Computer model of a high-resolution imaging sonar
By: Rajendar Bahl and John P. Powers
Contributors: Powers, J.P., (John Patrick); Naval Postgraduate School (U.S.). Dept. of Electrical and Computer Engineering
Publisher: Naval Postgraduate School; Available from National Technical Information Service
Published: 1990
Place of publication: Monterey, Calif; Springfield, Va
Language: eng
Number of pages: 51
Subjects: HIGH RESOLUTION; SONAR IMAGES; COMPUTERIZED SIMULATION
Other titles: NPS-62-90-011.
Description: A computer model of a high-resolution sector-scanning sonar used for imaging objects      against the sea bottom is presented. The model accounts for the sonar parameters, bottom      backscatter, reflections from the target's visible surface, and the target's acoustic shadow. A      variety of imaging scenarios can be simulated including the type of target, the target's      orientation relative to the sonar and the bottom, and the backscatter statistics. The acoustic      images are presented in the conventional B-scan format. A new display format that is useful      for visualizing the target's silhouette is also presented. Visual perspective images of the scene      are presented to serve as a reference for subsequent image reconstruction work. Preliminary      results for 3-d reconstruction of the confining volume of the visible target surface are also      presented. The simulation model and the results of the 3-d reconstruction demonstrate the      promise of the application of image processing techniques for classification of objects using      acoustic images. (kr)
Notes: Cover title.

"NPS-62-90-011."

"June 1990."

AD A228 343.

Includes bibliographical references (p. 45-46)

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