| 摘要: |
| 在保持实时测量的基础上对传统的短时傅里叶变换（STFT）测频算法加以改进，采用了基
于多相结构的短时测频算法和CZT算法，大大缩短了瞬时测频的运算时间，提高了测频精度
，减少了运算资源，更加利于工程实现。 |
| 关键词: 瞬时测频 多相结构 短时FFT变换 CZT变换 |
| DOI： |
|
| 基金项目: |
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| An improved algorithm for instant frequency measurement |
| CHEN Zhu |
| () |
| Abstract: |
| The traditional STFT(Short Time Fourier Transform) frequency measurement algorit
hm is improved.By adopting the STFT frequency measurement
algorithm based on multi-phase structure and the chirp Z transform(CZT) algor
ithm,the computation time is reduced greatly,the frequency measurement prec
ision is improved,the resource occupation is saved. In conclusion, the improved
algorithm has great engineering practicability. |
| Key words: instant frequency measurement multi-phase structure short-time Fourier trans
form（STFT） chirp Z transform（CZT） |
《电讯技术》编辑部 