DARPA are seeking bids for a high resolution three-dimensional battlefield surveillance system. The so-called Fine Detail Optical Surveillance (FDOS) program
is looking to develop “a fundamentally new optical ISR capability that
can provide ultra high-resolution 3D images for rapid, in-field
identification of a diverse set of targets… for use in an active
battlefield or hostile environments with designs tailored to allow for
soldier portable applications as well as UAV integration.”
As Wired maagazine points out, the Pentagon are already deep into a virtual 3D surveillance scheme, the evily-named Gorgon Stare, that involves 12 cameras attached to Reaper drones, and DARPA already have another development programme called Autonomous Real-time Ground Ubiquitous Surveillance – Imaging System (ARGUS-IS), which involves “a 1.8 Gigapixels video sensor”. There’s more details here.