Development of Synthetic Aperture Radar onboard Aircraft and Microsatellite for Global Land Deformation Observation

• Main Authors: JOSAPHAT, Tetuko Sri Sumantyo, IMURA, Nobuyoshi, TRIHARJANTO, Robertus Heru, ヨサファット, テトォコ スリ スマンティヨ, 井村, 信義
• Format: Conference Object
• Language: English
• Published: Chiba University. Center for Environmental Remote Sensing 2016
• Subjects: Arctic; Antarctic; Ari; Antarc*
• Online Access: http://opac.ll.chiba-u.jp/da/curator/107921/; http://opac.ll.chiba-u.jp/da/curator/107921/ceresIntlSympo-24-P884.pdf

[ABSTRACT]Synthetic Aperture Radar (SAR) is well-known as a multi-purpose sensor that can be operated in all-weather and day-night time. As our laboratory roadmap for microsatellite, aircraft, and unmanned aerial vehicle development, our laboratory develops synthetic aperture radar (SAR), especially Circularly Polarized Synthetic Aperture Radar or Elliptically Polarized Synthetic Aperture Radar (CP-SAR or EP-SAR, Patent Pending 2014-214905) to monitor global land deformation. The sensor is designed to transmit and receive left-handed circular polarization (LHCP) and right-handed circular polarization (RHCP). For this purpose, we also develop unmanned aerial vehicle (UAV) for ground experiment of this sensor. The main mission of CP-SAR is to hold the basic research on elliptically polarized scattering and its application developments. In the basic research, we will investigate the elliptical (including circular and linear polarizations) scattering wave from the land surface, generation of axial ratio image (ARI), ellipticity and tilted angle images etc. We will hold the analysis and experiment of circularly polarized wave scattering on vegetation, snow, ice, soil, rock, sand, grass etc to investigate the elliptical scattering wave. These images will be extracted by using the received RHCP and LHCP wave. CP-SAR sensor transmits only one polarization, RHCP or LCHP, then this sensor will receive RHCP and LHCP scattering waves simultaneously. The image is employed to investigate the relationship between the physical characteristics of vegetation, soils, snow etc. The image of tilted angle as the response of land surface also will be extracted to mapping the physical information of the surface, i.e. geological matters etc. In application development, CP-SAR sensor will be implemented for land cover mapping, disaster monitoring, Cryosphere monitoring, oceanographic monitoring etc. Especially, land cover mapping will classify the forest and non-forest area, estimation of tree trunk height, mangrove area monitoring, Arctic and Antarctic environment monitoring etc. In disaster monitoring, CP-SAR sensor will be employed for monitoring of earthquake area, volcano activity, landslide etc. This paper introduces progress on development of our SAR onboard Boeing 737-200 aircraft and microsatellite.