ALOS-2 science program and high resolution SAR applications

M. Shimada; Yuji Osawa

doi:10.1117/12.979379

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9 November 2012 ALOS-2 science program and high resolution SAR applications

M. Shimada, Yuji Osawa

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Proceedings Volume 8528, Earth Observing Missions and Sensors: Development, Implementation, and Characterization II; 852812 (2012) https://doi.org/10.1117/12.979379
Event: SPIE Asia-Pacific Remote Sensing, 2012, Kyoto, Japan

Abstract

Advanced Land Observation Satellite-2 (ALOS-2) will be launched in Nov. 2013 carrying the L-band Synthetic Aperture Radar (PALSAR-2) to the low polar orbit of 628km height with 14-day revisit time. To the four mission objectives, i.e., disaster mitigation, environmental monitoring represented by the forest monitoring and cryospheric monitoring, land monitoring, and technology development, PALSAR-2 and ALOS-2 will provide the 1~3m high resolution Spotlight and Strip with multi polarization with an imaging swath of 50km, ScanSAR imaging with 350~490km swath with dual polarizations, shorter temporal baseline of 14 days and spatial baseline of within 1km, shorter time delay of less than 72 hours (74 hours in worst case) for emergency observation request to the disaster area, and almost all of global beam synchronization for ScanSAR Interferometry. ALOS-2 science program initiates the JAXA’s Calibration, Validation, Application researches of the PALSAR-2/ALOS-2 and Pi-SAR-L2. As the application research, the disaster mitigation and the urban area monitoring using the high resolution data should contribute significantly to the human society since the disasters occur frequently and globally. High resolution and multi polarimetric SAR with the shorter revisit time reserves the quicker detection of the land changes. In this presentation, we will summarize the contents of the ALOS-2 science program, its expected outcomes, and comparative study results with PALSAR. Some application examples of the disaster mitigation using the recent high resolution SARs, i.e., Pi-SAR-L2 and PALSAR will be also introduced.

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M. Shimada and Yuji Osawa "ALOS-2 science program and high resolution SAR applications", Proc. SPIE 8528, Earth Observing Missions and Sensors: Development, Implementation, and Characterization II, 852812 (9 November 2012); https://doi.org/10.1117/12.979379

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