Seafloor mapping using interferometric sonars

Interferometric data processing for highaccuracy:• Key Characteristic: lots of data with accurate range andnoisy angle• In each depth bin may be 100s of measurements withapproximately independent noise and randomdistribution• Mean of this many depths gives a very repeatable andreliable number• Standard Error of the Mean = Standard Deviation of datadivided by the square root of the number of data pointsAccurate depths requires high data density, good datafiltering, and prudent binning/ 26 / 30-Nov-09