摘要
在时域测量中,将测试得到的准阶跃信号直接进行时频变换时,由于时间窗有限,时域截断将产生很大的频谱泄漏误差。本文对准阶跃信号与截尾斜波信号线性组合后的信号进行时频变换,能有效地消除该频谱误差。
In time domain measurement, great spectrum error results from the time-timited window when the measured step-like signal is directly transformed from time to frequency, domain. The authors use the linear combination of step-like signal and ramp signal to finish the time-frequency domain transformations and the spectrum error is eliminated.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
1992年第3期30-35,共6页
Journal of Harbin Institute of Technology
关键词
准阶跃信号
频谱误差消除
Step-like signal
spectrum error eliminating
