Artist's view of JERS-1 (image credit: JAXA)

JERS-1

JERS-1 SAR Summary

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 Japan Aerospace Exploration Agency (JAXA), aboard a Japanese H-1 launcher, to provide global and repetitive observations of the environment using techniques that allow imaging to take place 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.

Data Products

restricted data access agreement is required for researchers to get Level 0, Level 1, or SLC data.

Dataset Description:

  • SAR — synthetic aperture radar
  • 1992-1998
  • 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
Data Format:
  • CEOS — Level 0 and Level 1 framed

Downloadable Products:

  • 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

On Request — Contact User Support Office, uso@asf.alaska.edu

  • Complex (Single Look Complex)
  • Level 1 (amplitude imagery — even frames)

Coverage map showing JERS-1 data in the ASF archive

JERS-1 Technical Specs

Standard Mode
Frequency/wavelength:​ 1.3 GHz L-band
Polarization:​ HH
Spatial Resolution 18 m
Swath Width 75 km
Off-Nadir Angle 35°

How to Cite JERS-1 Data Retrieved from ASF DAAC

Cite 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.

Format Example
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.

How to Cite JERS-1 Imagery

Include credit with each image shown in publications such as journal papers, articles, presentations, posters, and websites.

Format Example
© JAXA [year of data acquisition] © JAXA 1994

JERS-1 Datasets and DOIs

Dataset DOI
L0_JERS-1 10.5067/CRIS7FUD12QF
L1_JERS-1 10.5067/P882O8BV02R2

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