CN116916339A - Multi-beam phased array antenna control method - Google Patents
Multi-beam phased array antenna control method Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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Abstract
The invention discloses a multi-beam phased array antenna control method, which comprises the following steps: step A: powering up to complete the power-up initialization configuration and entering an initialization standby mode; and (B) step (B): the system judges whether a remote control instruction of a normal working mode is received, if so, the system enters the normal working mode; if not, executing the step C; step C: the system judges whether an on-orbit correction mode instruction is received, if yes, the system enters an on-orbit correction mode, if no, a step D is executed, and under the on-orbit correction mode, a primary beam controller sets X beams to be broadband correction or narrowband correction according to the instruction, so that all antenna beams are subjected to broadband correction, all antenna beams are controlled to be subjected to narrowband correction or each beam is controlled to be independently corrected; step D: the system judges whether a test mode instruction is received, if yes, the system enters a test mode, if not, the system returns to execute the step A; the invention has the advantages that: and the on-orbit rapid switching of all wave positions of the multi-beam phased array antenna is realized.
Description
Technical Field
The invention relates to the technical field of satellite measurement and control communication, in particular to a multi-beam phased array antenna control method.
Background
In recent years, the task of aerospace tests in China rises year by year, satellite users also climb year by year, and the requirements on the communication capacity between satellites and ground are higher and higher. Broadband array multi-beam antennas are widely used because of their advantages of large bandwidth, large dynamic range, high sensitivity, high gain, beam coverage agility, etc. However, the traditional broadband multi-beam is mainly applied to ground station satellite communication systems and medium-low orbit satellite communication, has single function, and cannot realize on-orbit fast switching of all wave positions.
A power control architecture for multi-beam configuration, such as disclosed in chinese patent publication No. CN110521247a, calculates a downlink path loss by comparing the reference signal received power with a downlink transmit power from a next generation node B (gNB), obtains parameters from the gNB, and determines PUSCH transmission power based on configured User Equipment (UE) transmission power, a bandwidth of PUSCH resource allocation, a target power including a sum of a cell-specific nominal component and a UE-specific component, a scaling factor, a Downlink (DL) path loss, UE-specific parameters for different types of traffic, and a PUSCH power control adjustment state. It mainly relates to Physical Uplink Shared Channel (PUSCH) power control in multi-beam configuration, and cannot realize the function of on-orbit fast switching of all wave bits of a multi-beam phased array antenna.
Disclosure of Invention
The invention aims to solve the technical problem of how to realize on-orbit rapid switching of all wave positions of a multi-beam phased array antenna.
The invention solves the technical problems by the following technical means: a multi-beam phased array antenna control method comprising the steps of:
step A: powering up to complete the power-up initialization configuration and entering an initialization standby mode;
and (B) step (B): the system judges whether a remote control instruction of a normal working mode is received, if so, the system enters the normal working mode; if not, executing the step C;
step C: the system judges whether an on-orbit correction mode instruction is received, if yes, the system enters an on-orbit correction mode, if no, a step D is executed, under the on-orbit correction mode, a first-level beam controller sets X beams to be broadband correction or narrowband correction according to the instruction, so that all antenna beams are subjected to broadband correction, all antenna beams are controlled to be narrowband correction or each beam is controlled to be independently corrected, the first-level beam controller sends a correction result to a second-level beam controller controlling a corresponding beam network, and the second-level beam controller carries out corresponding correction on the beam network according to the correction result sent by the first-level beam controller;
step D: and C, judging whether a test mode instruction is received by the system, if so, entering a test mode by the system, and if not, returning to execute the step A.
The method comprises the steps of initializing a standby mode, a normal working mode, an on-orbit correction mode, a test mode and other various different modes, meeting different working requirements of an antenna system, realizing wideband correction of all antenna beams in the on-orbit correction mode, controlling narrowband correction of all antenna beams or controlling independent correction of each beam, and correspondingly correcting a beam network by a secondary beam controller according to a correction result sent by a primary beam controller, thereby realizing on-orbit rapid switching of all wave positions of the multi-beam phased array antenna and meeting increasingly complex functional requirements of the antenna system.
Further, the power-on initialization configuration includes: receiving compensation initialization configuration, emission drive initialization configuration, variable frequency initialization configuration, ADC initialization configuration, power supply initialization configuration, dynamic reconfigurable chip initialization configuration, FLASH initialization configuration and software initialization configuration, wherein the ADC and the dynamic reconfigurable chip are built-in chips of a secondary beam controller;
the receiving compensation initialization configuration is to configure a transmitting base state code for a receiving compensation network of an antenna;
the transmission driving initialization configuration is to configure a transmission driving network of an antenna to transmit a ground state code;
the frequency conversion initialization configuration is that in a TTL control interface of a frequency converter, a control signal is in a low level so as to close a frequency conversion channel switch; the frequency converter is connected with the primary beam controller;
the ADC initialization configuration is that in an ADC interface, a function option pin is in a low level, so that two channels of the ADC are in a standby state;
the power supply initialization configuration is to turn off a power supply switch for frequency conversion, receiving compensation and transmitting driving;
the reconfigurable chip initialization configuration is to reset the initial values of other registers except the function configuration register of the chip;
the FLASH initialization configuration is to write in a reset command to reset the chip to a read mode;
the software initialization configuration is to reset all registers to initial values through software reset.
Further, in the normal working mode, the system receives a platform beam pointing control instruction, a beam shape configuration instruction, a receiving link gain and transmitting power control instruction, a system internal host-host switching instruction, a soft reset instruction, a telemetry mode instruction and an angle information instruction;
the beam pointing control instruction is to set a big wave position control pointing, a small wave position control pointing, and a beam pointing controlled by an upper beam position table X or configured independently by the wave position of each beam, wherein X represents the number of a specific wave position table;
the beam shape configuration instruction is to set all beams as X radian forming beams, set all beams as uplink forming beams X or independently configure the wave shapes of all the beams;
the receiving link gain and transmitting power control instruction refers to automatic temperature compensation of the receiving link gain and automatic balanced distribution of transmitting beam power;
the switching instruction of the main and standby machines in the system is to control an antenna transmitting channel switch and an antenna receiving compensation amplifying channel switch;
the soft reset instruction realizes the reset initialization of each parameter of the first-level beam controller and the second-level beam controller software;
the telemetry mode instruction is to transmit back the specified digital telemetry parameters according to the telemetry request instruction;
the angle information instruction is angle information and wave position number information.
Further, after receiving angle information sent by the platform, the primary controller sends azimuth angles and pitch angles to all secondary beam controllers through mapping, the secondary beam controllers calculate phase-shifting control codes and attenuation control codes according to the azimuth angles and the pitch angles, the phase-shifting control codes and the attenuation control codes are sent to a beam network, the phase-shifting control codes are used for controlling beam pointing, and the attenuation control codes are used for controlling gain.
Further, the phase shift control code is calculated by the following steps:
according to beam fingersCalculating a base phase value (a) to an angle i ,b i )，a i Represents the fundamental phase in the X-axis, b i Representing the fundamental phase in the Y-axis;
the phase reference value (a) is calculated from the number n of the secondary beam controller i *nx,b i * ny), X represents the X-axis array element spacing, Y represents the Y-axis array element spacing;
calculating theoretical phase shift value a of each channel i *nx+a i *s(m)+b i *ny+b i * t (m), wherein m represents the number of channels, s represents the X direction, and t represents the Y direction;
calculating a phase change value a caused by time delay i *nx+a i *s(m)+b i *ny+b i * T (m) +t (m), wherein T represents a delay phase value;
calculating a phase value a under weighting from the stored weighting values i *nx+a i *s(m)+b i *ny+b i * T (m) +t (m) +p_l (m), wherein p_l represents the weight phase;
calculating a final phase shift value a based on the stored correction value i *nx+a i *s(m)+b i *ny+b i * T (m) +t (m) +p_l (m) +p_c (m), wherein p_c represents the correction compensation phase;
and converting the phase value calculated by each channel into a value within 360 degrees, carrying out 6-bit quantization, and rounding to obtain the final phase-shift control code.
Still further, the calculating the base phase value according to the beam pointing angle includes:
the nth secondary beam controller receives 1-N beam pointing anglesWhere i=1, 2, …, N, θ i For the i-th azimuth and->Is the ith pitch angle;
let the signal frequency be f, wavelength lambda=3e 8 The matrix element spacing in the x-axis direction and the y-axis direction is dx and dy respectively, then the matrix isBasic phase value (a) i ,b i ) Is that
Where pi represents pi and deg2rad represents the angular radian function.
Further, the attenuation control code is calculated by the following steps:
adding the weight phases and the correction compensation phases of all channels to form a channel attenuation value P_L (m) +P_C (m);
the final attenuation value p_l (m) +p_c (m) +a_t (m) is calculated from the actual measured temperature value a_t (m), and the obtained attenuation value is quantized to form the attenuation control code.
Further, the on-orbit correction mode includes a primary correction flow and a secondary correction flow, the secondary correction flow is a sub-flow of the primary correction flow, and the primary correction flow comprises the following steps:
step c1: starting a primary correction flow, judging the starting state, judging whether the current mode is a correction mode, initializing the peripheral module if the current mode is the correction mode, and correcting the starting failure if the current mode is not the correction mode;
step c2: judging whether the peripheral initialization is successful or not after the peripheral module initialization is finished, if yes, switching frequency points according to the current sequence, and if not, correcting the starting failure;
step c3: waiting for frequency point switching, judging whether the frequency point switching is completed, if yes, starting a secondary correction flow and inputting a current sequence beam number, and if not, continuing waiting for the frequency point switching;
step c4: waiting for single beam correction, judging whether the single beam correction is completed, if yes, judging whether the correction is successful, if not, continuing to wait for the single beam correction, if not, failing the correction flow, if yes, judging whether the correction is the last beam, if yes, returning success, and if not, returning to execute the step of switching the frequency points according to the current sequence.
Further, the process of the secondary correction flow is as follows:
step c301: receiving a current sequence beam number, determining an array element list to be corrected according to the beam number, performing channel switching control according to the array element list, waiting for channel switching, judging whether channel switching is completed, if not, continuing to wait for channel switching, if yes, performing data acquisition, performing FFT operation, judging whether FFT operation is completed, if not, continuing to perform FFT operation, if yes, judging whether the current sequence beam number is the last array element, if not, returning to execute the step of performing channel switching control according to the array element list, and if yes, starting to extract a median value and performing amplitude addition weight calculation to obtain a final correction result;
step c302: and judging whether the correction amplitude-phase addition weight calculation is completed, if so, returning to be successful, ending the secondary correction flow, and if not, continuing the correction amplitude-phase addition weight calculation.
Further, receiving an uplink wave control code control pointing instruction, loading the uplink wave control code instruction, receiving a link gain manual adjustment mode instruction, a transmitting beam power manual adjustment mode instruction and a frequency conversion channel switch control instruction in the test mode;
the upper beam control code control pointing instruction is used for setting upper beam control code to control beam pointing, the phased array antenna receives upper beam control code data packets and sends the wave control codes to the secondary beam controller, and the secondary beam controller controls a beam network and components according to the wave control codes;
the loading upper wave-injecting control code instruction is used for enabling the upper wave-injecting control code to control the pointing instruction;
the receiving link gain manual adjustment mode instruction is used for setting the receiving link gain to modulate according to manual parameters;
the manual adjustment mode instruction of the transmitting beam power is used for setting the power distribution of each beam of the phased array to be an equalizing mode and working at a rated working point;
the variable frequency channel switch control instruction is used for completing corresponding channel switches according to the instruction and refreshing the switches.
The invention has the advantages that: the method comprises the steps of initializing a standby mode, a normal working mode, an on-orbit correction mode, a test mode and other various different modes, meeting different working requirements of an antenna system, realizing wideband correction of all antenna beams in the on-orbit correction mode, controlling narrowband correction of all antenna beams or controlling independent correction of each beam, and correspondingly correcting a beam network by a secondary beam controller according to a correction result sent by a primary beam controller, thereby realizing on-orbit rapid switching of all wave positions of the multi-beam phased array antenna and meeting increasingly complex functional requirements of the antenna system.
Drawings
Fig. 1 is a flowchart of a method for controlling a multi-beam phased array antenna according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an angle information and wave position number transmission link in a multi-beam phased array antenna control method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an antenna wave control code phase reference value in a multi-beam phased array antenna control method according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a primary calibration flow in a control method of a multi-beam phased array antenna according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a secondary calibration flow in a control method of a multi-beam phased array antenna according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment provides a multi-beam phased array antenna control method, which is used for realizing system working mode control, system working parameter control, system telemetry parameter feedback, system initialization setting, system on-orbit correction processing, multi-beam phased array antenna control, temperature-increment control, transmitting beam capacity distribution, weight beam update, full-array wave position update, program on-orbit reconstruction refreshing, single-channel test control and system power supply distribution control according to the working requirements of a high-orbit broadband satellite multi-beam antenna control system.
The embodiment is described with a 2000 transceiver antenna subsystem project, which includes a main control module (i.e., a primary beam controller) and sub-beam control modules (i.e., a secondary beam controller), where the main control module is communicatively connected to a load controller platform (hereinafter referred to as a platform), and the main control module is further connected to a plurality of sub-beam control modules through a bus, and each sub-beam control module is connected to a beam network.
Referring to fig. 1, a high-orbit broadband satellite multi-beam antenna control system is adopted, so that inter-satellite and satellite measurement and control communication can be accurately performed, and the beam agility is high. The multi-beam antenna control system for the high-orbit broadband satellite comprises the following steps:
step A: and according to the working requirements of the multi-beam phased array antenna control system, powering up to complete power-up initialization configuration and entering an initialization standby mode.
The power-on initialization configuration includes: receiving compensation initialization configuration, transmitting drive initialization configuration, variable frequency initialization configuration, ADC initialization configuration, power supply initialization configuration, dynamic reconfigurable chip initialization configuration, FLASH initialization configuration and software initialization configuration. Wherein the ADC and the dynamic reconfigurable chip are built-in chips of the sub-wavelets.
The receiving compensation initialization configuration is to configure a transmitting ground state code for a receiving compensation network of an antenna.
The transmission driving initialization configuration is to configure a transmission driving network of the antenna to transmit a ground state code.
The frequency converter is connected with the main control module, and the frequency conversion initialization configuration is that in a TTL control interface of the frequency converter, a control signal is continuously made to be in a low level, so that a frequency conversion channel switch is closed.
The ADC initialization configuration is that in the ADC interface, the function option pins S1 and S2 are kept at a low level, so that both channels of the ADC are in a standby state.
The power supply initialization configuration is to turn off a power supply switch for frequency conversion, receiving compensation and transmitting driving.
And the initialization configuration of the reconfigurable chip is to perform soft reset on the dynamic reconfigurable chip through a UART serial port, and reset the initial values of other registers of the chip except the functional configuration register.
And the FLASH initialization configuration is to write a reset command to reset the chip to a read mode.
The software initialization configuration is to reset all registers to initial values through software reset.
And (B) step (B): after the system is in the initialization standby mode, a remote control instruction of a normal working mode is received, and the system enters the normal working mode. Under the normal working mode, the system can receive a platform wave beam direction control instruction, a wave beam shape configuration instruction, a receiving link gain and transmitting power control instruction, a system internal main-standby machine switching instruction, a soft reset instruction, a telemetry mode instruction and an angle information instruction.
The beam pointing control instruction mainly comprises setting default big wave position control pointing, setting default small wave position control pointing, and setting to control beam pointing by an upper beam wave position table X (X represents a specific wave position table number) or independently configuring wave position sizes of all the beams.
The beam shape configuration instruction refers to setting all beams as X radian forming beams, setting all beams as uplink forming beams X or configuring the beam shapes of all beams independently.
The receiving link gain and transmitting power control instruction refers to automatic temperature compensation of the receiving link gain and automatic equalization distribution of transmitting beam power.
The switching instruction of the main and standby machines in the system mainly controls the antenna transmitting channel switch control and the antenna receiving compensation amplifying channel switch control.
The soft reset instruction mainly realizes the reset initialization of each parameter of the primary beam controller and the secondary beam controller software.
The telemetry mode instruction is to transmit back the specified digital telemetry parameters according to the telemetry request instruction.
As shown in fig. 2, the angle information instruction is angle information and wave position number information. The first-level controller receives the angle information sent by the platform and then sends azimuth angles and pitch angles to all the second-level beam controllers through mapping, and the first-level beam controller receives the LOAD signals and then sends the LOAD signals to all the second-level beam controllers in the form of short instructions.
As shown in fig. 3, the nth secondary beam controller receives 1-N beam pointing anglesWhere i=1, 2, …, N. First a base phase value is calculated from the beam pointing angle.
Let the signal frequency be f, wavelength lambda=3e 8 And/f, the array element pitches in the x-axis direction and the y-axis direction are dx and dy, respectively, the basic phase value (a i ,b i ) Is that
After obtaining the basic phase value, calculating a phase reference value according to the wavelet control number n: (a) i *nx,b i *ny)；
Calculating theoretical phase shift value of each channel according to the stored measurement code table
a i *nx+a i *s(m)+b i *ny+b i *t(m)
Where m represents the number of channels, s represents the X direction, and t represents the Y direction.
Based on beamPointing angleLooking up a delay code table to obtain a delay amount, calculating a phase change value caused by delay according to a stored delay phase mapping table,
a i *nx+a i *s(m)+b i *ny+b i *t(m)+T(m)
where m represents the number of channels and T represents the phase value.
Calculating phase values under weighting from stored weighting values
a i *nx+a i *s(m)+b i *ny+b i *t(m)+T(m)+P_L(m)
Where p_l represents the weight phase.
Calculating final phase shift value based on stored correction value
a i *nx+a i *s(m)+b i *ny+b i *t(m)+T(m)+P_L(m)+P_C(m)
Where p_c represents the correction compensation phase.
And converting the phase value calculated by each channel into a value within 360 degrees, carrying out 6-bit quantization, and rounding to obtain a final phase control code. Such as: if the phase of the mth channel is turned to a value within 360 degrees to P_m, it is quantized to P_m/5.625 and rounded to form a 6-bit phase shift control code.
The attenuation code calculation is to add the weight phase and the correction compensation phase to form the channel attenuation value
P_L(m)+P_C(m)
According to the actually measured temperature value, calculating the final attenuation value according to the temperature attenuation mapping relation
P_L(m)+P_C(m)+A_T(m)
And quantizing the obtained attenuation value to form an attenuation control code.
The secondary beam controller transmits phase-shift control codes and attenuation control codes to the beam network, wherein the phase-shift control codes are used for controlling beam pointing, and the attenuation control codes are used for controlling gain.
Step C: after the system is in the initialization standby mode, judging whether a normal working mode remote control instruction is received, if not, receiving an on-orbit correction mode instruction, and entering an on-orbit correction mode by the system to ensure the beam shape and the pointing precision. In the on-orbit correction mode, the primary beam controller sets X beams to be broadband correction or narrowband correction according to the instruction, and the selection of broadband and narrowband is the selection of corresponding beam frequency points, so that the broadband correction of all antenna beams can be realized, the narrowband correction of all antenna beams can be controlled, or the independent correction of each beam can be controlled. All beams may be implemented in the correction process to invoke the ground correction value, all beams invoke the on-track correction value, or invoke the default correction value, or the on-track correction value, or a combination of both.
As shown in fig. 4 and 5, the on-track correction mode first performs a primary correction flow, and the secondary correction flow is a sub-flow of the primary correction flow. In the TTL control interface of the primary wave beam controller frequency conversion, the control signal is continuously in a high level, so that the frequency conversion channel switch is opened. In the ADC interface, the function option pins s1=1 and s2=0 are continuously made, so that the ADC is in a normal operation mode in which only one channel is opened. And a power supply switch for frequency conversion, receiving compensation and transmitting driving is started. The values of the R, M, A three registers are obtained through calculation of the output frequency point, the frequency-converted reference frequency and the frequency-converted product phase discrimination frequency, then the values are combined into 21bit data, and the 21bit data is sent to frequency conversion according to a frequency conversion protocol. According to the transmission protocols of the primary beam controller and the secondary beam controller, the data sent by the primary beam controller contains 1B subarray number+1B beam number+8B channel switch. The simultaneous control of single subarray and multiple channels can be realized. And after the data acquisition flow, sequentially filtering, extracting a median value, calculating a correction result and calculating a correction amplitude phase, and finally finishing updating of the correction table. The primary correction flow is shown in fig. 4, and the secondary correction flow is shown in fig. 5.
The general process of the first-stage correction flow is as follows:
step c1: starting a primary correction flow, judging the starting state, judging whether the current mode is a correction mode, initializing the peripheral module if the current mode is the correction mode, and correcting the starting failure if the current mode is not the correction mode;
step c2: judging whether the peripheral initialization is successful or not after the peripheral module initialization is finished, if yes, switching frequency points according to the current sequence, and if not, correcting the starting failure;
step c3: waiting for frequency point switching, judging whether the frequency point switching is completed, if yes, starting a secondary correction flow and inputting a current sequence beam number, and if not, continuing waiting for the frequency point switching;
step c4: waiting for single beam correction, judging whether the single beam correction is completed, if yes, judging whether the correction is successful, if not, continuing to wait for the single beam correction, if not, failing the correction flow, if yes, judging whether the correction is the last beam, if yes, returning success, and if not, returning to execute the step of switching the frequency points according to the current sequence.
The general process of the secondary correction flow is as follows:
step c301: receiving a current sequence beam number, determining an array element list to be corrected according to the beam number, performing channel switching control according to the array element list, waiting for channel switching, judging whether channel switching is completed, if not, continuing to wait for channel switching, if yes, performing data acquisition, performing FFT operation, judging whether FFT operation is completed, if not, continuing to perform FFT operation, if yes, judging whether the current sequence beam number is the last array element, if not, returning to execute the step of performing channel switching control according to the array element list, and if yes, starting to extract a median value and performing amplitude addition weight calculation to obtain a final correction result; the median is extracted, namely, a median is taken and is also called as a median, the data with the amplitude higher than the median of each channel is attenuated, and the data lower than the median is not processed; as well as the phase, data above the median of the phases are phase adjusted with a phase shifter, and the phase below the median is not processed.
Step c302: and judging whether the correction amplitude-phase addition weight calculation is completed, if so, returning to be successful, ending the secondary correction flow, and if not, continuing the correction amplitude-phase addition weight calculation.
Step D: after the system is in the initialization standby mode, judging whether a normal working mode instruction is received, if not, judging whether an on-track correction mode instruction is received, if not, judging whether a test mode instruction is received, and if so, entering a test mode by the system. In the test mode, the method comprises the steps of controlling a pointing instruction by using an uplink wave control code, loading the uplink wave control code instruction, receiving a link gain manual adjustment mode instruction, transmitting a beam power manual adjustment mode instruction and controlling an inverter channel switch.
The uplink wave control code control pointing instruction is set to be uplink wave control code to control beam pointing, the phased array antenna receives uplink wave control code data packets and directly sends wave control codes to the secondary beam controller, and the secondary beam controller directly sends the wave control codes to the beam network and the components.
And the loading upper injection wave control code instruction enables the upper injection wave control code to control the pointing instruction.
And the receiving link gain manual adjustment mode instruction sets the receiving link gain to be modulated according to manual parameters.
And the manual adjustment mode instruction of the transmitting beam power sets the power distribution of each beam of the phased array to be an equalizing mode and works at a rated working point.
And the frequency conversion channel switch control instruction completes the corresponding channel switch according to the instruction and refreshes the switch.
Through the technical scheme, the method comprises the steps of initializing a standby mode, a normal working mode, an on-orbit correction mode, a test mode and other various different modes, meeting different working requirements of an antenna system, realizing wideband correction of all antenna beams in the on-orbit correction mode, controlling narrowband correction of all antenna beams or controlling independent correction of each beam, and enabling a secondary beam controller to correspondingly correct a beam network according to correction results sent by a primary beam controller, so that on-orbit rapid switching of all wave positions of the multi-beam phased array antenna can be realized, and increasingly complex functional requirements of the antenna system are met.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method of controlling a multi-beam phased array antenna, comprising the steps of:
step A: powering up to complete the power-up initialization configuration and entering an initialization standby mode;
and (B) step (B): the system judges whether a remote control instruction of a normal working mode is received, if so, the system enters the normal working mode; if not, executing the step C;
step C: the system judges whether an on-orbit correction mode instruction is received, if yes, the system enters an on-orbit correction mode, if no, a step D is executed, under the on-orbit correction mode, a first-level beam controller sets X beams to be broadband correction or narrowband correction according to the instruction, so that all antenna beams are subjected to broadband correction, all antenna beams are controlled to be narrowband correction or each beam is controlled to be independently corrected, the first-level beam controller sends a correction result to a second-level beam controller controlling a corresponding beam network, and the second-level beam controller carries out corresponding correction on the beam network according to the correction result sent by the first-level beam controller;
step D: and C, judging whether a test mode instruction is received by the system, if so, entering a test mode by the system, and if not, returning to execute the step A.
2. The method of claim 1, wherein the power-on initialization configuration comprises: receiving compensation initialization configuration, emission drive initialization configuration, variable frequency initialization configuration, ADC initialization configuration, power supply initialization configuration, dynamic reconfigurable chip initialization configuration, FLASH initialization configuration and software initialization configuration, wherein the ADC and the dynamic reconfigurable chip are built-in chips of a secondary beam controller;
the receiving compensation initialization configuration is to configure a transmitting base state code for a receiving compensation network of an antenna;
the transmission driving initialization configuration is to configure a transmission driving network of an antenna to transmit a ground state code;
the frequency conversion initialization configuration is that in a TTL control interface of a frequency converter, a control signal is in a low level so as to close a frequency conversion channel switch; the frequency converter is connected with the primary beam controller;
the ADC initialization configuration is that in an ADC interface, a function option pin is in a low level, so that two channels of the ADC are in a standby state;
the power supply initialization configuration is to turn off a power supply switch for frequency conversion, receiving compensation and transmitting driving;
the reconfigurable chip initialization configuration is to reset the initial values of other registers except the function configuration register of the chip;
the FLASH initialization configuration is to write in a reset command to reset the chip to a read mode;
the software initialization configuration is to reset all registers to initial values through software reset.
3. The method according to claim 1, wherein the system receives a platform beam pointing control command, a beam shape configuration command, a receiving link gain and transmit power control command, a system internal host-to-host switching command, a soft reset command, a telemetry mode command, and an angle information command in a normal operation mode;
the beam pointing control instruction is to set a big wave position control pointing, a small wave position control pointing, and a beam pointing controlled by an upper beam position table X or configured independently by the wave position of each beam, wherein X represents the number of a specific wave position table;
the beam shape configuration instruction is to set all beams as X radian forming beams, set all beams as uplink forming beams X or independently configure the wave shapes of all the beams;
the receiving link gain and transmitting power control instruction refers to automatic temperature compensation of the receiving link gain and automatic balanced distribution of transmitting beam power;
the switching instruction of the main and standby machines in the system is to control an antenna transmitting channel switch and an antenna receiving compensation amplifying channel switch;
the soft reset instruction realizes the reset initialization of each parameter of the first-level beam controller and the second-level beam controller software;
the telemetry mode instruction is to transmit back the specified digital telemetry parameters according to the telemetry request instruction;
the angle information instruction is angle information and wave position number information.
4. The method of claim 1, wherein the primary controller sends azimuth angle and elevation angle to all secondary beam controllers after receiving the angle information sent by the platform through mapping, the secondary beam controllers calculate phase-shift control codes and attenuation control codes according to the azimuth angle and elevation angle, the phase-shift control codes and the attenuation control codes are sent to the beam network, the phase-shift control codes are used for controlling beam pointing, and the attenuation control codes are used for controlling gain.
5. The method of claim 4, wherein the phase shift control code is calculated by:
calculating a base phase value (a) from the beam pointing angle i ，b i )，a i Represents the fundamental phase in the X-axis, b i Representing the fundamental phase in the Y-axis;
the phase reference value (a) is calculated from the number n of the secondary beam controller i *nx，b i * ny), X represents the X-axis array element spacing, Y represents the Y-axis array element spacing;
calculating theoretical phase shift value a of each channel i *nx+a i *s(m)+b i *ny+b i * t (m), wherein m represents the number of channels, s represents the X direction, and t represents the Y direction;
caused by computational delayPhase change value a i *nx+a i *s(m)+b i *ny+b i * T (m) +t (m), wherein T represents a delay phase value;
calculating a phase value a under weighting from the stored weighting values i *nx+a i *s(m)+b i *ny+b i * T (m) +t (m) +p_l (m), wherein p_l represents the weight phase;
calculating a final phase shift value a based on the stored correction value i *nx+a i *s(m)+b i *ny+b i * T (m) +t (m) +p_l (m) +p_c (m), wherein p_c represents the correction compensation phase;
and converting the phase value calculated by each channel into a value within 360 degrees, carrying out 6-bit quantization, and rounding to obtain the final phase-shift control code.
6. The method of claim 5, wherein calculating the base phase value from the beam pointing angle comprises:
the nth secondary beam controller receives 1-N beam pointing anglesWhere i=1, 2, …, N, θ i For the i-th azimuth and->Is the ith pitch angle;
let the signal frequency be f, wavelength lambda=3e 8 And/f, the array element pitches in the x-axis direction and the y-axis direction are dx and dy, respectively, the basic phase value (a i ,b i ) Is that
Where pi represents pi and deg2rad represents the angular radian function.
7. The method of claim 6, wherein the attenuation control code is calculated by:
adding the weight phases and the correction compensation phases of all channels to form a channel attenuation value P_L (m) +P_C (m);
the final attenuation value p_l (m) +p_c (m) +a_t (m) is calculated from the actual measured temperature value a_t (m), and the obtained attenuation value is quantized to form the attenuation control code.
8. The method according to claim 1, wherein the on-orbit correction mode includes a primary correction procedure and a secondary correction procedure, the secondary correction procedure is a sub-procedure of the primary correction procedure, and the primary correction procedure is as follows:
step c1: starting a primary correction flow, judging the starting state, judging whether the current mode is a correction mode, initializing the peripheral module if the current mode is the correction mode, and correcting the starting failure if the current mode is not the correction mode;
step c2: judging whether the peripheral initialization is successful or not after the peripheral module initialization is finished, if yes, switching frequency points according to the current sequence, and if not, correcting the starting failure;
step c3: waiting for frequency point switching, judging whether the frequency point switching is completed, if yes, starting a secondary correction flow and inputting a current sequence beam number, and if not, continuing waiting for the frequency point switching;
step c4: waiting for single beam correction, judging whether the single beam correction is completed, if yes, judging whether the correction is successful, if not, continuing to wait for the single beam correction, if not, failing the correction flow, if yes, judging whether the correction is the last beam, if yes, returning success, and if not, returning to execute the step of switching the frequency points according to the current sequence.
9. The method of claim 8, wherein the secondary correction procedure comprises:
step c301: receiving a current sequence beam number, determining an array element list to be corrected according to the beam number, performing channel switching control according to the array element list, waiting for channel switching, judging whether channel switching is completed, if not, continuing to wait for channel switching, if yes, performing data acquisition, performing FFT operation, judging whether FFT operation is completed, if not, continuing to perform FFT operation, if yes, judging whether the current sequence beam number is the last array element, if not, returning to execute the step of performing channel switching control according to the array element list, and if yes, starting to extract a median value and performing amplitude addition weight calculation to obtain a final correction result;
step c302: and judging whether the correction amplitude-phase addition weight calculation is completed, if so, returning to be successful, ending the secondary correction flow, and if not, continuing the correction amplitude-phase addition weight calculation.
10. The method according to claim 1, wherein in the test mode, an uplink control code control pointing instruction is received, an uplink control code loading instruction, a link gain manual adjustment mode instruction, a transmit beam power manual adjustment mode instruction, and a frequency conversion channel switch control instruction are received;
the upper beam control code control pointing instruction is used for setting upper beam control code to control beam pointing, the phased array antenna receives upper beam control code data packets and sends the wave control codes to the secondary beam controller, and the secondary beam controller controls a beam network and components according to the wave control codes;
the loading upper wave-injecting control code instruction is used for enabling the upper wave-injecting control code to control the pointing instruction;
the receiving link gain manual adjustment mode instruction is used for setting the receiving link gain to modulate according to manual parameters;
the manual adjustment mode instruction of the transmitting beam power is used for setting the power distribution of each beam of the phased array to be an equalizing mode and working at a rated working point;
the variable frequency channel switch control instruction is used for completing corresponding channel switches according to the instruction and refreshing the switches.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117176267A (en) * | 2023-11-01 | 2023-12-05 | 成都华兴大地科技有限公司 | Phased array antenna channel rapid calibration method based on FPGA software |
| CN118244217A (en) * | 2024-05-28 | 2024-06-25 | 中国电子科技集团公司第十四研究所 | Quick variable transmitting wave beam testing method based on scaling link |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117176267A (en) * | 2023-11-01 | 2023-12-05 | 成都华兴大地科技有限公司 | Phased array antenna channel rapid calibration method based on FPGA software |
| CN117176267B (en) * | 2023-11-01 | 2023-12-29 | 成都华兴大地科技有限公司 | Phased array antenna channel rapid calibration method based on FPGA software |
| CN118244217A (en) * | 2024-05-28 | 2024-06-25 | 中国电子科技集团公司第十四研究所 | Quick variable transmitting wave beam testing method based on scaling link |
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