Four-surface array radar control and scheduling method based on optical fiber communication

Abstract

The invention discloses a four-surface array radar control and scheduling method based on optical fiber communication. The control and scheduling method is composed of a control system and an execution system. The control system is composed of four signal processing board cards which are divided into a master signal processing board card and three slave signal processing board cards, the master signal processing board card completes unified issuing of system work commands and carries out radar signal processing on echoes of a master radar area array, and the slave signal processing board card carries out radar signal processing on the echoes of a slave radar area array. And the three slave signal processing board cards respectively complete echo radar signal processing work of the corresponding slave radar area arrays. The execution system comprises four radar area arrays which are divided into a master radar area array and three slave radar area arrays, the four radar area arrays receive working commands from the master signal processing board card of the control system, the master radar area array returns echo data to the master signal processing board card, and the three slave radar area arrays return echo data to the corresponding slave signal processing board cards. The signal processing board card of the control system is connected with the radar area array of the slave system through an optical fiber. The four-surface array radar can be controlled and dispatched through optical fiber communication, one to four radar surface arrays can work at the same time flexibly, and the four-surface array radar control system has high universality and practicability.

Description

Technical Field

[0001] The present invention relates to the technical field of four-sided array radars, and particularly to a control and scheduling method for a four-sided array radar based on optical fiber communication Background Art

[0002] With the development of radar detection technology, radars with a four-sided two-dimensional phased array system have been widely used, and can conveniently achieve 360° omnidirectional detection. During the operation of a four-sided array radar, it is necessary to ensure that the four radar plane arrays work simultaneously, that is, the scanning periods need to be synchronized. Refer to Figure 2 , in general control methods, the main plane array needs to be respectively connected to three slave plane arrays with clock synchronization cables, initial scanning cables, and communication cables, which makes the structure of the four-sided array radar system complex and not easy to install and maintain Summary of the Invention

[0003] The purpose of the present invention is to address the deficiencies of the prior art and provide a control and scheduling method for a four-sided array radar based on optical fiber communication

[0004] The technical solution for achieving the purpose of the present invention is as follows: A control and scheduling method for a four-sided array radar based on optical fiber communication, characterized in that: it consists of a control system and an execution system. The control system is responsible for issuing work commands and completing the processing of echo radar signals, and is composed of one main signal processing module and three slave signal processing modules. The execution system is responsible for receiving the work commands of the control system and transmitting back the echo data collected by the radar plane arrays, and is composed of one main radar plane array and three slave radar plane arrays. Communication between the control system and the execution system is carried out through optical fibers

[0005] Step 1: The main signal processing module of the control system simultaneously sends start work commands to the four radar plane arrays of the execution system through optical fibers

[0006] Step 2: After receiving the work instructions, the four radar plane arrays of the execution system start working simultaneously and collect echo signals

[0007] Step 3: SFP0 of the main radar plane array of the execution system uploads echo data to SFP0 of the main signal processing module of the control system through optical fibers; SFP1 of the slave radar plane arrays of the execution system uploads echo data to SFP0 of the corresponding slave signal processing modules of the control system through optical fibers

[0008] Step 4: The four signal processing modules of the control system perform radar signal processing on the echo data of the corresponding plane arrays and screen out target information

[0009] Both the main signal processing module and the slave signal processing module in the control system are developed based on the FPGA platform, with exactly the same functions, and different signal processing modules can be replaced with each other, only the fiber optic communication connection methods with the execution system are different.

[0010] In the execution system, the functions of data acquisition and transmission of the main radar planar array and the slave radar planar array are also developed based on the FPGA platform, with exactly the same functions, and different planar arrays can be replaced with each other, only the fiber optic communication connection methods with the control system are different.

[0011] The signal processing module in the control system has four optical port communication modules, namely SFP0, SFP1, SFP2, and SFP3. After connecting the optical fibers, high-speed Serdes communication can be achieved. SFP0 can be programmed through the FPGA to both send and receive data; SFP1, SFP2, and SFP3 can be programmed through the FPGA to only send data and not receive data.

[0012] The main signal processing module and the slave signal processing module in the control system have a total of 16 optical port communication modules. When the four-sided array radar system starts to work, the 16 optical port communication modules simultaneously send out work commands through the optical fibers.

[0013] Both the main and slave arrays in the execution system have two optical port communication modules. After completing a work command, the two optical port communication modules simultaneously send back echo data through the optical fibers.

[0014] The radar planar array in the execution system has two optical port communication modules, namely SFP0 and SFP1. After connecting the optical fibers, high-speed Serdes communication can be achieved. SFP0 can be programmed through the FPGA to both send and receive data; SFP1 can be programmed through the FPGA to only send data and not receive data.

[0015] Compared with the prior art, the present invention has the following remarkable advantages: (1) Compared with the connection method of the traditional four-sided array radar, the connection of the present invention is simple. There is no need for the radar planar arrays in the execution system to be connected by cables. Only need to be connected to the signal processing module of the control system through optical fibers, which has the advantages of simple connection, fewer interfaces, and easy maintenance. (2) There is no other difference in essence between the main radar planar array and the slave radar planar array in the execution system, and there is no other difference in essence between the main signal processing module and the slave signal processing module in the control system, only the fiber optic connection methods are different, and any replacement can be carried out conveniently. (3) The present invention can be expanded to control multi-sided array radars with any number of planar arrays, only need to correspondingly expand the number of signal processing modules and the number of optical port communication modules of the signal processing modules in the control system, which has high versatility. Description of the Drawings

[0016] Figure 1Overall Structure of the Control and Scheduling Method for a Four-Faced Array Radar Based on Optical Fiber Communication in the Present Invention

[0017] Figure 2 It is a working schematic diagram of a traditional four-faced array radar.

[0018] Figure 3 It is an application example of the present invention in a four-faced array radar system.

[0019] Figure 4 It is the working process of the present invention in the application example.

[0020] Figure 5 It is the implementation process of radar signal processing. Specific Embodiment

[0021] To make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described below with reference to the accompanying drawings.

[0022] The control and scheduling method for a four-faced array radar based on optical fiber communication in the present invention is jointly composed of a control system and an execution system. The overall structure is as Figure 1 shown, and the application example in a four-faced array radar is as Figure 3 shown. Programming is carried out through FPGA in the signal processing board, and the acquisition and data transmission in the radar planar array are also completed on the FPGA platform. The upper computer is developed on the CPU platform. The following takes this application example in the four-faced array radar system to illustrate the specific use of the present invention, and the implementation process is as Figure 4 shown.

[0023] The four signal processing boards of the control system communicate with the CPU of the upper computer platform through PCIe interfaces. The upper computer simultaneously sends start work commands to the four signal processing boards. After receiving the work instructions, the 16 optical port communication modules of the signal processing boards simultaneously send work commands outward. However, only the SFP0 of the three slave signal processing boards respectively communicates with the SFP1 of the three slave radar planar arrays through a pair of optical fibers. And the SFP1 of the radar planar array is programmed through FPGA to only be able to send data and not receive data. Therefore, the work commands sent by the slave signal processing boards are invalid.

[0024] The four optical port communication modules of the main board respectively communicate with the SFP0 of the four radar planar arrays through optical fibers. The SFP0 of the radar planar array is programmed through FPGA to be able to both send and receive data. Therefore, it can successfully receive the start work command and start to work.

[0025] After the radar planar array starts working, the collected echo is transmitted back to the signal processing board for radar signal processing. Each radar planar array simultaneously sends echo data outward through SFP0 and SFP1. The SFP0 of the signal processing board can be programmed through FPGA to both send and receive data; SFP1, SFP2, and SFP3 can be programmed through FPGA to only send data and not receive data. The SFP0 of the main radar planar array is connected to the SFP0 of the main signal processing board. At this time, the echo data is received by the main signal processing board, completing the radar signal processing.

[0026] The SFP1 of the slave planar array is connected to the SFP0 of the slave signal processing board. At this time, the echo data will also be received by the corresponding slave signal processing board, completing the radar signal processing. Although the SFP1s of the three slave signal arrays are respectively connected to the SFP1, SFP2, and SFP3 of the main signal processing board through optical fibers, the SFP1, SFP2, and SFP3 of the signal processing board can be programmed through FPGA to only send data and not receive data, so there will be no conflict.

[0027] The radar signal processing process is as Figure 5 shown. After the four signal processing boards complete the radar signal processing process, the target information in the echo is screened out, and the target information packet is uploaded to the CPU through the PCIe interface. The upper computer reads the data from it to complete the data processing. One cycle completes the working process of the four-panel array radar.

Claims

1. A control and scheduling method for a four-sided array radar based on optical fiber communication, characterized in that: It consists of a control system and an execution system. The control system is responsible for issuing work commands and completing echo radar signal processing. It is composed of one main signal processing module and three slave signal processing modules. The execution system is responsible for receiving work commands from the control system and transmitting back the echo data collected by the radar planar array. It is composed of one main radar planar array and three slave radar planar arrays. Communication between the control system and the execution system is carried out through optical fibers. Step 1: The main signal processing module of the control system simultaneously sends startup work commands to the four radar planar arrays of the execution system through optical fibers. Step 2: After receiving the work instructions, the four radar planar arrays of the execution system start working simultaneously to collect echo signals. Step 3: SFP0 of the main radar planar array of the execution system uploads echo data to SFP0 of the main signal processing module of the control system through optical fibers; SFP1 of the slave radar planar arrays of the execution system uploads echo data to SFP0 of the corresponding slave signal processing modules of the control system through optical fibers. Step 4: The four signal processing modules of the control system perform radar signal processing on the echo data of the corresponding planar arrays and screen out target information from them.

2. The method for controlling and scheduling a four-sided array radar based on optical fiber communication according to claim 1, characterized in that: Both the main signal processing module and the slave signal processing modules in the control system are developed based on the FPGA platform, with exactly the same functions. Different signal processing modules can be replaced with each other, except for the different optical fiber communication connection methods with the execution system.

3. The method for controlling and scheduling a four-sided array radar based on optical fiber communication described in claim 1, characterized in that: The functions of collecting and data transmission of the main radar planar array and the slave radar planar arrays in the execution system are also developed based on the FPGA platform, with exactly the same functions. Different planar arrays can be replaced with each other, except for the different optical fiber communication connection methods with the control system.

4. The method for controlling and scheduling a four-sided array radar based on optical fiber communication according to claim 1, characterized in that: The signal processing modules in the control system have four optical port communication modules, namely SFP0, SFP1, SFP2, and SFP3. After connecting the optical fibers, high-speed Serdes communication can be achieved. SFP0 can be programmed through FPGA to both send and receive data; SFP1, SFP2, and SFP3 can be programmed through FPGA to only send data and not receive data.

5. The method for controlling and scheduling a four-sided array radar based on optical fiber communication according to claim 1, wherein: The main signal processing module and the slave signal processing modules in the control system have a total of 16 optical port communication modules. When the four-sided array radar system starts working, the 16 optical port communication modules simultaneously send work commands outward through optical fibers.

6. The method for controlling and scheduling a four-sided array radar based on optical fiber communication according to claim 1, characterized in that: Both the main and slave planar arrays in the execution system have two optical port communication modules. After completing a work command, the two optical port communication modules simultaneously transmit back the echo data through optical fibers.

7. The method for controlling and scheduling a four-sided array radar based on optical fiber communication according to claim 1, characterized in that: The radar planar array in the execution system has two optical port communication modules, namely SFP0 and SFP1. After connecting the optical fibers, high-speed Serdes communication can be achieved. SFP0 can be programmed through FPGA to both send and receive data; SFP1 can be programmed through FPGA to only send data and not receive data.

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