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Showing 1 to 16 of 16 for “"Jicamarca"”.
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Incoherent scatter modeling of Jicamarca radar spectra
… the topside equatorial ionosphere probed by the Jicamarca Incoherent Scatter Radar (ISR) located near Lima, Peru. The topside equatorial ionosphere is a multi-ion plasma and the spectrum of its electron density irregularities can be modeled by extending the single-ion spectral model developed by …
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Mesospheric wind estimation with the Jicamarca MST radar
Jicamarca radar located in Peru is used to probe the equatorial mesosphere by scattering 50 MHz pulse transmissions from mesospheric turbulent layers; the pulse returns are detected by the radar antenna and subsequently spectral analyzed. This thesis describes the Jicamarca radar con figuration …
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Stratospheric scattering of radio waves and the Jicamarca radio telescope
… procedures used in previous experiments at the Jicamarca Radio Observatory are examined in detail, and are found to require modification in some cases. The theory of phased arrays is presented, and the correct and complete array factor pertinent to the Jicamarca antenna is derived. Information …
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Spectral processing and wind estimation with Jicamarca mesospheric radar data
… radar measurement of the mesosphere above the Jicamarca Radio Observatory in the 1970s, advancement in computing has allowed for increasingly complex processing on increasingly large sets of data. These advances have allowed for more accurate processing techniques to be applied to more data …
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Solar flare effects observed over Jicamarca during MST-ISR experiments
A study of solar flare effects observed at the Jicamarca Radio Observatory (JRO) will be presented. The observations were made while the Jicamarca radar was conducting combined observations in mesosphere-stratosphere-troposphere (MST) and incoherent scatter radar (ISR) modes. Combined MST-ISR …
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Simultaneous observations of meteors and the equatorial electrojet at Jicamarca
Observations of meteor echoes at Jicamarca in August of 1990, 1991, and 1992 reveal some unusual properties. The echo durations are very long ($\sim$2 s to 3 minutes), radio wave scattering is non-specular (echoes are detected simultaneously over an $\sim$10 to 15 km altitude range centered about …
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Remote Sensing of the Mesosphere Using the Jicamarca Incoherent-Scatter Radar
Made available in DSpace on 2014-12-12T20:54:10Z (GMT). No. of bitstreams: 1 7524387.pdf: 8450797 bytes, checksum: 0bec28cc661cc24643ef4e724614b8c6 (MD5) Previous issue date: 1975
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An Inverse Theory Approach to Incoherent Scatter Drift and Temperature Estimation at the Jicamarca Radio Observatory
… applying this technique to data obtained at the Jicamarca Radio Observatory we have discovered the existence of a westward traveling post sunset vortex which we report in this thesis. In an effort to improve our understanding of the width parameter of the incoherent scatter signal spectrum, we …
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Study of Coulomb collisions and magneto-ionic propagation effects on incoherent scatter radar measurements at Jicamarca
… of the equatorial ionosphere carried out at the Jicamarca Radio Observatory (Lima, Peru) using antenna beams pointed perpendicular to the Earth's magnetic field B. A Monte Carlo procedure based on the simulation of charged particle trajectories in a magnetized plasma (with suppressed collective …
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Calibration of Jicamarca radar using F-region incoherent scatter for measurements of D-region backscatter RCS
… of mesospheric radar echoes observed at the Jicamarca Radio Observatory in Perú. Radar system calibration is accomplished by simulating the propagation of transmitted and backscattered radio waves through the ionosphere and comparing the simulated power returns to the measurements. The …
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Study of waves observed in the equatorial ionospheric valley region using Jicamarca ISR and VIPIR ionosonde
… radar) data were taken concurrently at Jicamarca during campaigns of January, April, June, and July 2015, January 2016, and most recently April 2017 to bring more insight into the state and dynamics of the ionospheric E-F valley region and the 150-km radar echoes detected from this …
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Investigation of Radar Interferometric Techniques With Application to the Atmosphere
… demonstrated with the spread-F data collected at Jicamarca Radio Observatory, located near Lima, Peru. The zonal and vertical components of the drift velocity of distinct irregularity patches within the radar field of view are estimated using a combination of Doppler and image evolution …
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Radar observations of field-aligned plasma propagations associated with NASA's PMG experiment
… field lines. VHF radars in Hilo, Hawaii and Jicamarca, Peru recorded observations of these field-aligned disturbances as part of the experiment. Based on analysis of these radar observations and tracking data of PMG's orbit, the effective propagation velocity of these traveling plasma …
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Improved Intermittent Clutter Filtering For Wind Profiler Radar
… developed since the first demonstration with the Jicamarca radar by Woodman and Guillen in the early 1970s. Currently, there exist several operational networks of those instruments in the USA, Europe and Japan which provide continuous wind measurements in real-time and most of the data are …
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Innovación y dosis en la implementación del programa Edúcame Primero Perú para la reducción del trabajo infantil
… en la periferia de Lima, Villa el Salvador y Jicamarca. En esta tesis doctoral se analiza la implementación del programa y se describen los resultados del trabajo con 151 menores participantes, sus familias y sus docentes, durante 10 meses de intervención. La información de los menores y su …
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Near-optimal inversion of incoherent scatter radar measurements: coding schemes, processing techniques, and experiments
… to other incoherent scatter radars (such as Jicamarca radar in Peru, and advanced modular incoherent scatter radar in Alaska) to improve the estimation task in other altitude and latitude regions, and to extract many further ionospheric parameters such as electric field strength, …