Clearance of Harbor Navigation Channels with High-resolution Bottom Surveys


The safety of navigation channels leading to or within a harbor can be ensured by repeat high‐resolution bottom surveys to detect new hazards or obstacles. This task requires a sonar systemcapable of acquiring high‐resolution acoustic backscatter imagery and bathymetry. Because of the generally shallow water depths ( 20 m), survey efficiency dictates data collection over wide swaths at high speeds. We have demonstrated these capabilities in October 2006 in New York harbor, NY, with a Klein 5410 multibeam side‐looking sonar system yiedling swath coverage of at least 7 times the water depth at a nominal survey speed of 10 knots. This has been achieved by integrating the hull‐mounted sonar system with precision attitude ( 0.01 deg) and timing ( 10‐6 s) references, and by designing and implementing a full vector processing algorithm to obtain co‐registered high‐resolution bathymetry and acoustic backscatter imagery, allowing us to resolve sub‐meter targets. [Work funded by NOAA‐NMFS].

Publication Date


Journal or Conference Title

Journal of the Acoustical Society of America





Conference Date

Jun 4 - Jun 8, 2007

Publisher Place

Salt Lake City, UT, USA


Acoustical Society of America

Digital Object Identifier (DOI)


Document Type

Journal Article


© 2007 Acoustical Society of America