The AIRSAR automated, Web-based data processing and distribution system is an integrated, end-to-end synthetic aperture radar (SAR) processing system. Designed to function under limited resources and rigorous demands, AIRSAR eliminates operational errors and provides for paperless archiving. Also, it provides a yearly tune-up of the processor on flight missions, as well as quality assurance with new radar modes and anomalous data compensation.

The software fully integrates a Web-based SAR data-user request subsystem, a data processing system to automatically generate co-registered multi-frequency images from both polarimetric and interferometric data collection modes in 80/40/20 MHz bandwidth, an automated verification quality assurance subsystem, and an automatic data distribution system for use in the remote-sensor community. Features include Survey Automation Processing in which the software can automatically generate a quick-look image from an entire 90-GB SAR raw data 32-MB/s tape overnight without operator intervention. Also, the software allows product ordering and distribution via a Web-based user request system.

To make AIRSAR more user friendly, it has been designed to let users search by entering the desired mission flight line (Missions Searching), or to search for any mission flight line by entering the desired latitude and longitude (Map Searching). For precision image automation processing, the software generates the products according to each data processing request stored in the database via a Queue management system. Users are able to have automatic generation of coregistered multi-frequency images as the software generates polarimetric and/or interferometric SAR data processing in ground and/or slant projection according to user processing requests for one of the 12 radar modes.

This program was written by Anhua Chu, Jakob Van Zyl, Yunjin Kim, Scott Hensley, Yunling Lou, Soren Madsen, Bruce Chapman, David Imel, and Stephen Durden of Caltech, and Wayne Tung of Columbus Technologies and Services, Inc. for NASA's Jet Propulsion Laboratory. For more information, download the Technical Support Package (free white paper) at under the Software category.

This software is available for commercial licensing. Please contact Karina Edmonds of the California Institute of Technology at (626) 395-2322. Refer to NPO-40998.

This Brief includes a Technical Support Package (TSP).
AIRSAR Web-Based Data Processing

(reference NPO-40998) is currently available for download from the TSP library.

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NASA Tech Briefs Magazine

This article first appeared in the March, 2007 issue of NASA Tech Briefs Magazine.

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