线性调频源线性度实时数字校正技术研究

Research of Real-time Digital Revise Technique for Linearity in LFMCW System

线性调频连续波(LFMCW)在测距等方面有广阔的应用,但是其对于源的线性度要求较高。采用FPGA实现了线性调频连续波信号源的实时数字式闭环线性校正网络,利用SystemView完成了系统的仿真,并用VHDL完成了软件的设计。该方法具有实现方便,性能稳定,校正后线性度高以及可达到较好的实时处理能力等特点。

LFMCW has a wide application in measuring distance,but it requires a well linearity in LFMCW system.The FPGA is used to implement real-time digital closed loop linear revise network,and use System View to simulate system,then design software with VHDL language.The method has the advantages of easy implementation,stable performance,high linearity after revise and well real time processing ability.