Journal of Jishou University(Natural Sciences Edition) ›› 2021, Vol. 42 ›› Issue (4): 55-58.DOI: 10.13438/j.cnki.jdzk.2021.04.011

• Computer and communication • Previous Articles     Next Articles

Multi-Frequency Signal Parameter Analysis Based on High-Order Rectangular Convolution Window

SHUAI Guoxiang, WANG Xuming, ZHANG Zhiwei, PENG Hao   

  1. (1.Nanjing Xinxuan Electronic System Engineering Co., Ltd., Nanjing 210003, Jiangsu China; 2. College of Information Science and Engineering, Jishou University, Jishou 416000, Hunan China)
  • Online:2021-07-25 Published:2021-11-17

Abstract: When the multi-frequency signal is sampled asynchronously, in order to reduce the negative influence of the frequency spectrum leakage and the fence effect in the fast Fourier transform of the multi-frequency signal. Based on the theoretical basis of rectangular convolution window and the triple-spectral-line interpolation, proposed a method of signal parameter estimation that combines a high-order rectangular convolution window and triple-spectral-line interpolation. The simulation experiment results show that, for the amplitude and frequency of the multi-frequency signal, the method of high-order rectangular convolution window triple-spectral-line interpolation has higher estimation accuracy than the method of FFT and the method of Hanning window.

Key words: multi-frequency signal, parameter estimation, high-order rectangular window, triple-spectral-line interpolation, fast Fourier transform

WeChat e-book chaoxing Mobile QQ