Results 11 to 20 of about 20,282 (172)

Effect of neutral winds on the creation of non-specular meteor trail echoes [PDF]

Annales Geophysicae, 2021
Non-specular meteor trail echoes are radar reflections from plasma instabilities that are caused by field-aligned irregularities. Meteor simulations are examined to show that these plasma instabilities, and thus the associated meteor trail echo, strongly
F. Galindo, J. Urbina, L. Dyrud
doaj   +1 more source

Influence of Meteor Count on Wind Field Retrieved by All-Sky Meteor Radar

Atmosphere, 2023
The all-sky meteor radar is an important means to detect 70–110 km wind fields. Previous studies have shown that the wind field retrieved by all-sky meteor radars is closely related to the meteor count detected by the radar. However, the precision of the
Xiaojing Hao, Yu Ma, Zonghua Ding, Libin Wang, Na Li, Jinsong Chen   +5 more
doaj   +1 more source

Resolving the ambiguous direction of arrival of weak meteor radar trail echoes [PDF]

Atmospheric Measurement Techniques, 2021
Meteor phenomena cause ionized plasmas that can be roughly divided into two distinctly different regimes: a dense and transient plasma region co-moving with the ablating meteoroid and a trail of diffusing plasma left in the atmosphere and moving with the
D. Kastinen, D. Kastinen, J. Kero, A. Kozlovsky, M. Lester   +4 more
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Meteor radar observations of polar mesospheric summer echoes over Svalbard [PDF]

Atmospheric Measurement Techniques, 2021
A 31 MHz meteor radar located in Svalbard was used to observe polar mesospheric echoes (PMSEs) during summer 2020. Data from 19 July were selected for detailed analysis, with a focus on extracting additional information to characterize the atmosphere in ...
J. P. Younger, J. P. Younger, I. M. Reid, I. M. Reid, C. L. Adami, C. M. Hall, M. Tsutsumi   +6 more
doaj   +1 more source

First Comparative Analysis of the Simultaneous Horizontal Wind Observations by Collocated Meteor Radar and FPI at Low Latitude through 892.0-nm Airglow Emission

Remote Sensing, 2021
The Fabry–Pérot interferometer (FPI) and meteor radar are two important techniques for measuring the horizontal wind field in mesopause region, the observations of which still lack comprehensive comparison.
Shengyang Gu, Xin Hou, Na Li, Wen Yi, Zonghua Ding, Jinsong Chen, Guoyuan Hu, Xiankang Dou   +7 more
doaj   +1 more source

NEW CHUNG-LI METEOR RADAR IN TAIWAN – PRELIMINARY RESULTS [PDF]

Proceedings on Engineering Sciences
A new 39.9 MHz meteor radar was implemented in 2022 in Jhongli area, Taiwan, which is operated by National Central University in Taiwan and referred to as Chung-Li meteor radar. This radar is a bistatic radar with transmitter and receiver systems located
Ching-Lun Su , Po-Hsun Chiu , Ruey-Ming Kuong , Hsyang-Chan Chen, Yen-Hsyang Chu , A. Narendra Babu , P. S. Brahmanandam   +6 more
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A Machine Learning Algorithm to Detect and Analyze Meteor Echoes Observed by the Jicamarca Radar

Remote Sensing, 2023
We present a machine-learning approach to detect and analyze meteor echoes (MADAME), which is a radar data processing workflow featuring advanced machine-learning techniques using both supervised and unsupervised learning.
Yanlin Li, Freddy Galindo, Julio Urbina, Qihou Zhou, Tai-Yin Huang   +4 more
doaj   +1 more source

Interferometric meteor radar phase calibration using meteor echoes [PDF]

Radio Science, 2004
A technique for the phase calibration of interferometric meteor radar systems is presented. This technique uses phase differences of meteor echoes measured between spaced receiving antennas. The technique can be applied to data collected during routine observations, effectively allowing self phase calibration without the need for additional hardware or
Holdsworth, D., Tsutsumi, M., Reid, I., Nakamura, T., Tsuda, T.   +4 more
openaire   +2 more sources

A comparative study of mesospheric zonal wind observations from Na lidar and multistatic meteor radars above Hefei, China [PDF]

Atmospheric Measurement Techniques
This study compares zonal wind measurements from a Na lidar at the University of Science and Technology of China (USTC) with those from the multistatic meteor radar system near Hefei, China.
C. Ban, C. Ban, X. Fang, W. Yi, W. Yi, W. Yi, J. Zeng, J. Zeng, J. Zeng, G. Stober, W. Pan, W. Pan, W. Pan, T. Li, T. Li, X. Xue, X. Xue, X. Xue   +17 more
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MU head echo observations of the 2010 Geminids: radiant, orbit, and meteor flux observing biases [PDF]

Annales Geophysicae, 2013
We report Geminid meteor head echo observations with the high-power large-aperture (HPLA) Shigaraki middle and upper atmosphere (MU) radar in Japan (34.85° N, 136.10° E).
J. Kero, C. Szasz, T. Nakamura
doaj   +1 more source