Journal of Systems Engineering and Electronics ›› 2013, Vol. 24 ›› Issue (6): 919-924.doi: 10.1109/JSEE.2013.00107

• ELECTRONICS TECHNOLOGY • Previous Articles     Next Articles

Dynamic threshold for SPWVD parameter estimation based on Otsu algorithm

Ning Ma* and Jianxin Wang   

  1. School of Electronic Engineering and Optoelectronic Technology, Nanjing University of Science and Technology, Nanjing 210094, China
  • Online:2013-12-24 Published:2010-01-03


Time-frequency-based methods are proven to be effective for parameter estimation of linear frequency modulation (LFM) signals. The smoothed pseudo Winger-Ville distribution (SPWVD) is used for the parameter estimation of multi-LFM signals, and a method of the SPWVD binarization by a dynamic threshold based on the Otsu algorithm is proposed. The proposed method is effective in the demand for the estimation of different parameters and the unknown signal-to-noise ratio (SNR) circumstance. The performance of this method is confirmed by numerical simulation.