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Understanding and ameliorating non-linear phase and amplitude responses in AMCW Lidar

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Show simple item record Godbaz, John Peter Cree, Michael J. Dorrington, Adrian A. 2012-10-04T20:58:22Z 2012-10-04T20:58:22Z 2012-01-23 2012
dc.identifier.citation Godbaz, J. P., Cree, M. J., & Dorrington, A. A. (2012).Understanding and ameliorating non-linear phase and amplitude responses in AMCW Lidar. Remote Sensing, 4(1), 21-42. en_NZ
dc.identifier.issn 2072-4292
dc.description.abstract Amplitude modulated continuous wave (AMCW) lidar systems commonly suffer from non-linear phase and amplitude responses due to a number of known factors such as aliasing and multipath inteference. In order to produce useful range and intensity information it is necessary to remove these perturbations from the measurements. We review the known causes of non-linearity, namely aliasing, temporal variation in correlation waveform shape and mixed pixels/multipath inteference. We also introduce other sources of non-linearity, including crosstalk, modulation waveform envelope decay and non-circularly symmetric noise statistics, that have been ignored in the literature. An experimental study is conducted to evaluate techniques for mitigation of non-linearity, and it is found that harmonic cancellation provides a significant improvement in phase and amplitude linearity. en_NZ
dc.format.mimetype application/pdf
dc.language.iso en
dc.publisher MDPI en_NZ
dc.relation.ispartof Remote Sensing
dc.rights © 2012 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license ( en_NZ
dc.subject phase linearity en_NZ
dc.subject AMCW en_NZ
dc.subject Lidar en_NZ
dc.subject Harmonic cancelation en_NZ
dc.subject Heterodyning en_NZ
dc.subject Irregular phase steps en_NZ
dc.subject Crosstalk en_NZ
dc.subject Multipath en_NZ
dc.subject Non-circularly-symmetric noise en_NZ
dc.title Understanding and ameliorating non-linear phase and amplitude responses in AMCW Lidar en_NZ
dc.type Journal Article en_NZ
dc.identifier.doi 10.3390/rs4010021 en_NZ
pubs.elements-id 37159

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