奇异值时变信号
time-varying signal with singular values
测试与信号变换处理
testing & signal transformation processing
低频缓变信号
low-frequency and slow-changing signals
低频信号变频探测
deteeting the ground point with low frequency electric current signal changing its frequency
电压畸变信号
voltage distortion signal
分数阶信号变换
fractional signal transform