Results 71 to 80 of about 134,109 (102)

Radar for Europa Assessment and Sounding: Ocean to Near-Surface (REASON). [PDF]

Space Sci Rev
Blankenship DD, Moussessian A, Chapin E, Young DA, Wesley Patterson G, Plaut JJ, Freedman AP, Schroeder DM, Grima C, Steinbrügge G, Soderlund KM, Ray T, Richter TG, Jones-Wilson L, Wolfenbarger NS, Scanlan KM, Gerekos C, Chan K, Seker I, Haynes MS, Barr Mlinar AC, Bruzzone L, Campbell BA, Carter LM, Elachi C, Gim Y, Hérique A, Hussmann H, Kofman W, Kurth WS, Mastrogiuseppe M, McKinnon WB, Moore JM, Nimmo F, Paty C, Plettemeier D, Schmidt BE, Zolotov MY, Schenk PM, Collins S, Figueroa H, Fischman M, Tardiff E, Berkun A, Paller M, Hoffman JP, Kurum A, Sadowy GA, Wheeler KB, Decrossas E, Hussein Y, Jin C, Boldissar F, Chamberlain N, Hernandez B, Maghsoudi E, Mihaly J, Worel S, Singh V, Pak K, Tanabe J, Johnson R, Ashtijou M, Alemu T, Burke M, Custodero B, Tope MC, Hawkins D, Aaron K, Delory GT, Turin PS, Kirchner DL, Srinivasan K, Xie J, Ortloff B, Tan I, Noh T, Clark D, Duong V, Joshi S, Lee J, Merida E, Akbar R, Duan X, Fenni I, Sanchez-Barbetty M, Parashare C, Howard DC, Newman J, Cruz MG, Barabas NJ, Amirahmadi A, Palmer B, Gawande RS, Milroy G, Roberti R, Leader FE, West RD, Martin J, Venkatesh V, Adumitroaie V, Rains C, Quach C, Turner JE, O'Shea CM, Kempf SD, Ng G, Buhl DP, Urban TJ.   +108 more
europepmc   +1 more source

The mesosphere and metals: chemistry and changes. [PDF]

Chem Rev, 2015
Plane JM, Feng W, Dawkins EC.
europepmc   +1 more source

Characterization of the Surfaces and Near-Surface Atmospheres of Ganymede, Europa and Callisto by JUICE. [PDF]

Space Sci Rev
Tosi F, Roatsch T, Galli A, Hauber E, Lucchetti A, Molyneux P, Stephan K, Achilleos N, Bovolo F, Carter J, Cavalié T, Cimò G, D'Aversa E, Gwinner K, Hartogh P, Huybrighs H, Langevin Y, Lellouch E, Migliorini A, Palumbo P, Piccioni G, Plaut JJ, Postberg F, Poulet F, Retherford K, Rezac L, Roth L, Solomonidou A, Tobie G, Tortora P, Tubiana C, Wagner R, Wirström E, Wurz P, Zambon F, Zannoni M, Barabash S, Bruzzone L, Dougherty M, Gladstone R, Gurvits LI, Hussmann H, Iess L, Wahlund JE, Witasse O, Vallat C, Lorente R.   +46 more
europepmc   +1 more source

Current and Near-Term Earth-Observing Environmental Satellites, Their Missions, Characteristics, Instruments, and Applications. [PDF]

Sensors (Basel)
Ustin SL, Middleton EM.
europepmc   +1 more source

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Real-Time Techniques for Interpretation of Ionospheric Backscatter Sounding Data

Radio Science, 2019
AbstractWe present techniques and algorithms for automatic processing and interpretation of data of ionospheric backscatter sounding (BS) using a continuous chirp signal. Experimental ionograms are processed based on data filtration with further compression using the cellular automaton method.
Vladimir Kurkin, Maksim Penzin, Sergey Ponomarchuk   +2 more
exaly   +2 more sources

Investigation of Low-Latitude Ionospheric Field-Aligned Irregularities by Oblique Backscatter Sounding

IEEE Geoscience and Remote Sensing Letters, 2010
The ionosphere is not homogeneous, hosting many irregularities with different scales from dozens of meters to dozens of kilometers. The observation and formation mechanism of the irregularities is among the most active domains for understanding the influence of irregularities on propagation of radio waves.
Yuannong Zhang, Zhengyu Zhao
exaly   +3 more sources

Development of a Method for Determining the Position of Artificial Ionospheric Irreguliarities Responsible for the Radio-Wave Aspect-Angle Scattering on Short Paths by Oblique Backscatter Sounding Ionograms

Izvestiya vysshikh uchebnykh zavedenii. Radiofizika, 2021
The data of experiments on the oblique backscatter sounding of the heated ionospheric volume above the Sura facility on a short Kazan—Vasilsursk—Kazan path, when the Cyclone-GPS ionosonde was operated in the ionogram recording regime in the frequency range 1–7 MHz with a step of about 20 kHz are compared with the results of ray-tracing calculations for
N.A. Pogorelko, E.N. Sergeev, S.M. Grach, E.Yu. Zykov   +3 more
openaire   +2 more sources

The Real-Time Diagnostics of HF Radio Channel on the Base of Ionospheric Backscatter Sounding Data

2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science, 2020
The method of real-time diagnostics for decameter radio channel on the base ionosphere backscatter sounding data by continuous chirp signal is presented. The method is based on the extraction of the backscatter signal leading edge under processing and interpretation of experimental ionograms.
Vladimir Kurkin
exaly   +2 more sources

Inversion of Ionospheric Sounding Data From an HF Backscatter Radar

Inverse Problems and Theoretical Imaging, 1990
For radio waves in the high-frequency band (6–30 MHz), the ionospheric plasma is a refractive medium, with an index which depends on local electron density. HF backscatter radars can use this property to take soundings of the ionosphere by transmitting radio pulses at low elevation angles (see fig. 1).
F Gauthier
exaly   +2 more sources

A Novel Ionospheric Oblique-Incidence Sounding Network Consisting of the Ionospheric Oblique Backscatter Sounder and the Parasitic Oblique-Incidence Sounder

IEEE Geoscience and Remote Sensing Letters, 2015
In this letter, a novel ionospheric oblique-incidence sounding network consisting of the ionospheric oblique backscatter sounder and the parasitic oblique-incidence sounder is presented. With the new configuration, the oblique ionogram and the backscatter ionogram can be provided at the same time.
Shu-Zhu Shi, Guo-Bin Yang, Zheng-Yu Zhao
exaly   +2 more sources