SATA Bus Technology Based On Radar I / Q Data Recorder Replay System Design

With increasingly rising technological level of military, meteorological and navigation radar, radar’s original I/Q data volume is becoming larger and larger. In order to better keep track of the original I/Q data and provide convenience for the need of data playback and analysis, an equipment which can store radar I/Q data is urgently needed. The equipment must guarantee to deal with storage operation for a long time, with large data volume and at a high speed. In the meanwhile, the equipment should be in favor of the function of data playback.Against the background of next generation ofDoppler weather radar digital processing systemin Business Division of CETC38Sichuang Electronic Radar, the paper connects the processor and storage stack through SATA bus and breaks through the bottleneck of performance and speed of data record. The project takes SATA hard disk whose capacity is IT as the main storage stack to satisfy the project need for storage capacity, takes FPGA as the main control chip to well realize the function of SATA agreement host inside FPGA and control logical operation of the whole board; and regards Ethernet as the operation interface to provide a convenient operational approach for staff.Based on analysis of SATA agreement, the paper completes hardware design of radar I/Q data record playback system, design of SATA agreement transport layer and link layer inside FPGA andstudies the implementation method of radar I/Q data record playback system based on the SATA bus in detail.Finally, the paper conducts functional simulation by applying software Quartus II. The simulation result shows that radar I/Q data record playback system based on SATA bussing technique can achieve expected functional goal.