airborne profile recorder


Also found in: Acronyms.

airborne profile recorder

[′er‚bȯrn ′prō‚fīl ri‚kȯrd·ər]
(engineering)
An electronic instrument that emits a pulsed-type radar signal from an aircraft to measure vertical distances between the aircraft and the earth's surface. Abbreviated APR. Also known as terrain profile recorder (TPR).
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