Small mover target detection in synthetic aperture radar imagery

Patent · Tue Apr 09 04:00:00 EDT 2019

OSTI ID:1568177

Simonson, Katherine M.; Perkins, David Nikolaus; Brooks, Jeffrey A.; West, Roger Derek; Lizarraga, Ivan; Strosnick, Matthew; Torgesen, David A.

The various technologies presented herein relate to detecting small moving entities or targets in radar imagery. Two SAR images can be captured for a common scene, wherein the scene is imaged twice from the same flight path. The first image is captured at a first instance and the second image is captured at a second instance, and differences between the two images are determined using a complex SAR change measure, excess coherency factor or DeltaC, based in part upon quantification of incoherent (or magnitude) change between the two images. A plurality of operations are performed to enable extraction of coherent change measures relating to the small moving entities from measures relating to large objects, stationary reflective structures, radar focusing artifacts, etc.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• Assignee: National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
• Patent Number(s): 10,254,399
• Application Number: 14/957,394
• OSTI ID: 1568177
• Country of Publication: United States
• Language: English