Development of a Truck-Mounted Arc-Scanning Synthetic Aperture Radar

被引：58
作者：
Lee, Hoonyol [1 ]
Lee, Jae-Hee [1 ,2 ]
Kim, Kwang-Eun [2 ]
Sung, Nak-Hoon [2 ]
Cho, Seong-Jun [2 ]
机构：
[1] Kangwon Natl Univ, Dept Geophys, Chunchon 200701, South Korea
[2] Korea Inst Geosci & Mineral Resources, Taejon 305350, South Korea
来源：
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2014年 / 52卷 / 05期
关键词：
Arc-scanning synthetic aperture radar (ArcSAR); range Doppler algorithm; SAR; scan mode; spot mode; time domain algorithm; GROUND-BASED SAR; SYSTEM; INTERFEROMETRY; LANDSLIDE;
D O I：
10.1109/TGRS.2013.2265700
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
This paper presents the development of a ground-based arc-scanning synthetic aperture radar (ArcSAR) system mounted on a truck. ArcSAR formulates synthetic aperture by a horizontal circular motion of antennas attached at the end of an extendable boom. The ArcSAR system is designed to operate in two different imaging modes: the spot mode and the scan mode. The spot mode obtains a high-resolution image by fixing the view angle of antennas toward a target. The scan mode obtains wider image coverage with a reduced resolution by fixing the antennas relative to the boom. Different SAR focusing algorithms were implemented for the accuracy and efficiency of image processing: the time domain algorithm for the spot mode and the range Doppler algorithm for the scan mode. An exemplary X-band ArcSAR spot mode image, obtained with a 180 degrees scanning of 4-m boom, has an azimuth resolution of 0.07 degrees, which is equivalent to the 12.6-m linear scanning of a conventional ground-based SAR system. An ArcSAR scan mode image was successfully obtained as well, covering a 350 degrees image area at an azimuth resolution of 1.07 degrees, which is 11 times better than that of arc-scanning real aperture radar that would have 11.84 degrees azimuth resolution.
引用
收藏
页码：2773 / 2779
页数：7
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