Choice for the signal processing kernel in synthetic aperture sonar : considerations and implications
article
Synthetic Aperture Sonar uses coherent integration of successive pings to enhance the resolution of side looking
sonar. In this paper three diffelent SAS methods are applied to obtain high-resolution images. The first
method is applied ping by ping in the frequency domain, whereas the second and third method are applied in
the wavenumber-frequency domain. The choice fol a certain method has implications with respect to a variety
of aspects. A well-considered choice for a certain method depends on these implications. The interaction
with autofocusing is analysed for two methods: displaced phase centres and image correlation. Application to
experimental data shows that the best combination is the Stolt migration algorithm in combination with image
correlation autofocus.
sonar. In this paper three diffelent SAS methods are applied to obtain high-resolution images. The first
method is applied ping by ping in the frequency domain, whereas the second and third method are applied in
the wavenumber-frequency domain. The choice fol a certain method has implications with respect to a variety
of aspects. A well-considered choice for a certain method depends on these implications. The interaction
with autofocusing is analysed for two methods: displaced phase centres and image correlation. Application to
experimental data shows that the best combination is the Stolt migration algorithm in combination with image
correlation autofocus.
Topics
TNO Identifier
95514
ISSN
4136-7947
Source
Acta acustica united with Acustica, 88, pp. 658-662.
Pages
658-662
Files
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