Best answers for Navigational aid – Crossword Clue

1. Definition: 1. a navigational system involving satellites and computers that can determine the latitude and longitude of a receiver on Earth by computing the time difference for signals from different satellites to reach the receiver

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1. Definition: 1. explore or survey for the purpose of making a map; "We haven't even begun to map the many galaxies that we know exist"

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1. Definition: 1. a measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return; "sonar is an acronym for sound navigation ranging"; "asdic is an acronym for antisubmarine detection investigation committee"

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1. Definition: 1. plan in detail; "Bush is charting a course to destroy Saddam Hussein"

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1. Definition: 1. measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects

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1. Definition: 1. A system of electronic navigation in which a vessel or aircraft determines its latitude and longitude by measuring the time differences between low frequency radio transmissions from two stationary transmitters (slaves) and a stationary master transmitter. Contrary to the name, Loran is a medium range system, usually effective for no more than a few hundred miles from shore. The first commercial system was called Loran A; the latest (and final) development is Loran C.

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1. Definition: 1. guide with a beacon

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1. Definition: 1. bring about; accomplish; "This writer attempts more than his talents can compass"

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1. Definition: 1. guiding star; a star that is used as a reference point in navigation or astronomy

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