Current status of the global change observation mission - water SHIZUKU (GCOM-W) and the advanced microwave scanning radiometer 2 (AMSR2) (Conference Presentation)

Takashi Maeda; Misako Kachi; Marehito Kasahara

doi:10.1117/12.2241980

14 December 2016 Current status of the global change observation mission - water SHIZUKU (GCOM-W) and the advanced microwave scanning radiometer 2 (AMSR2) (Conference Presentation)

Takashi Maeda, Misako Kachi, Marehito Kasahara

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Proceedings Volume 10000, Sensors, Systems, and Next-Generation Satellites XX; 1000004 (2016) https://doi.org/10.1117/12.2241980
Event: SPIE Remote Sensing, 2016, Edinburgh, United Kingdom

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.

Conference Presentation

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Takashi Maeda, Misako Kachi, and Marehito Kasahara "Current status of the global change observation mission - water SHIZUKU (GCOM-W) and the advanced microwave scanning radiometer 2 (AMSR2) (Conference Presentation)", Proc. SPIE 10000, Sensors, Systems, and Next-Generation Satellites XX, 1000004 (14 December 2016); https://doi.org/10.1117/12.2241980

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KEYWORDS

Microwave radiation

Radiometry

Satellites

Aerospace engineering

Antennas

Calibration

Electromagnetic coupling

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