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Advanced Land Observing Satellite-2 (ALOS-2) is a next-generation Japanese L-band SAR satellite. Since one of an important mission of ALOS-2 is a global monitoring, a capability of wider coverage is required. On the contrary, in the point of disaster monitoring, higher spatial resolution is essential. To comply with such a contradictive requirement of wide swath and high resolution, ALOS-2 utilizes a dual-receive channel (DRC) technique, and achieved a coverage area of up to 50km with a spatial resolution of down to 3m. For a wider coverage of polarimetric observation, ALOS-2 installs the fully redundant and “quad-receive channel” system to full-polarimetric mode, achieving a maximum coverage of 50km at 6m resolution. As an experimental mode, new polarimetric mode called “compact polarimetry” is installed for a wide coverage of polarimetric observation. [ABSTRACT FROM PUBLISHER]

ASNARO-2 is a small size Japanese earth observation satellite, which carries a newly developed X-band SAR mission system. Although the SAR mission system is light-weight and low cost system, its specification is not far behind from large satellite. It has the high resolution and wide swath. The performance of NESZ (Noise Equivalent Sigma Zero), which is less than the conventional high-spec satellite, is also a sufficient image quality. It is expected that ASNARO-2 can be more available for many users [ABSTRACT FROM PUBLISHER]