摘要
针对复杂信号频域特征提取问题,利用Delphi语言编写了Zoom-FFT和基于CZT的频谱细化方法应用软件,以某型坦克传动箱振动速度信号为例进行了对比分析,验证了算法的有效性和程序设计的正确性。结果表明:基于CZT的频谱细化方法具有运算效率高、细化效果好等优点,可以在复杂信号分析中推广应用。
In view of complex signal feature extraction in frequency domain,software of spectrum zoom based Chirp Z Transformation(CZT) and Zoom-FFT are programmed by Delphi.The availability of two algorithms and the correctness of software are validated by contradistinctive analysis of vibration velocity of tank wheel box.The result indicates that the method of spectrum zoom based on CZT boasts of efficient operation and good effect,which can be generalized in complex signal analysis.
出处
《装甲兵工程学院学报》
2012年第1期59-62,共4页
Journal of Academy of Armored Force Engineering
基金
军队科研计划项目
关键词
信号处理
频谱细化分析
线性调频Z变换
特征提取
signal processing
spectrum zoom analysis
Chirp Z Transformation(CZT)
feature extraction