Results 131 to 140 of about 20,282 (172)
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Radar observations of meteor deceleration
Journal of Geophysical Research, 1966By using a narrow-beam high-power radar operating at 68 cm it has been possible to detect meteors traveling radially toward the radar. In these observations the antenna is directed at the radiant point of an intense meteor shower, and the receiver is tuned to the expected Doppler-shifted signal.
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Complex Plane Specular Meteor Radar Interferometry
Radio Science, 2018AbstractThis paper presents a solution to the problem of specular meteor radar interferometry cast on the complex plane. This technique is applicable to all meteor radars at the output of the receiver's pulsed Doppler signal processing chain. Specular meteor trail radar echoes are modeled as exponentially decaying sinusoids impinging on a sparse ...
Cody V. Vaudrin +2 more
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Optical radar results and meteoric fragmentation
Journal of Geophysical Research, 1964Recent optical radar experiments utilizing a ruby laser as the source of radiation have indicated the existence of a scattering layer in the upper atmosphere at an altitude between 110 and 140 km. The echoes have been tentatively interpreted in accordance with a model of meteoric fragmentation and have been related to other experimental results.
G. Fiocco, G. Colombo
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Infrasound from a radar-observed meteor
Canadian Journal of Physics, 1976The shock wave produced by the hypersonic entry of a sufficiently large meteoroid into the earth's atmosphere should be detectable at ground level. An array of microbarographs operated at Springhill Meteor Observatory recorded pressure waves on December 14, 1974, believed to be associated with a large meteor detected by the Springhill radars. The time
B. A. McIntosh +2 more
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Passive radar interferometry of meteor trails
2014 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM), 2014We discuss the development of single site passive radar interferometry for the RAPID (Radio Array of Portable Interferometric Detectors) project and its application to the detection of meteor trails. We utilize antennas developed for the low frequency portion of the square kilometer array (SKALA) which are zenith pointing and cover the FM band.
Shayan Sohbatzadeh +3 more
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Proceedings of the XXXVth URSI General Assembly and Scientific Symposium – GASS 2023, 2023
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The Grahamstown all-sky meteor radar
Journal of Atmospheric and Terrestrial Physics, 1988Abstract A coherent-wave meteor radar system which has been in operation at Grahamstown since April 1986 is described, and some results obtained to date briefly reviewed. The radar is of the monostatic type, operating at a fixed frequency near 28 MHz, square-wave modulated at 500 Hz.
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment
Ca-A Cancer Journal for Clinicians, 2022Jun J Mao,, Msce +2 more
exaly
RADAR EQUIPMENT FOR CONTINUOUS METEOR OBSERVATIONS
Canadian Journal of Physics, 1966The specifications and the component parts of a 20-kW meteor radar working at about 33 Mc/sec are described. In the design of this equipment special attention was given to long-term use and constancy of performance. Serviceability characteristics are noted for 8 years of continuous use.
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