VHF doppler radar backscatter measurements through the entire neutral atmosphere (15-95 km) above Jicamarca, Peru
Descripción del Articulo
The Jicamarca 50-MHz radar was used to obtain backscattered echoes through the entire atmosphere (0-100 km). Previous radar observations at VHF have shown a gap near the 35-55 km region, where the lack of echoes is attributed to a lack of radar sensitivity. By using the full Jicamarca antenna array...
Autores: | , , |
---|---|
Formato: | documento de trabajo |
Fecha de Publicación: | 1980 |
Institución: | Instituto Geofísico del Perú |
Repositorio: | IGP-Institucional |
Lenguaje: | inglés |
OAI Identifier: | oai:repositorio.igp.gob.pe:20.500.12816/538 |
Enlace del recurso: | http://hdl.handle.net/20.500.12816/538 |
Nivel de acceso: | acceso abierto |
Materia: | Echoes Signal processing Radar Jicamarca Radio Observatory Antennas http://purl.org/pe-repo/ocde/ford#1.05.01 |
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dc.title.none.fl_str_mv |
VHF doppler radar backscatter measurements through the entire neutral atmosphere (15-95 km) above Jicamarca, Peru |
title |
VHF doppler radar backscatter measurements through the entire neutral atmosphere (15-95 km) above Jicamarca, Peru |
spellingShingle |
VHF doppler radar backscatter measurements through the entire neutral atmosphere (15-95 km) above Jicamarca, Peru Cornish, C.R. Echoes Signal processing Radar Jicamarca Radio Observatory Antennas http://purl.org/pe-repo/ocde/ford#1.05.01 |
title_short |
VHF doppler radar backscatter measurements through the entire neutral atmosphere (15-95 km) above Jicamarca, Peru |
title_full |
VHF doppler radar backscatter measurements through the entire neutral atmosphere (15-95 km) above Jicamarca, Peru |
title_fullStr |
VHF doppler radar backscatter measurements through the entire neutral atmosphere (15-95 km) above Jicamarca, Peru |
title_full_unstemmed |
VHF doppler radar backscatter measurements through the entire neutral atmosphere (15-95 km) above Jicamarca, Peru |
title_sort |
VHF doppler radar backscatter measurements through the entire neutral atmosphere (15-95 km) above Jicamarca, Peru |
author |
Cornish, C.R. |
author_facet |
Cornish, C.R. Balsley, B.B. Woodman Pollitt, Ronald Francisco |
author_role |
author |
author2 |
Balsley, B.B. Woodman Pollitt, Ronald Francisco |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Cornish, C.R. Balsley, B.B. Woodman Pollitt, Ronald Francisco |
dc.subject.none.fl_str_mv |
Echoes Signal processing Radar Jicamarca Radio Observatory Antennas |
topic |
Echoes Signal processing Radar Jicamarca Radio Observatory Antennas http://purl.org/pe-repo/ocde/ford#1.05.01 |
dc.subject.ocde.none.fl_str_mv |
http://purl.org/pe-repo/ocde/ford#1.05.01 |
description |
The Jicamarca 50-MHz radar was used to obtain backscattered echoes through the entire atmosphere (0-100 km). Previous radar observations at VHF have shown a gap near the 35-55 km region, where the lack of echoes is attributed to a lack of radar sensitivity. By using the full Jicamarca antenna array and maximun transmitter power and by optimizing transmitter duty cycle through the implementation of complementary codes, doppler measurements display discernable peaks in the computed spectra from atmospheric signals in the gap region as well as above and below it. The results indicate that a minimum power-aperture threshold in excess of 1010 W-m2 is required in order to obtain backscatter echoes near 50 MHz through the entire neutral atmosphere. |
publishDate |
1980 |
dc.date.accessioned.none.fl_str_mv |
2016-11-08T00:41:19Z 2017-12-21T19:41:42Z |
dc.date.available.none.fl_str_mv |
2016-11-08T00:41:19Z 2017-12-21T19:41:42Z |
dc.date.issued.fl_str_mv |
1980 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/workingPaper |
format |
workingPaper |
dc.identifier.citation.none.fl_str_mv |
Cornish, C. R., Balsley, B. B., & Woodman, R. F. (1980). VHF doppler radar backscatter measurements through the entire neutral atmosphere (15-95 km) above Jicamarca, Perú. |
dc.identifier.uri.none.fl_str_mv |
http://hdl.handle.net/20.500.12816/538 |
identifier_str_mv |
Cornish, C. R., Balsley, B. B., & Woodman, R. F. (1980). VHF doppler radar backscatter measurements through the entire neutral atmosphere (15-95 km) above Jicamarca, Perú. |
url |
http://hdl.handle.net/20.500.12816/538 |
dc.language.iso.none.fl_str_mv |
eng |
language |
eng |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
dc.rights.uri.none.fl_str_mv |
https://creativecommons.org/licences/by/4.0/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licences/by/4.0/ |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Instituto Geofísico del Perú, Radio Observatorio de Jicamarca |
publisher.none.fl_str_mv |
Instituto Geofísico del Perú, Radio Observatorio de Jicamarca |
dc.source.none.fl_str_mv |
reponame:IGP-Institucional instname:Instituto Geofísico del Perú instacron:IGP |
instname_str |
Instituto Geofísico del Perú |
instacron_str |
IGP |
institution |
IGP |
reponame_str |
IGP-Institucional |
collection |
IGP-Institucional |
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Cornish, C.R.Balsley, B.B.Woodman Pollitt, Ronald Francisco2016-11-08T00:41:19Z2017-12-21T19:41:42Z2016-11-08T00:41:19Z2017-12-21T19:41:42Z1980Cornish, C. R., Balsley, B. B., & Woodman, R. F. (1980). VHF doppler radar backscatter measurements through the entire neutral atmosphere (15-95 km) above Jicamarca, Perú.http://hdl.handle.net/20.500.12816/538The Jicamarca 50-MHz radar was used to obtain backscattered echoes through the entire atmosphere (0-100 km). Previous radar observations at VHF have shown a gap near the 35-55 km region, where the lack of echoes is attributed to a lack of radar sensitivity. By using the full Jicamarca antenna array and maximun transmitter power and by optimizing transmitter duty cycle through the implementation of complementary codes, doppler measurements display discernable peaks in the computed spectra from atmospheric signals in the gap region as well as above and below it. The results indicate that a minimum power-aperture threshold in excess of 1010 W-m2 is required in order to obtain backscatter echoes near 50 MHz through the entire neutral atmosphere.application/pdfengInstituto Geofísico del Perú, Radio Observatorio de Jicamarcainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licences/by/4.0/EchoesSignal processingRadarJicamarca Radio ObservatoryAntennashttp://purl.org/pe-repo/ocde/ford#1.05.01VHF doppler radar backscatter measurements through the entire neutral atmosphere (15-95 km) above Jicamarca, Peruinfo:eu-repo/semantics/workingPaperreponame:IGP-Institucionalinstname:Instituto Geofísico del Perúinstacron:IGPORIGINALVHF doppler radar backscatter measurements through the entire neutral atmosphere( 15-95 km) above.PDFapplication/pdf292374https://repositorio.igp.gob.pe/bitstreams/11b38a93-9c6d-418e-893c-11dcefc3c83a/download85e72ba4fa59bfac4de3172f56ab2fc5MD51LICENSElicense.txttext/plain1748https://repositorio.igp.gob.pe/bitstreams/70d45b0d-15b0-405c-8b28-ff22f68b57d6/download8a4605be74aa9ea9d79846c1fba20a33MD52THUMBNAILVHF doppler radar backscatter measurements through the entire neutral atmosphere( 15-95 km) above.PDF.jpgVHF doppler radar backscatter measurements through the entire neutral atmosphere( 15-95 km) above.PDF.jpgIM Thumbnailimage/jpeg32631https://repositorio.igp.gob.pe/bitstreams/d8545823-6c13-427a-859e-34334aa1056e/downloada20b545cc8e74a381721496d155bb2b7MD53TEXTVHF doppler radar backscatter measurements through the entire neutral atmosphere( 15-95 km) above.PDF.txtVHF doppler radar backscatter measurements through the entire neutral atmosphere( 15-95 km) above.PDF.txtExtracted texttext/plain32https://repositorio.igp.gob.pe/bitstreams/26df27e1-3d60-46cb-904c-a5ebb4232c2a/download70cf152f5dddabbf3e3e3a8bc23d0095MD5420.500.12816/538oai:repositorio.igp.gob.pe:20.500.12816/5382024-10-12 22:19:06.692https://creativecommons.org/licences/by/4.0/info:eu-repo/semantics/openAccessopen.accesshttps://repositorio.igp.gob.peRepositorio Geofísico Nacionalbiblio@igp.gob.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 |
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La información contenida en este registro es de entera responsabilidad de la institución que gestiona el repositorio institucional donde esta contenido este documento o set de datos. El CONCYTEC no se hace responsable por los contenidos (publicaciones y/o datos) accesibles a través del Repositorio Nacional Digital de Ciencia, Tecnología e Innovación de Acceso Abierto (ALICIA).
La información contenida en este registro es de entera responsabilidad de la institución que gestiona el repositorio institucional donde esta contenido este documento o set de datos. El CONCYTEC no se hace responsable por los contenidos (publicaciones y/o datos) accesibles a través del Repositorio Nacional Digital de Ciencia, Tecnología e Innovación de Acceso Abierto (ALICIA).