This page no longer updated from 31 October 2001. Latest version can be found at www.astronautix.com

astronautix.com JERS


Other Designations: Japanese Earth Resources Satellite. Class: Earth. Type: Landsat. Nation: Japan. Agency: NASDA . Manufacturer: Mitsubishi Electric Co. (MELCO).

JERS-1 (Japanese Research Satellite-1; FUYO-1) is Japan's second Earth observation satellite. To verify functions and performance of optical sensors and a Synthetic Aperture Radar and to establish an integrated system for observing the Earth's resources; to perform observations and measurements for land survey, agriculture, forestry, fishery, environmental preservation, disaster prevention and coastal surveillance. Launch time 0150 GMT. Launching organization NASDA. It is designed to provide global, all-weather imaging capability for agriculture, forestry, fishery, environmental protection, and disaster protection use. Some data will be also shared with the University of Alaska for research uses. Spacecraft: 3-axis stabilised, zero momentum bias system with magnetotorquers, reaction wheels. Earth, sun sensors provide 0.3 deg attitude knowledge. Hydrazine propulsion system.72 Gbit solid state recorder. Single solar panel is 3.4 m x 8 m and provides 2050W BOL.4 30 Ahr NiCd batteries. Payload: SAR (Synthetic Aperture Radar) is L-band using HH polarisation with a 35 deg look angle. The SAR has 18 m resolution (3 looks) with a 75 km swath and uses a corporate feed antenna 11.9 m x 2.4 m. Optical Sensor (OPS) can observe in 7 bands from visible to short wave infrared with stereoscopic imaging by a forward look of 15.3 deg, and provides 18 m resolution.


Specification

Total Length: 3.1 m. Maximum Diameter: 1.8 m. Total Mass: 1,340 kg.


JERS Chronology


11 February 1992 JERS-1 Launch Site: Tanegashima . Launch Vehicle: H-1. Mass: 1,340 kg. Perigee: 567 km. Apogee: 568 km. Inclination: 97.7 deg.

Japanese Research Satellite-1. JERS-1 (FUYO-1). To verify functions and performance of optical sensors and a Synthetic Aperture Radar and to establish an integrated system for observing the Earth's resources; to perform observations and measurements for land survey, agriculture, forest ry, fishery, environmental preservation, disaster prevention and coastal surveillance. Launch time 0150 GMT. Launching organization NASDA. The Japanese Fuyo-1 (ERS-1) satellite failed on Oct 12, 1998 after six years of operation.



Bibliography:



Back to Index
Last update 12 March 2001.
Contact Mark Wade with any corrections or comments.
Conditions for use of drawings, pictures, or other materials from this site..
© Mark Wade, 2001 .