Please ensure Javascript is enabled for purposes of website accessibility

SAR Data Sets

Data Sets supported and hosted by the Alaska Satellite Facility

Seasat – Technical Challenges – 3. Decoded Data Analysis

With the Seasat archives decoded into range line format along with an auxiliary header file full of metadata, the next step is to focus the data into synthetic aperture radar (SAR) imagery. Focusing is the transformation of raw signal data into a spatial image. Unfortunately, pervasive bit errors, data drop outs, partial lines, discontinuities and …

Seasat – Technical Challenges – 3. Decoded Data Analysis Read More »

Seasat – Technical Challenges – 10. Quality Issues

After the decoding, cleaning and focusing of the Seasat SAR data, many artifacts still exist in the initial ASF Seasat SAR products. Most of the artifacts observed in the images result from system interferences during data acquisition, missing data as a result of multiple transcriptions between media storage since 1978, and processing decisions implemented in the ASF Seasat Processing System. ASF’s intent is to distribute as much of the historic dataset as possible to our users while offering transparency about known quality issues.

SMAP – Instrument

Soil Moisture Passive Active (SMAP) is a remote-sensing observatory with two instruments — a synthetic aperture radar (SAR) and a radiometer — that map soil moisture and determine the freeze or thaw state of the area being mapped.

SMAP – Handbook

“A rare characteristic of the SMAP Project is its emphasis on serving both basic Earth System science as well as applications in operational and practice-oriented communities.” Download Handbook Contents of Full Handbook 1. Introduction and Background 2. Mission Overview 3. Instrument Design and L1 Data Products 4. Soil Moisture Data Products 5. Value-Added L4_SM Soil …

SMAP – Handbook Read More »

Global Inter-agency IPY Polar Snapshot Year

The documents listed here discuss the requirements to obtain spaceborne snapshots of the Polar Regions and key high latitude processes. Documents have been prepared by the international cryospheric community under the auspices of the approved IPY project titled the Global Inter-agency IPY Polar Snapshot Year (GIIPSY).

URS Login