| Abstract: | 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. |