منابع مشابه
Operating an Acoustic Doppler Current Profiler aboard a Container Vessel
Since October 1992 an acoustic Doppler current profiler (ADCP) has been in near-continuous operation on board a 118-m-long container vessel, the container motor vessel Oleander, which operates on a weekly schedule between Port Elizabeth, New Jersey, and Hamilton, Bermuda. The ADCP collects information on currents from the surface to depths as great as 404 m depending on zooplankton concentratio...
متن کاملBackscatter Estimation Using Broadband Acoustic Doppler Current Profilers
Growing interest has developed in acoustic studies about the abundance and distributional patterns of the suspended matter, such as plankton and sediments, that act as sound scatterers for Broadband Acoustic Doppler Current Profiler measurements. Supported by careful calibration procedures, acoustic studies using vertical profiles of echo intensity from moored or vessel-mounted Broadband ADCPs ...
متن کاملEstimating longitudinal dispersion in rivers using Acoustic Doppler Current Profilers
a r t i c l e i n f o The longitudinal dispersion coefficient (D) is an important parameter needed to describe the transport of solutes in rivers and streams. The dispersion coefficient is generally estimated from tracer studies but the method can be expensive and time consuming, especially for large rivers. A number of empirical relations are available to estimate the dispersion coefficient; h...
متن کاملThe Use of Channel Characteristics for the Calibration of Index Velocity Ratings for Acoustic Doppler Velocity Meters
Acoustic Doppler Velocity Meters (ADVMs) have become popular for estimating discharge in rivers exhibiting complex flow characteristics. To use the ADVMs for estimating channel discharge, a relation needs to be developed between the mean channel velocity and the index velocity provided by the ADVM. In the past, this relation was primarily developed empirically. To improve the accuracy of ADVM d...
متن کاملDistributed localization using acoustic Doppler
It is well-known that the motion of an acoustic source can be estimated from Doppler shift observations. It is however not obvious how to design a sensor network to efficiently deliver the localization service. In this work a rather simplistic motion model is proposed that is aimed at sensor networks with realistic numbers of sensor nodes. It is also described how to efficiently solve the assoc...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1982
ISSN: 0001-4966
DOI: 10.1121/1.2019763