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Instrument: MESSR : Multispectral Electronic Self-Scanning Radiometer
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A multi-spectral electronic self-scanning radiometer (MESSR) is an
electronic-scan-type radiometer which detects reflected solar rays from the
earth's surface in two visible bands and two near-infrared bands. It is
equipped with two camera systems that are parallel with the direction of flight
of the satellite. Each camera system is comprised of two optical units; one
for the visible range and the other for the near-infrared range. Each camera
system scans a width of 100 km of the earth surface at right angles to the
direction of flight of the satellite. When the two systems are used at the
same time, a width of 185 km can be scanned. Each has 2048 charge-coupled
devices (CCDs) for detection purposes, thus achieving a resolution of 50 m for
the earth's surface.
Wavelength/ micron
Frequency 0.51 - 0.59
0.61 - 0.69
0.72 - 0.80
0.80 - 1.10
Resolution 50m
Sensitivity/ 39dB
Swath 100Km
Application Fields
Band 1 Land: Plant distribution, Snow cover distribution
(0.51-0.59) Distribution of volcanic ash, Land usage
Ocean: Water quality of coastal sea areas and lakes,
Red tide, Geological shape at the bottom of the
sea in coastal areas ( with high transmission
Band 2 Land: Land usage, Geological structure, Plant
(0.61-0.69) distribution, Snow cover distribution,
Distribution of volcanic ash
Ocean: Water quality of coastal sea areas and lakes,
Red tide, Water vortex
Band 3 Land: Ground surface water, Moor, Water resources
(0.72-0.80) Geological structure, Plant distribution
Band 4 Land: Mapping of ground surface water and outer layer
(0.80-1.1) composition, Flood areas, Lakes and Ponds, Plant
Ocean: Ice distribution, Water boundaries
The MESSR has flown on the following NASDA satellites: MOS-1, and MOS-1b.
Contributed by:
Tasuku Tanaka, Earth Observation Program Office Director, Program Planning and
Management Department, National Space Development Agency of Japan Head Office,
Hamamatsu-cho, Minato-ku, Tokyo, Japan
Takeshi Osugi, Earth Observation Center Director, National Space Development
Agency of Japan, Ohashi Hatoyama-machi, Hiki-gun, Saitama pref, Japan

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