Description

The JERS-1 (Japanese Earth Resources Satellite) Synthetic Aperture Radar (SAR) is a high-resolution, all-weather imaging radar. JERS-1 was launched by the Japan Aerospace Exploration Agency (JAXA), aboard a Japanese H-1 launcher. Its Global Forest Mapping Program mapped important forests of the world: Southeast Asia, Africa, Central America, South America (Amazon Basin), and Boreal North America. ASF distributes the Amazon and Boreal forest SAR mosaics.

Dataset Property	Value
Temporal Coverage	1992 - 1998
Repeat Cycle	44 days
Spatial Coverage	Imagery coverage is worldwide Datapool contains ASF standard beam odd frames, as well as the first and last frame of each imaged swath Mosaics of global rainforests and the boreal forest
Center Frequency	1.3 GHz L-band
Polarization	HH
Spatial Resolution	18 m
Swath Width	75 km
Off-Nadir Angle	35°
File format	CEOS — Level 0 and Level 1 framed
Provider	JAXA
Date published:	1992

Mission

The JERS-1 (Japanese Earth Resources Satellite) SAR is a high-resolution, all-weather imaging radar. Its primary objective was gathering data on global land masses while conducting observation for land surveys, agriculture, forestry, fisheries, environmental protection, disaster prevention, and coastal surveillance.

Launch

JERS-1 was launched by the National Space Development Agency of Japan (NASDA) aboard a Japanese H-1 launcher, to provide global and repetitive observations of the environment using techniques that allow imaging to occur in all weather conditions.

Achievement

The JERS-1 Global Forest Mapping Program mapped important forests of the world: Southeast Asia, Africa, Central America, South America (Amazon Basin), and Boreal North America. ASF distributes the Amazon and Boreal forest SAR mosaics.

Downloadable Products

The Level 0 and Level 1 products are restricted datasets, and researchers must have permission to download data. Researchers must currently be living in the United States. For information, contact the User Support Office.

Level 0 (Unprocessed/Raw Data)

Level 1 (amplitude imagery — processed images)

Mosaics — open access

Amazon Low Flood
Amazon High Flood
North America Winter Texture
North America Summer Texture
North America Summer Backscatter

Product Summary

Platforms

JERS-1

Instruments

NASA-ISRO Synthetic Aperture Radar L-Band (L-SAR)

Spatial Extent

90.0°, -180.0°, -90.0°, 180.0°

Geographic Region

Global

Temporal Extent

1992-05-20 to 1998-10-11

Temporal Resolution

44 days

Data Partner

National Space Development Agency of Japan (NASDA)

Japanese Aerospace Exploration Agency (JAXA)

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use Policy.

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Data Center Citation

Dataset Product	How to Credit	Format	Example
JERS-1 Data	Credit use of data in publications such as journal papers, articles, presentations, posters, and websites. Please send copies of, or links to, published works citing data, imagery, or tools accessed through ASF to uso@asf.alaska.edu with “New Publication” on subject line.	Dataset: JERS-1, JAXA [year of data acquisition]. Retrieved from ASF DAAC [day month year of data access].	Dataset: JERS-1, JAXA 1994. Retrieved from ASF DAAC 21 June 2015.
JERS-1 Imagery	Include credit with each image shown in publications such as journal papers, articles, presentations, posters, and websites.	© JAXA [year of data acquisition]	© JAXA 1994

Known Issues

The Level 0 and Level 1 products are restricted datasets, and researchers must have permission to download data. Researchers must currently be living in the United States. For information, contact the User Support Office.

JERS-1 (Japanese Earth Resources Satellite-1)

Data at a Glance