitude information to the FPGA control module; the signal conditioning module is used for filtering and isolating AGC voltage output by the beacon receiver, converting the AGC voltage by the ADC and then sending the converted AGC voltage to the FPGA control module; the ADC acquisition module is used for detecting the power supply voltage and current of the primary power supply module, converting a voltage and current analog signal output by the primary power supply module into a digital signal and transmitting the digital signal to the FPGA control module; the interface module includes: the system comprises a baseband communication interface, a beacon receiver communication interface, a channel communication interface, a fan control interface, a transmitting component array control interface and a receiving component array control interface; the baseband communication interface is connected with the FPGA control module and is used for realizing communication between the FPGA control module and the baseband unit; the beacon receiver communication interface is connected with the FPGA control module and is used for realizing communication between the FPGA control module and the beacon receiver; the channel communication interface is connected with the FPGA control module and is used for realizing communication between the FPGA control module and a channel; the fan control interface is connected with the FPGA control module and is used for realizing the on-off control and speed regulation control functions of the FPGA control module on the phased array antenna radiating fan set and solving the radiating problem of the phased array antenna; the transmitting component array control interface is connected with the FPGA control module and is used for realizing the functions of power-on control, phase shift and attenuation control of the transmitting component array by the FPGA control module; and the receiving component array control interface is connected with the FPGA control module and is used for realizing the functions of power-on control, phase shift and attenuation control of the receiving component array by the FPGA control module.
Preferably, the ADC acquisition module is connected with the FPGA control module by an SPI interface, and the connection mode is PCB wiring connection; the GNSS/INS module is connected with the FPGA control module through a UART interface in a connector connection mode.
Preferably, the baseband communication interface adopts an RS422 communication interface, and the connection mode is connector connection; the beacon receiver communication interface adopts a UART communication interface, and the connection mode is connector connection; the channel communication interface adopts an SPI interface, and the connection mode is connector connection; the fan control interface is connected by TTL level PWM signals in a connector connection mode; the transmitting assembly array control interface adopts an SPI communication interface, and the connecting mode is connector connection; the receiving assembly array control interface adopts an SPI communication interface, and the connection mode is connector connection.
Preferably, the system also comprises a clock module A, a clock module B, a memory module A and a memory module B, wherein the clock module A is connected with the FPGA control module and is used for generating a working clock of the FPGA control module; the clock module B is connected with the DSP control module and is used for generating a working clock of the DSP control module; the storage module A is connected with the FPGA control module and is used for storing wave control codes generated by FPGA configuration programs and wave beam resolving of the FPGA control module and array surface amplitude-phase data of the phased array antenna; and the memory module B is connected with the DSP control module and is used for caching azimuth angle and pitch angle data generated by resolving the beam pointing angle of the DSP control module.
Preferably, the clock module a and the memory module a are connected with the FPGA control module by parallel buses; the clock module B and the memory module B are connected with the DSP control module through parallel buses, and the connection modes are PCB wiring connection.
Preferably, the FPGA control module is connected with the DSP control module by adopting an EMIF interface, an SPI interface or a UART interface, and the connection mode is PCB wiring connection.
The invention has the following advantages and beneficial effects:
1. according to the wave beam control system of the communication-in-motion phased array antenna, the FPGA + DSP control system architecture is adopted, so that the real-time performance, stability, rapidity, accuracy and reliability of wave beam control of the phased array antenna wave beam control system can be improved to the maximum extent;
2. the wave beam control system of the phase array antenna capable of communicating in motion integrates the ADC acquisition module, the ADC acquisition module detects related modules, the power supply on-off control, low power consumption management and voltage and current remote measurement functions of the phase array antenna are realized, and the reliability and stability of a product are improved;
3. the wave beam control system of the communication-in-motion phased array antenna integrates the two-stage power supply conversion module, can realize the electrical isolation of the power supply of the wave control system and the external power supply, and ensures the stability of the power supply of the wave control system. Meanwhile, the voltage drop of a transmission line generated by low-voltage and large-current work of the transmitting assembly array and the receiving assembly array is reduced, and the reliability of the transmitting assembly array and the receiving assembly array is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a system block diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Examples
In the traditional communication-in-motion parabolic antenna and the traditional flat antenna, a control system is servo control, the servo control is influenced by devices such as an electronic compass and a gyroscope, the scanning precision and the response sensitivity are limited, and the flexible and maneuvering beam switching is difficult to maintain to achieve the real-time tracking of the high-speed motion antenna carrier. The embodiment provides a wave beam control system of a phase-shift phased-array antenna, which does not need servo control, but adopts a control system framework of FPGA + DSP to perform wave beam pointing angle calculation and wave beam calculation, calculates phase-shift control codes and amplitude control codes of target wave beam pointing directions of all units of a receiving component array and a transmitting component array, and transmits the phase-shift control codes and the amplitude control codes to the receiving component array and the transmitting component array, so that synthesis of a receiving wave beam and a transmitting wave beam directional diagram is realized, different phase-shift control codes and different amplitude control codes can change the pointing direction of the maximum value of an antenna directional diagram, and transmission and reception of satellite communication signals can be completed by controlling the pointing directions of the transmitting wave beam and the receiving wave beam. The FPGA + DSP combined control system can improve the beam control real-time property, stability, rapidity, accuracy and reliability of the phased array antenna beam control system to the maximum extent, achieves the purpose of rapid beam scanning, and is easier to realize the real-time tracking of the high-speed moving antenna carrier in the satellite communication in motion.
As shown in fig. 1, a mobile communication phased array antenna beam control system includes an FPGA control module, a DSP control module, a clock module a, a clock module B, a GNSS/INS module, a primary power module, a secondary power module a, a secondary power module B, a secondary power module C, a signal conditioning module, an ADC acquisition module, a memory module a, a memory module B, and an interface module;
the FPGA control module is used for receiving earth position information (longitude and latitude) of the phased array antenna carrier, attitude information (yaw angle, pitch angle and roll angle) of the phased array antenna carrier and ephemeris data from the baseband unit, and sending the ephemeris data, the earth position information and the attitude information to the DSP control module;
the DSP control module carries out beam pointing angle calculation according to the ephemeris data, the earth position information and the attitude information to obtain beam pointing azimuth angle information and beam pointing pitch angle information, and sends the beam pointing azimuth angle information and the beam pointing pitch angle information to the FPGA control module;
the FPGA control module is used for carrying out wave beam calculation on wave beam pointing azimuth angle information and wave beam pointing pitch angle information according to wave beam control instructions from the baseband unit to obtain phase shift control codes and amplitude control codes pointed by target wave beams of all antenna units in the receiving assembly array, and sending the phase shift control codes and the amplitude control codes pointed by the target wave beams of all antenna units in the receiving assembly array to the receiving assembly array; and obtaining phase shift control codes and amplitude control codes pointed by the target wave beams of all the antenna units of the transmitting component array, and sending the phase shift control codes and the amplitude control codes pointed by the target wave beams of all the antenna units in the transmitting component array to the transmitting component array.
The FPGA control module is used for receiving the AGC voltage value and a locking indication signal from the beacon receiver, obtaining the precision of the beam pointing angle and correcting the beam pointing angle; the FPGA control module is used for receiving the transmitting frequency information and the receiving frequency information from the baseband unit and sending the transmitting frequency information and the receiving frequency information to the channel module.
The primary power supply module is connected with the secondary power supply module A, the secondary power supply module B and the secondary power supply module C through connectors; the primary power supply module is used for isolating and converting 24V external primary power supply into 12V to be provided for the secondary power supply module A, the secondary power supply module B and the secondary power supply module C; the secondary power supply module A is connected with each module of the beam control system through PCB wiring; the secondary power supply module A receives 12V of power supplied by the primary power supply module, converts the power into 1V, 1.2V, 1.8V, 3.3V and 5V and supplies power to each module of the beam control system; the secondary power supply module B is connected with the phased array antenna transmitting assembly array by adopting a connector; the secondary power supply module B receives 12V of power supplied by the primary power supply module, converts the power into 1.8V and supplies power to the phased array antenna transmitting assembly array; the secondary power supply module C is connected with the phased array antenna receiving component array by adopting a connector; and the secondary power supply module C receives 12V of power supplied by the primary power supply module, converts the power into 1.8V and supplies power to the phased array antenna receiving assembly array.
The integrated two-stage power supply conversion module, the primary power supply module keeps apart external primary power supply 24V and converts 12V into and provides phased array beam control system for, converts 12V into the required power supply of 1V, 1.2V, 1.8V, 3.3V and 5V of beam control circuit through secondary power supply module A, can realize the electrical isolation of wave control system power supply and external power supply, has ensured the stability of wave control system power supply. Meanwhile, 12V is converted into 1.8V voltage required by the transmitting component array and the receiving component array through the secondary power supply module B and the secondary power supply module C respectively, and the transmitting component array and the receiving component array are directly supplied with power through the pin header connector, so that the voltage drop of a transmission line generated by low-voltage and high-current work of the transmitting component array and the receiving component array is reduced, and the reliability of the transmitting component array and the receiving component array is improved.
The GNSS/INS integrated navigation module, the signal conditioning module and the ADC acquisition module are respectively connected with the FPGA control module, and the GNSS/INS integrated navigation module is used for detecting the earth position information and the attitude information of the phased array antenna carrier and sending the earth position information and the attitude information to the FPGA control module; the signal conditioning module is used for filtering and isolating AGC voltage output by the beacon receiver, converting the AGC voltage by the ADC and then transmitting the converted AGC voltage to the FPGA control module; the ADC acquisition module is used for detecting the power supply voltage and current of the primary power supply module, converting the voltage and current analog signals output by the primary power supply module into digital signals and transmitting the digital signals to the FPGA control module; the interface module includes: the system comprises a baseband communication interface, a beacon receiver communication interface, a channel communication interface, a fan control interface, a transmitting component array control interface and a receiving component array control interface; the baseband communication interface is connected with the FPGA control module and is used for realizing the communication between the FPGA control module and the baseband unit; the beacon receiver communication interface is connected with the FPGA control module and is used for realizing communication between the FPGA control module and the beacon receiver; the channel communication interface is connected with the FPGA control module and is used for realizing communication between the FPGA control module and a channel; the fan control interface is connected with the FPGA control module and is used for realizing the on-off control and speed regulation control functions of the FPGA control module on the phased array antenna cooling fan set and solving the problem of the phased array antenna cooling; the transmitting component array control interface is connected with the FPGA control module and is used for realizing the functions of power-on control, phase shift and attenuation control of the transmitting component array by the FPGA control module; the receiving component array control interface is connected with the FPGA control module and is used for realizing the functions of power-on control, phase shift and attenuation control of the receiving component array by the FPGA control module.
The ADC acquisition module is connected with the FPGA control module by an SPI interface in a PCB wiring way; the GNSS/INS module is connected with the FPGA control module through a UART interface in a connector connection mode.
The baseband communication interface adopts an RS422 communication interface, and the connection mode is connector connection; the beacon receiver communication interface adopts a UART communication interface, and the connection mode is connector connection; the channel communication interface adopts an SPI interface, and the connection mode is connector connection; the fan control interface is connected by TTL level PWM signals in a connector connection mode; the transmitting assembly array control interface adopts an SPI communication interface, and the connecting mode is connector connection; the receiving assembly array control interface adopts an SPI communication interface, and the connection mode is connector connection.
The clock module A is connected with the FPGA control module and used for generating a working clock of the FPGA control module; the clock module B is connected with the DSP control module and is used for generating a working clock of the DSP control module; the storage module A is connected with the FPGA control module and is used for storing wave control codes generated by FPGA configuration programs and wave beam resolving of the FPGA control module and phased array antenna array surface amplitude-phase data; and the memory module B is connected with the DSP control module and is used for caching azimuth angle and pitch angle data generated by resolving the beam pointing angle of the DSP control module.
The clock module A, the memory module A and the FPGA control module are connected by adopting a parallel bus; the clock module B, the memory module B and the DSP control module are connected by parallel buses, and the connection modes are PCB wiring connection.
The FPGA control module is connected with the DSP control module by adopting an EMIF interface, an SPI interface or a UART interface, and the connection mode is PCB wiring connection.
Realizing beam resolving:
the control system comprises a control system FPGA control module, a base band communication interface module, a phase-array antenna carrier and a DSP control module, wherein the control system FPGA control module receives ephemeris data issued by the base band unit through the base band communication interface module, receives earth position information of the phase-array antenna carrier and attitude information of the phase-array antenna carrier provided by the GNSS/INS combined navigation module, forwards the received ephemeris data, the earth position information of the phase-array antenna carrier and the attitude information of the phase-array antenna carrier to the DSP control module, carries out wave beam pointing angle resolving through the DSP control module, and transmits wave beam pointing azimuth angle and pitch angle information obtained through the wave beam pointing angle resolving back to the FPGA control module; the FPGA control module receives a beam control instruction issued by the baseband unit and receives beam pointing azimuth angle and pitch angle information returned by the DSP control module, phase shift control codes and amplitude control codes pointing to target beams of each antenna unit of the receiving assembly array and the transmitting assembly array are calculated through beam calculation and are distributed to each receiving assembly array and each transmitting assembly array through the SPI, synthesis of receiving and transmitting beam patterns is achieved, pointing of the maximum value of the antenna pattern can be changed through different phase shift control codes and amplitude control codes, and sending and receiving of satellite communication signals can be completed through controlling the pointing of transmitting beams and receiving beams.
Realizing automatic star searching, tracking and star losing and re-capturing control:
the beacon receiver is used for receiving a beacon signal and a carrier signal of a target communication satellite, obtaining an AGC voltage value and a locking indication signal after demodulation, providing the locking indication signal for the FPGA control module by the beacon receiver, sending the AGC voltage value to the signal conditioning module by the beacon receiver, filtering and isolating the AGC voltage output by the beacon receiver by the signal conditioning module, and sending the AGC voltage to the FPGA control module after ADC conversion; the FPGA control module can judge the accuracy of beam pointing control and implement the correction of beam pointing angles based on the received AGC voltage value and the locking indication signal, and realizes the automatic satellite searching, tracking and satellite loss reacquisition control of the phased array antenna.
The channel module is used for realizing the frequency conversion function of the uplink radio frequency signal and the downlink radio frequency signal of the target satellite, converting the uplink radio frequency signal and the downlink radio frequency signal into an intermediate frequency signal, facilitating the processing and the collection of communication signals, and after receiving the transmitting and receiving frequency information sent by the baseband unit, the FPGA control module forwards the transmitting and receiving frequency information to the channel module through the SPI interface, and the channel module completes the frequency conversion processing of the uplink radio frequency signal and the downlink radio frequency signal.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A wave beam control system of a phase array antenna for communication in motion is characterized by comprising an FPGA control module and a DSP control module;
the FPGA control module is connected with the DSP control module;
the FPGA control module is used for receiving the terrestrial position information of the phased array antenna carrier, the attitude information of the phased array antenna carrier and ephemeris data from the baseband unit and sending the ephemeris data, the terrestrial position information and the attitude information to the DSP control module;
the DSP control module carries out beam pointing angle calculation according to the ephemeris data, the earth position information and the attitude information to obtain beam pointing azimuth angle information and beam pointing pitch angle information, and sends the beam pointing azimuth angle information and the beam pointing pitch angle information to the FPGA control module;
the FPGA control module is used for carrying out beam calculation on the beam pointing azimuth angle information and the beam pointing pitch angle information according to a beam control instruction from the baseband unit to obtain a phase shift control code and an amplitude control code pointed by a target beam of each antenna unit in the receiving component array, and sending the phase shift control code and the amplitude control code pointed by the target beam of each antenna unit in the receiving component array to the receiving component array; the phase shift control code and the amplitude control code pointed by the target wave beam of each antenna unit in the transmitting component array are also obtained, and the phase shift control code and the amplitude control code pointed by the target wave beam of each antenna unit in the transmitting component array are sent to the transmitting component array;
the system comprises a phase-locked loop (FPGA) control module, a phase-locked loop (GNSS/INS) integrated navigation module, a signal conditioning module, an analog-to-digital converter (ADC) acquisition module and an interface module, wherein the GNSS/INS integrated navigation module, the signal conditioning module and the ADC acquisition module are respectively connected with the FPGA control module, and the GNSS/INS integrated navigation module is used for detecting the earth position information and the attitude information of a phased-array antenna carrier and sending the earth position information and the attitude information to the FPGA control module; the signal conditioning module is used for filtering and isolating AGC voltage output by the beacon receiver, converting the AGC voltage by the ADC and then sending the AGC voltage to the FPGA control module; the ADC acquisition module is used for detecting the power supply voltage and current of the primary power supply module, converting the voltage and current analog signals output by the primary power supply module into digital signals and transmitting the digital signals to the FPGA control module; the interface module includes: the system comprises a baseband communication interface, a beacon receiver communication interface, a channel communication interface, a fan control interface, a transmitting component array control interface and a receiving component array control interface; the baseband communication interface is connected with the FPGA control module and is used for realizing communication between the FPGA control module and the baseband unit; the beacon receiver communication interface is connected with the FPGA control module and is used for realizing communication between the FPGA control module and the beacon receiver; the channel communication interface is connected with the FPGA control module and is used for realizing communication between the FPGA control module and a channel; the fan control interface is connected with the FPGA control module and is used for realizing the on-off control and speed regulation control functions of the FPGA control module on the phased array antenna radiating fan set and solving the radiating problem of the phased array antenna; the transmitting component array control interface is connected with the FPGA control module and is used for realizing the functions of power-on control, phase shift and attenuation control of the transmitting component array by the FPGA control module; and the receiving component array control interface is connected with the FPGA control module and is used for realizing the functions of power-on control, phase shift and attenuation control of the receiving component array by the FPGA control module.
2. The system of claim 1, further comprising a primary power module, a secondary power module A, a secondary power module B, and a secondary power module C, wherein the primary power module supplies power to the secondary power module A, the secondary power module B, and the secondary power module C by voltage conversion.
3. The system of claim 2, wherein the primary power module is connected to the secondary power module a, the secondary power module B, and the secondary power module C by connectors; the secondary power supply module A is connected with each module of the beam control system through PCB wiring; the secondary power supply module B is connected with the phased array antenna transmitting component array by adopting a connector; and the secondary power supply module C is connected with the phased array antenna receiving component array by adopting a connector.
4. The wave beam control system of the phased array antenna in motion communication according to claim 1, characterized in that the ADC acquisition module is connected with the FPGA control module by an SPI interface; and the GNSS/INS integrated navigation module is connected with the FPGA control module by adopting a UART interface.
5. The system of claim 1, wherein the baseband communication interface is an RS422 communication interface; the beacon receiver communication interface adopts a UART communication interface; the channel communication interface adopts an SPI interface; the fan control interface is connected by TTL level PWM signals; the transmitting component array control interface adopts an SPI communication interface; the receiving component array control interface adopts an SPI communication interface.
6. The wave beam control system of the phased array antenna in motion communication according to claim 1, further comprising a clock module A, a clock module B, a memory module A and a memory module B, wherein the clock module A is connected with the FPGA control module; the clock module B is connected with the DSP control module; the memory module A is connected with the FPGA control module; and the memory module B is connected with the DSP control module.
7. The system for controlling the wave beams of the phased array antenna in the middle of communication according to claim 6, wherein the clock module A and the memory module A are connected with the FPGA control module by parallel buses; the clock module B and the memory module B are connected with the DSP control module by adopting a parallel bus.
8. The system as claimed in claim 1, wherein the FPGA control module is connected to the DSP control module by an EMIF interface, an SPI interface, or a UART interface.
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| CN115296704A (en) * | 2021-12-29 | 2022-11-04 | 网络通信与安全紫金山实验室 | Distributed millimeter wave active phased array antenna control system and control method |
| CN114710192B (en) * | 2022-03-11 | 2023-11-17 | 中国科学院国家空间科学中心 | Satellite-borne space-sea relay communication system and method applied to low-orbit satellite |
| WO2024060132A1 (en) * | 2022-09-22 | 2024-03-28 | 北京京东方技术开发有限公司 | Tunable antenna control method and apparatus and tunable antenna system |
| CN117590095B (en) * | 2024-01-18 | 2024-04-19 | 成都华兴大地科技有限公司 | Method for rapidly testing directional diagram of phased array antenna based on FPGA software |
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