High-speed Data Acquisition System Implementation And Its Applications

With the rapid development of digital globalization,the digital signal processing has been widely used in many fields.As an important interface between digital signal and analog signal processing,data acquisition is developing towards high speed and ultra-wideband.In this paper,a high-speed signal acquisition system is designed and implemented in accordance with the requirements of digital signal processing for a MIMO radar imaging project.1?Combining the existing data acquisition methods and the design requirements of this topic,this paper presents a signal acquisition and data processing program.And use ISE and ModelSim co-simulation to complete the maximum sampling rate of 3GSPS system schematic design.2?Based on the theory of power integrity and signal integrity,the PCB design scheme of the system is proposed.The PCB stack,vias and transmission lines were analyzed and designed,and through the simulation of the PCB crosstalk,reflection and power network to verify correctness,this paper completed the PCB design to meet the requirements of the project.3?The 3GSPS real-time sampling,data storage and Ethernet transmission function are verified by hardware testing and logic implementation,the test results show that the system meets the design requirements.The hardware design ensures that the electrical characteristics of the system meet the requirements.The FPGA logic design verifies the system's data acquisition,storage and Ethernet transmission.4?The hardware and software implementation of the MIMO radar signal processing system is as follows:Firstly,the MIMO radar echo signal simulator is built.Then the MIMO radar signal processing algorithm is simulated by MATLAB.After that,the echo signal data is collected and the signal processing algorithm based on FPGA is used to get the target information.Finally,the data is transferred to the PC for further analysis via Ethernet.