Estimation of single-tone signal frequency with special reference to a frequency-modulated continuous wave system

Chih Fang Huang*, Hsiang Pin Lu, Wei-Hua Chieng

*Corresponding author for this work

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Estimating the frequency of a single-tone signal is a common problem in radar applications, such as frequency-modulated continuous wave radar. This study presents a frequency estimation algorithm called the gradient search method using the derivative of discrete Fourier transform on the received signal samples. The analytical boundaries of the proposed method for different signal-to-noise ratios under the two conditions, with the rectangular window and with the Hann window, are derived. This study also compares the most appropriate algorithms available in the literature, including chirp-Z transform and other advanced methods. Simulation and experimental results show that the proposed algorithm provides superior performance to previous methods.

Original languageEnglish
Article number035002
JournalMeasurement Science and Technology
Volume23
Issue number3
DOIs
StatePublished - 1 Jan 2012

Keywords

  • CramerRao bound (CRB)
  • DFT
  • FFT
  • frequency estimation
  • frequency-modulated continuous wave (FMCW)

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