用李萨如图形变化的快慢测多普勒效应中的频率差（测速）

摘要

The measurement of frequency shift was difficult in speedometer system based on Doppler effect .The application of Lissajous figures in the system was introduced .The experiment was more practical because a remote controlled toy car was used to simulate real vehicle .%针对当前利用多普勒效应测速实验中的测量频率差难的问题，通过实验发现利用李萨如图形变化的快慢测多普勒效应中的频率差，效果很好。实验中设计了使用遥控赛车模拟现实中的车辆，实验更具现实性。