JERS 1

Japanese Earth Resource Sensing satellite, also called Fuyo 1

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General

Designation	21867 / 92007A
Launch date	11 Feb 1992 at 01:50 UT
Country of origin	Japan
Mission	Remote sensing
Perigee/Apogee	567/568 km
Inclination	97.7°
Period	96 min
Launch vehicle	H1
Mass at launch	1340 kg

Had problems to open out its SAR antenna that were solved. Is working with 1 third of its power (4000 W instead of 12) thus the performance is not maximum

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End of life

Out of service	11 Oct 1998
Cause	malfunction in its attitude control system or power supply system
Decay	3 Dec 2001

sat-index articles

Technical data

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Specifications

Prime contractor	Mitsubishi
Mass at launch	1400 kg
Length	0.93 m
Width	1.83 m
Height	3.16 m
Solar array	7 x 3.5 m
SAR Antenna	11.9 x 2.4 m
Stabilization	3-axis
Design lifetime	2 years

Downlink: 2220 MHz

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SAR (Synthetic Aperture Radar)

Frequency	1.3 GHz (L-band)
Resolution	18 x 18 m
Swath width	75 km

Mission: high resolution monitoring of land use and type, glacier extent, snow cover, surface topography, ocean currents and waves.

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OPS (Optical Scanner)

Wavebands	0.52-0.6 µm (visible) 0.63-0.69 µm (visible) 0.76-0.96 µm (near IR) 1.6-1.7 µm (near IR) 2.0-2.4 µm (near IR)
Resolution	18 x 24 m
Swath width	75 km

Mission: pollution monitoring in oceans and lakes, land use classification, cloud and snow discrimination.

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