چکیده مقاله
Acoustic Doppler velocimeter ADV measurements are useful for measurements of mean and turbulent components of fluids in both experimental and field studies Although ADV has been used commonly for velocity measurements, existence of spikes in the recorded velocity series leads to unreliability of these series In the present study, four famous despiking algorithms, consist of RC Filter method, Tukey 53H method, acceleration thresholding method and Wavelet thresholding method, were applied to collected data in an straight channel with smooth and rough bed condition In addition, the wavelet thresholding method as a common and high efficient method was modified The results show that acceleration thresholding method and modified wavelet method reject spike points and accept valid points So these methods purify the contaminated series appropriately
کلیدواژهها
نویسندگان
Seyed Hossein Mohajeri
Formerly graduate student, Dept of Civil and environmental Engineering, Tarbiat Modares University and PhD student, Dept of Civil and environmental Engineering, university of Trento
Akbar Safarzade
Assistant Professor, Faculty of Engineering, Mohaghegh Ardebili University
سیدعلی اکبر صالحی نیشابوری
Professor, Dept of Civil and environmental Engineering, Tarbiat Modares University
مسعود قدسیان
Professor, Dept of Civil and environmental Engineering, Tarbiat Modares University
شیوه ارجاع
Mohajeri, Seyed Hossein and Safarzade, Akbar and Salehi Neyshabouri, Seyed Ali Akbar and Ghodsian, Masoud,1391,Data filtering methods for collected data by Acoustic Doppler velocimeter,9th International Congress on Civil Engineering,Isfahan
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