Title page for ETD etd-07072003-171801

Type of Document

Thesis

Author

Joshi, Shantanu H.

URN

etd-07072003-171801

Title

Sas Yaw Motion Compensation Using Along-Track Phase Filtering

Degree

Master of Science

Department

Electrical and Computer Engineering, Department of

Advisory Committee

Advisor Name	Title
Frank B. Gross	Committee Chair
Krishna R. Arora	Committee Member
Rodney R. Roberts	Committee Member

Keywords

Sas Yaw Motion
Phase Filtering

Date of Defense

2003-01-01

Availability

unrestricted

Abstract

In order to image or map targets on an ocean floor, a synthetic aperture sonar platform is moved underwater over the ocean floor. The platform pings or transmits acoustic signals, which reflect off the target back to the receiver. A target image is generated after applying a focusing or a beamforming algorithm on the processed received signal. However the moving platform, when pinging, undergoes motions like
yaw, sway, surge, which produce distortions in the final target image. The main objective
of this thesis is to geometrically model yaw motion and apply the motion compensation
scheme to correct for the yaw motion causing target image distortion. The compensation
scheme makes use of phase filtering of the received signals to improve the target image
quality. The results obtained, demonstrate effectiveness of the method to compensate for
the target image distortion due to yaw motion.

Files

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Filename		Size	28.8 Modem	56K Modem	ISDN (64 Kb)	ISDN (128 Kb)	Higher-speed Access
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	SHJ_0005.PDF	374.75 Kb	00:01:44	00:00:53	00:00:46	00:00:23	00:00:01
	SHJ_0006.PDF	2.05 Mb	00:09:28	00:04:52	00:04:16	00:02:08	00:00:10
	SHJ_0007.PDF	1.95 Mb	00:09:02	00:04:38	00:04:04	00:02:02	00:00:10
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	SHJ_000A.PDF	77.90 Kb	00:00:21	00:00:11	00:00:09	00:00:04	< 00:00:01