DTNSRDC three component laser Doppler velocimetry: Towing tank system measurement errors

A three-component Laser Doppler Velocimetry (LDV) system is tested. Thirteen measurement errors are quantified in terms of: velocity field characteristics, LDV equipment design, and user chosen system operating parameters. Operating parameter effects on measurement error are emphasized because usually they are the only way an experimenter can control errors. Background sections and appendixes explain in considerable detail, the origin of these measurement errors. First, the operating parameter choices for the towing tank LDV system are listed with a description of how they affect measurements. Then, each of the measurement errors is discussed, and this helps establish a functional relationship to operating parameters, LDV equipment design, and flow field characteristics.