Sliding spotlight mode imaging with GF-3 spaceborne SAR sensor

Qingjun Zhang, Feng Xiao, Zegang Ding*, Meng Ke, Tao Zeng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Synthetic aperture radar (SAR) sliding spotlight work mode can achieve high resolutions and wide swath (HRWS) simultaneously by steering the radar antenna beam. This paper aims to obtain well focused images using sliding spotlight mode with the Chinese Gaofen-3 SAR sensor. We proposed an integrated imaging scheme with sliding spotlight echoes. In the imaging scheme, the two-step approach is applied to the spaceborne sliding spotlight SAR imaging algorithm, followed by the Doppler parameter estimation algorithm. The azimuth spectral folding phenomenon is overcome by the two-step approach. The results demonstrate a high Doppler parameter estimation accuracy. The proposed imaging process is accurate and highly efficient for sliding spotlight SAR mode.

Original languageEnglish
Article number43
JournalSensors
Volume18
Issue number1
DOIs
Publication statusPublished - Jan 2018

Keywords

  • Doppler parameter estimation
  • Sliding spotlight
  • Synthetic aperture radar (SAR)
  • Two-step processing approach

Fingerprint

Dive into the research topics of 'Sliding spotlight mode imaging with GF-3 spaceborne SAR sensor'. Together they form a unique fingerprint.

Cite this

Zhang, Q., Xiao, F., Ding, Z., Ke, M., & Zeng, T. (2018). Sliding spotlight mode imaging with GF-3 spaceborne SAR sensor. Sensors, 18(1), Article 43. https://doi.org/10.3390/s18010043