Application of surface sound speed measurements in post-processing for multi-sector multibeam echosounders
Given sufficient data from ancillary sensors, swath sonar systems can generate sounding solutions in real time. The absolute accuracy o f these solutions depends both on the sonar-relative range and angle determination, and particularly on the quality of the aiding information. In this paper, we examine the correction of imperfect surface sound speed information for a multi-sector swath sonar. Difficulties arise from: (1) sector timings and boundaries changing with operational mode, and (2) insufficient information to determine the transmit sector associated with a receive beam. A number of post-processing strategies are proposed and the specific steps in implementation are described in detail.
Center for Coastal and Ocean Mapping
Journal or Conference Title
International Hydrographic Review
Beaudoin, J.D., Hughes Clarke, J.E. and Bartlett, J.E., 2004, Application of surface sound speed measurements in post-processing for multi-sector multibeam echosounders: International Hydrographic Review, v.5, no.3, p.17-32.