[PDF] Top 20 Meteor head echoes – observations and models
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Meteor head echoes – observations and models
... Abstract. Meteor head echoes – instantaneous echoes mov- ing with the velocities of the meteors – have been recorded since ...the meteor head echo process will be presented and ... See full document
5
VHF antenna pattern characterization by the observation of meteor head echoes
... Altogether, the estimated beam widths for the individual periods correspond well to the simulation, though a minor broadening can be distinguished. Broadening can be caused by amplitude tapering (typically used to gain ... See full document
9
Meteor observations with an MF radar
... of echoes in each bin was more than ...VHF meteor radar observations, where the number of meteors detected above 100 km is usually not enough to estimate wind ... See full document
9
MU head echo observations of the 2010 Geminids: radiant, orbit, and meteor flux observing biases
... specular meteor trail echoes, this is called the initial trail radius attenuation effect and was first described by Green- how and Hall (1960), who compared the altitude distributions of three radar systems ... See full document
11
A reassessment of SuperDARN meteor echoes from the upper mesosphere and lower thermosphere
... as meteor radars at near ranges. However, SuperDARN meteor echo measurements from all heights have typically been combined together to give a height-averaged picture of large-scale characteristics and ... See full document
15
The Geminid meteor shower during the ECOMA sounding rocket campaign: specular and head echo radar observations
... the meteor activity have two prominent minima in the time series. The meteor count rate was com- puted using a 4-h running window shifted by 30 ...the meteor count rate using shorter time win- dows ... See full document
15
Super Dual Auroral Radar Network observations of fluctuations in the spectral distribution of near range meteor echoes in the upper mesosphere and lower thermosphere
... weaker echoes can be ...under-dense echoes should be relatively constant. As the number of these echoes falls off in proportion to their intensity, the major- ity of these echoes will spend ... See full document
10
Super Dual Auroral Radar Network observations of fluctuations in the spectral distribution of near range meteor echoes in the upper mesosphere and lower thermosphere
... weaker echoes can be ...under-dense echoes should be relatively constant. As the number of these echoes falls off in proportion to their intensity, the major- ity of these echoes will spend ... See full document
12
Meteor echo height ceiling effect and mesospheric temperature estimation from meteor radar observations
... (KSS) meteor radar ...the meteor height distribution and temperature is in remarkable agreement with theoret- ical value derived from the physics-based equation and it is nearly time-invariant for the ... See full document
8
Observations of equatorial mesospheric winds over Cariri (7.4 (S) by a meteor radar and comparison with existing models
... northward component in the summer solstice. The south- ward component was maximum in winter for all heights from 82 to 98 km. Comparing with the models, we can comment that the CIRA describes very poorly the zonal ... See full document
13
Mesospheric winds derived from SuperDARN HF radar meteor echoes at Halley, Antarctica
... of meteor echoes observed during 1996 at ...underdense meteor echo is thus expected to lie within certain narrow limits; this parameter has therefore been used as a filter to exclude echoes ... See full document
5
Studies of meteor head echo signatures at polar latitudes
... for the MAARSY single frequency observations. In addition, combined optical obser- vations were also realized and a rst overview is shown in Brown et al. (2017). There it is shown that the observations t ... See full document
63
A meteor head echo analysis algorithm for the lower VHF band
... for meteor head echo observations by the ...a meteor- oid’s ablation process in the ...the meteor target and the an- gle from its trajectory to the radar beam into ... See full document
21
Determination of meteor-head echo trajectories using the interferometric capabilities of MAARSY
... Radar echoes coming from plasma irregularities surrounding the meteoroids are called meteor-head echoes, and can be detected by HPLA radar sys- ...these echoes were conducted with ... See full document
9
Radar detectability studies of slow and small zodiacal dust cloud particles. I. The case of Arecibo 430 MHz meteor head echo observations
... combining models of dust release from celestial bodies, orbital evolution, ablation, and ionization processes when dust particles encounter planetary atmospheres and ultimately by constraining these models ... See full document
20
Polar mesosphere summer echoes: a comparison of simultaneous observations at three wavelengths
... //modelweb.gsfc.nasa.gov/models/msis.html). In the present modelling we assume that plasma in the D- region is composed of the following constituents: free elec- trons, positive ions and positively charged ... See full document
10
Polar mesosphere summer echoes: a comparison of simultaneous observations at three wavelengths
... //modelweb.gsfc.nasa.gov/models/msis.html). In the present modelling we assume that plasma in the D- region is composed of the following constituents: free elec- trons, positive ions and positively charged ... See full document
11
ERG observations of drift echoes during a unique period of the satellite mission
... in models which characterize magnetospheric changes at all ...belts models. Therefore, such models which characterize magnetospheric changes at all MLT can include the smaller-scale fields of ... See full document
9
Finland HF and Esrange MST radar observations of polar mesosphere summer echoes
... radar observations of Antarctic upper meso- sphere summer echoes, being different from meteor echoes, have been recently reported by Ogawa et ...km) echoes were characterized by a ... See full document
9
Finland HF and Esrange MST radar observations of polar mesosphere summer echoes
... radar observations of Antarctic upper meso- sphere summer echoes, being different from meteor echoes, have been recently reported by Ogawa et ...km) echoes were characterized by a ... See full document
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