To address the current national emergency, U.S. entities may be eligible to license select Sandia intellectual property at no cost for a limited time. Learn more.

Search/Browse Tech

Apparatus, system and method for highlighting activity-induced change in multi-pass synthetic aperture radar imagery

United States Patent

To discuss licensing opportunities, fill out our Contact Form 
10,698,104
June 30, 2020
View the Complete Patent at the US Patent & Trademark Office
Described herein are various technologies relating to constructing a differenced change product (DCP) image. A plurality of synthetic aperture radar (SAR) images of a scene are generated based upon radar signals directed towards and reflected off of the scene, and a plurality of coherence change detection (CCD) images of the scene are generated based upon the SAR images. The CCD images are registered with one another, and their pixel values re-scaled according to a monotonic mapping function. The DCP image is generated based upon a computed pixel-wise difference between a pair of the re-scaled CCD images. The DCP image identifies locations in the scene where human activity-induced change is likely to have occurred between a pair of SAR passes of the scene.
15/936,806
March 27, 2018
1/1;
G01S 13/90 (20060101); H01L 27/148 (20060101); G06T 5/50 (20060101);
STATEMENT OF GOVERNMENTAL INTEREST This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The U.S. Government has certain rights in the invention.