Historical information
The Airborne profile Recorder (APR) is a precise airborne radar altimeter designed to provide a continuous record of terrain clearance, (the distance between the aircraft and the ground surface). This document was condensed from a report by Captain E P Constantine RASvy Corps to test the viability of using APR for acquiring height information for mapping purposes. This document was on forwarded to the ExFortuna Survey Assoc by 4 Fd Svy Sqn in Aug 2025.
Physical description
21 x pages of typed text and diagrams on letter sized paper, stapled top left corner. Three and four hole punched.