Results 141 to 150 of about 568 (186)

Antarctic meteor observations using the Davis MST and meteor radars

Advances in Space Research, 2008
Abstract This paper presents the meteor observations obtained using two radars installed at Davis (68.6°S, 78.0°E), Antarctica. The Davis MST radar was installed primarily for observation of polar mesosphere summer echoes, with additional transmit and receive antennas installed to allow all-sky interferometric meteor radar observations.
David A Holdsworth, Damian J Murphy, Iain Reid   +2 more
exaly   +3 more sources

Techniques for Measuring Radar Meteor Speeds

Earth, Moon, and Planets, 2004
We compare the results from the application of four different methods to determine the speed of meteoroids from single station radar data. The methods used are the pre-t 0 amplitude, post-t 0 amplitude, pre-t 0 phase and the Fresnel transform (FT) methods. Speeds from the first three methods are compared to the FT method since, requiring the use of the
W. J. Baggaley, J. Grant
openaire   +1 more source

The observations of Kunming meteor radar and height distribution of meteor

Proceedings of the 9th International Symposium on Antennas, Propagation and EM Theory, 2010
Based on the meteor radar, one can study the radiant distribution and the time variant of meteors, investigate space debris and predict the passage time of meteor showers, and so on. By observation of the Kunming meteor radar, the observation data of meteor decay time and the ambipolar diffusion coefficient are consistent with the theories.
null Yun Liu, null Ya-Bin, null Zhang Lei, null Zhao Jin-Song, null Chen Bin Xu, null Kun Xue   +5 more
openaire   +1 more source

The Canadian Meteor Orbit Radar Meteor Stream Catalogue

Earth, Moon, and Planets, 2007
The Canadian Meteor Orbit Radar is a multi-frequency backscatter radar which has been in routine operation since 1999, with an orbit measurement capability since 2002. In total, CMOR has measured over 2 million orbits of meteoroids with masses greater than 10 μg, while recording more than 18 million meteor echoes in total.
Peter Brown, Robert J. Weryk, Daniel K. Wong, James Jones   +3 more
openaire   +1 more source

Radar Detection of Meteor Trails

Nature, 1946
IN the course of ionospheric observations made during the International Polar Year 1932–33, a transient type of radio echo was observed from levels in the upper atmosphere about 100 km. above the ground. Such echoes were found to last only a second or two and were noted to be equally frequent both by day and by night.
EDWARD APPLETON, R. NAISMITH
openaire   +1 more source

The French meteor radar facility

Journal of Atmospheric and Terrestrial Physics, 1978
Abstract A brief history of the meteor radars developed by the National Center for Telecommunication Studies is followed by a description of the equipment and data analysis techniques. Details are given of the simultaneously measured radio meteor winds over Garchy, France (47°N, 3°E) and Kiruna, Sweden (68°N, 20°E) during August 1974, and over Garchy
M. Glass, R. Bernard, J.L. Fellous, M. Massebeuf   +3 more
openaire   +1 more source

SDR-based radar system for meteor detection

2009 16th International Conference on Digital Signal Processing, 2009
The idea of monitoring atmospheric events using radio waves has been implemented in the past. The concept has also been employed to detect meteors, that is, ionized trails created by meteors. The approach exploits the property of ionized trails to reflect radio waves and the use of bistatic radar and forward scattering. In this paper we present a setup
Subodh Chiwate, Zejie Zhang, Kevin Mernick, Bingxin Shen, Dima Vavilov, Mónica F. Bugallo, Petar M. Djuric, Michael Marx, Helio Takai   +8 more
openaire   +1 more source

A meteor orbit radar

1991
A Meteor Orbit Radar, AMOR, has been built near Christchurch, New Zealand. It uses a narrow beam pulsed radar to detect meteors down to a + 12.5 radio-meteor magnitude limit. AMOR measures the relative timelags between the onset of meteor echoes at each of three spaced receiver stations to calculate the meteoroid velocity with an accuracy of ±2.5 km.s ...
openaire   +2 more sources

Radar observations of meteor deceleration

Journal of Geophysical Research, 1966
By 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.
openaire   +1 more source

Time–Frequency Radar Processing for Meteor Detection

IEEE Transactions on Geoscience and Remote Sensing, 2004
In this paper, we present signal processing techniques to detect meteor returns from Arecibo Observatory 430-MHz UHF radar data. We exploit the characteristics of the transmit waveform in the frequency domain as well as in the time domain. Two detection methods are investigated.
Chun-Hsien Wen, John F. Doherty, John D. Mathews   +2 more
openaire   +1 more source