Results 101 to 110 of about 20,282 (172)
Urbana radar systems: Possibilities and limitations [PDF]
The Aeronomy Laboratory Field Station of the University of Illinois at Urbana contains three different radar systems capable of probing various regions of the atmosphere below about 100 km.
Royrvik, O.
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地球与行星物理论评Meteoroids entering the Earth's atmosphere lose most of their mass during atmospheric passage and considerably disturb the background ionosphere. To elucidate better the effects of meteoroids on the near-Earth space environment, it is important to ...
Yi Li +13 more
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Distributions of Orbital Elements for Meteoroids on Near-Parabolic Orbits According to Radar Observational Data [PDF]
Some results of the International Heliophysical Year (IHY) Coordinated Investigation Program (CIP) number 65 Meteors in the Earth Atmosphere and Meteoroids in the Solar System are presented.
Kolomiyets, S. V.
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On the spatial structure of the Perseids meteor stream [PDF]
The analysis of radar observations of the Perseid meteor stream conducted in an ionospherical laboratory in the period from 1964 to 1981 is presented. The Perseids meteor rates were determined by the fluctuation method.
Andreev, G. V. +2 more
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Optical and Radar Measurements of the Meteor Speed Distribution [PDF]
The observed meteor speed distribution provides information on the underlying orbital distribution of Earth-intersecting meteoroids. It also affects spacecraft risk assessments; faster meteors do greater damage to spacecraft surfaces.
Brown, P. G. +4 more
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Wind regime peculiarities in the lower thermosphere in the winter of 1983/84 [PDF]
Temporal variations of prevailing winds at 90 to 100 km obtained from measurements carried out in winter 1983 to 1984 at three sites in the USSR and two sites in East Germany are reported.
Greisiger, K. M. +6 more
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Automatic Detection and Identification of Underdense Meteors Based on YOLOv8n-BP Model
Remote SensingEvery day, millions of meteoroids enter the atmosphere and ablate, forming a long plasma trail. It is a strongly scattering object for electromagnetic waves and can be effectively detected by meteor radar at altitudes between 70 km and 140 km.
Siyuan Chen +4 more
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Analysis of ALTAIR 1998 Meteor Radar Data [PDF]
We describe a new analysis of a set of 32 UHF meteor radar traces recorded with the 422 MHz ALTAIR radar facility in November 1998. Emphasis is on the velocity measurements, and on inferences that can be drawn from them regarding the meteor masses and ...
Close, S. +4 more
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Historical aspects of radar atmospheric dynamics [PDF]
A review of the history of radar techniques which have been applied to atmospheric observation is given. The author starts with ionosphere observation with the ionosonde, symbolizing as it does the earliest history of radar observation, and proceeds to ...
Kato, Susumu
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