提高互相关测速精度的数学处理方法研究  

Mathematic method of improving cross-correlation velocimetry level

作　　者：陈敏[1] 许雪林[1] 

机构地区：[1]福建工程学院,福建福州350005

出　　处：《微计算机信息》2010年第13期47-48,22,共3页Control & Automation

基　　金：福建工程学院科研发展基金资助项目(GY-Z0742)

摘　　要：互相关技术在比较理想的环境下速度测量精度很高,但在实际实验中,影响因素很多而且复杂,不同实验中各因素的影响程度也不同,实验测量结果本身也带有统计分析的特征。为了提高测量结果的准确性和可信度,必须对产生误差的各种原因进行分析,对误差进行估算。对于复杂的气泡运动现象来说,速度测量结果的实验误差分析尤为重要。文中详细分析了互相关测速的各种误差源,探讨了相应的解决方法,并提出了一种针对互相关测速误差的综合分析及其相应处理手段。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 measurrment data. We analysis the various error sources and its corresponding method, and present a sythesis method.

关 键 词：速度 互相关 系统误差 随机误差 

分 类 号：O436[机械工程—光学工程]