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Underwater navigation

Acoustic transponder array for the fixation of relative co-ordinates of the survey area For underwater navigation an acoustic transponder array will be deployed which allows the tracking of the subsea equipment carriers by long base line calculations. In addition a short base line system exists with transponders mounted fore and aft underneath the vessel so that position relative to vessel can be determined as additional reference. [Pg.78]

Underwater Sound. Applications for underwater acoustics include devices for underwater communication by acoustic means, remote control devices, underwater navigation and positioning systems, acoustic thermometers to measure ocean temperature, and echo sounders to locate schools of fish or other biota. Low-frequency devices can be used to explore the seabed for seismic research. [Pg.7]

Sutton, R., Burns, R.S. and Craven, P.J. (2000) Intelligent Steering Control of an Autonomous Underwater Vehicle, Journal of Navigation, 53(3), pp. 511-525. [Pg.432]

McPhail, S.D. and Pebody, M., 1998. Navigation and control of an autonomous underwater vehicle using a distributed, networked, control architecture. Underwater Technology,... [Pg.1179]

Navigational aids have many applications, which are tailored to underwater, water surface, terrestrial, atmospheric, and space use. [Pg.1268]

Sonar, acronym for SOund Navigation And Ranging, a detection system based on the reflection of underwater sound waves. A typical sonar system emits ultrasonic pulses by using... [Pg.488]

An application that has recently benefltted from the use of ferroelect polymers is autonomous underwater vehicle (AUV) hydrophones and conformal arrays (8.9]. These sensors need to operate over wide frequency bands. They are also designed to be mounted in or on cylindrical shell structures. The main need for these types of hydrophones and arrays is for obstacle avoidance, navigation, and target detection. Tb accomplish this it is necessary to maintain systems with high directivity resolution, reduced side-lobe levels, and high element-to-elcment uniformily. From a manufacturing viewpoint, U is desired to have low cost, ease of fabrication, low weight and volume, and minimal field profile. [Pg.741]

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See also in sourсe #XX -- [ Pg.1269 ]



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