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dc.contributor.author Gao, B.
dc.contributor.author Mathews, J. D.
dc.coverage.spatial Jicamarca
dc.coverage.spatial Lima
dc.coverage.spatial Perú
dc.date.accessioned 2018-11-15T15:17:36Z
dc.date.available 2018-11-15T15:17:36Z
dc.date.issued 2014-12-08
dc.identifier.citation Gao, 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/stu2177 es_ES
dc.identifier.uri http://hdl.handle.net/20.500.12816/3621
dc.description.abstract The 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.format application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher Royal Astronomical Society es_ES
dc.relation.ispartof urn:issn:0035-8711
dc.rights info:eu-repo/semantics/restrictedAccess es_ES
dc.subject Jicamarca Radio Observatory es_ES
dc.subject Artificial satellites es_ES
dc.subject Meteors es_ES
dc.subject Doppler effect es_ES
dc.subject Antennas es_ES
dc.subject Calibration es_ES
dc.title Phase and pattern calibration of the Jicamarca Radio Observatory radar using satellites es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.05.01 es_ES
dc.identifier.journal Monthly Notices of the Royal Astronomical Society es_ES
dc.description.peer-review Por pares es_ES
dc.identifier.doi https://doi.org/10.1093/mnras/stu2177 es_ES

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