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dc.contributor.author | Ray, Pabitro | es_ES |
dc.contributor.author | Salido-Monzú, David | es_ES |
dc.contributor.author | Wieser, Andreas | es_ES |
dc.date.accessioned | 2023-03-02T14:23:07Z | |
dc.date.available | 2023-03-02T14:23:07Z | |
dc.date.issued | 2023-01-27 | |
dc.identifier.isbn | 9788490489796 | |
dc.identifier.uri | http://hdl.handle.net/10251/192247 | |
dc.description.abstract | [EN] High-precision electro-optical distance measurement (EDM) is essential for deformation monitoring. Although sub-ppm instrumental accuracy is already feasible with state-of-the-art commercial technology, the practically attainable accuracy on distances over more than a few hundred meters is limited by uncertainties in estimating the integral refractive index along the propagation path, which often results in measurement errors of several ppm. This paper presents a new instrumental basis for high-accuracy multispectral EDM using an optical supercontinuum to enable dispersion-based inline refractivity compensation. Initial experiments performed on two spectrally filtered bands of 590 and 890 nm from the supercontinuum show measurement precision better than 0.05 mm over 50 m for an acquisition time of around 3 ms on the individual bands. This represents a comparable performance to our previously reported results on 5 cm by over a range of 3 orders of magnitude longer, which can still be improved by increasing the acquisition time. The preliminary results indicate a relative accuracy of about 0.1 mm at 50 m on each wavelength. Improvement is possible by calibration and by implementing a self-reference scheme that mitigates slow drifts caused by power-to-phase coupling. The results reported herein thus indicate that the presented approach can be further developed for achieving sub-ppm accuracy of refractivity compensated distance measurements on practically useful ranges and under outdoor conditions. | es_ES |
dc.description.sponsorship | The present research was co-funded by the Swiss National Science Foundation (SNSF) through research grant 200021_184988. | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | Editorial Universitat Politècnica de València | es_ES |
dc.relation.ispartof | 5th Joint International Symposium on Deformation Monitoring (JISDM 2022) | |
dc.rights | Reconocimiento - No comercial - Compartir igual (by-nc-sa) | es_ES |
dc.subject | Optical metrology | es_ES |
dc.subject | Frequency combs | es_ES |
dc.subject | Supercontinuum | es_ES |
dc.subject | Multiwavelength EDM | es_ES |
dc.subject | Refractivity compensation | es_ES |
dc.title | High-precision intermode-beating EDM for mitigation of atmospheric delays | es_ES |
dc.type | Capítulo de libro | es_ES |
dc.type | Comunicación en congreso | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/SNSF//200021_184988/CH | es_ES |
dc.rights.accessRights | Abierto | es_ES |
dc.description.bibliographicCitation | Ray, P.; Salido-Monzú, D.; Wieser, A. (2023). High-precision intermode-beating EDM for mitigation of atmospheric delays. En 5th Joint International Symposium on Deformation Monitoring (JISDM 2022). Editorial Universitat Politècnica de València. http://hdl.handle.net/10251/192247 | es_ES |
dc.description.accrualMethod | OCS | es_ES |
dc.relation.conferencename | 5th Joint International Symposium on Deformation Monitoring | es_ES |
dc.relation.conferencedate | Junio 20-22, 2022 | es_ES |
dc.relation.conferenceplace | València, España | es_ES |
dc.relation.publisherversion | http://ocs.editorial.upv.es/index.php/JISDM/JISDM2022/paper/view/13629 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.relation.pasarela | OCS\13629 | es_ES |
dc.contributor.funder | Swiss National Science Foundation | es_ES |