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A Compound Algorithm for Parameter Estimation of Frequency Hopping Signal Based on STFT and Morlet Wavelet Transform

  • Bao-Lin Zhang
  • Jun LvEmail author
  • Jia-Rui Li
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10955)

Abstract

When the frequency hopping signals are analyzed in time and frequency domain, the time of arithmetic operation by Short-time Fourier Transform (STFT) is short, but the estimation accuracy of hopping time is not high; Morlet wavelet transform algorithm is an accurate estimation algorithm but its complexity is so high that it spends a lot of time in calculating. Therefore, based on the study of the two algorithms, this paper proposes a composite algorithm for parameter estimation of hopping frequency signal. Firstly, the STFT algorithm is used to search the suspected region of the hopping time, and then the Morlet wavelet transform is used to find the time accurately. So, it can get the accurate estimation of the hopping time and frequency. Theoretical analysis and simulation results show the feasibility and effectiveness of the proposed algorithm.

Keywords

STFT algorithm Morlet wavelet transform Hopping time estimation Frequency estimation 

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Information and CommunicationArmy Academy of Armored ForcesBeijingChina
  2. 2.Beijing University of Posts and TelecommunicationsBeijingChina

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