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SPACEBORNE TOPS SAR SYSTEM MODELING AND PERFORMANCE ANALYSIS  

Kang, Seo-Li (한국항공대학교 항공전자공학과 위성전자시스템연구실)
Song, Jeong-Hwan (한국항공대학교 항공전자공학과 위성전자시스템연구실)
Kim, Bum-Seung (한국항공대학교 항공전자공학과 위성전자시스템연구실)
Kim, Hyeon-Cheol (한국항공대학교 항공전자공학과 위성전자시스템연구실)
Lee, Woo-Kyung (한국항공대학교 항공전자공학과 위성전자시스템연구실)
Publication Information
Journal of Satellite, Information and Communications / v.9, no.2, 2014 , pp. 74-79 More about this Journal
Abstract
Conventional ScanSAR mode has been adopted in Envisat or Radarsat and played an important role to acquire wide swath SAR images for environmental surveillance. However, it suffers from the undesirable scalloping effect caused by non-homogeneity of antenna pattern while the image resolution is sacrificed. In recent years, TOPS mode has been suggested and put into use to overcome the disadvantages of the conventional scanning mode. Although TOPS mode is able to produce wide-swath SAR image in a short time interval, it demands highly complicated system design knowledge. In this paper, we present the operation principle of TOPS mode and a full SAR simulation is performed to generate TOPS SAR raw data. Azimuth antenna pattern is modified during TOPS mode operation and it is shown that the undesired scalloping effect is suppressed in the generated SAR image.
Keywords
SAR(Synthetic Aperture Radar); TOPS(Terrain Observation by Progressive SAR) mode; Wide-swath coverage; Scanning mode;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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