Title :
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
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;
Conference_Titel :
Image Processing, 1994. Proceedings. ICIP-94., IEEE International Conference
Conference_Location :
Austin, TX
Print_ISBN :
0-8186-6952-7
DOI :
10.1109/ICIP.1994.413443
