DocumentCode :
643344
Title :
Modelling and Enhancement of Stripmap Mode Coherent Sonar
Author :
Sathishkumar, Ramakrishnan ; Vignesh, Pammal Jeevankumar Aditya ; Babu, Hema Sri Ramesh
Author_Institution :
Dept. of Electron. & Commun. Eng., Sri Venkateswara Coll. of Eng., Chennai, India
fYear :
2013
fDate :
24-25 Sept. 2013
Firstpage :
242
Lastpage :
246
Abstract :
Conventional sonar offers low-resolution imaging of a target region. Synthetic aperture sonar (SAS) modeling ischallenging than the conventional systems because the towfish path geometry is more complicated and the data are usually non stationary. This paper investigates the application of synthetic aperture technique to sonar image and develops a new model for two-dimensional (2-D) SAS target feature extraction. The technique is shown to be accurate at resolving. Time-domain algorithms can handle general sonar cases, but they are very inefficient; therefore, frequency-domain methods are preferred. In this paper, we discuss the chirp scaling algorithm (CSA) to handle SAS data. An attempt is then made to overcome some of the motion errors inherent in the current 2-D SAS. Simulations are implemented and the accuracy of the technique is assessed.
Keywords :
image motion analysis; sonar imaging; synthetic aperture sonar; 2D SAS target feature extraction; CSA; chirp scaling algorithm; frequency-domain methods; low-resolution imaging; motion errors; stripmap mode coherent sonar; synthetic aperture sonar; time-domain algorithms; towfish path geometry; Chirp; Computational modeling; Imaging; Signal processing algorithms; Synthetic aperture radar; Synthetic aperture sonar; chirp scaling; modeling; motion error; sonar; synthetic aperture;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computational Intelligence, Modelling and Simulation (CIMSim), 2013 Fifth International Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4799-2308-3
Type :
conf
DOI :
10.1109/CIMSim.2013.46
Filename :
6663192
Link To Document :
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