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 anomalous change in multi-pass synthetic aperture radar imagery

United States Patent

To discuss licensing opportunities, fill out our Contact Form 
10,535,127
January 14, 2020
View the Complete Patent at the US Patent & Trademark Office
Described herein are various technologies relating to constructing a statistically-normalized coherence (SNC) 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 mean and variance are computed on a pixel-wise basis. A new CCD image is subsequently received, and registered with the plurality of CCD images. The SNC image is generated based upon the computed mean and variance values for each pixel in the registered CCD images, and further based upon values of pixels in the new CCD image. The SNC image identifies locations in the scene where anomalous activity is represented in the new CCD image.
15/812,238
November 14, 2017
1/1;
G06T 7/00 (20170101); G01S 13/90 (20060101); G06T 7/33 (20170101);
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.