Phase and pattern calibration of the Jicamarca Radio Observatory radar using satellites

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dc.contributor.authorGao, B.
dc.contributor.authorMathews, J. D.
dc.coverage.spatialJicamarca
dc.coverage.spatialLima
dc.coverage.spatialPerú
dc.date.accessioned2018-11-15T15:17:36Z
dc.date.available2018-11-15T15:17:36Z
dc.date.issued2014-12-08
dc.description.abstractThe Jicamarca Radio Observatory (JRO) main 50-MHz array antenna radar system with multiple receivers is being used to study meteors via two interferometric receiving modes. One of the major challenges in these studies is the phase calibration of the various receiver (interferometric) channels (legs). While investigating some ambiguous features in meteor head-echo results, we developed a ‘new’ calibration technique that employs satellite observations to produce more accurate phase and pattern measurements than were previously available. This calibration technique, which resolves head-echo ambiguities, uses the fact that Earth-orbiting satellites are in gravitationally well-defined orbits and thus the pulse-to-pulse radar returns must be consistent (coherent) for an entire satellite pass through the radar beam. In particular, the satellite yields a reliable point source for phase and thus interferometry-derived range, Doppler and trajectory calibration. Using several satellites observed during standard meteor observations, we derive satellite orbital parameters by matching the observed and modelled three-dimensional trajectory and Doppler results. This approach uncovered subtle phase distortions that led to interferometry-derived trajectory distortions that are important only to point targets such as meteor head-echoes. We present the array calibration and radar imaging of satellite passes from our meteor observations of 2010 April 15/16. Future observations of a priori known satellites would likely yield significantly more accurate calibrations, especially of distant side lobes.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationGao, B., & Mathews, J. D. (2014). Phase and pattern calibration of the Jicamarca Radio Observatory radar using satellites.==$Monthly Notices of the Royal Astronomical Society, 446$==(4), 3416-3426. https://doi.org/10.1093/mnras/stu2177es_ES
dc.identifier.doihttps://doi.org/10.1093/mnras/stu2177es_ES
dc.identifier.journalMonthly Notices of the Royal Astronomical Societyes_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/3621
dc.language.isoenges_ES
dc.publisherRoyal Astronomical Societyes_ES
dc.relation.ispartofurn:issn:0035-8711
dc.rightsinfo:eu-repo/semantics/restrictedAccesses_ES
dc.subjectJicamarca Radio Observatoryes_ES
dc.subjectArtificial satelliteses_ES
dc.subjectMeteorses_ES
dc.subjectDoppler effectes_ES
dc.subjectAntennases_ES
dc.subjectCalibrationes_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.01es_ES
dc.titlePhase and pattern calibration of the Jicamarca Radio Observatory radar using satelliteses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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