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Mostrando ítems 1-10 de 75
Drone-based polarization calibration source for mm-wave telescopes
(IEEE, 2021)
To probe alternative cosmologies, future CMB experiments will require an exquisite absolute polarization angle calibration. The scarce number natural polarized calibrators makes artificial alternatives appealing. Moreover, ...
Offline signal processing tools for electromagnetic compatibility applications
(Universidade Federal de Minas GeraisBrasilENG - DEPARTAMENTO DE ENGENHARIA ELÉTRICAPrograma de Pós-Graduação em Engenharia ElétricaUFMG, 2020-09-30)
Phase and pattern calibration of the Jicamarca Radio Observatory radar using satellites
(Royal Astronomical Society, 2014-12-08)
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 ...
Radio star scintillations at 50MHz. Produced by electrojet irregularities (Poster)
(Instituto Geofísico del Perú, Radio Observatorio de Jicamarca, 1994)
In connection with the Shoemaker-Levy comet collision with Jupiter, scans of Hydra-A, a radio star, was made with the Jicamarca large antenna array (50 MHz), for calibration purposes. The scans were made during the day ...
MAARSY multiple receiver phase calibration using radio sources
(Elsevier, 2014-10)
The Middle Atmosphere Alomar Radar System (MAARSY) on the Norwegian island of Andøya is a 53.5 MHz monostatic radar with an active phased array antenna. The total array consists of 433 3- element linearly polarized Yagi ...
ABSOLUTE CALIBRATION OF THE ERS-2 SCATTEROMETER IN GYRO-LESS MODE USING TRANSPONDERS
(Universidad de Concepción.Facultad de Ciencias Naturales y Oceanográficas., 2004)
Design of a multiport frequency reconfigurable antenna suitable for IMT-advanced communications systems
(Bogotá - Ingeniería - Doctorado en Ingeniería - Sistemas y ComputaciónUniversidad Nacional de Colombia - Sede Bogotá, 2018-12-07)
This thesis tackles the design, manufacture and validation of multi-port and frequency reconfigurable antennas intended for advanced communications applications. The main accomplishments of this thesis are: Extension of ...
Calibration of the Logarithmic-Periodic Dipole Antenna (LPDA) Radio Stations at the Pierre Auger Observatory using an Octocopter
(IOP Publishing, 2017-10)
An in-situ calibration of a logarithmic periodic dipole antenna with a frequency cover- age of 30 MHz to 80 MHz is performed. Such antennas are part of a radio station system used for detection of cosmic ray induced air ...
Platform calibration of an omnidirectional vision system composed of a camera and a conical mirrorCalibração da Plataforma de um Sistema de Visão Omnidirecional composto por uma Câmara e um Espelho Cônico
(2020-06-30)
Omnidirectional vision systems allow for a 360° imaging field and are applied in many areas of knowledge, including close range Photogrammetry. Obtaining reliable measurements, the Photogrammetry's goal, requires calibration ...