bottom echo signal

См. также в других словарях:

• Echo (phenomenon) — In audio signal processing and acoustics, an echo (plural echoes) is a reflection of sound, arriving at the listener some time after the direct sound. Typical examples are the echo produced by the bottom of a well, by a building, or by the walls… …   Wikipedia

• Echo sounding — pulses directed from the surface or from a submarine vertically down to measure the distance to the bottom by means of sound waves. HistoryAfter the disaster of the Titanic in 1912, the German physicist Alexander Behm conducted some research to… …   Wikipedia

• echo bubble — n. A sharp but temporary rise in stock prices that follows the collapse of a recent stock market bubble. Example Citations: Given where tech stocks are at the moment wheezing at a red light after a 17 month romp where will they go from here? Will …   New words

• echo sounder — a sonar device that sends a signal to the bottom of a body of water and back. Used to detect fish schools and to map the bottom as an image is displayed on a screen. Used in angling, it is also called a fish finder …   Dictionary of ichthyology

• Radar signal characteristics — A Radar System uses a Radio Frequency electromagnetic signal reflected from a target to determine information about that target. In any radar system, the signal transmitted and received will exhibit many of the characteristics described below.The …   Wikipedia

• Long delayed echo — Long delayed echos (LDEs) are radio echos which return to the sender several seconds after a radio transmission has occurred. Delays of longer than 2.7 seconds are considered LDEs. [http://www.arrl.org/news/features/2003/10/31/1/ ARRL, Radio… …   Wikipedia

• Radar — For other uses, see Radar (disambiguation). A long range radar antenna, known as ALTAIR, used to detect and track space objects in conjunction with ABM testing at the Ronald Reagan Test Site on Kwajalein Atoll …   Wikipedia

• beam — Synonyms and related words: AM signal, CRT spot, DM display, Doppler signal, FM signal, H beam, I beam, IF signal, IF video signal, IM display, RF amplifier, RF echoes, RF signal, RF stage, TV band, X ray, abutment, actinic ray, actinism,… …   Moby Thesaurus

• Handbell — Infobox Instrument name=Handbell classification= *Hand percussion *Idiophone range= related= *Bells *HandchimesA handbell is a bell designed to be rung by hand. To ring a handbell, a ringer grasps the bell by its slightly flexible handle mdash;… …   Wikipedia

• Sonar — This article is about underwater sound propagation. For atmospheric sounding, see SODAR. For other uses, see Sonar (disambiguation) …   Wikipedia

• Geophysical MASINT — is a branch of Measurement and Signature Intelligence (MASINT) that involves phenomena transmitted through the earth (ground, water, atmosphere) and manmade structures including emitted or reflected sounds, pressure waves, vibrations, and… …   Wikipedia