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Dynamic digital signal processing algorithm for vital signs extraction in continuous-wave radars

2021-10-13Journal article Open access
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dc.contributor.authorGouveia, Carolina
dc.contributor.authorAlbuquerque, Daniel
dc.contributor.authorVieira, José
dc.contributor.authorPinho, Pedro
dc.date.accessioned2021-11-18T14:08:54Z
dc.date.available2021-11-18T14:08:54Z
dc.date.issued2021-10-13
dc.description.abstractRadar systems have been widely explored as a monitoring tool able to assess the subject's vital signs remotely. However, their implementation in real application scenarios is not straightforward. Received signals encompass parasitic reflections that occur in the monitoring environment. Generally, those parasitic components, often treated as a complex DC (CDC) offsets, must be removed in order to correctly extract the bio-signals information. Fitting methods can be used, but their implementation were revealed to be challenging when bio-signals are weak or when these parasitic reflections arise from non-static targets, changing the CDC offset properties over time. In this work, we propose a dynamic digital signal processing algorithm to extract the vital signs from radar systems. This algorithm includes a novel arc fitting method to estimate the CDC offsets on the received signal. The method revealed being robust to weaker signals, presenting a success rate of 95%, irrespective of the considered monitoring conditions. Furthermore, the proposed algorithm is able to adapt to slow changes in the propagation environment.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGOUVEIA, Carolina; [et al] – Dynamic digital signal processing algorithm for vital signs extraction in continuous-wave radars. Remote Sensing. eISSN 2072-4292. Vol. 13, N.º 20 (2021), pp. 1-23pt_PT
dc.identifier.doi10.3390/rs13204079pt_PT
dc.identifier.eissn2072-4292
dc.identifier.urihttp://hdl.handle.net/10400.21/14012
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationSFRH/BD/139847/2018 - FCT through Fundo Social Europeu (FSE) and by Programa Operacional Regional do Centropt_PT
dc.relationUIDB/05583/2020 - FCT through Fundo Social Europeu (FSE) and by Programa Operacional Regional do Centropt_PT
dc.relation.publisherversionhttps://www.mdpi.com/2072-4292/13/20/4079pt_PT
dc.subjectArc fittingpt_PT
dc.subjectBio-radarpt_PT
dc.subjectContinuous-wavept_PT
dc.subjectDC offsetspt_PT
dc.subjectDigital signal processing algorithmpt_PT
dc.subjectVital signspt_PT
dc.titleDynamic digital signal processing algorithm for vital signs extraction in continuous-wave radarspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage23pt_PT
oaire.citation.issue20pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleRemote Sensingpt_PT
oaire.citation.volume13pt_PT
person.familyNameGouveia
person.familyNameFilipe Albuquerque
person.familyNamePinho
person.givenNameCarolina
person.givenNameDaniel
person.givenNamePedro
person.identifier.ciencia-id7816-31A6-9E03
person.identifier.ciencia-id2C16-91D6-5F09
person.identifier.ciencia-id4C17-7EC8-C889
person.identifier.orcid0000-0002-2077-2871
person.identifier.orcid0000-0002-8897-9123
person.identifier.orcid0000-0001-5588-7794
person.identifier.ridD-4304-2009
person.identifier.scopus-author-id57205645626
person.identifier.scopus-author-id16031596400
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication30bb7119-0565-496f-8578-fc20cfaec032
relation.isAuthorOfPublication0315b864-2283-4035-9eeb-c21b7daedf97
relation.isAuthorOfPublication8347c340-8bc5-4fe8-8377-6bf016c2e2d2
relation.isAuthorOfPublication.latestForDiscovery8347c340-8bc5-4fe8-8377-6bf016c2e2d2

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