@article{M91F70274,
title = "Review on High Resolution Wide Swath SAR System Using Frequency Scanning",
journal = "The Journal of Korean Institute of Communications and Information Sciences",
year = "2025",
issn = "1226-4717",
doi = "10.7840/kics.2025.50.10.1617",
author = "Jungbin Yim, Donghyun Kim, Inmo Ban, Namyoon Lee",
keywords = "high resolution wide swath SAR, beam squint, frequency scanning",
abstract = "A key research topic in spaceborne synthetic aperture radar (SAR) systems is the development of high-resolution wide-swath (HRWS) imaging techniques that overcome the fundamental trade-off between image resolution and swath width. In general, achieving high resolution in SAR systems requires a high pulse repetition frequency (PRF), whereas wide-swath observation necessitates a lower PRF. To address this inherent limitation, various SAR techniques have been proposed. Among them, representative approaches for HRWS imaging include scanning on receive (SCORE) and frequency scanning (F-scan). This paper provides a tutorial overview of the valid PRF range for SAR image formation and illustrates the trade-off between resolution and swath width. Furthermore, it introduces the frequency scanning technique as a promising solution to this trade-off and demonstrates its effectiveness through simulation results."
}