Accession Number : ADA337380

Title :   Application of the Bearing Trace, Hough Transform (BTHT) to Passive Shipping Lane Monitoring

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC ADVANCED INFORMATION TECHNOLOGY BRANCH

Personal Author(s) : Shyu, Haw-Jye ; Lee, Yung P.

PDF Url : ADA337380

Report Date : 30 JAN 1998

Pagination or Media Count : 15

Abstract : A modified Hough transform to detect targets on sonar B-scan produced from data collected by a passive acoustic sensor array is presented. Assuming mat the target maintains a constant course and speed during the observation period, the target trace on the passive sonar B-scan can be shown as an arctangent function defined by the following target track parameters: speed, course, range at the closest point of approach (CPA), and CPA time. Detection of the target traces on the sonar B-scan can then be formulated as detection of the arctangent curves using the modified Hough transform. The track parameters of the target can be estimated and used to identify different targets.

Descriptors :   *TARGET DETECTION, *PASSIVE SONAR, *SCANNING SONAR, SHIP MOTION, BEARING(DIRECTION), ACOUSTIC DATA, ACOUSTIC DETECTORS, ACOUSTIC TRACKING, SONAR ARRAYS, SONAR IMAGES.

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE