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Airborne Circularly Polarized Synthetic Aperture Radar
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing ( IF 5.5 ) Pub Date : 2021-01-01 , DOI: 10.1109/jstars.2020.3045032
Josaphat Tetuko Sri Sumantyo , Ming Yam Chua , Cahya Edi Santosa , Good Fried Panggabean , Tomoro Watanabe , Bambang Setiadi , Fransiskus Dwikoco Sri Sumantyo , Kengo Tsushima , Karna Sasmita , Agus Mardiyanto , Edy Supartono , Eko Tjipto Rahardjo , Gunawan Wibisono , Muh Aris Marfai , Retnadi Heru Jatmiko , h Sudaryatno , Taufik Hery Purwanto , Barandi Sapta Widartono , Muhammad Kamal , Daniele Perissin , Steven Gao , Koichi Ito

In this article, airborne broadband (maximum 400 MHz bandwidth) C-band circularly polarized synthetic aperture radar (SAR) is proposed and developed for further study on airborne compact polarized synthetic aperture radar (CP SAR) system using circular polarization. This article explains the scattering characteristic of circular polarization as the concept of circularly polarized SAR, system configuration, RF system and antenna, ground test, and flight test of circularly polarized SAR in Hinotori-C2 (Firebird-C2) mission onboard CN235MPA aircraft on 14 and 15 March 2018 at South Celebes, Indonesia. The result of the flight test depicts multipath full polarimetric circularly polarized images that show good performance of circularly polarized SAR and matched well to the result of the ground test of a multipolarized single pulse. The circularly polarized scattering clarification using trihedral, cylindrical, and omni corner reflectors (TCR, CCR, and OCR), assessment of circularly polarized image analysis, and image classification using the conventional axial ratio (AR), ellipticity (ϵ), and polarization ratio (ρ) are discussed. The proposed circularly polarized SAR will enrich the existing CP SAR systems and could be employed in further study of CP SAR calibration technique, also applications development for the environment and disaster monitoring using CP SAR.

中文翻译:

机载圆极化合成孔径雷达

本文提出并开发了机载宽带(最大400 MHz带宽)C波段圆极化合成孔径雷达(SAR),以进一步研究使用圆极化的机载紧凑型极化合成孔径雷达(CP SAR)系统。本文将圆极化散射特性作为圆极化SAR的概念、系统配置、射频系统和天线、地面测试、圆极化SAR在14架CN235MPA飞机上的Hinotori-C2(Firebird-C2)任务中的飞行测试进行解释和 2018 年 3 月 15 日在印度尼西亚南西里伯斯举行。飞行测试的结果描绘了多径全极化圆极化图像,显示出圆极化SAR的良好性能,并且与多极化单脉冲的地面测试结果很好地匹配。使用三面体、圆柱和全角反射器(TCR、CCR 和 OCR)的圆偏振散射澄清,圆偏振图像分析的评估,以及使用传统轴比 (AR)、椭圆率 (ϵ) 和偏振比的图像分类(ρ) 进行了讨论。所提出的圆极化SAR将丰富现有的CP SAR系统,可用于CP SAR校准技术的进一步研究,以及CP SAR环境和灾害监测的应用开发。
更新日期:2021-01-01
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