On methods of multi-beam data error correction

According to analysis to the error sources of the multibeam sonar system, corresponding methods are applied in different error correction processes. The method of filtering is adopted to reduce sounding noises. To the calibration error, recalculation is amended to correction. As to the sound speed profile error, marginal beams are deleted and Equivalent Sound Velocity Profile method is brought to diminish the effect of the error. In this paper the method using the single beam data as a reference to correct the integrated errors of the multibeam data are detailed. All the methods that have been applied in the 908 projects of State Oceanic Administration achieved good results.