Doppler-shifted frequencies 多普勒差频
With increasing longitudinal distance, the velocity Power Spectral Density (PSD) peak shifted to lower frequencies.
随着流向距离的增大，速度功率谱(PSD)曲线呈现峰值向低频移动的现象。
youdao
应用推荐
模块上移
模块下移
不移动