• About ALOS PALSAR
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About ALOS PALSAR

Mission

From 2006 to 2011, PALSAR’s L-band synthetic aperture radar (SAR) yielded detailed, all-weather, day-and-night observation, as well as repeat-pass interferometry. PALSAR data are from multiple observation modes with variable polarization, resolution, swath width, and off-nadir angle.

PALSAR was one of three instruments on the Advanced Land Observing Satellite-1 (ALOS), also known as DAICHI, developed to contribute to the fields of mapping, precise regional land-coverage observation, disaster monitoring, and resource surveying. ALOS was a mission of the Japan Aerospace Exploration Agency (JAXA).

ASF PALSAR Products

ProductTypeFormatOpen Access
L1.0Unprocessed/rawn/aFind Data
L1.5Georeferenced amplitude imageCEOSFind Data
RTCRadiometrically and terrain-corrected geocoded GeoTIFF imageGeoTIFFFind Data

Note 1: L1.0 and L1.5 products may have originated from older JAXA processor versions.

Note 2: Users may request L1.1 data – if not already available through Vertex or the ASF API – by contacting our User Support Officeuso@asf.alaska.edu. Please provide a list of the granule names you wish to have processed.
L1.1 processing is not possible for data acquired in ScanSAR beam mode (WB1 and WB2).

How to Obtain PALSAR Data

Researchers can download open-access ALOS PALSAR data from the NASA-sponsored ASF DAAC.

PALSAR Technical Specs — Beam Modes

PALSAR has two fine beam modes: single polarization (FBS) and dual polarization (FBD), as well as quad polarization, also known as polarimetric mode (PLR). ScanSAR wide beam (WB1, WB2) operates with a considerable loss of resolution. See table below.

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