Mathematical method analyzing the accuracy of velocity measurement based on cross-correlation

Cross-correlation method has a very high measurement level in ideal conditions. However, it has so many errors in actual experiment, many influencing factors have different degree. The experiment results have the characters of statistical analysis. In order to enhance the accuracy and confidence, it is necessary to analysis the various causes and to estimate the errors. In complex phenomena of bubble motions, it plays a very important role in the analysis the experiment errors of measurement data. We analysis the various error sources and its corresponding method, and present a synthesis method.