observer-target range
1observer-target range — The distance along an imaginary straight line from the observer or spotter to the target …
2range finder — any of various instruments for determining the distance of a target or object from an observer, or from a gun, camera, etc.: also rangefinder n …
3range finder — any of various instruments for determining the distance from the observer to a particular object, as for sighting a gun or adjusting the focus of a camera. Also, rangefinder. [1870 75] * * * Instrument used to measure the distance from the… …
4range finder — noun a measuring instrument (acoustic or optical or electronic) for finding the distance of an object • Syn: ↑rangefinder • Hypernyms: ↑measuring instrument, ↑measuring system, ↑measuring device * * * noun 1 …
5target of opportunity — A target visible to a surface or air sensor or observer, which is within range of available weapons and against which fire has not been scheduled or requested. See also target …
6Artillery observer — An artillery observer is a soldier responsible for directing artillery fire and close air support (ground attack by aircraft) onto enemy positions. Because artillery is an indirect fire weapon system, the guns are rarely in line of sight of their …
7Long Range Surveillance — Long Range Surveillance, or LRS (pronounced lurse ) units (LRSU S), are specially employed elite surveillance units of the United States Army that are utilized by Military Intelligence (Example: 313th Military Intelligence Battalion, 82nd… …
8Mathematical discussion of rangekeeping — In naval gunnery, when long range guns became available, an enemy ship would move some distance after the shells were fired. It became necessary to figure out where the enemy ship, the target, was going to be when the shells arrived. The process… …
9Chevrolet Volt — Manufacturer Chevrolet division of General Motors Also called Holden Volt Opel Ampera Vauxhall Ampera …
10Parallax — For other uses, see Parallax (disambiguation). A simplified illustration of the parallax of an object against a distant background due to a perspective shift. When viewed from Viewpoint A , the object appears to be in front of the blue square.… …
