Skip to main content
EURASIP Journal on Advances in Signal Processing
Download PDF
  • Research Article
  • Open access
  • Published:

Nonlinear Frequency Scaling Algorithm for High Squint Spotlight SAR Data Processing

EURASIP Journal on Advances in Signal Processing volume 2008, Article number: 657081 (2008) Cite this article

Abstract

This paper presents a new approach for the squint-mode spotlight SAR imaging. Like the frequency scaling algorithm, this method starts with the received signal dechirped in range. According to the geometry for the squint mode, the reference range of the dechirping function is defined as the range between the scene center and the synthetic aperture center. In our work, the residual video phase is compensated firstly to facilitate the following processing. Then the range-cell migration with a high-order range-azimuth coupling form is processed by a nonlinear frequency scaling operation, which is different from the original frequency scaling one. Due to these improvements, the algorithm can be used to process high squint SAR data with a wide swath and a high resolution. In addition, some simulation results are given at the end of this paper to demonstrate the validity of the proposed method.

Publisher note

To access the full article, please see PDF.

Author information

Authors and Affiliations

  1. Department of Electronic Engineering, School of Electronic, Information, and Electrical Engineering, Shanghai Jiao Tong University, 1-411 SEIEE Buildings, 800 Dongchuan Road, Shanghai, 200240, China

    Lihua Jin & Xingzhao Liu

Authors
  1. Lihua Jin
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Xingzhao Liu
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Xingzhao Liu.

Rights and permissions

Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and permissions

About this article

Cite this article

Jin, L., Liu, X. Nonlinear Frequency Scaling Algorithm for High Squint Spotlight SAR Data Processing. EURASIP J. Adv. Signal Process. 2008, 657081 (2008). https://doi.org/10.1155/2008/657081

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1155/2008/657081

Keywords