Publication
Dynamic digital signal processing algorithm for vital signs extraction in continuous-wave radars
| Summary: | Radar 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. |
|---|---|
| Main Authors: | Gouveia, Carolina |
| Other Authors: | Albuquerque, Daniel; Vieira, José; Pinho, Pedro |
| Subject: | Arc fitting Bio-radar Continuous-wave DC offsets Digital signal processing algorithm Vital signs |
| Year: | 2021 |
| Country: | Portugal |
| Document type: | article |
| Access type: | open access |
| Associated institution: | Universidade Politécnica de Lisboa |
| Language: | English |
| Origin: | Repositório Científico da Universidade Politécnica de Lisboa |
| _version_ | 1880398433128284160 |
|---|---|
| author | Gouveia, Carolina |
| author2 | Albuquerque, Daniel Vieira, José Pinho, Pedro |
| author2_role | author author author |
| author_facet | Gouveia, Carolina Albuquerque, Daniel Vieira, José Pinho, Pedro |
| author_role | author |
| contributor_name_str_mv | RCIPL |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Gouveia, Carolina\",\"Person.identifier.cienciaID\":\"7816-31A6-9E03\",\"Person.identifier.orcid\":\"0000-0002-2077-2871\",\"Person.identifier.scopusAuthorID\":\"57205645626\"},{\"Person.name\":\"Albuquerque, Daniel\",\"Person.identifier.cienciaID\":\"2C16-91D6-5F09\",\"Person.identifier.orcid\":\"0000-0002-8897-9123\"},{\"Person.name\":\"Vieira, José\"},{\"Person.name\":\"Pinho, Pedro\",\"Person.identifier.cienciaID\":\"4C17-7EC8-C889\",\"Person.identifier.orcid\":\"0000-0001-5588-7794\",\"Person.identifier.researcherID\":\"D-4304-2009\",\"Person.identifier.researcherID\":\"D-4304-2009\",\"Person.identifier.scopusAuthorID\":\"16031596400\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RCIPL |
| datacite.creators.creator.creatorName.fl_str_mv | Gouveia, Carolina Albuquerque, Daniel Vieira, José Pinho, Pedro |
| datacite.date.Accepted.fl_str_mv | 2021-10-13T00:00:00Z |
| datacite.date.available.fl_str_mv | 2021-11-18T14:08:54Z |
| datacite.date.embargoed.fl_str_mv | 2021-11-18T14:08:54Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Arc fitting Bio-radar Continuous-wave DC offsets Digital signal processing algorithm Vital signs |
| datacite.titles.title.fl_str_mv | Dynamic digital signal processing algorithm for vital signs extraction in continuous-wave radars |
| dc.contributor.none.fl_str_mv | RCIPL |
| dc.creator.none.fl_str_mv | Gouveia, Carolina Albuquerque, Daniel Vieira, José Pinho, Pedro |
| dc.date.Accepted.fl_str_mv | 2021-10-13T00:00:00Z |
| dc.date.available.fl_str_mv | 2021-11-18T14:08:54Z |
| dc.date.embargoed.fl_str_mv | 2021-11-18T14:08:54Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10400.21/14012 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | MDPI |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Arc fitting Bio-radar Continuous-wave DC offsets Digital signal processing algorithm Vital signs |
| dc.title.fl_str_mv | Dynamic digital signal processing algorithm for vital signs extraction in continuous-wave radars |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | Radar 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. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| fulltext.url.fl_str_mv | https://repositorio.ipl.pt/bitstreams/1bacae87-eeda-4293-a0a6-ee1219cd675d/download |
| id | ripl_f5b972d41da826b13e4e12dce17bf218 |
| identifier.url.fl_str_mv | http://hdl.handle.net/10400.21/14012 |
| inst_facet_str | urn:organizationAcronym:ipl{{{_:::_}}}Universidade Politécnica de Lisboa |
| instacron_str | ipl |
| institution | Universidade Politécnica de Lisboa |
| instname_str | Universidade Politécnica de Lisboa |
| language | eng |
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| network_name_str | Repositório Científico da Universidade Politécnica de Lisboa |
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| organization_str_mv | urn:organizationAcronym:ipl |
| person_str_mv | Gouveia, Carolina Gouveia, Carolina https://www.ciencia-id.pt/7816-31A6-9E03 7816-31A6-9E03 http://orcid.org/0000-0002-2077-2871 0000-0002-2077-2871 Albuquerque, Daniel Albuquerque, Daniel https://www.ciencia-id.pt/2C16-91D6-5F09 2C16-91D6-5F09 http://orcid.org/0000-0002-8897-9123 0000-0002-8897-9123 Vieira, José Pinho, Pedro Pinho, Pedro https://www.ciencia-id.pt/4C17-7EC8-C889 4C17-7EC8-C889 http://orcid.org/0000-0001-5588-7794 0000-0001-5588-7794 |
| publishDate | 2021 |
| publisher.none.fl_str_mv | MDPI |
| repo_facet_str | urn:repositoryAcronym:ripl{{{_:::_}}}Repositório Científico da Universidade Politécnica de Lisboa |
| reponame_str | Repositório Científico da Universidade Politécnica de Lisboa |
| repository_id_str | urn:repositoryAcronym:ripl |
| service_str_mv | urn:repositoryAcronym:ripl |
| spelling | engMDPIpt_PTRadar 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.application/pdfpt_PTDynamic digital signal processing algorithm for vital signs extraction in continuous-wave radarsPersonalGouveia, CarolinaDSpacehttp://dspace.org/items/30bb7119-0565-496f-8578-fc20cfaec032DSpacehttp://dspace.org/items/30bb7119-0565-496f-8578-fc20cfaec032GouveiaCarolinaCiência IDhttps://www.ciencia-id.pt7816-31A6-9E03ORCIDhttp://orcid.org0000-0002-2077-2871Scopus Author IDhttps://www.scopus.com57205645626PersonalAlbuquerque, DanielDSpacehttp://dspace.org/items/0315b864-2283-4035-9eeb-c21b7daedf97DSpacehttp://dspace.org/items/0315b864-2283-4035-9eeb-c21b7daedf97Filipe AlbuquerqueDanielCiência IDhttps://www.ciencia-id.pt2C16-91D6-5F09ORCIDhttp://orcid.org0000-0002-8897-9123Vieira, JoséPersonalPinho, PedroDSpacehttp://dspace.org/items/8347c340-8bc5-4fe8-8377-6bf016c2e2d2DSpacehttp://dspace.org/items/8347c340-8bc5-4fe8-8377-6bf016c2e2d2PinhoPedroCiência IDhttps://www.ciencia-id.pt4C17-7EC8-C889ORCIDhttp://orcid.org0000-0001-5588-7794Researcher IDhttps://www.researcherid.comD-4304-2009Researcher IDhttps://www.researcherid.comD-4304-2009Scopus Author IDhttps://www.scopus.com16031596400HostingInstitutionOrganizationalRCIPLe-mailmailto:rcaap@sp.ipl.ptrcaap@sp.ipl.ptDOIIsPartOf10.3390/rs132040792021-11-18T14:08:54Z2021-10-132021-10-13T00:00:00ZHandlehttp://hdl.handle.net/10400.21/14012http://purl.org/coar/access_right/c_abf2open accessArc fittingBio-radarContinuous-waveDC offsetsDigital signal processing algorithmVital signs4651935 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal articlehttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorio.ipl.pt/bitstreams/1bacae87-eeda-4293-a0a6-ee1219cd675d/downloadRemote Sensing1320123 |
| spellingShingle | Dynamic digital signal processing algorithm for vital signs extraction in continuous-wave radars Gouveia, Carolina Arc fitting Bio-radar Continuous-wave DC offsets Digital signal processing algorithm Vital signs |
| status | SINGLETON |
| subject.fl_str_mv | Arc fitting Bio-radar Continuous-wave DC offsets Digital signal processing algorithm Vital signs |
| title | Dynamic digital signal processing algorithm for vital signs extraction in continuous-wave radars |
| title_full | Dynamic digital signal processing algorithm for vital signs extraction in continuous-wave radars |
| title_fullStr | Dynamic digital signal processing algorithm for vital signs extraction in continuous-wave radars |
| title_full_unstemmed | Dynamic digital signal processing algorithm for vital signs extraction in continuous-wave radars |
| title_short | Dynamic digital signal processing algorithm for vital signs extraction in continuous-wave radars |
| title_sort | Dynamic digital signal processing algorithm for vital signs extraction in continuous-wave radars |
| topic | Arc fitting Bio-radar Continuous-wave DC offsets Digital signal processing algorithm Vital signs |
| topic_facet | Arc fitting Bio-radar Continuous-wave DC offsets Digital signal processing algorithm Vital signs |
| url | http://hdl.handle.net/10400.21/14012 |
| visible | 1 |
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