GPS IF data record and replay system based on FPGA
会议名称：《第三届中国卫星导航学术年会》
会议日期：2012年
学科分类：08[工学] 080401[工学-精密仪器及机械] 081105[工学-导航、制导与控制] 0804[工学-仪器科学与技术] 0825[工学-航空宇航科学与技术] 0811[工学-控制科学与工程]
关 键 词：FPGA GPS IF record and playback USB2.0 high speed transfer
摘 要：The non-reproducibility of the real signals makes on-site debugging more complex, and frequent on-site tests cost a lot, bringing a lot of trouble to the complete performance evaluation of the GPS receiver system. This thesis proposes a GPS IF data record and replay system based on FPGA and USB, describes the system design scheme, analyzes an optimizing design technique which guarantees the continuous, high-speed and stable record and replay of GPS data, and realizes a system in which IF data frequency point and data width can be flexibly adjusted. The tests show that the data record and replay format and results satisfy the design demands;the data format is of high flexibility, the high-speed data record and replay is continuous and stable which meets the performance evaluation demands of the receiver. The flexibility of data format and real-time replay not only enhance its practical value but also set the terms for the GPS and INS joint data record and replay system.