基于Chirp变换的快速离散时间尺度变换

Fast Discrete Time Scale Transformation Based on Chirp Transform

提出了一种新的快速离散时间尺度变换算法。给出了离散时间信号尺度变换的构造表达式及其Chirp变换快速实现流程。讨论了Chirp变换实现中的参数选取准则,分析了Chirp变换的信号带宽问题。讨论了算法的运算效率并与其它算法进行了比较。仿真试验证明了本文算法的有效性。

A new fast discrete time scale transformation algorithm is presented and an appropriate expression of discrete time scale transformation is supplied. The expression can be calculated fast by using the chirp transform. The performances of the proposed algorithm are analyzed by comparing with other algorithms. The validity of the algorithm is shown by simulation results.