This paper is derived from material used by DASD (ISR & Space) for release at open conferences but has been tailored to the agenda for the UAV session of the SPIE 1999 Airborne Reconnaissance Conference. This paper serves as an introduction and summary of operational UAVs. As a result of tailoring, the paper avoids overlapping with other conference papers or briefing materials.
Patrick K. Branch,
"Unmanned vehicles: mainstays of future airborne reconnaissance", Proc. SPIE 3751, Airborne Reconnaissance XXIII, (7 December 1999); doi: 10.1117/12.372638; https://doi.org/10.1117/12.372638