A method for quickly switching antenna array parameters through multi-module integration

Abstract

The present invention discloses a method for quickly switching antenna array parameters through multi-module integration, belonging to the field of microwave anechoic chamber simulation antenna array control. The method for quickly switching antenna array parameters includes the following steps: Step 1, a PCIe high-speed communication module receives antenna control parameters from a simulation experiment console; Step 2, a multi-channel optical fiber high-speed communication module parallelly sends the antenna control parameters in Step 1 to a large-scale decoding and parallel setting output module; Step 3: The large-scale decoding and parallel setting output module transmits the antenna control parameters to corresponding antenna groups. The present invention solves the problem of long switching time of traditional antenna array control parameters.

Description

Technical Field

[0001] The present invention belongs to the field of microwave anechoic chamber simulation antenna array control, and more specifically relates to a method for quickly switching antenna array parameters through multi-module integration. Background Art

[0002] At present, the microwave anechoic chamber is an important part of the development system of the guidance system. It constructs a system for evaluating the performance indicators of the guidance system in a semi-physical simulation manner, and can efficiently, flexibly, and repeatedly test and evaluate the performance indicators of the guidance system, solving problems such as high costs for actual field tests and difficult-to-meet test conditions.

[0003] The RF simulator and the simulation experiment console construct a virtual simulation electromagnetic environment according to the performance indicators required for testing the seeker under test, obtain relevant control parameters through a series of formula calculations, and then send them to the turntable control machine through the calibration system to control the pointing of the seeker under test by operating the turntable. At the same time, the control parameters are sent to the feeding system through the angle control machine, the target and environment simulator, etc., and the feeding system controls the antenna array to generate the electromagnetic characteristics of the virtual target. The basic unit of the antenna array is the triple antenna, and the operator can realize the equivalent radiation center based on the triple antenna by controlling the amplitude, phase of the electromagnetic signal and switching the antenna switch according to the "amplitude centroid formula". Multiple groups of triple antennas form the entire antenna array, and finally generate the equivalent electromagnetic radiation characteristics of the virtual target for the seeker to receive and test.

[0004] As Figure 1 shown, the traditional antenna array control parameters need to pass through multiple intermediate devices to reach the feeding system. Network interfaces are commonly used for data communication between devices, and on the feeding system, the "scanning one antenna by one" method is used to complete the parameter setting of all antennas. It can be seen that the traditional antenna parameter setting method has a long data transmission path and a large transmission path delay; in the parameter setting of the last stage, the time required to cycle through all antenna parameters in the "scanning one by one" method is also very long. In this way, the time required to completely switch a set of antenna parameters to another new set of antenna parameters is very long, that is, the time for the virtual target to change from one state to another is very long. In the early stage when the simulation accuracy requirements were not high, the switching time of the traditional method could meet the requirements. However, with the technological development of the guidance system, the simulation accuracy requirements have gradually increased, and the time interval for antenna parameter switching needs to be smaller and smaller. The traditional method cannot meet the requirements in terms of switching time. Therefore, the simulation system urgently needs to improve in terms of rapid antenna parameter setting. Summary of the Invention

[0005] In view of the increasing demand for rapid switching of antenna array parameters in the microwave anechoic chamber simulation system, the present invention proposes a method for rapid switching of antenna array parameters implemented by multi-module integration. Multiple high-speed communication modules and large-scale high-speed decoding-setting modules are used. After integration, the antenna parameters calculated by the simulation experiment console can be quickly transmitted and set into all antennas in the array in parallel at one time, and the antenna state, that is, the electromagnetic state of the virtual target, can be quickly switched following the system.

[0006] To achieve the above object, the present invention is implemented by the following technical solutions:

[0007] The device includes a simulation experiment console, a PCIe receiving module, an optical fiber transmitting module, a large-scale decoding and parallel setting module, and an antenna array;

[0008] The simulation experiment console is connected to the PCIe receiving module through a PCIe3.0 bus, and the PCIe receiving module is connected to the optical fiber transmitting module; the simulation experiment console integrates the angle control machine and the target environment simulator. All real-time antenna parameter calculations are completed by the simulation experiment console, and the antenna parameter data is sent to the PCIe receiving module, and the PCIe receiving module distributes the data to different optical fiber transmitting modules;

[0009] The optical fiber transmitting module is connected to the large-scale decoding and parallel setting module through an optical fiber. Each optical fiber module receives the parameters of all antennas in this group and then sends them to the subsequent large-scale decoding and parallel setting module;

[0010] The large-scale decoding and parallel setting module is respectively connected to the corresponding antenna groups. After serial-parallel conversion, the large-scale decoding and parallel setting module converts the serial optical fiber data into parallel parameters, then performs large-scale decoding, quickly obtains the parallel control parameters of each antenna, and finally sets all control parameters to the antenna array in parallel at the same time.

[0011] Preferably, the PCIe receiving module and the optical fiber transmitting module are arranged on the same FPGA and are installed close to the simulation console, and the large-scale decoding and parallel setting module is installed close to the front of the antenna array.

[0012] Preferably, each antenna group in the antenna array corresponds to an optical fiber transmitting module and a large-scale decoding and parallel setting module.

[0013] Preferably, each large-scale decoding and parallel setting module decodes 4 sets of triple antennas in this group, that is, a total of 12 antenna control parameters.

[0014] The method for rapid switching of the antenna array parameters is implemented by the following steps:

[0015] Step 1: The PCIe high-speed communication module receives the antenna control parameters from the simulation experiment console;

[0016] Step 2: The multi-channel fiber optic high-speed communication module parallelly sends the antenna control parameters in Step 1 to the large-scale decoding and parallel setting output module;

[0017] Step 3: The large-scale decoding and parallel setting output module transmits the antenna control parameters to the corresponding antenna groups.

[0018] Preferably, for Step 1: The PCIe high-speed communication module receives the antenna control parameters from the simulation experiment console, which is implemented by the following detailed method: The PCIe high-speed communication module is installed closely to the high-computing power computer of the simulation experiment console. The PCIe high-speed communication module is connected to the multi-channel fiber optic high-speed communication module using the PCIe3.0 bus. The PCIe3.0×8 interface module directly uses the hard core with the complete standard PCIe3.0 protocol embedded in the FPGA. After receiving high-speed data, it distributes the antenna group parameter data to each antenna group according to the antenna group identification word embedded in the data, completing the forwarding of the antenna group parameter data.

[0019] Preferably, for Step 2: The multi-channel fiber optic high-speed communication module parallelly sends the antenna control parameters in Step 1 to the large-scale decoding and parallel setting output module, which is implemented by the following technical solution: The subsequent fiber optic transmission module is designed in the same FPGA as the PCIe3.0×8 interface module. Internally, a compact data line embedded in the FPGA is used to connect the two modules, enabling high-speed communication between the two modules within the FPGA. The fiber optic transmission module directly uses the high-speed serial communication hard core embedded in the FPGA to support single-channel fiber optic high-speed transmission

[0020] Preferably, for Step 3: The large-scale decoding and parallel setting output module transmits the antenna control parameters to the corresponding antenna groups, which is implemented by the following technical solution: The large-scale decoding and parallel setting output module is placed in front of the antenna array, receives the serial data sent by the fiber optic, and then obtains the control parameters of each antenna after decoding; The large-scale decoding and parallel setting output module internally includes fiber optic receiving modules for all antenna grouping parameters. Each fiber optic module receives the parameters of all antennas in its group and then sends them to the subsequent decoding module; Each decoding module decodes 4 sets of triple antennas in its group, that is, a total of 12 antenna control parameters.

[0021] Preferably, the control parameters for each antenna include the phase shifter control code, the digital control attenuator control code, and the antenna switch control code.

[0022] Advantages of the present invention:

[0023] After comprehensively using the PCIe high-speed receiving module, high-speed optical fiber forwarding module, large-scale decoding and parallel setting module, the antenna parameters calculated by the simulation experiment console can be quickly transmitted and set into all antennas in the array in parallel at one time, and the antenna state, that is, the electromagnetic state of the virtual target, can be switched at high speed following the system; the time from the calculation output of the antenna array parameters to the actual setting into the antenna array is greatly reduced compared with the traditional method, solving the problem of insufficient switching speed of the antenna array parameters in the microwave anechoic chamber simulation system. Brief Description of the Drawings

[0024] Figure 1 is the main block diagram of the microwave anechoic chamber;

[0025] Figure 2 is the block diagram of each module of the present invention;

[0026] Figure 3 is the block diagram of the PCIe high-speed receiving module;

[0027] Figure 4 is the block diagram of the optical fiber transmitting module;

[0028] Figure 5 is the block diagram of the large-scale decoding and parallel setting module. Detailed Embodiment

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention and the drawings.

[0030] The described device includes a simulation experiment console, a PCIe receiving module, an optical fiber transmitting module, a large-scale decoding and parallel setting module, and an antenna array;

[0031] The simulation experiment console is connected to the PCIe receiving module through the PCIe3.0 bus, and the PCIe receiving module is connected to the optical fiber transmitting module; the simulation experiment console integrates the angle control machine and the target environment simulator, and the entire real-time antenna parameter calculation is completed by the simulation experiment console, and the antenna parameter data is sent to the PCIe receiving module, and the PCIe receiving module distributes the data to different optical fiber transmitting modules;

[0032] The optical fiber transmitting module is connected to the large-scale decoding and parallel setting module through an optical fiber. Each optical fiber module receives the parameters of all antennas in this group and then sends them to the subsequent large-scale decoding and parallel setting module;

[0033] The large-scale decoding and parallel setting module are respectively connected to the corresponding antenna groups. The large-scale decoding and parallel setting module performs serial-to-parallel conversion, converts the serial optical fiber data into parallel parameters, then performs large-scale decoding, quickly obtains the parallel control parameters of each antenna, and finally simultaneously sets all the control parameters to the antenna array in parallel.

[0034] The PCIe receiving module and the optical fiber transmitting module are arranged within the same FPGA and are installed close to the simulation console. The large-scale decoding and parallel setting module are installed close to the front of the antenna array. Each antenna group in the antenna array corresponds to an optical fiber transmitting module and a large-scale decoding and parallel setting module. Each large-scale decoding and parallel setting module decodes 4 sets of triple antennas in this group, that is, a total of 12 antenna control parameters.

[0035] As Figure 2 shown, the primary high-speed communication module selects the PCIe high-speed interface protocol to replace the network interface protocol used in the traditional method. The PCIe high-speed interface protocol is a high-speed serial computer expansion bus standard proposed by Intel in 2001, aiming to replace the old bus standard. The PCIe bus uses differential pair transmission mode, has an Rx receiving pair and a Tx transmitting pair, and operates in full-duplex mode with extremely high transmission speed. The present invention selects the third-generation PCIe3.0, and the single-pair transmission rate can reach 2GB / s. The PCIe bus can perform multi-channel transmission. The present invention selects 8-channel transmission, and the transmission rate of PCIe3.0×8 can reach 16GB / s, with a subversive speed.

[0036] To ensure the high-speed performance of PCIe, the PCIe high-speed communication module is physically close to the high-computing power computer of the simulation experiment console, so it is relatively far from the antenna array. A long communication cable is required to transmit the control parameters to the antenna array. The present invention uses a high-speed optical fiber communication module for parameter transmission to replace the network cable used in the traditional method. The high-speed optical fiber communication module has the advantages of large transmission capacity, small transmission loss, and convenient laying, and the serial transmission rate can reach 12Gb / s. The parameters received from the PCIe high-speed communication module are forwarded to the high-speed optical fiber communication module and output at high speed after serial conversion.

[0037] The last stage is the large-scale decoding and parallel setting module, which receives the antenna parameters fed by the optical fiber. First, this module performs serial-to-parallel conversion, converts the serial optical fiber data into parallel parameters, then performs large-scale decoding, quickly obtains the parallel control parameters of each antenna, and finally simultaneously sets all the control parameters to the antenna array in parallel, replacing the traditional operation of setting antenna parameters one by one, greatly reducing the time for setting the antenna parameters at the end.

[0038] Embodiment 1

[0039] The method for rapid switching of antenna array parameters is implemented by the following steps:

[0040] Step 1: The PCIe high-speed communication module receives the antenna control parameters from the simulation experiment console.

[0041] The PCIe high-speed receiving module, high-speed optical fiber forwarding module, and large-scale decoding and parallel setting module used in the present invention are all implemented based on a high-performance FPGA. The high-performance FPGA is manufactured based on a 28nm logic process. Its interface rate can theoretically reach 1GHz@DDR, and it can stably operate at 800MHz@DDR in actual engineering, which can fully connect to the required PCIe and optical fiber high-speed interfaces. Since the FPGA adopts a 28nm logic process, its internal clock network can operate at a maximum clock rate of 800MHz. Even with the delay introduced by combinational logic added, it can easily achieve an ultra-high-speed communication data rate. The FPGA also has rich programmable logic resources, fully meeting the usage requirements in large-scale decoding and parallel logic control.

[0042] As Figure 3 shown, the PCIe3.0×8 interface module directly uses the hard core with a complete standard PCIe3.0 protocol embedded in the FPGA. After high-speed data is received, it is distributed to the antenna group parameters according to the antenna group identification word embedded in the data, completing the forwarding of antenna group parameter data.

[0043] Step 2: The multi-channel optical fiber high-speed communication module parallelly sends the antenna control parameters in Step 1 to the large-scale decoding and parallel setting output module; as Figure 4 shown, in order not to waste the high-speed performance of the PCIe3.0×8 interface module, the present invention designs the subsequent optical fiber sending module in the same FPGA as the PCIe3.0×8 interface module. The internal uses the compact data line embedded in the FPGA to connect the two modules, enabling high-speed communication between the two modules within the FPGA. The optical fiber sending module directly uses the high-speed serial communication hard core embedded in the FPGA to support single-channel optical fiber high-speed sending.

[0044] Step 3: The large-scale decoding and parallel setting output module transmits the antenna control parameters to the corresponding antenna group.

[0045] As Figure 5 shown, the physical location of the large-scale decoding and parallel setting module is placed in front of the antenna array. It receives the serial data sent by the optical fiber, and then obtains the control parameters of each antenna after decoding.

[0046] The optical fiber receiving module inside the module contains all the antenna grouping parameters. Each optical fiber module receives the parameters of all the antennas in its own group and then sends them to the subsequent decoding module. Each decoding module decodes 4 sets of triple antennas in its own group, that is, the control parameters of a total of 12 antennas. Each antenna parameter includes the phase shifter control code, the digital controlled attenuator control code, the antenna switch control code, etc. The antenna groups have a parallel "receiving - decoding" architecture, and the relevant control codewords of each output antenna parameter are also output in parallel to the antenna array. Finally, the entire module decodes the parameter control codes of all the antennas, forming a huge parallel output control signal to complete the operation of setting all the antennas in the antenna array simultaneously.

[0047] It should be understood that the above - mentioned specific embodiments of the present invention are only used for exemplary illustration or explanation of the principle of the present invention, and do not constitute a limitation to the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modification examples falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A multi-module integrated device for quickly switching antenna array parameters, characterized in that: The described device includes a simulation experiment console, a PCIe receiving module, an optical fiber transmitting module, a large-scale decoding and parallel setting module, and an antenna array; The simulation experiment console is connected to the PCIe receiving module through a PCIe3.0 bus, and the PCIe receiving module is connected to the optical fiber transmitting module; the simulation experiment console integrates the angle control machine and the target environment simulator, and the simulation experiment console completes all real-time antenna parameter calculations and sends the antenna parameter data to the PCIe receiving module, and the PCIe receiving module then distributes the data to different optical fiber transmitting modules; The optical fiber transmitting module is connected to the large-scale decoding and parallel setting module through an optical fiber. Each optical fiber module receives the parameters of all antennas in this group and then sends them to the subsequent large-scale decoding and parallel setting module; The large-scale decoding and parallel setting module is respectively connected to the corresponding antenna group. The large-scale decoding and parallel setting module performs serial-to-parallel conversion, converts the serial optical fiber data into parallel parameters, then performs large-scale decoding, quickly obtains the parallel control parameters of each antenna, and finally simultaneously sets all control parameters to the antenna array in parallel; Among them, each antenna group in the antenna array corresponds to an optical fiber transmitting module and a large-scale decoding and parallel setting module.

2. The multi-module integrated antenna array parameter fast switching device according to claim 1, wherein: The PCIe receiving module and the optical fiber transmitting module are arranged in the same FPGA and are installed close to the simulation console, and the large-scale decoding and parallel setting module is installed close to the front of the antenna array.

3. A multi-module integrated device for quickly switching antenna array parameters according to claim 1, characterized in that: Each of the large-scale decoding and parallel setting modules decodes 4 sets of triple antennas in this group, that is, a total of 12 antenna control parameters.

4. A method for quickly switching antenna array parameters through multi-module integration, characterized in that: The method for quickly switching the antenna array parameters is implemented by the following steps: Step 1: The PCIe high-speed communication module receives the antenna control parameters of the simulation experiment console; Step 2: The multi-channel optical fiber high-speed communication module sends the antenna control parameters in Step 1 to the large-scale decoding and parallel setting module in parallel; Step 3: The large-scale decoding and parallel setting output module transmits the antenna control parameters to the corresponding antenna group; For Step 1: The PCIe high-speed communication module receives the antenna control parameters of the simulation experiment console, which is implemented by the following detailed method: The PCIe high-speed communication module is installed close to the high-computing power computer of the simulation experiment console. The PCIe high-speed communication module is connected to the multi-channel optical fiber high-speed communication module through a PCIe3.0 bus. The PCIe3.0×8 interface module directly uses the hard core with a complete standard PCIe3.0 protocol embedded in the FPGA. After receiving the high-speed data, it distributes the parameters of each antenna group according to the antenna group identification word embedded in the data, and completes the forwarding of the antenna group parameter data; Step 2 described above: The multi-channel fiber optic high-speed communication module parallelly sends the antenna control parameters in Step 1 to the large-scale decoding and parallel setting output module, which is implemented by the following technical solution: The fiber optic sending module at the later stage is designed in the same FPGA as the PCIe3.0×8 interface module. Inside, a compact data line embedded in the FPGA is used to connect the two modules, enabling high-speed communication between the two modules within the FPGA. The fiber optic sending module directly uses the high-speed serial communication hard core embedded in the FPGA to support single-channel fiber optic high-speed sending. Step 3 described above: The large-scale decoding and parallel setting output module transmits the antenna control parameters to the corresponding antenna group, which is implemented by the following technical solution: The large-scale decoding and parallel setting output module is placed in front of the antenna array, receives the serial data sent by the fiber optic, and then obtains the control parameters of each antenna after decoding; the large-scale decoding and parallel setting output module internally includes fiber optic receiving modules for all antenna grouping parameters. Each fiber optic module receives the parameters of all antennas in its group and then sends them to the decoding module at the later stage; each decoding module decodes 4 sets of triple antennas in its group, that is, a total of 12 antenna control parameters.

5. A method for quickly switching antenna array parameters through multi-module integration according to claim 4, characterized in that: The control parameters are the control parameters of each antenna, including the phase shifter control code, the digital control attenuator control code, and the antenna switch control code.

Images