Evaluation of the credibility of reflectorless distance measurement

Lambrou, E; Pantazis, G

dc.contributor.author	Lambrou, E	en
dc.contributor.author	Pantazis, G	en
dc.date.accessioned	2014-03-01T01:33:27Z
dc.date.available	2014-03-01T01:33:27Z
dc.date.issued	2010	en
dc.identifier.issn	0733-9453	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20421
dc.subject	Distance measurement	en
dc.subject	Experimentation	en
dc.subject	Surveys	en
dc.subject.classification	Engineering, Civil	en
dc.subject.other	Angles of incidence	en
dc.subject.other	Electromagnetic energy	en
dc.subject.other	Experimentation	en
dc.subject.other	Quick measurement	en
dc.subject.other	Reflecting surface	en
dc.subject.other	Total station	en
dc.subject.other	Distance measurement	en
dc.subject.other	Electromagnetic waves	en
dc.subject.other	Measurements	en
dc.subject.other	Surveys	en
dc.subject.other	Experiments	en
dc.subject.other	electromagnetic method	en
dc.subject.other	experimental study	en
dc.subject.other	measurement method	en
dc.subject.other	surveying	en
dc.title	Evaluation of the credibility of reflectorless distance measurement	en
heal.type	journalArticle	en
heal.identifier.primary	10.1061/(ASCE)SU.1943-5428.0000029	en
heal.identifier.secondary	http://dx.doi.org/10.1061/(ASCE)SU.1943-5428.0000029	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	Reflectorless distance measurement provides the ability to easily make quick measurements saving time and labor for surveyors. The precision and accuracy of these types of measurements are under discussion because of the variety of parameters that can affect these measurements that are not well-understood. This paper attempts to answer some of the questions that have arisen about the credibility of reflectorless distance measurements ranging up to 50 m. An experiment was carried out using 26 different materials as the reflecting surface (these materials were also of differing colors). Additionally, the experiment used three different angles of incidence of the incoming electromagnetic energy with three different types of reflectorless total stations over a variety of ranges. A further experiment was conducted with an additional total station using 11 different materials at different ranges. To properly evaluate the results, a special supporting base was manufactured for holding the reflecting surface to ensure accuracy in the evaluation. The results are presented in tables and the conclusions that are derived indicate that further investigation is needed, especially at longer distances, as the parameters that influence reflectorless distance measurement in those situations are many more, and more important than at short ranges. © 2010 ASCE.	en
heal.publisher	ASCE-AMER SOC CIVIL ENGINEERS	en
heal.journalName	Journal of Surveying Engineering	en
dc.identifier.doi	10.1061/(ASCE)SU.1943-5428.0000029	en
dc.identifier.isi	ISI:000283411800005	en
dc.identifier.volume	136	en
dc.identifier.issue	4	en
dc.identifier.spage	165	en
dc.identifier.epage	171	en