Overview

The data from MTSAT is rebroadcasted in two formats: High Resolution Imager Data (HiRID) and High Rate Information Transmission (HRIT). HRIT is the MTSAT transmission format. Different ingestor software will be required for the HRIT format. This chapter covers only the HiRID format, which is also known as the GMS-5 compatibility mode.

The MTSAT satellite provides one visible image channel and four IR channels. In the HiRID format, the visible channel is at 1.25 km resolution; the IR channels have a resolution of 5 km and provide split window, short wave IR and water vapor images. The SDI ingestor acquires this data and produces two McIDAS areas per ingest, a visible area and a 4-channel IR area. The navigation and calibration for these areas are taken from the signal telemetry in accordance with JMA documentation.

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