Title :
Space time adaptive processing for low frequency sonar
Author :
Mio, Karine ; Chocheyras, Yves ; Doisy, Yves
Author_Institution :
Thomson Marconi Sonar, Sophia Antipolis, France
Abstract :
The objective of this work is to enhance performances of active sonar in reverberation limited conditions by means of specific waveforms and space time processing techniques. We focus on the performances of comb spectrum waveforms, merging the advantages of both HFM and CW codes: their broadband characteristics enable good detection performances (good temporal resolution) the reverberation direction of arrival is spatially limited and it can be rejected with spatial processing techniques. We compare the results of comb transmissions with adaptive and conventional beamforming
Keywords :
codes; reverberation; sonar detection; space-time adaptive processing; CW codes; HFM codes; active sonar; broadband characteristic; comb spectrum waveforms; comb transmissions; detection performances; low frequency sonar; performances; reverberation direction of arrival; reverberation limited conditions; space time adaptive processing; space time processing techniques; spatial processing techniques; temporal resolution; Array signal processing; Bandwidth; Doppler shift; Frequency; Merging; Regions; Reverberation; Scattering; Sonar; Wideband;
Conference_Titel :
OCEANS 2000 MTS/IEEE Conference and Exhibition
Conference_Location :
Providence, RI
Print_ISBN :
0-7803-6551-8
DOI :
10.1109/OCEANS.2000.881786
