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Proceedings Paper

Current status of the global change observation mission - water SHIZUKU (GCOM-W) and the advanced microwave scanning radiometer 2 (AMSR2) (Conference Presentation)
Author(s): Takashi Maeda; Misako Kachi; Marehito Kasahara

Paper Abstract

Japan Aerospace Exploration Agency (JAXA) launched the Global Change Observation Mission - Water (GCOM-W) or “SHIZUKU” in 18 May 2012 (JST) from JAXA’s Tanegashima Space Center. The GCOM-W satellite joins to NASA’s A-train orbit since June 2012, and its observation is ongoing. The GCOM-W satellite carries the Advanced Microwave Scanning Radiometer 2 (AMSR2). The AMSR2 is a multi-frequency, total-power microwave radiometer system with dual polarization channels for all frequency bands, and successor microwave radiometer to the Advanced Microwave Scanning Radiometer for EOS (AMSR-E) loaded on the NASA's Aqua satellite. The AMSR-E kept observation in the slower rotation speed (2 rotations per minute) for cross-calibration with AMSR2 since December 2012, its operation ended in December 2015. The AMSR2 is designed almost similarly as the AMSR-E. The AMSR2 has a conical scanning system with large-size offset parabolic antenna, a feed horn cluster to realize multi-frequency observation, and an external calibration system with two temperature standards. However, some important improvements are made. For example, the main reflector size of the AMSR2 is expanded to 2.0 m to observe the Earth's surface in higher spatial resolution, and 7.3-GHz channel is newly added to detect radio frequency interferences at 6.9 GHz. In this paper, we present a recent topic for the AMSR2 (i.e., RFI detection performances) and the current operation status of the AMSR2.

Paper Details

Date Published: 14 December 2016
PDF: 1 pages
Proc. SPIE 10000, Sensors, Systems, and Next-Generation Satellites XX, 1000004 (14 December 2016); doi: 10.1117/12.2241980
Show Author Affiliations
Takashi Maeda, Japan Aerospace Exploration Agency (Japan)
Misako Kachi, Japan Aerospace Exploration Agency (Japan)
Marehito Kasahara, Japan Aerospace Exploration Agency (Japan)

Published in SPIE Proceedings Vol. 10000:
Sensors, Systems, and Next-Generation Satellites XX
Roland Meynart; Steven P. Neeck; Toshiyoshi Kimura, Editor(s)

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