Analysis and comparison of ω-k and polar format algorithm for spotlight SAR

Tao Zeng*, Guang Ping Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Investigates the properties of both ω-k and PFA (polar format algorithm) under the mode of spotlight SAR. Based upon classifying preprocessing of spotlight SAR echo signals as dechirp in temporal domain and matched filtering in frequency domain, the corresponding different implementations from the two algorithms are analyzed respectively and comparatively. Analysis and comparison are presented in terms of the residual video phase, impacts resulting from the approximation of the algorithms associated with, as well as interpolation. Dechirp can reduce the computation load substantially, yet RVP is unavoidable, RVP does not exist inherently in the case of matched filtering.

Original languageEnglish
Pages (from-to)536-539
Number of pages4
JournalBeijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume26
Issue number6
Publication statusPublished - Jun 2006

Keywords

  • Dechirp
  • Matched filtering
  • Polar format algorithm
  • Spotlight SAR
  • ω-k algorithm

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Zeng, T., & Huang, G. P. (2006). Analysis and comparison of ω-k and polar format algorithm for spotlight SAR. Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology, 26(6), 536-539.