Very High Resolution Imaging Diver Held Sonar.

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Title: Very High Resolution Imaging Diver Held Sonar.
Author: Lent, K
Abstract: New fixed focal length transducers were developed for the INSS (Integrated Navigation and Sensor System) diver held sonar which allows a VSW diver to obtain a very high resolution sonar image (with approximately 1 in. by 1 in. resolution at a range of 15 ft) and to obtain a lower resolution image of buried targets. With these new focused transducers (which will replace the existing INSS transducer) the diver should obtain identification quality sonar image of mines while at a safe standoff distance that corresponds to the focal length of the array. A second characteristic of these new transducers is that they will be sufficiently broadband to allow operation at very low frequencies. This will allow the sonar sound to propagate throughout the bottom and thereby allow lower resolution imaging of buried targets. The high resolution imaging target identification capability will provide a significant reduction in risk to the VSW MCM divers who currently have to swim up and see/touch mine-like targets for identification in turbid water.
Description: Citation Status: Active; Citation Classification: Unclassified; Title Classification: Unclassified; Report Classification: Unclassified; Identifier Classification: Unclassified; Abstract Classification: Unclassified; Distribution Limitation(s): 01 - APPROVED FOR PUBLIC RELEASE; Information provided by the Department of Defense and the Defense Technical Information Center ( is considered public information and may be distributed or copied unless otherwise specified. Use of appropriate byline/photo/image credits is requested.
Date: 2002

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