Title :
Optimal design of preamplifiers for broadband passive sonar
Author_Institution :
Thales Australia, Rydalmere, NSW, Australia
Abstract :
An optimal design of preamplifiers is proposed for broadband (BB) passive sonars, in which the frequency response function (FRF) of a preamplifier is optimized to maximize the output signal-to-noise ratio (SNR) of BB passive processing. The optimal design depends on passive source signals, background noise and array shapes. It contrasts with the conventional design where preamplifiers are used for whitening or conditioning hydrophone signals due to historical reasons. A hull-mounted 2-D virtual array is used as an example to show the advantage of the proposed optimal design.
Keywords :
frequency response; hydrophones; preamplifiers; sonar; SNR; array shapes; background noise; broadband passive sonars; frequency response function; hull-mounted 2D virtual array; hydrophone signal conditioning; hydrophone signal whitening; optimal design; passive processing; passive source signals; preamplifiers; signal-to-noise ratio; Arrays; Dynamic range; Noise measurement; Preamplifiers; Signal to noise ratio; Sonar; broadband; optimal design; passive sonar; preamplifier;
Conference_Titel :
OCEANS - Bergen, 2013 MTS/IEEE
Conference_Location :
Bergen
Print_ISBN :
978-1-4799-0000-8
DOI :
10.1109/OCEANS-Bergen.2013.6608047
