ALOS-2 initial results

Yukihiro Kankaku; Shinichi Suzuki; Masanobu Shimada

doi:10.1117/12.2194761

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12 October 2015 ALOS-2 initial results

Yukihiro Kankaku, Shinichi Suzuki, Masanobu Shimada

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Proceedings Volume 9639, Sensors, Systems, and Next-Generation Satellites XIX; 96390D (2015) https://doi.org/10.1117/12.2194761
Event: SPIE Remote Sensing, 2015, Toulouse, France

Abstract

The Advanced Land Observing Satellite-2 (ALOS-2) was launched from Tanegashima Space Center by H-IIA rocket successfully on 24th May 2014. ALOS-2 carries the Phased Array type L-band Synthetic Aperture Radar-2 (PALSAR-2) as the state-of-the-art L-band SAR system which succeeds to PALSAR onboard ALOS. PALSAR-2 uses almost whole bandwidth allocated for L-band active sensor of Earth Exploration Satellites Service specified by the Radio Regulation in order to realize the high resolution observation, and also, it transmits more than 6 kW power for lower Noise Equivalent Sigma Zero using 180 TRMs driven by Gallium Nitride (GaN) amplifier which is the first use in space. Furthermore, because ALOS-2 carries the SAR system only, PALSAR-2 antenna can be mounted under the satellite body. It enables to observe right-/left-looking observation by satellite maneuvering. And the high accuracy orbit control to maintain the satellite within 500 m radius tube against the reference orbit enables high coherence for the InSAR processing. Using these new technologies, ALOS-2 has been operating to fulfill the mission requirements such as disaster monitoring and so on. This document introduces the initial result of ALOS-2 from the first year operation.

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Yukihiro Kankaku, Shinichi Suzuki, and Masanobu Shimada "ALOS-2 initial results", Proc. SPIE 9639, Sensors, Systems, and Next-Generation Satellites XIX, 96390D (12 October 2015); https://doi.org/10.1117/12.2194761

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