【作者】 沙军； 叶明；

【Author】 SHA Jun,YE Ming College of Information Science and Technology,Nanjing University of Aeronautics and Astronautics Nanjing 210016

【机构】 南京航空航天大学信息科学与技术学院；

【摘要】 本文介绍了基于FPGA的微型飞行器数字中频调制解调系统的实现方法,并设计了一种能够同时锁定频偏误差和时偏误差的方案。针对调制系统,重点介绍了Coatas环和Gardner环,并分别给出了它们的MATLAB仿真图和Modelsim仿真图。本系统已经在硬件平台上成功运行,能够锁定1%以内的频偏和0.1%以内的时偏。更多还原

【Abstract】 A implementation of MAV digital IF Modulation and demodulation based on FPGA was introduced,a scheme which can lock both the error of frequency offset and time offset was also designed.For modulated system Coatas loop and Gardner arithmetic was introduced,and their Matlab simulation figures and Modelsim simulation diagrams was also discussed.This system has been run successfully in the hardware platforms,the capability of locking frequency offset and time offset can be up to 1%and 0.1%respectively.更多还原