The Study Of USB3.0-based High-speed Data Transfer Technique

According to the demand of Radar signal and data transmission under complex environment, the bottleneck of high speed data transmission during dada acquisition, analysis and playback process was broken on the basis of the increasing development of computer technology. According to USB3.0specification, the connection was built between high speed real-time dada acquisition/playback equipment and the main controlling computers to realize high speed transmission of mass data. This system not only guaranteed data’ high speed entrance for rapid analysis, but also ensured playback data rapid afflux into playback equipment for algorithm confirmation.Consequently, an efficient way was erected for Radar’s echo signal performance study, dynamic performance test and Radar signal’ new processing algorithm. Moreover, the connection of data acquisition equipments and computers with USB3.0interface enhanced the dada analysis ability of data acquisition and playback equipment and amplified its application scope. Owing to the universality of USB3.0interface, the adaptability of data acquisition and playback equipment was better.This paper studied the thought and structure of high speed and mass data transmission for Radar data acquisition system. High speed data transmission with USB3.0was proposed. The theory and technological approaches of the problems to be solved were investigated. Device controller for USB3.0interface was designed with VHDL programme. In this way, high speed transmission on the basis of USB3.0was realized. This transmission interface can be applied in Radar test system. It can achieve real-time transmission of high speed ADC acquisition data flow for Radar front system. With the strong processing and analysis function of PC machine, the echo data can be used for subsequent processing and simulation analysis.This project solved the problems such as USB3.0interface control, Radar high speed data transmission and storage. With test examination, the highest data transmission speed reached300MBytes/s, which can currently meet the requirements of most high-resolution Radar in data transmission.