Title :
Coaxial circular array: studies related to sidelobe suppressed beam patterns for underwater transducer application
Author :
Chakraborty, Bishwajit
Author_Institution :
Nat. Inst. of Oceanogr., Goa, India
fDate :
10/1/1988 12:00:00 AM
Abstract :
An analysis of sidelobe-suppressed beam patterns other than the usual shading methods is carried out for uniformly excited elements in a coaxial circular array at different operating wavelengths. Improved beamwidths and suppressed sidelobes are obtained for multiplicative array techniques useful for high-resolution bathymetry; however, in the case of an array with tilted element pattern, the sidelobes are not suppressed up to a satisfactory level
Keywords :
bathymetry; sonar; underwater sound; coaxial circular array; high-resolution bathymetry; multiplicative array techniques; operating wavelengths; sidelobe suppressed beam patterns; tilted element pattern; underwater transducer application; uniformly excited elements; Coaxial components; Degradation; Feeds; Geometry; Government; Oceans; Pattern analysis; Transducers;
Journal_Title :
Proceedings of the IEEE
