Browsing by Author "Espinoza, Juan C."

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    Construcción de un prototipo de radar meteorológico de banda X en el Perú
    (Instituto Geofísico del Perú, 2020-06) Espinoza, Juan C.; Valdez, Alexander; Ortecho, Daniel; Kuyeng, Karim; Scipión, Danny; Milla, Marco
    Se presentan los avances en el desarrollo del primer prototipo de radar meteorológico de banda X completamente desarrollado en el Perú. El sistema es compacto y transportable y cuenta con una antena parabólica de 1.2m de diámetro de doble polarización instalada sobre un posicionador, que permite el movimiento en azimut y elevación. Además, los sistemas de transmisión y recepción del radar están basados en tecnologías SDR (Software Defined Radio) para mayor flexibilidad en su configuración. El objetivo del radar es realizar mediciones de las precipitaciones en una determinada región, cubriendo un área de varias decenas de kilómetros alrededor del radar para así poder realizar investigaciones sobre las condiciones atmosféricas en esta región. La construcción de este prototipo viene siendo realizada por el Instituto Geofísico del Perú, en su sede del Radio Observatorio de Jicamarca, y es financiada por el fondo para intervenciones ante la ocurrencia de desastres naturales (FONDES) del Instituto Nacional de Defensa Civil (INDECI).
    Palabras clave:Radar meteorológicoPrecipitaciónLluvia
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    Dataset on the first weather radar campaign over Lima, Perú
    (Elsevier, 2021-04) Valdivia Prado, Jairo Michael; Scipión, Danny; Milla, Marco; Prado, Josep J.; Espinoza, Juan C.; Cordova, Darwin; Saavedra Huanca, Miguel; Villalobos Puma, Elver Edmundo; Callañaupa Gutierrez, Stephany Magaly; Silva Vidal, Yamina
    The first weather radar campaign over Lima, the capital of Peru, a desertic area on the western side of the Peruvian Andes, was carried out to study the occurrence of rain events in summer 2018. The weather radar was installed strategically and was able to overlook three river basins: Rimac, Chillón, and Lurin. An X-band radar (PX-1000) was used, which operates at 9.55 GHz. PX-1000 was built by the Advanced Radar Research Center (ARRC) at the University of Oklahoma (U.S.A.). The radar operated from January 26th to April 1st, 2018, at Cerro Suche located 2910 m ASL and 55 km from the city of Lima. The PX-1000 performed plan-position indicators (PPI) for elevations starting at 0° up to 20°. The data presented here were obtained using a three-dimensional constant-altitude plan position-indicator (3D CAPPI), which was generated by high resolution (250 m) nearest point algorithm.
    Palabras clave:X-band radarHigh-resolution3D CAPPI
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    Jicamarca Radio Observatory 2021 Status
    (Instituto Geofísico del Perú, 2021-06) Milla, Marco; Kuyeng, Karim; Espinoza, Juan C.; De la Jara, César
    The Jicamarca Radio Observatory is a research facility of the Geophysical Institute of Peru dedicated to the study of the equatorial ionosphere and upper atmosphere. It is located near the city of Lima, Peru. Its main instrument is one of the largest Incoherent Scatter radars in the World. This presentation explains: Jicamarca radar status, news about AMISR14 and SIMONe and radar upgrade progress.
    Palabras clave:Jicamarca Radio ObservatoryJicamarca radarIonospheric radar
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    Jicamarca Radio Observatory status during COVID-19
    (Instituto Geofísico del Perú, 2020-06-25) Milla, Marco; Kuyeng, Karim; Espinoza, Juan C.; De la Jara, César
    In this presentation, Dr. Marco Milla, director of the Jicamarca Radio Observatory, explained the state of the Jicamarca radar and the progress in the improvements that will be implemented to increase its capabilities. This seeks to develop new experiments and attract new users for the radar.
    Palabras clave:Jicamarca Radio ObservatoryJicamarca radarIonospheric radar
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    LISN network: tools for GPS data processing and managing
    (Instituto Geofísico del Perú, 2013) Espinoza, Juan C.; Valladares, Cesar
    The LISN network includes several GPS receivers installed around South America as a distributed observatory with the purpose of study the ionospheric phenomena. All of these receivers send data every 15 minutes to a central server located at Lima – Peru.
    Palabras clave:Global positioning systemImage processingIonosphere
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    Observaciones de la ionósfera utilizando la red GPS del proyecto LISN
    (Instituto Geofísico del Perú, 2010) Espinoza, Juan C.; De la Jara, César; Valladares, César
    Diapositivas presentadas en el Encuentro Científico Internacional, ECI-2010, celebrado en Lima, Perú.
    Palabras clave:IonósferaSistemas de posicionamiento globalElectrones
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    SOPHy: Scanning-system for Observations of Peruvian Hydrometeorological-events
    (IEEE, Institute of Electrical and Electronics Engineers, 2021) Espinoza, Juan C.; Scipión, Danny; Valdez, Alexander; Verástegui, Joaquín
    In this paper we present the current progress in the construction of the first X-band dual-pol mobile weather radar (SOPHy) in Peru. This portable mobile system allows scans in azimuth and elevation with a maximum range of 60 km. The radar transmission and reception systems are based on SDR (Software Defined Radio) technologies for configuration flexibility. The objective of the radar is to study precipitation in an area of several tens of kilometers around the radar, in order to research the climate and atmospheric conditions in Peru.
    Palabras clave:Weather radarSDR (software defined radio)Signal Processing