A subharmonic detrending or data-smoothing approach for longitudinal road profile measurements

Hans Gaunholt

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Abstract

Commonly used figure-of-merits for longitudinal road profiles such as the International Roughness Index (IRI) and the Ride Number (RN) are based on statistical properties. Raw measured longitudinal road profile data may contain large trending components especially when the measurements are made with walking profilers in hilly regions. To obtain approximate stationary data suitable for statistical processing measurements should be subjected to detrending before calculating the IRI- or RN- value. In this paper a novel detrending method is proposed which is well suited for removing large profile trends without significantly corrupting the short wavelength content of the profile data. The method called sub-harmonic detrending works by fitting sub-harmonic sinusoids to the data followed by circular filtering in order to remove the trend. The method is also well suited for data-smoothing.
Original languageEnglish
Title of host publicationProceedings on The 2001 IEEE International Symposium on Circuits and Systems
Volume2
Publication date2001
Pages413-416
ISBN (Print)0-7803-6685-9
DOIs
Publication statusPublished - 2001
Event2001 IEEE International Symposium on Circuits and Systems - Sydney, Australia
Duration: 6 May 20019 May 2001

Conference

Conference2001 IEEE International Symposium on Circuits and Systems
CountryAustralia
CitySydney
Period06/05/200109/05/2001

Bibliographical note

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