Adaptive Viterbi-Based Range-Instantaneous Doppler Algorithm for ISAR Imaging of Ship Target at Sea

Yang Li, Kuisheng Liu, Ran Tao, Xia Bai

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The range-instantaneous Doppler (RID) algorithm has been successfully used in high-resolution inverse synthetic aperture radar (ISAR) imaging of maneuvering ship targets. Parametric technique of RID is an important method to produce the well-focused RID ISAR images by estimating the parameters of received signal modeled as multicomponent polynomial-phase signals in each range bin. However, the cross terms of signals and false maxima of time-frequency distributions cause image blurring and the loss of fine detail. In this paper, we first propose a new time-frequency transform, named multiproduct high-order matched-phase transform (MPHMT), to suppress the cross terms and amplify the auto terms of signals. Then, an adaptive Viterbi search is proposed to select the optimal model parameters by an adaptive penalization function. Finally, associating MPHMT and adaptive Viterbi search with RID, we further propose the adaptive Viterbi-based RID algorithm for ISAR ship imaging. Simulation and real-data-based results demonstrate that our proposed algorithm is valid.

Original languageEnglish
Article number6805672
Pages (from-to)417-425
Number of pages9
JournalIEEE Journal of Oceanic Engineering
Volume40
Issue number2
DOIs
Publication statusPublished - 1 Apr 2015

Keywords

  • Inverse synthetic aperture radar (ISAR)
  • Multiproduct high-order matched-phase transform (MPHMT)
  • Range-instantaneous Doppler (RID) algorithm
  • Ship target
  • Viterbi algorithm (VA)

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Li, Y., Liu, K., Tao, R., & Bai, X. (2015). Adaptive Viterbi-Based Range-Instantaneous Doppler Algorithm for ISAR Imaging of Ship Target at Sea. IEEE Journal of Oceanic Engineering, 40(2), 417-425. Article 6805672. https://doi.org/10.1109/JOE.2014.2312237