Antenna alignment device based on scattering communication phased array antenna

Abstract

The present invention provides an antenna alignment device based on a scattering communication phased array antenna, comprising: a signal transceiver unit, a communication signal transceiver unit, a transceiver information exchange unit, an antenna alignment time synchronization beam signal generator and a cancellation separation beam receiver; the cancellation separation beam receiver is used to cancel, separate and fit the antenna alignment receiving beam signal and the demodulation signal, and send the processed optimized antenna alignment receiving beam information to the antenna alignment time synchronization beam signal generator; the antenna alignment time synchronization beam signal generator is used to perform error extraction, weighting and framing processing on the optimized antenna alignment receiving beam information, and send the processed antenna alignment time synchronization beam signal to the transceiver information exchange unit. The antenna alignment device provided by the present invention can realize rapid antenna alignment without support, only knowing the approximate communication direction and without affecting the normal networking communication conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of scattering communication, and in particular to an antenna alignment device based on a scattering communication phased array antenna. Background Art

[0002] Tropospheric scatter communication is communication that uses tropospheric scatter channels. It has the advantages of stable and reliable channel resources, long-term existence, no payment required, and strong anti-interference, anti-interception, and anti-detection capabilities, and is widely used.

[0003] At present, antenna alignment methods in scattering communications require the use of auxiliary communication means such as Beidou or shortwave beyond-line-of-sight communications to assist the antenna in aligning the information channel, so that the antennas can transmit information such as the position and the received signal level to each other. When there is no auxiliary communication means and only the approximate communication direction is known, it is difficult to achieve antenna alignment, and the average alignment time is not less than 30 minutes. In point-to-multipoint networking communications, it will take a lot of time to complete the antenna alignment between the central node and multiple peripheral nodes, and it will require many operators to complete the alignment. Therefore, there is an urgent need for an antenna alignment device that can quickly align without support. Summary of the invention

[0004] The embodiment of the present invention provides an antenna alignment device based on a scattering communication phased array antenna to solve the problem that it is difficult to achieve antenna alignment when there is no auxiliary communication means and only a rough communication direction is known.

[0005] The embodiment of the present invention provides an antenna alignment device based on a scattering communication phased array antenna, comprising: a signal transceiver unit, a communication signal transceiver unit, a transceiver information exchange unit, an antenna alignment time synchronization beam signal generator, and an offset separation beam receiver;

[0006] A transceiver information exchange unit, used to send the communication receiving beam signal and the antenna alignment receiving beam signal sent by the signal transceiver unit to the communication signal transceiver unit and the offset separation receiving beam receiver respectively;

[0007] A communication signal transceiver unit is used to receive and process the communication receiving beam signal, send the obtained demodulated signal to the cancellation separation receiving beam receiver, and perform service distribution processing on the demodulated signal and output it;

[0008] The offset separation receiving beam receiver is used to offset, separate and fit the antenna alignment receiving beam signal and the demodulation signal, and send the processed optimized antenna alignment receiving beam information to the antenna alignment time synchronization transmitting beam signal generator;

[0009] The antenna alignment time synchronization beam signal generator is used to perform error extraction, weighting and framing processing on the optimized antenna alignment receiving beam information, and send the antenna alignment time synchronization beam signal obtained after processing to the transceiver information exchange unit;

[0010] The communication signal transceiver unit is also used to perform business coding and framing processing on the business information, and send the processed communication transmission beam signal to the transceiver information exchange unit;

[0011] The transceiver information exchange unit is also used to send the interactive communication transmission beam signal and the antenna alignment time synchronization transmission beam signal to the signal transceiver unit.

[0012] In a possible implementation, the signal transceiver unit includes an antenna array, a set of transmitting and receiving components, a transmitting and receiving local oscillator, a digital preprocessing and digital beamforming subunit, and a beam control subunit;

[0013] The antenna array plane is used to receive the radio frequency signals input by each antenna array element and send the radio frequency signals to the transmitting and receiving component set;

[0014] A collection of transmitting and receiving components, used to perform low-noise amplification and post-processing of the received radio frequency signal, mix and filter the processed signal with the receive local oscillator instruction sent by the transmit and receive local oscillator, and send the obtained multi-channel receive intermediate frequency signal to the digital preprocessing and digital beam forming subunit;

[0015] The beam control subunit is used to receive the communication reception beam control signal and the communication reception local oscillator control instruction sent by the communication signal transceiver unit, and send them to the digital preprocessing and digital beam forming subunit;

[0016] The digital preprocessing and digital beamforming subunit is used to perform digital sampling, preprocessing and digital beamforming processing on the multi-channel receiving intermediate frequency signals, and send the processed communication receiving beam signals and antenna alignment receiving beam signals to the transceiver information exchange unit;

[0017] The digital preprocessing and digital beamforming subunit is also used to perform digital beamforming processing on the antenna alignment time synchronization transmission beam signal and the communication transmission signal, send the processed multi-channel transmission intermediate frequency signal to the transmission and reception component set, and send the transmission local oscillator instruction from the beam control subunit to the transmission and reception local oscillator;

[0018] The transmitting and receiving component set is also used to mix and filter the received multi-channel transmitting intermediate frequency signals and the transmitting local oscillator instructions, and send the obtained multi-channel transmitting signals to the antenna array surface;

[0019] The antenna array surface is also used to transmit multi-path transmission signals through each antenna array element.

[0020] In a possible implementation, the offset separation receiving beam receiver is further used to send the generated antenna alignment receiving beam control signal to the beam control subunit based on the receiving beam control pulse signal sent by the communication signal transceiver unit;

[0021] The digital preprocessing and digital beamforming subunit is specifically used to send the communication receiving local oscillator control instruction to the transceiver local oscillator, digitally sample and preprocess the multi-channel receiving intermediate frequency signals, perform digital beamforming processing on the obtained multi-channel digital signals based on the antenna alignment receiving beam control signal and the communication receiving beam control signal, and send the processed communication receiving beam signal and antenna alignment receiving beam signal to the transceiver information exchange unit.

[0022] In one possible implementation, a beam-cancelling and separation receiving receiver is specifically used to perform communication signal cancellation, far and near beam signal separation, and surface coverage multi-beam signal fitting on the antenna alignment receiving beam signal and the demodulation signal, and sends the optimized antenna alignment receiving beam information obtained by fitting to the antenna alignment time synchronization beam signal generator.

[0023] In a possible implementation, the communication signal transceiver unit is further used to send a communication transceiver control signal to the antenna alignment time synchronization beam signal generator;

[0024] The antenna alignment time synchronization beam signal generator is specifically used to extract beam synchronization errors, weight beam eigenvalues, and frame beam signals for optimizing antenna alignment receiving beam information and communication transceiver control signals, and sends the processed communicative signals, antenna alignment transmitting beam control signals and local oscillator instructions, and antenna alignment time synchronization transmitting beam signals to the communication signal transceiver unit, beam control subunit, and transceiver information exchange unit, respectively.

[0025] In a possible implementation, the communication signal transceiver unit is specifically used to receive and process the communication receiving beam signal to obtain a demodulated signal, and send the demodulated signal and the receiving beam control pulse signal to the cancellation separation receiving beam receiver, and perform service distribution processing on the demodulated signal and output it;

[0026] The communication signal transceiver unit is also specifically used to send the communication transmission beam control signal and the local oscillation instruction to the beam control subunit.

[0027] In a possible implementation, the transceiver information exchange unit is further used to align the antenna with the time synchronization to send the beam signal to the digital preprocessing and digital beam forming subunit;

[0028] The digital preprocessing and digital beamforming subunit is also specifically used to perform digital beamforming, digital-to-analog conversion and up-conversion processing on the antenna alignment transmit beam signal and the communication transmit beam control signal to synchronize the antenna transmission beam signal and the communication transmit beam control signal, and send the processed multi-channel transmit intermediate frequency signal to the transmit and receive component collection.

[0029] In one possible implementation, the beam control subunit controls and manages the receive beam and transmit beam in the digital preprocessing and digital beamforming subunit based on the communication receive beam control instructions, the communication transmit beam control instructions, the receive local oscillator instructions, the transmit local oscillator instructions, the antenna alignment receive beam control instructions, and the antenna alignment transmit beam control instructions.

[0030] In a possible implementation, the offset separation receiving beam receiver includes: an adaptive communication signal canceller, a communication signal reconstructor, a digital down-conversion and low-pass filter, a multi-channel matching filter, a near-far beam separator, an antenna alignment receiving beam controller, a multi-channel receiving beam signal combiner, a surface coverage antenna beam fitter and an antenna receiving beam optimization management;

[0031] A communication signal reconstructor, used for performing inverse modulation processing of coded modulation on the received communication demodulated signal, and sending the reconstructed communication signal obtained by the processing to the adaptive communication signal canceller;

[0032] An adaptive communication signal canceller is used to receive an antenna alignment receiving beam signal and reconstruct a communication signal, and to adaptively cancel the communication signal existing in the antenna alignment receiving beam signal, and to send the processed antenna alignment receiving beam purified signal to a digital down-conversion and low-pass filter; it is also used to receive the above-mentioned receiving beam control pulse signal, and to send the generated antenna alignment receiving beam time enable signal to the antenna alignment receiving beam controller;

[0033] An antenna alignment receiving beam controller is used to generate an antenna alignment receiving beam time pulse signal based on an antenna alignment receiving beam time enable signal and send it to a far-near beam separator and a multi-channel receiving beam combiner, and send the generated antenna alignment receiving beam control signal to a beam control subunit;

[0034] Digital down-conversion and low-pass filter, used to perform digital orthogonal down-conversion and digital low-pass filtering on the antenna alignment receiving beam purification signal, and send the processed antenna alignment receiving beam baseband signal to the multi-channel matching filter;

[0035] A multi-channel matching filter is used to perform multi-channel parallel matching processing on the antenna alignment receiving beam baseband signal, and to perform signal floor noise reduction processing on the obtained matching signals of multiple different beams, and to send the processed output antenna alignment receiving beam matching signal to the near-far beam separator;

[0036] A near-far beam separator is used to separate the near-far effect signal and the telestation antenna alignment signal generated by simultaneously receiving multiple antenna alignment signals from different distances in the same beam direction from the antenna alignment receiving beam matching signal and the antenna alignment receiving beam time pulse signal, and send the antenna alignment receiving beam separated near-far effect signal to the multi-channel receiving beam signal combiner;

[0037] A multi-channel receiving beam signal combiner is used to generate a diversity receiving pulse signal through an antenna alignment receiving beam time pulse signal, and to perform diversity combination on an antenna alignment receiving beam separation near-far effect signal based on the diversity receiving pulse signal timing, and to send the obtained antenna alignment receiving beam combination signal to a surface coverage antenna beam fitter;

[0038] The surface coverage antenna beam fitter is used to perform surface coverage antenna receiving beam fitting processing on the antenna alignment receiving beam combining signal, and send the processed antenna beam fitting diagram signal to the antenna receiving beam optimization management;

[0039] Antenna receiving beam optimization management is used to optimize the receiving beam from the antenna beam diagram and output the optimized antenna alignment receiving beam information.

[0040] In a possible implementation, the antenna alignment time synchronization beam transmission signal generator includes: a beam receiving characteristic value weighter, a communication transceiver pulse generator, a timing matching filter, an antenna alignment beam transmission command generator, a beam receiving synchronization error extractor, an antenna alignment beam transmission controller, a beam receiving synchronization signal generator and a beam transmission signal framer;

[0041] A receiving beam eigenvalue weighter is used to perform eigenvalue weighting and identification processing on the optimized antenna alignment receiving beam information, and send the obtained antenna alignment receiving beam identification signal to the antenna alignment transmitting beam command generator;

[0042] An antenna alignment beam transmission command generator is used to generate an antenna alignment beam transmission command signal according to an antenna alignment receiving beam identification signal, send the signal to an antenna alignment beam transmission controller and a beam transmission signal framer, and send a communicative beam signal to a communication signal transceiver unit;

[0043] A communication transceiver pulse generator is used to receive a communication transceiver control signal to generate an antenna alignment transmit beam control pulse signal and a receive beam control pulse signal, and send them to a receive beam synchronization error extractor and an antenna alignment transmit beam controller respectively;

[0044] An antenna alignment and beam transmission controller is used to send the generated antenna alignment and beam transmission control signal and the local oscillation transmission instruction to the beam control subunit based on the antenna alignment and beam transmission command signal and the antenna alignment and beam transmission control pulse signal;

[0045] A timing matching filter is used to match and filter the optimized antenna alignment receiving beam information, and send the obtained antenna alignment receiving beam pulse signal to the receiving beam synchronization error extractor;

[0046] A receiving beam synchronization error extractor is used to extract an antenna alignment receiving beam synchronization error signal by comparing the receiving beam control pulse signal and the antenna alignment receiving beam pulse signal, and send the antenna alignment receiving beam synchronization error signal to the receiving beam synchronization signal generator;

[0047] A receiving beam synchronization signal generator is used to encode, shape and modulate the antenna alignment receiving beam synchronization error signal, and send the processed receiving beam time synchronization signal to the transmitting beam signal framer;

[0048] The transmitting beam signal framer is used to map and shape the antenna alignment transmitting beam command signal, and to frame it with the receiving beam time synchronization signal, and to send the processed antenna alignment time synchronization transmitting beam signal to the transmitting and receiving information exchange unit.

[0049] The embodiment of the present invention provides an antenna alignment device based on a scattering communication phased array antenna, an antenna alignment multi-beam receiving method that adopts a cancellation separation receiving beam receiver for canceling, separating and fitting antenna alignment receiving beam signals and demodulation signals, and an antenna alignment time synchronization beam signal generator for error extraction, weighting and framing of optimized antenna alignment receiving beam information, thereby realizing rapid antenna alignment without support, only knowing the approximate communication direction and without affecting normal networking communication conditions, and the average alignment time is no more than 5 minutes. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0051] Figure 1 It is an electrical principle block diagram of an antenna alignment device based on a scattering communication phased array antenna provided by an embodiment of the present invention;

[0052] Figure 2 It is an electrical principle block diagram of a receiver for canceling and separating receiving beams provided by an embodiment of the present invention;

[0053] Figure 3 The invention is an electrical principle block diagram of an antenna alignment time synchronization beam signal generator provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0054] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0055] In order to make the purpose, technical solutions and advantages of the present invention more clear, specific embodiments will be described below in conjunction with the accompanying drawings.

[0056] As mentioned in the background technology, the existing scattered communication antenna alignment needs to use Beidou or shortwave and other beyond-line-of-sight communication means as auxiliary scattered antenna alignment information channels. When there is no auxiliary communication means and only the approximate communication direction is known, it is difficult to achieve antenna alignment, and the average alignment time is not less than 30 minutes; especially in scattered point-to-multipoint networking communication, it takes a lot of time and operators to complete the antenna alignment of the central node and multiple peripheral nodes. Therefore, there is an urgent need for an antenna alignment device that can quickly align without support.

[0057] In order to solve the problems in the prior art, an embodiment of the present invention provides an antenna alignment device based on a scattering communication phased array antenna. The antenna alignment device based on a scattering communication phased array antenna provided by an embodiment of the present invention is introduced below.

[0058] An antenna alignment device based on a scattering communication phased array antenna comprises: a signal transceiver unit, a communication signal transceiver unit, a transceiver information exchange unit, an antenna alignment time synchronous beam signal generator and an offset separation beam receiver.

[0059] Among them, the transceiver information exchange unit is used to send the communication receiving beam signal and the antenna alignment receiving beam signal sent by the signal transceiver unit to the communication signal transceiver unit and the offset separation receiving beam receiver respectively.

[0060] The communication signal transceiver unit is used to receive and process the communication receiving beam signal, send the obtained demodulated signal to the cancellation separation receiving beam receiver, and perform service distribution processing on the demodulated signal and output it.

[0061] The offset separation receiving beam receiver is used to offset, separate and fit the antenna alignment receiving beam signal and the demodulation signal, and send the processed optimized antenna alignment receiving beam information to the antenna alignment time synchronization transmitting beam signal generator.

[0062] The antenna alignment time synchronization beam signal generator is used to perform error extraction, weighting and framing processing on the optimized antenna alignment receiving beam information, and send the processed antenna alignment time synchronization beam signal to the transceiver information exchange unit.

[0063] The communication signal transceiver unit is also used to perform service encoding and framing processing on the service information, and send the processed communication transmission beam signal to the transceiver information exchange unit.

[0064] The transceiver information exchange unit is also used to send the interactive communication transmission beam signal and the antenna alignment time synchronization transmission beam signal to the signal transceiver unit.

[0065] Specifically, the signal transceiver unit includes an antenna array, a transmitting and receiving component set, a transmitting and receiving local oscillator, a digital preprocessing and digital beamforming subunit, and a beam control subunit.

[0066] The antenna array is used to receive the receiving and RF signals input by each antenna array element, and send the receiving and RF signals to the transmitting and receiving component set. The transmitting and receiving (T / R) component set is used to perform low-noise amplification and post-processing on the receiving and RF signals, mix and filter the processed signals with the receiving local oscillator instructions sent by the transmitting and receiving local oscillator, and send the obtained multi-channel receiving intermediate frequency signals to the digital preprocessing and digital beamforming subunit.

[0067] The beam control subunit is used to receive the communication receiving beam control signal and the receiving local oscillation instruction sent by the communication signal transceiver unit, and send them to the digital preprocessing and digital beam forming subunit.

[0068] The digital preprocessing and digital beamforming subunit is used to perform digital sampling, preprocessing and digital beamforming processing on the multi-channel receiving intermediate frequency signals, and send the processed communication receiving beam signals and antenna alignment receiving beam signals to the transceiver information exchange unit. The digital preprocessing and digital beamforming subunit is also used to perform digital beamforming processing on the antenna alignment time synchronization transmission beam signals and communication transmission signals, send the processed multi-channel transmission intermediate frequency signals to the transmission and reception component set, and send the transmission local oscillator instruction from the beam control subunit to the transmission and reception local oscillator.

[0069] The transmitting and receiving component set is also used to mix and filter the received multi-channel transmitting intermediate frequency signals and the transmitting local oscillator instructions, and send the obtained multi-channel transmitting signals to the antenna array surface. The antenna array surface is also used to transmit the multi-channel transmitting signals through each antenna array element.

[0070] Specifically, the cancellation separation receiving beam receiver is also used to send the generated antenna alignment receiving beam control signal to the beam control subunit based on the receiving beam control pulse signal sent by the communication signal transceiver unit. The digital preprocessing and digital beam forming subunit is specifically used to send the receiving local oscillator instruction to the transceiver local oscillator, digitally sample and preprocess the multi-channel receiving intermediate frequency signal, and digitally beamform the obtained multi-channel digital signal based on the antenna alignment receiving beam control signal and the communication receiving beam control signal, and send the processed communication receiving beam signal and antenna alignment receiving beam signal to the transceiver information exchange unit. The cancellation separation receiving beam receiver is specifically used to perform communication signal cancellation, far and near beam signal separation, and surface coverage multi-beam signal fitting on the antenna alignment receiving beam signal and the demodulated signal, and send the optimized antenna alignment receiving beam information obtained by fitting to the antenna alignment time synchronization beam signal generator.

[0071] In addition, the communication signal transceiver unit is also used to send a communication transceiver control signal to the antenna alignment time synchronization beam signal generator.

[0072] The antenna alignment time synchronization beam signal generator is specifically used to extract beam synchronization errors, weight beam eigenvalues, and frame beam signals for optimizing antenna alignment receiving beam information and communication transceiver control signals, and sends the processed communicative signals, antenna alignment transmitting beam control signals and local oscillator instructions, and antenna alignment time synchronization transmitting beam signals to the communication signal transceiver unit, beam control subunit, and transceiver information exchange unit, respectively.

[0073] The communication signal transceiver unit is specifically used to receive and process the communication receiving beam signal to obtain a demodulated signal, and send the demodulated signal and the receiving beam control pulse signal to the cancellation separation receiving beam receiver, and perform service distribution processing on the demodulated signal and output it. The communication signal transceiver unit is also specifically used to send the communication transmission beam control signal and the local oscillation instruction to the beam control subunit.

[0074] Specifically, the transceiver information exchange unit is also used to send the antenna alignment time synchronization transmission beam signal to the digital preprocessing and digital beam forming subunit. The digital preprocessing and digital beam forming subunit is also specifically used to perform digital beam forming, digital-to-analog conversion and up-conversion processing on the antenna alignment time synchronization transmission beam signal and the communication transmission signal based on the antenna alignment transmission beam control signal and the communication transmission beam control signal, and send the processed multi-channel transmission intermediate frequency signal to the transmission and receiving component set.

[0075] Among them, the beam control subunit is used to control and manage the receiving beam and transmitting beam in the digital preprocessing and digital beamforming subunit based on the communication receiving beam control instructions, the communication transmitting beam control instructions, the receiving local oscillator instructions, the transmitting local oscillator instructions, the antenna alignment receiving beam control instructions and the antenna alignment transmitting beam control instructions.

[0076] Below Figure 1 The antenna alignment device based on the scattering communication phased array antenna shown in the figure specifically describes its working process:

[0077] The antenna alignment device based on the scattering communication phased array antenna includes: an antenna array surface 1, a transmit / receive (T / R) component set 2, a transmit / receive local oscillator 3, a digital preprocessing and digital beam forming subunit 4, a beam control subunit 5, a communication signal transceiver unit 6, a transmit / receive information exchange unit 7, an antenna alignment time synchronization transmit beam signal generator 8, an offset separation receive beam receiver 9, a clock 10 and a power supply 11.

[0078] The digital preprocessing and digital beam forming (DBF) subunits are hereinafter referred to as digital preprocessing and DBF units, and the transmit / receive (T / R) component set is hereinafter referred to as the T / R component set.

[0079] Each antenna array element of the antenna array plane 1 independently receives the input receiving radio frequency signal, and sends the received independent receiving radio frequency signal to the T / R component set 2.

[0080] The T / R component assembly 2 performs low-noise amplification on each received RF signal, mixes each amplified RF signal with the receiving local oscillator instruction of the transceiver local oscillator 3, and filters out harmonics to obtain multiple received intermediate frequency signals, and outputs the multiple received intermediate frequency signals to the digital preprocessing and DBF unit 4.

[0081] The digital preprocessing and DBF unit 4 receives the scattered communication receiving beam control signal, the antenna alignment receiving beam control signal and the receiving local oscillator instruction from the beam control subunit 5, sends the communication receiving local oscillator control instruction to the transceiver local oscillator 3, and digitally samples and preprocesses the multi-channel receiving intermediate frequency signal output by the T / R component assembly 2 to obtain a multi-channel digital receiving signal, and then digitally beamforms the multi-channel digital receiving signal according to the requirements of the scattered communication receiving beam control signal and the antenna alignment receiving beam control signal to obtain the communication receiving signal and the antenna alignment receiving beam signal, and outputs them to the transceiver information exchange unit 7.

[0082] The transceiver information exchange unit 7 outputs the communication reception signal and the antenna alignment reception beam signal received from the digital preprocessing and DBF unit 4 to the communication signal transceiver unit 6 and the offset separation reception beam receiver 9 respectively.

[0083] The communication receiving beam control signal and receiving local oscillator instruction generated by the communication signal transceiver unit 6 are output to the beam control subunit 5, which generates a communication receiving and transmitting control signal and outputs it to the antenna alignment time synchronization beam signal generator 8, receives the communication receiving signal from the transceiver information exchange unit 7, receives and processes it to obtain a communication demodulation signal, and then outputs the communication demodulation signal and the receiving beam control pulse signal to the offset separation receiving beam receiver 9, and at the same time, the communication demodulation signal is processed for service distribution and output.

[0084] The offsetting and separating receiving beam receiver 9 receives the receiving beam control pulse signal from the communication signal transceiver unit 6 to generate antenna alignment receiving beam control information to the beam control subunit 5, receives the antenna alignment receiving beam signal from the transceiver information exchange unit 7 and the communication demodulation signal from the communication signal transceiver unit 6, performs communication signal offsetting, far and near beam signal separation and surface coverage multi-beam signal fitting to obtain the optimized antenna alignment receiving beam information, and outputs it to the antenna alignment time synchronization transmitting beam signal generator 8.

[0085] The antenna alignment time synchronization beam signal generator 8 receives the communication receiving and transmitting control signal from the communication signal transceiver unit 6 and the optimized antenna alignment receiving beam information from the offset separation receiving beam receiver 9, and performs beam synchronization error extraction, receiving beam eigenvalue weighting, beam signal framing and other processing to obtain the communicative beam signal, the antenna alignment receiving and transmitting beam control signal and the local oscillator transmission instruction and the antenna alignment time synchronization beam signal, and outputs them to the communication signal transceiver unit 6, the beam control subunit 5 and the receiving and transmitting information exchange unit 7 respectively.

[0086] The communication signal transceiver unit 6 sends the communication signal after encoding and framing the service information to the transceiver information exchange unit 7, and outputs the communication transmission beam control information and the local oscillation instruction to the beam control subunit 5.

[0087] The transceiver information exchange unit 7 receives the antenna alignment time synchronization beam signal from the antenna alignment time synchronization beam signal generator 8 and the communication signal from the communication signal transceiver unit 6, and outputs it to the digital preprocessing and DBF unit 4 after completing the information exchange.

[0088] The digital preprocessing and DBF unit 4 receives the antenna alignment time synchronization beam transmission signal and the communication transmission signal from the transceiver information exchange unit 7, and completes the digital beam forming of the antenna alignment time synchronization beam transmission signal and the communication transmission signal according to the beam transmission control signal from the beam control subunit 5, and then performs digital-to-analog conversion and up-conversion, outputs a multi-channel transmit intermediate frequency signal to the T / R component set 2, and at the same time outputs the transmit local oscillator instruction from the beam control subunit 5 to the transmit-receive local oscillator 3 for controlling the RF local oscillator of the beam transmission.

[0089] The T / R component set 2 mixes the multi-channel transmission intermediate frequency signals from the digital preprocessing and DBF unit 4 with the transmission local oscillator signals of the transceiver local oscillator 3, and filters out the harmonics to obtain multi-channel transmission radio frequency signals, and outputs the multi-channel transmission radio frequency signals to the antenna array surface 1. Each antenna array element of the antenna array surface 1 spatially radiates the input transmission radio frequency signals to complete the transmission of the scattered communication signal.

[0090] The beam control subunit 5 receives the communication receiving beam control information, the communication transmitting beam control information, the receiving local oscillator instruction and the transmitting local oscillator instruction from the communication signal transceiver unit 6, the antenna alignment transmitting beam control signal and the transmitting local oscillator instruction from the antenna alignment time synchronization transmitting beam signal generator 8, and the antenna alignment receiving beam control information from the cancellation separation receiving beam receiver 9, and performs centralized control and management of the receiving and transmitting beam forming of the digital preprocessing and DBF unit 4.

[0091] The transceiver local oscillator 3 is controlled by the transceiver local oscillator command from the digital preprocessing and DBF unit 4, and outputs the transceiver local oscillator command and the receive local oscillator command to the T / R component assembly 2.

[0092] Specifically, the clock 10 includes a phase detector, a loop filter, a VCXO and other parts, which provide a clock reference for the transceiver local oscillator 3, the digital preprocessing and DBF unit 4, the beam control subunit 5, the communication signal transceiver unit 6 and the transceiver information exchange unit 7, the antenna alignment time synchronization beam signal generator 8 and the offset separation beam receiver 9 in the device; the power supply 11 provides power for all other modules in the device.

[0093] Among them, the digital preprocessing and DBF unit 4, the beam control subunit 5, the communication signal transceiver unit 6 and the transceiver information exchange unit 7, the antenna alignment time synchronization beam signal generator 8 and the offset separation beam receiver 9 are composed of FPGA.

[0094] The antenna array 1 includes several antenna units, and the T / R component set 2 includes several T / R components, each of which includes an up-converter, a transmit filter, a transmit power amplifier, a duplexer, a receive filter, a low noise amplifier, a down-converter, etc. The transmit-receive local oscillator 3 includes a transmit local oscillator frequency synthesis circuit, a receive local oscillator frequency synthesis circuit, and related filter circuits.

[0095] Figure 2 To offset the electrical schematic diagram of the separated beam receiving receiver 9, as shown in Figure 2 As shown, the cancellation separation receiving beam receiver 9 includes: an adaptive communication signal eliminator 91, a communication signal reconstructor 92, a digital down-conversion and low-pass filter 93, a multi-channel matching filter 94, a far-near beam separator 95, an antenna alignment receiving beam controller 96, a multi-channel receiving beam signal combiner 97, a surface coverage antenna beam fitter 98 and an antenna receiving beam optimization management 99.

[0096] After receiving the communication demodulated signal, the communication signal reconstructor 92 performs inverse modulation operations such as coding modulation on it, and outputs the reconstructed communication signal to the adaptive communication signal eliminator 91.

[0097] The adaptive communication signal eliminator 91 receives the antenna alignment receiving beam signal and the reconstructed communication signal from the communication signal reconstructor 92, adaptively eliminates the communication signal existing in the antenna alignment receiving beam signal to obtain an antenna alignment receiving beam purified signal, outputs it to the digital down-conversion and low-pass filter 93, and simultaneously receives the receiving beam control pulse signal to generate an antenna alignment receiving beam time enable signal, which is output to the antenna alignment receiving beam controller 96.

[0098] The antenna alignment receiving beam controller 96 receives the antenna alignment receiving beam time enable signal from the adaptive communication signal canceller 91, generates the antenna alignment receiving beam time pulse signal, outputs it to the far and near beam separator 95 and the multi-channel receiving beam combiner 97, and outputs the generated antenna alignment receiving beam control information at the same time.

[0099] The digital down-conversion and low-pass filter 93 performs digital orthogonal down-conversion and digital low-pass filtering on the antenna alignment receiving beam purification signal from the adaptive communication signal eliminator 91 , obtains the antenna alignment receiving beam baseband signal and outputs it to the multi-channel matching filter 94 .

[0100] The multi-channel matching filter 94 performs multi-channel parallel matching on the antenna alignment receiving beam baseband signal output by the digital down-conversion and low-pass filter 93 to obtain matching signals of multiple different beams, and lowers the signal noise floor, and outputs the antenna alignment receiving beam matching signal to the near-far beam separator 95.

[0101] The near-far beam separator 95 receives the antenna alignment receive beam matching signal from the multi-channel matching filter 94 and the antenna alignment receive beam time pulse signal from the antenna alignment receive beam controller 96, separates the near-far effect signal generated by simultaneously receiving multiple antenna alignment signals from the same beam direction but at different distances, separates the far-station antenna alignment signal, obtains the antenna alignment receive beam separated near-far effect signal, and outputs it to the multi-channel receive beam signal combiner 97.

[0102] The multi-channel receiving beam signal combiner 97 receives the antenna alignment receiving beam time pulse signal from the antenna alignment receiving beam controller 96 to generate a diversity receiving pulse signal, and performs diversity combination on the antenna alignment receiving beam separation near-far effect signal from the near-far beam separator 95 according to the timing of the diversity receiving pulse signal, so as to overcome the fast level fading of the scattering communication receiving signal, and obtain the antenna alignment receiving beam combination signal to be output to the surface coverage antenna beam fitter 98.

[0103] The surface coverage antenna beam fitter 98 receives the antenna alignment receiving beam combining signal from the multi-channel receiving beam signal combiner 97, performs surface coverage antenna receiving beam fitting, obtains the antenna beam fitting diagram signal and outputs it to the antenna receiving beam optimization management 99.

[0104] The antenna receiving beam optimization management 99 receives the antenna beam fitting diagram signal from the surface coverage antenna beam fitter 98, optimizes the receiving beam from the antenna beam diagram, and then outputs the optimized antenna alignment receiving beam information.

[0105] Figure 3 It is an electrical schematic diagram of the antenna alignment time synchronization beam signal generator 8 of the present invention. Figure 3 The antenna alignment time synchronization beam transmission signal generator 8 includes: a beam receiving eigenvalue weighter 81, a communication transmit and receive pulse generator 82, a timing matching filter 83, an antenna alignment beam transmission command generator 84, a beam receiving synchronization error extractor 85, an antenna alignment beam transmission controller 86, a beam receiving synchronization signal generator 87 and a beam transmission signal framer 88.

[0106] Among them, the receiving beam eigenvalue weighter 81 receives the optimized antenna alignment receiving beam information, performs eigenvalue weighting and identification on it, and obtains the antenna alignment receiving beam identification signal which is sent to the antenna alignment transmitting beam command generator 84.

[0107] The antenna alignment beam command generator 84 generates an antenna alignment beam transmission command signal according to the antenna alignment receive beam identification signal from the receive beam eigenvalue weighter 81, outputs it to the antenna alignment beam transmission controller 86 and the beam transmission signal framer 88, and simultaneously outputs a communicative beam signal.

[0108] The communication transceiver pulse generator 82 receives the communication transceiver control signal to generate an antenna alignment transmit beam control pulse signal and a receive beam control pulse signal, and outputs them to the receive beam synchronization error extractor 85 and the antenna alignment transmit beam controller 86 respectively.

[0109] The antenna alignment transmission beam controller 86 receives the antenna alignment transmission beam command signal from the antenna alignment transmission beam command generator 84 and the antenna alignment transmission beam control pulse signal from the communication transmission and reception pulse generator 82, generates the antenna alignment transmission beam control signal and the transmission local oscillation instruction and outputs them. The timing matching filter 83 receives the optimized antenna alignment reception beam information, performs matching filtering on it to obtain the antenna alignment reception beam pulse signal, and outputs it to the reception beam synchronization error extractor 85.

[0110] The receiving beam synchronization error extractor 85 receives the receiving beam control pulse signal from the communication transceiver pulse generator 82 and the antenna alignment receiving beam pulse signal from the timing matching filter 83, extracts the antenna alignment receiving beam synchronization error signal by comparing the pulse signals, and outputs it to the receiving beam synchronization signal generator 87.

[0111] The receiving beam synchronization signal generator 87 encodes, shapes and modulates the antenna alignment receiving beam synchronization error signal from the receiving beam synchronization error extractor 85 to obtain a receiving beam time synchronization signal, and outputs it to the transmitting beam signal framer 88.

[0112] The transmitting beam signal framer 88 receives the antenna alignment transmitting beam command signal from the antenna alignment transmitting beam command generator 84, maps and shapes the command signal, and frames it with the receiving beam time synchronization signal from the receiving beam synchronization signal generator 87 to obtain the antenna alignment time synchronization transmitting beam signal and output it.

[0113] The present invention briefly describes the principle that each antenna unit of the antenna array receives a receiving radio frequency signal and sends it into a T / R component set, and after completing the down-conversion, a multi-channel receiving intermediate frequency signal is obtained. The digital preprocessing and DBF unit performs digital sampling and preprocessing on the multi-channel receiving intermediate frequency signal, and completes the DBF processing of the multi-channel digital signal according to the beam control information of the beam control subunit to obtain a receiving communication signal and an antenna alignment receiving beam signal. The received communication signal is sent to the communication signal transceiver unit for receiving processing and then sent to the cancellation separation receiving beam receiver. In the cancellation separation receiving beam receiver, the communication signal in the antenna alignment receiving beam signal is cancelled, and after completing the far and near beam signal After separation, diversity merging and surface coverage multi-beam signal fitting, the optimized antenna alignment receiving beam information is obtained and output to the antenna alignment time synchronization beam transmission signal generator. The antenna alignment time synchronization beam transmission signal generator extracts the beam synchronization error, weights the receiving beam eigenvalues, frames the beam transmission signal, and obtains the beam transmission information containing the timing error and the antenna alignment command. In the idle period of communication, the beam control subunit, digital preprocessing and DBF unit, T / R component assembly, antenna array and other units are controlled to transmit the signal, and the fast scattering antenna alignment is completed through the interaction of the transmit and receive signals.

[0114] The antenna alignment device based on the scattering communication phased array antenna provided in the embodiment of the present invention adopts an antenna alignment multi-beam receiving method that uses a cancellation separation receiving beam receiver to cancel, separate and fit the antenna alignment receiving beam signal and the demodulation signal, and uses an antenna alignment time synchronization beam signal generator to extract errors, weight and frame the optimized antenna alignment receiving beam information, thereby realizing fast antenna alignment without support, only knowing the approximate communication direction and not affecting the normal networking communication conditions, and the average alignment time is no more than 5 minutes. At the same time, the device is implemented based on the FPGA platform and adopts a digital algorithm, with high integration and strong versatility, and can be widely used in the alignment of scattering antennas in scattering communication systems without support.

[0115] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. An antenna alignment device based on a scattering communication phased array antenna, characterized in that: include: Signal transceiver unit, communication signal transceiver unit, transceiver information exchange unit, antenna alignment time synchronization beam signal generator and offset separation beam receiver; The transceiver information exchange unit is used to send the communication receiving beam signal and the antenna alignment receiving beam signal sent by the signal transceiver unit to the communication signal transceiver unit and the offset separation receiving beam receiver respectively; The communication signal transceiver unit is used to receive and process the communication receiving beam signal, send the obtained demodulated signal to the cancellation separation receiving beam receiver, and perform service distribution processing on the demodulated signal and output it; The cancellation and separation receiving beam receiver is used to cancel, separate and fit the antenna alignment receiving beam signal and the demodulated signal, and send the processed optimized antenna alignment receiving beam information to the antenna alignment time synchronization transmitting beam signal generator; The antenna alignment time synchronization beam transmission signal generator is used to perform error extraction, weighting and framing processing on the optimized antenna alignment receiving beam information, and send the antenna alignment time synchronization beam transmission signal obtained after processing to the transceiver information exchange unit; The communication signal transceiver unit is further used to perform business encoding and framing processing on the business information, and send the processed communication transmission beam signal to the transceiver information exchange unit; The transceiver information exchange unit is further used to send the interactive communication transmission beam signal and the antenna alignment time synchronization transmission beam signal to the signal transceiver unit; The cancellation separation receiving beam receiver is specifically used to perform communication signal cancellation, far and near beam signal separation, and surface coverage multi-beam signal fitting on the antenna alignment receiving beam signal and the demodulated signal, and send the optimized antenna alignment receiving beam information obtained by fitting to the antenna alignment time synchronization sending beam signal generator; The offset separation receiving beam receiver includes: an adaptive communication signal canceller, a communication signal reconstructor, a digital down-conversion and low-pass filter, a multi-channel matching filter, a near-far beam separator, an antenna alignment receiving beam controller, a multi-channel receiving beam signal combiner, a surface coverage antenna beam fitter and an antenna receiving beam optimization management; The communication signal reconstructor is used to perform inverse modulation processing of coded modulation on the received communication demodulated signal, and send the reconstructed communication signal obtained by the processing to the adaptive communication signal canceller; The adaptive communication signal canceller is used to receive the antenna alignment receiving beam signal and the reconstructed communication signal, and to perform adaptive elimination processing on the communication signal existing in the antenna alignment receiving beam signal, and to send the processed antenna alignment receiving beam purified signal to the digital down-conversion and low-pass filter; it is also used to receive the receiving beam control pulse signal, and to send the generated antenna alignment receiving beam time enable signal to the antenna alignment receiving beam controller; The antenna alignment receiving beam controller is used to generate an antenna alignment receiving beam time pulse signal based on the antenna alignment receiving beam time enable signal and send it to the far-near beam separator and the multi-channel receiving beam signal combiner, and send the generated antenna alignment receiving beam control signal to the beam control subunit; The digital down-conversion and low-pass filter is used to perform digital orthogonal down-conversion and digital low-pass filtering on the antenna-aligned receiving beam purification signal, and send the antenna-aligned receiving beam baseband signal obtained by the processing to the multi-channel matching filter; The multi-channel matching filter is used to perform multi-channel parallel matching processing on the antenna alignment receiving beam baseband signal, and to perform signal noise reduction processing on the obtained matching signals of multiple different beams, and to send the processed output antenna alignment receiving beam matching signal to the near-far beam separator; The near-far beam separator is used to separate the near-far effect signal and the telestation antenna alignment signal generated by simultaneously receiving multiple antenna alignment signals from different distances in the same beam direction from the antenna alignment receiving beam matching signal and the antenna alignment receiving beam time pulse signal in the receiving beam matching signal, and send the antenna alignment receiving beam separated near-far effect signal to the multi-channel receiving beam signal combiner; The multi-channel receiving beam signal combiner is used to generate a diversity receiving pulse signal through the antenna alignment receiving beam time pulse signal, and to perform diversity combination on the antenna alignment receiving beam separation near-far effect signal based on the diversity receiving pulse signal timing, and to send the obtained antenna alignment receiving beam combination signal to the surface coverage antenna beam fitter; The surface coverage antenna beam fitter is used to perform surface coverage antenna receiving beam fitting processing on the antenna alignment receiving beam combining signal, and send the processed antenna beam fitting diagram signal to the antenna receiving beam optimization management; The antenna receiving beam optimization management is used to optimize the receiving beam from the antenna beam diagram and output the optimized antenna alignment receiving beam information.

2. The device according to claim 1, characterized in that The signal transceiver unit includes an antenna array, a transmitting and receiving component set, a transmitting and receiving local oscillator, a digital preprocessing and digital beam forming subunit and a beam control subunit; The antenna array plane is used to receive the receiving radio frequency signals input by each antenna array element, and send the receiving radio frequency signals to the transmitting and receiving component set; The transmitting and receiving component set is used to perform low-noise amplification and post-processing on the receiving radio frequency signal, mix and filter the processed signal with the receiving local oscillator instruction sent by the transmitting and receiving local oscillator, and send the obtained multi-channel receiving intermediate frequency signal to the digital preprocessing and digital beamforming subunit; The beam control subunit is used to receive the communication reception beam control signal and the communication reception local oscillator control instruction sent by the communication signal transceiver unit, and send them to the digital preprocessing and digital beam forming subunit; The digital preprocessing and digital beamforming subunit is used to perform digital sampling, preprocessing and digital beamforming processing on the multi-channel received intermediate frequency signal, and send the processed communication receiving beam signal and antenna alignment receiving beam signal to the transceiver information exchange unit; The digital preprocessing and digital beamforming subunit is further used to perform digital beamforming processing on the antenna alignment time synchronization transmission beam signal and the communication transmission signal, send the processed multi-channel transmission intermediate frequency signal to the transmission and reception component set, and send the transmission local oscillator instruction from the beam control subunit to the transmission and reception local oscillator; The transmitting and receiving component set is further used to mix and filter the received multi-channel transmitting intermediate frequency signals and the transmitting local oscillator instructions, and send the obtained multi-channel transmitting signals to the antenna array surface; The antenna array surface is also used to transmit multi-path transmission signals through each antenna array element.

3. The device according to claim 2, characterized in that The cancellation separation receiving beam receiver is further used to send the generated antenna alignment receiving beam control signal to the beam control subunit based on the receiving beam control pulse signal sent by the communication signal transceiver unit; The digital preprocessing and digital beamforming subunit is specifically used to send the communication receiving local oscillator control instruction to the transceiver local oscillator, digitally sample and preprocess the multi-channel received intermediate frequency signals, perform digital beamforming processing on the obtained multi-channel digital signals based on the antenna alignment receiving beam control signal and the communication receiving beam control signal, and send the processed communication receiving beam signal and antenna alignment receiving beam signal to the transceiver information exchange unit.

4. The device according to claim 3, characterized in that The communication signal transceiver unit is further used to send a communication transceiver control signal to the antenna alignment time synchronization beam signal generator; The antenna alignment time synchronization beam signal generator is specifically used to extract beam synchronization errors, weight beam eigenvalues, and frame beam signals for the optimized antenna alignment receiving beam information and the communication transceiver control signal, and sends the processed communicative signals, antenna alignment sending beam control signals and local oscillator instructions, and antenna alignment time synchronization sending beam signals to the communication signal transceiver unit, the beam control subunit, and the transceiver information exchange unit, respectively.

5. The device according to claim 4, characterized in that The communication signal transceiver unit is specifically used to receive and process the communication receiving beam signal to obtain a demodulated signal, and send the demodulated signal and the receiving beam control pulse signal to the cancellation separation receiving beam receiver, and perform service distribution processing on the demodulated signal and output it; The communication signal transceiver unit is also specifically used to send the communication transmission beam control signal and the local oscillation instruction to the beam control subunit.

6. The device according to claim 5, characterized in that The transceiver information exchange unit is further used to align the antenna with the time synchronization transmission beam signal and send it to the digital preprocessing and digital beam forming subunit; The digital preprocessing and digital beamforming subunit is also specifically used to perform digital beamforming, digital-to-analog conversion and up-conversion processing on the antenna alignment time synchronization transmission beam signal and the communication transmission signal based on the antenna alignment transmission beam control signal and the communication transmission beam control signal, and send the processed multi-channel transmission intermediate frequency signal to the transmission and receiving component set.

7. The device according to claim 5, characterized in that The beam control subunit controls and manages the receive beam and transmit beam in the digital preprocessing and digital beamforming subunit based on the communication receive beam control signal, the communication transmit beam control signal, the receive local oscillator instruction, the transmit local oscillator instruction, the antenna alignment receive beam control signal and the antenna alignment transmit beam control signal.

8. The device according to claim 4, characterized in that The antenna alignment time synchronization beam-transmitting signal generator comprises: a beam-receiving characteristic value weighter, a communication transceiver pulse generator, a timing matching filter, an antenna alignment beam-transmitting command generator, a beam-receiving synchronization error extractor, an antenna alignment beam-transmitting controller, a beam-receiving synchronization signal generator and a beam-transmitting signal framer; The receiving beam eigenvalue weighter is used to perform eigenvalue weighting and identification processing on the optimized antenna alignment receiving beam information, and send the obtained antenna alignment receiving beam identification signal to the antenna alignment transmitting beam command generator; The antenna alignment beam transmission command generator is used to generate an antenna alignment beam transmission command signal according to the antenna alignment receiving beam identification signal, send it to the antenna alignment beam transmission controller and the beam transmission signal framer, and send the communicative beam signal to the communication signal transceiver unit; The communication transceiver pulse generator is used to receive the communication transceiver control signal to generate an antenna alignment transmit beam control pulse signal and a receive beam control pulse signal, and send them to the receive beam synchronization error extractor and the antenna alignment transmit beam controller respectively; The antenna alignment and transmission beam controller is used to send the generated antenna alignment and transmission beam control signal and the transmission local oscillation instruction to the beam control subunit based on the antenna alignment and transmission beam command signal and the antenna alignment and transmission beam control pulse signal; The timing matching filter is used to perform matching filtering on the optimized antenna alignment receiving beam information, and send the obtained antenna alignment receiving beam pulse signal to the receiving beam synchronization error extractor; The receiving beam synchronization error extractor is used to extract the antenna alignment receiving beam synchronization error signal by pulse signal comparison based on the receiving beam control pulse signal and the antenna alignment receiving beam pulse signal, and send the antenna alignment receiving beam synchronization error signal to the receiving beam synchronization signal generator; The receiving beam synchronization signal generator is used to encode, shape and modulate the antenna alignment receiving beam synchronization error signal, and send the processed receiving beam time synchronization signal to the transmitting beam signal framer; The transmitting beam signal framer is used to map and shape the antenna alignment transmitting beam command signal, and to perform framing processing with the receiving beam time synchronization signal, and to send the processed antenna alignment time synchronization transmitting beam signal to the transmitting and receiving information exchange unit.

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