Modeling and correction of peak-locking in digital PIV
作者： Murali R. Cholemari
DOI: 10.1007/S00348-007-0300-8
关键词: Computer science 、 Velocity measurement 、 Particle image velocimetry 、 Fast Fourier transform 、 Sensor array 、 Error detection and correction 、 Systematic error 、 Pixel 、 Offset (computer science) 、 Algorithm
摘要: The systematic tendency of PIV evaluations to bias towards integral pixel values is known as peak-locking. These errors, although small, significantly affect the statistics extracted from such measurements. In this paper, process by which errors accrue modeled, and a scheme for removal same suggested. Specifically, modeling considers FFT with discrete window offset. results are applied actual situations found be encouraging. computationally inexpensive, can post processing technique existing data correct
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