Velocity estimation of moving targets with stepped-frequency radar based on Doppler frequency difference

Hao Fei Wang*, Li Xiang Ren

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

By analyzing the signal model of stepped-frequency waveform, a novel method for velocity measurement is proposed. The method is based on Doppler frequency difference which is achieved by using Hough transform. As the estimated velocity is inversely proportional to the frequency step size instead of the carrier frequency of the transmitted signal as the pulse-Doppler (PD) processing, the new algorithm can achieve much wider unambiguous velocity range. Furthermore, non-coherent integration of the sub-pulses with different carrier frequencies can be implemented by Hough transform to improve the anti-noise performance. Besides, field experimental results show that the high range resolution profile (HRRP) of a bullet with high speed can be reconstructed correctly without distortion.

Original languageEnglish
Pages (from-to)78-82
Number of pages5
JournalJournal of Beijing Institute of Technology (English Edition)
Volume23
Issue number1
Publication statusPublished - Mar 2014

Keywords

  • Doppler frequency difference
  • Hough transform
  • Stepped-frequency
  • Velocity estimation

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