1. A system for tracking a cooperative, non-incandescent source, said system comprising: a pair of focal plane arrays; an optical imaging system configured to (i) collect a scene image of a scene within a field-of-view of said optical imaging system, the scene image including the cooperative non-incandescent source and background clutter, (ii) generate a first scene image over a first spectral band and a second scene image over a second spectral band, and (iii) image the first scene image onto a first focal plane array that generates first scene image frame data and the second scene image onto a second focal plane array that generates second scene image frame data; and a processing unit configured to process the first scene image frame data generated by the first focal plane array and the second scene image frame data generated by the second focal plane array to produce a resultant scene image frame that provides a differential between the magnitude of scene image frame data representative of the background clutter and the magnitude of scene image frame data representative of the cooperative, non-incandescent source.