sonar

(redirected from Lfas)
Also found in: Thesaurus, Acronyms, Encyclopedia.

so·nar

 (sō′när′)
n.
1. A system using transmitted and reflected underwater sound waves to detect and locate submerged objects or measure the distance to the floor of a body of water.
2. An apparatus, as one in a submarine, using sonar.
3. Echolocation.

[so(und) na(vigation and) r(anging).]

sonar

(ˈsəʊnɑː)
n
(Electronics) a communication and position-finding device used in underwater navigation and target detection using echolocation
[C20: from so(und) na(vigation and) r(anging)]

so•nar

(ˈsoʊ nɑr)

n.
1. a method for detecting and locating objects submerged in water by echolocation.
2. the apparatus used in sonar.
[1940–45; so(und)na(vigation)r(anging)]
click for a larger image
sonar
An electrical impulse is converted into sound waves that are transmitted underwater. The sound waves are reflected off objects in their paths, creating echoes that return to the vessel and are picked up by the sonar equipment.

so·nar

(sō′när′)
1. A method of detecting and locating underwater objects, such as submarines or schools of fish, through the use of reflected sound waves. Because the speed of sound in water is constant (about 4,800 feet, or 1,463 meters, per second), the time it takes for a transmitted signal to reach an object and return can be used to calculate the object's distance.
2. The equipment used in doing this.

sonar

A sonic device used primarily for the detection and location of underwater objects. (This term is derived from the words "sound navigation and ranging.")
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sonar - 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 returnsonar - 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"
measuring device, measuring instrument, measuring system - instrument that shows the extent or amount or quantity or degree of something
navigational instrument - an instrument used for navigating
pinger - a pulse generator used for echo sounding in sonar
pulse generator - a generator of single or multiple voltage pulses; usually adjustable for pulse rate
pigboat, submarine, U-boat, sub - a submersible warship usually armed with torpedoes
Translations
kaikuluotain

sonar

[ˈsəʊnɑːʳ] Nsonar m

sonar

[ˈsəʊnɑːr] nsonar m

sonar

nSonar(gerät) nt, → Echolot nt

sonar

[ˈsəʊnɑːʳ] nsonar m inv
References in periodicals archive ?
6) Does the inability of an LFA to regulate rates also eliminate other "important consumer protections" such as: (i) the authority to cap the price of the basic tier and equipment; (ii) the protection of a uniform rate structure; (iii) the prohibition on subscribers being required to purchase any number of programming tiers before they may order premium and pay per view offerings; and (iv) the prohibition on "negative option billing.
In the simplest application of LFA for molecular tests, consider the example of a classical PCR reaction for a single target species, but with each of the amplifying primers covalently attached to an immunological tag or hapten--with different tags for the forward and reverse primers.
We used a novel method that provided quantification of LFAs in comparison with semiquantitative CRAG LFA titers by using the heat signature of laser-irradiated gold used in the LFA.
Compared with LFAs that use fluorescent dyes in the ultraviolet and visible spectrum, NIR-LFAs offer superb analytical sensitivity, with detection of proteins in the low pg/mL range.
The present LFA map is used to work out eligibility for financial support, which will take the form of the Uplands Transitional Payment until next year.
With 80% of the agricultural land of Wales designated as LFA, the support payments provided under Tir Mynydd have been critical in ensuring the continued viability of livestock farming in the uplands and have been a much needed source of income for many of our rural communities.
LEXUS are introducing a hardcore version of their LFA supercar.
The Assembly Government insists its "primary objective" is to retain current LFA boundaries in Wales, so preserving the extra financial support these hill areas merit.
MARI's LFAS, when used in tandem with ChoicePoint's identity-risk-management and mortgage fraud solutions, is an integral tool in stopping fraud before it impacts a lender's loan portfolio, according to Tom Chmielewski, ChoicePoint's vice president of product marketing.
But he noted that there is "considerable distortion" between the member states on the issue, with some set to gain strongly from the new definition of LFAs while others would lose out considerably.
She said: "Our submarines do not use LFAS sonars, they are not operating in the Royal Navy at all.
The US Navy claims that the LFA sonar will have no adverse effects on whales or other marine life.