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position fixing accuracy

См. также в других словарях:

  • Fix (position) — A position fix or simply a fix is a term used in position fixing in navigation to describe a position derived from measuring external reference points. The term is generally used only with manual or visual techniques such as the use of… …   Wikipedia

  • Decca Navigator System — D …   Wikipedia

  • surveying — /seuhr vay ing/, n. 1. the science or scientific method of making surveys of land. 2. the occupation of one who makes land surveys. 3. the act of one who surveys: The surveying required nearly two days. [1425 75; late ME: act of examining… …   Universalium

  • Real-time locating — Articleissues confusing=July 2008 refimprove=May 2008 essay=May 2008: This page specifically concerns operational aspects of RTLS. For methodology issues see locating engine. For technology issues see wireless. According to ISO/IEC JTC1 SC31 and… …   Wikipedia

  • Navigation — This article is about determination of position and direction on or above the surface of the earth. For other uses, see Navigation (disambiguation). Table of geography, hydrography, and navigation, from the 1728 Cyclopaedia. Navigation is the… …   Wikipedia

  • navigation — navigational, adj. /nav i gay sheuhn/, n. 1. the act or process of navigating. 2. the art or science of plotting, ascertaining, or directing the course of a ship, aircraft, or guided missile. [1520 30; < L navigation (s. of navigatio) a voyage.… …   Universalium

  • undersea exploration — Introduction       the investigation and description of the ocean waters and the seafloor and of the Earth beneath. Primary objectives and accomplishments       Included in the scope of undersea exploration are the physical and chemical… …   Universalium

  • Celestial navigation — Celestial navigation, also known as astronavigation, is a position fixing technique that was devised to help sailors cross the featureless oceans without having to rely on dead reckoning to enable them to strike land. Celestial navigation uses… …   Wikipedia

  • Celestial mechanics — is the branch of astrophysics that deals with the motions of celestial objects. The field applies principles of physics, historically classical mechanics, to astronomical objects such as stars and planets to produce ephemeris data. Orbital… …   Wikipedia

  • Underwater archaeology — is the study of past human life, behaviours and cultures using the physical remains found in salt or fresh water or buried beneath water logged sedimentMuckelroy, K., Maritime archaeology. Cambridge University Press 1978. ISBN 0 521 29348 0] . It …   Wikipedia

  • Plessey — The Plessey Company plc was a British based international electronics, defence and telecommunications company. It originated in 1917, growing and diversifying into electronics. It expanded after the second world war by acquisition of companies… …   Wikipedia

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