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Maximizing precision over extended unambiguous range for TOF range imaging systems

Abstract
The maximum unambiguous range for time-of-flight range imaging systems is inversely proportional to the chosen modulation frequency. However, increasing the unambiguous range by decreasing the modulation frequency will generally also degrade the range measurement precision. We describe a technique that significantly extends the range of a time-of-flight imaging system without compromising range precision. This is achieved by employing two modulation frequencies simultaneously. The chosen frequencies can be a combination of high and low frequency, or two similarly high frequencies. In this paper we present experimental results comparing single frequency; dual high and low frequency; and dual high frequency operation and demonstrate that range precision need not be appreciably compromised to achieve an extended unambiguous range.
Type
Journal Article
Type of thesis
Series
Citation
Jongenelen, A.P.P., Carnegie, D.A., Payne, A.D. & Dorrington, A.A. (2010). Maximizing precision over extended unambiguous range for TOF range imaging systems. In Proceedings of 2010 IEEE Instrumentation & Measurement Technology Conference, 3-6 May 2010, Austin, TX, USA (pp. 1575-1580). Washington DC, USA: IEEE.
Date
2010
Publisher
IEEE
Degree
Supervisors
Rights
©2010 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.