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Seasat

Seasat Rediscovered: ASF DAAC Imagery from 1978 Data

Launched by NASA in 1978, the Seasat satellite’s primary mission was to observe oceans using NASA’s first synthetic aperture radar (SAR) sensor. SAR bounces a microwave radar signal off the surface of Earth to detect physical properties. Unlike optical photo technology, SAR can see through darkness, clouds, and rain.

Through the use of SAR, the Seasat satellite collected an enormous amount of data for its time. This data has been processed by the Alaska Satellite Facility, a NASA Distributed Active Archive Center (DAAC), into digital imagery that allows scientists to measure features of the planet’s surface over time.

ASF is a NASA Distributed Active Archive Center (DAAC) specializing in synthetic aperture radar data.

Seasat – Product Specification Guide

During its brief 106-days of lifetime, the Seasat-1 spacecraft, launched on June 28, 1978, by NASA’s Jet Propulsion Laboratory (JPL), collected information on sea-surface winds, sea-surface temperatures, wave heights, internal waves, atmospheric water, sea ice features, ice sheet topography, and ocean topography….

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Seasat – References

View Seasat technical reports, general references, and publications focused on Seasat data processing, oceans, snow and ice, and land applications….

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Seasat – Technical Challenges – 9. From Swaths to Products

At this stage in the development of the ASF Seasat Processing System (ASPS): 1,346 cleaned raw signal swaths were created; ROI was modified to handle Seasat offset video format; New state vectors were selected for use over two-line elements (TLE’s); Caltones were filtered from the range power spectra; Data window position files were created…

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