Title :
Methods of array element localization for a towed underwater acoustic array
Author :
Wyeth, N.Convers
Author_Institution :
Marine Technol. Div., Sci. Applications Int. Corp., McLean, VA, USA
fDate :
1/1/1994 12:00:00 AM
Abstract :
The location of the hydrophones on a towed underwater acoustic array as a function of time (array element localization) is needed for signal processing. Methods to perform this localization using least squares polynomial fitting to data from depth sensors, heading sensors, and sensors detecting a ping from a single source are discussed. Arc distance along the array is used as the independent parameter so that all solutions are constrained to be space curves. Examples of application to real data are presented, and techniques to discriminate against bad sensor data are discussed
Keywords :
acoustic arrays; acoustic signal processing; approximation theory; array signal processing; curve fitting; hydrophones; least squares approximations; oceanographic techniques; polynomials; underwater sound; arc distance; array element localization; curve fitting; depth sensors; heading sensors; hydrophones; least squares polynomial fitting; signal processing; towed underwater acoustic array; Acoustic arrays; Acoustic sensors; Array signal processing; Magnetic sensors; Maximum likelihood estimation; Polynomials; Sensor arrays; Shape; Sonar equipment; Underwater acoustics;
Journal_Title :
Oceanic Engineering, IEEE Journal of
