slant distance

slant distance

[′slant ‚dis·təns]
(navigation)
The straight-line distance between two points not at the same elevation as contrasted with ground distance, ground range, or the great-circle distance between the two positions. Also known as slant range.
References in periodicals archive ?
Flying at an altitude of approximately 12,000ft above ground level (AGL), and with a slant distance of more than 100 kilometers, AOptix successfully demonstrated a low-power, eye-safe, ultra-high bandwidth air-to-ground Free Space Optical (FSO) link.
DME is a navigational system which continuously provides slant distance information between the aircraft and airport providing greater reliability and accuracy.