Results 131 to 140 of about 1,770 (180)

Inner Workings: Networks of cameras are tracking meteorites with unprecedented precision. [PDF]

Proc Natl Acad Sci U S A, 2017
Venton D.
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Present-day vertical land motions (VLM) of the Chesapeake Bay region derived from robust network imaging of global navigation satellite system (GNSS) observations. [PDF]

Sci Rep
Williams K, Stamps DS, Duda J, Kreemer C, Moore WB, Hensel P, Herring T, McKenna TE, Kronebusch M, Walters DC, Carr J.   +10 more
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Automated Detection of Meteorite Strewnfields in Doppler Weather Radar. [PDF]

Planet Space Sci, 2017
Hankey M, Fries M, Matson R, Fries J.
europepmc   +1 more source

Large scale summarization using ensemble prompts and in context learning approaches. [PDF]

Sci Rep
Leiva-Araos A, Gana B, Allende-Cid H, García J, Saikia MJ.   +4 more
europepmc   +1 more source

Dynamics, chemistry, and modeling studies in the aviation and aerospace transition zone. [PDF]

Innovation (Camb)
Sheng Z, He Y, Wang S, Chang S, Leng H, Wang J, Zhang J, Wang Y, Zhang H, Sui H, Song Y, Wu G, Guo S, Chai J, Feng W, Song J.   +15 more
europepmc   +1 more source

Radar investigation of meteors of subvisual magnitudes

The Astronomical Journal, 1964
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Ulysses spacecraft in situ detections of cometary dust trails. [PDF]

Philos Trans A Math Phys Eng Sci
Krüger H, Strub P, Grün E.
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METEOR RADAR STATISTICS. II

Canadian Journal of Physics, 1964
Mean daily values of meteor flux for three categories of meteor echoes are tabulated for the period 1958 to 1962. The variation of echo rate with echo duration is studied. The difficulty of using this relation to determine the mass distribution of meteoroids in interplanetary space is noted.
Peter M. Millman, Bruce A. McIntosh
openaire   +1 more source

Radar observations of meteors

Proceedings of the Physical Society, 1947
An investigation of short-duration radio echoes observed at 4 to 5 metres wavelength in the neighbourhood of the E region of the ionosphere is described. Observations by vertical beam radio equipments showed that the echoes occurred most frequently at a height of about 95 km.
J S Hey, G S Stewart
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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
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