A cascade algorithm for estimating and compensating motion error for synthetic aperture sonar imaging

Author

Silkaitis, John M. ; Douglas, Brett L. ; Lee, Hua

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA

Volume

1

fYear

1994

fDate

13-16 Nov 1994

Firstpage

905

Abstract

This paper presents a three-level cascade algorithm for estimating and compensating platform motion errors during synthetic aperture sonar imaging. By using a multiple element receiving array, physical aperture images can be produced from each transmit burst. With proper spatial sampling, there is sufficient redundancy in successive physical aperture images to extract motion parameters that can be applied to the image data to fully realize the improved resolution capability of synthetic aperture techniques. Since this algorithm is based on autofocus techniques, changes in the medium during synthetic aperture formation are inherently corrected as well. In addition, this algorithm is compared to two motion estimation and compensation techniques used in synthetic aperture radar imaging

Keywords

image resolution; image sampling; motion compensation; motion estimation; sonar arrays; sonar imaging; autofocus techniques; image data; image resolution; motion error compensation; motion error estimation; motion parameters extraction; multiple element receiving array; physical aperture images; platform motion errors; redundancy; spatial sampling; synthetic aperture radar imaging; synthetic aperture sonar imaging; three-level cascade algorithm; Acoustic imaging; Computer errors; Data mining; Image resolution; Inertial navigation; Motion estimation; Oceans; Reflectivity; Sonar navigation; Synthetic aperture sonar;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 1994. Proceedings. ICIP-94., IEEE International Conference

Conference_Location

Austin, TX

Print_ISBN

0-8186-6952-7

Type

conf

DOI

10.1109/ICIP.1994.413443

Filename

413443