University of Hertfordshire

By the same authors

Improving Displacement Measurement for Evaluating Longitudinal Road Profiles

Research output: Contribution to journalArticle


  • Chinedum Anthony Onuorah
  • Angus Hutton-Mckenzie
  • Sara Chaychian
  • Yichuang Sun
  • Johann Siau
View graph of relations
Original languageEnglish
Pages (from-to)3767-3779
Number of pages13
JournalIEEE Sensors Journal
Early online date6 Mar 2018
Publication statusPublished - 1 May 2018


This paper introduces a half-wavelength peak matching (HWPM) model, which improves the accuracy of vehicle based longitudinal road profilers used in evaluating road unevenness and mega-textures. In this application, the HWPM model is designed for profilers which utilize a laser displacement sensor with an accelerometer for detecting surface irregularities. The process of converting acceleration to displacement by double integration (which is used in most rofilers) is error-prone, and although there are techniques to minimize the effect of this error, this paper proposes a novel approach for improving the generated road profile results. The technique amends the vertical displacement derived from the accelerometer samples, by using data from the laser displacement sensor as a reference. The vehicle based profiler developed for this experiment (which uses the HWPM model) shows a huge improvement in detected longitudinal irregularities when compared with pre-processed results, and uses a 3-m rolling straight edge as a benchmark.


2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

ID: 13724084