Добірка наукової літератури з теми "VLF atmosphere"
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Статті в журналах з теми "VLF atmosphere"
Biswas, Sagardweep, Subrata Kundu, Sudipta Sasmal, Dimitrios Z. Politisb, Stelios M. Potirakis, and Masashi Hayakawa. "Preseismic Perturbations and their Inhomogeneity as Computed from Ground- and Space-Based Investigation during the 2016 Fukushima Earthquake." Journal of Sensors 2023 (February 24, 2023): 1–23. http://dx.doi.org/10.1155/2023/7159204.
Повний текст джерелаKachakhidze, M. K., Z. A. Kereselidze, and N. K. Kachakhidze. "The model of own seismoelectromagnetic oscillations of LAI system." Solid Earth Discussions 2, no. 2 (July 26, 2010): 233–50. http://dx.doi.org/10.5194/sed-2-233-2010.
Повний текст джерелаKachakhidze, M. K., Z. A. Kereselidze, and N. K. Kachakhidze. "The model of self-generated seismo-electromagnetic oscillations of the LAI system." Solid Earth 2, no. 1 (February 8, 2011): 17–23. http://dx.doi.org/10.5194/se-2-17-2011.
Повний текст джерелаBuchanan, Weston P., Maxim de Jong, Rachana Agrawal, Janusz J. Petkowski, Archit Arora, Sarag J. Saikia, Sara Seager, and James Longuski. "Aerial Platform Design Options for a Life-Finding Mission at Venus." Aerospace 9, no. 7 (July 7, 2022): 363. http://dx.doi.org/10.3390/aerospace9070363.
Повний текст джерелаZhao, Shufan, Xuhui Shen, Weiyan Pan, Xuemin Zhang, and Li Liao. "Penetration characteristics of VLF wave from atmosphere into lower ionosphere." Earthquake Science 23, no. 3 (June 2010): 275–81. http://dx.doi.org/10.1007/s11589-010-0723-9.
Повний текст джерелаRodger, C. J., M. A. Clilverd, N. R. Thomson, D. Nunn, and J. Lichtenberger. "Lightning driven inner radiation belt energy deposition into the atmosphere: regional and global estimates." Annales Geophysicae 23, no. 11 (December 21, 2005): 3419–30. http://dx.doi.org/10.5194/angeo-23-3419-2005.
Повний текст джерелаZhao, Shufan, Xuhui Sheng, Weiyan Pan, and Xuemin Zhang. "Penetration characteristics of VLF wave from atmosphere into the lower ionosphere." Chinese Journal of Space Science 31, no. 2 (2011): 194. http://dx.doi.org/10.11728/cjss2011.02.194.
Повний текст джерелаSrećković, Vladimir A., Desanka M. Šulić, Ljubinko Ignjatović, and Veljko Vujčić. "Low Ionosphere under Influence of Strong Solar Radiation: Diagnostics and Modeling." Applied Sciences 11, no. 16 (August 4, 2021): 7194. http://dx.doi.org/10.3390/app11167194.
Повний текст джерелаSilber, Israel, Colin Price, and Craig J. Rodger. "Semi-annual oscillation (SAO) of the nighttime ionospheric D region as detected through ground-based VLF receivers." Atmospheric Chemistry and Physics 16, no. 5 (March 14, 2016): 3279–88. http://dx.doi.org/10.5194/acp-16-3279-2016.
Повний текст джерелаSilber, I., C. G. Price, and C. J. Rodger. "Semi-annual oscillation (SAO) of the nighttime ionospheric D-region as detected through ground-based VLF receivers." Atmospheric Chemistry and Physics Discussions 15, no. 21 (November 4, 2015): 30383–407. http://dx.doi.org/10.5194/acpd-15-30383-2015.
Повний текст джерелаДисертації з теми "VLF atmosphere"
Groves, Keith Michael. "Nonlinear ionospheric propagation effects on UHF and VLF radio signals." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/52949.
Повний текст джерелаIncludes bibliographical references (p. 179-184).
by Keith Michael Groves.
Ph.D.
Low, David J. "Studies of the lower atmosphere with a VHF wind profiler /." Title page, abstract and contents only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phl9121.pdf.
Повний текст джерелаCulbertson, Gary W. "Assessments of atmospheric affects of VHF and UHF communications." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA226661.
Повний текст джерелаThesis Advisor(s): Davidson, Kenneth L. Second Reader: Tulloch, A. W. "March 1990." Description based on signature page as viewed on August 26, 2009. DTIC Descriptor(s): Atmospheric Refraction, Very High Frequency, Ultrahigh Frequency, Communication And Radio Systems, Tools, Parameters, Wind, Forecasting, Accuracy, Theses, Electromagnetic Radiation, Pressure, Radiosondes, Refraction, Pacific Ocean, Climatology, Troposphere, Humidity, Gradients, Shores, East(Direction), Computer Printouts, Television Display Systems, Weather, Guided Missiles, Synoptic Meteorology, Test And Evaluation, Data Bases. DTIC Identifier(s): IREPS (Integrated Refractive Effect Prediction System). Author(s) subject terms: Communications, IREPS, refraction. Includes bibliographical references (p. 70-71). Also available online.
Campos, Ortega Edwin F. 1972. "Analyses of precipitation signal using VHF vertically-pointing radar." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=102965.
Повний текст джерелаThis research develops a multi-faceted approach for the calibration of VHF vertically-pointing radars, by combining a first calibration method that compares the recorded VHF signal to power coming from a noise generator and a second calibration method that compares recorded VHF signal to cosmic radiation. This approach allows the retrieval of antenna and receiver parameters (such as noise levels, efficiency, and gain), and four other equations for the corresponding errors. In addition, we develop an equation for calibrating Doppler spectra.
The analysis is focused on rain observations with VHF radar. We verify the hypothesis that |K|2 = 0.93 for most of the rain observations at VHF band. A signal-processing algorithm for extracting the rain signal out of the VHF power spectra is then presented. This work also derives a general version of the radar equation valid for vertically pointing radars, as well as a particular version of this equation valid for the McGill VHF radar. The study then makes numerical simulations of several profiles of precipitation signal at VHF band, by combining high-resolution profiles of precipitation signal (from a calibrated X-band radar) and the VHF antenna pattern in our general version of the radar equation. The analyses indicate that VHF reflectivity at gates above the melting layer is artificially enhanced by the precipitation signal collected from the side lobes.
This work also studies the effect of precipitation in the scattering properties of clear air. We analyze several cases of stratiform and convective rain, occurring in a continental mid-latitude environment (Montreal, Lat.45.41°N, Long.73.94°W). For these cases, Doppler spectra taken by a VHF vertically-pointing radar were used to retrieve simultaneous co-located values of precipitation intensity (rainrates) and degrees of refractive index fluctuation (structure-function parameter for refractivity turbulence, Cn2). We validated these retrievals using co-located, calibrated measurements of precipitation signal at X-band. The comparison between equivalent reflectivity factors at X and VHF bands agrees within 1 dB. The study includes rainrates between 0.3 and 78 mm/h, and Cn2 values between 10-16 and 10-12 m-2/3 , retrieved from the VHF spectra at 2.5 km height. The study finds that the occurrence of rain is associated with distinctive changes in the structure of air refractive index fluctuations, and that these changes are of a turbulent nature for the most intense rainrates.
Beldon, Charlotte. "VHF radar studies of mesosphere and thermosphere." Thesis, University of Bath, 2008. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.512294.
Повний текст джерелаMu, K. L. "Investigation of tropospheric turbulence using the Adelaide VHF radar /." Title page, abstract and contents only, 1991. http://web4.library.adelaide.edu.au/theses/09SM/09smm941.pdf.
Повний текст джерелаBaudino, Jean-Loup. "Analyse des données photométriques et spectroscopiques infrarouges d'exoplanètes obtenues avec l'instrument SPHERE au VLT." Observatoire de Paris, 2015. https://hal.science/tel-02095304.
Повний текст джерелаSince 2003 direct imaging of exoplanets allows us to obtain spectroscopic and photometric data to characterize their atmospheres. First, our goal was to develop a simple tool to interpret data from SPHERE and GPI to derive planetary physical parameters. We developed a model of young giant exoplanet (called Exo-REM for Exoplanet Radiative-convective Equilibrium Model). Input parameters are surface gravity g, effective temperature (Teff) and an elemental composition. Opacity sources include the H2 –He collision-induced absorption and atomic and molecular lines from eight compounds (including CH4 updated with the Exomol linelist). We consider clouds of iron and silicates without scattering. I have used Exo-REM to analyse photometric and spectral observations of HD 95086 b, beta Pictoris b, kappa Andromedae B, HR 8799 b, c, d, e, GJ 758 B. I finally investigated the presicion to which the above parameters can be constrained from SPHERE measurement
Mauriet, Sylvain. "Simulation d'un écoulement de jet de rive par une méthode VOF." Phd thesis, Université de Pau et des Pays de l'Adour, 2009. http://tel.archives-ouvertes.fr/tel-00463578.
Повний текст джерелаLee, Christopher Francis. "Use of wind profilers to quantify atmospheric turbulence." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/use-of-wind-profilers-to-quantify-atmospheric-turbulence(d6a12ed2-533a-4dae-9f0d-747bc0b4c725).html.
Повний текст джерелаDrevard, Déborah. "Etude expérimentale et numérique de la propagation d'ondes de gravité en zone de déferlement." Phd thesis, Université du Sud Toulon Var, 2006. http://tel.archives-ouvertes.fr/tel-00141744.
Повний текст джерелаL'objectif de ce travail est d'étudier expérimentalement et numériquement la propagation et le déferlement
d'ondes de gravité.
La première partie, expérimentale, propose des méthodes de calcul, basées sur les houles de Stokes, pour la mesure d'ondes partiellement stationnaires à partir d'instruments de type électromagnétique (S4) ou
acoustique (ADV) donnant des mesures synchrones de vitesses et/ou de pression. Les influences du courant,
de la direction de propagation, de la profondeur d'immersion des appareils ainsi que des effets non
linéaires sont alors étudiés à partir de données en bassin et in situ.
La deuxième partie, numérique, consiste en la validation d'une méthode de suivi de surface libre de type
SL-VOF (Semi-Lagrangian Volume Of Fluid), insérée dans un code de calcul industriel (code EOLE de la
société Principia R&D). L'onde de gravité est modélisée par un soliton. L'étude de la propagation et du
déferlement du soliton est effectuée pour deux applications : sur une marche (discontinuité du fond) puis sur un fond de pente constante 1/15. L'évolution de la surface libre, son élévation et le champ de vitesses
sont alors comparés aux résultats expérimentaux.
Книги з теми "VLF atmosphere"
Gubbay, J. S. Scientific investigations of the Space Research Group. Salisbury: DSTO, 1988.
Знайти повний текст джерелаW, Thomson Dennis, and United States. National Aeronautics and Space Administration., eds. Final technical report for NASA grant no. NAG8-050 entitled Combined VHF doppler radar and airborne (CV-990) measurements of atmospheric winds on the mesoscale. University Park, PA: Pennsylvania State University, 1989.
Знайти повний текст джерелаЧастини книг з теми "VLF atmosphere"
Windsteig, W., E. A. Dorfi, S. Höfner, J. Hron, and F. Kerschbaum. "Synthetic Images from Dynamic Model Atmospheres of C-Rich Long-Period Variables." In Science with the VLT Interferometer, 401–2. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-540-69398-7_66.
Повний текст джерелаRöttger, J., and M. F. Larsen. "UHF/VHF Radar Techniques for Atmospheric Research and Wind Profiler Applications." In Radar in Meteorology, 235–81. Boston, MA: American Meteorological Society, 1990. http://dx.doi.org/10.1007/978-1-935704-15-7_23.
Повний текст джерелаDas, Tanmay, Debyendu Jana, Arpan Mitra, P. Nandakumar, Sudipto Datta, Jawad Y. Siddiqui, Ashik Paul, Gopal Singh, Arnam Ghosh, and Souvik Majumder. "Lower Atmospheric Wind Profile Studies and Validation of VHF Doppler Radar of University of Calcutta." In Computers and Devices for Communication, 183–89. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8366-7_25.
Повний текст джерелаMaurya, Ajeet Kumar, Gaurish Tripathi, S. B. Singh, Rajesh Singh, and A. K. Singh. "Low-latitude upper atmosphere remote sensing using very low frequency (VLF) waves." In Atmospheric Remote Sensing, 283–306. Elsevier, 2023. http://dx.doi.org/10.1016/b978-0-323-99262-6.00002-x.
Повний текст джерелаWakabayashi, Ryoji. "Fundamentals of Meteor Burst Communication." In Advances in Environmental Engineering and Green Technologies, 202–12. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-2381-0.ch011.
Повний текст джерелаТези доповідей конференцій з теми "VLF atmosphere"
Jang, Bo, Dong Wen, Tao Xu, and Cuihai Liu. "Linear prediction model based suppression technology for VLF atmosphere noise signals." In 2012 11th International Conference on Signal Processing (ICSP 2012). IEEE, 2012. http://dx.doi.org/10.1109/icosp.2012.6491828.
Повний текст джерелаNico, G., A. Nina, P. Biagi, R. Colella, and A. Ermini. "Studying the temporal variations of atmosphere physical properties at different spatial and temporal scales by VLF radio signals and space geodesy techniques." In 2020 XXXIIIrd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS). IEEE, 2020. http://dx.doi.org/10.23919/ursigass49373.2020.9232381.
Повний текст джерелаLyakhov, A. N., A. A. Egoshin, J. I. Zetzer, and K. N. Yakimenko. "Numerical simulation of the impact of the middle atmosphere parameters on the lower ionosphere and VLF/LF radiowaves propagation using MLS EOS AURA data." In 2013 US National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM). IEEE, 2013. http://dx.doi.org/10.1109/usnc-ursi-nrsm.2013.6525134.
Повний текст джерелаBashkuev, Yuri, Ludmila Angarkhaeva, Darima Buyanova, and Viktor Melchinov. "Surface impedance of the structure: thick ice-sea in VLF-VHF range of radio waves." In 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, edited by Gennadii G. Matvienko and Oleg A. Romanovskii. SPIE, 2020. http://dx.doi.org/10.1117/12.2575050.
Повний текст джерелаBashkuev, Yuri B., Ludmila K. Angarkhaeva, and Darima G. Buyanova. "Surface impedance of the layered medium "dry sand - watered sea sand" in the VLF-VHF range." In 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, edited by Oleg A. Romanovskii and Gennadii G. Matvienko. SPIE, 2021. http://dx.doi.org/10.1117/12.2603255.
Повний текст джерелаCherneva, Nina V., and Gennadii I. Druzhin. "Diurnal periods of VLF radiation." In XXIII International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, edited by Oleg A. Romanovskii. SPIE, 2017. http://dx.doi.org/10.1117/12.2286243.
Повний текст джерелаJenn-Shyong Chen, Shih-Chiao Tsai, Yen-Hsyang Chu, and Ching-Lun Su. "Multifrequency range imaging of atmospheric structures using VHF-band atmosphere radars." In 2016 Progress in Electromagnetic Research Symposium (PIERS). IEEE, 2016. http://dx.doi.org/10.1109/piers.2016.7735368.
Повний текст джерелаBuyanova, D. G., D. B. Auyrov, and Y. B. Bashkuev. "Variations of parameters ELF-VLF noise and VLF signals on the Demeter satellite over the seismic activity region." In 20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, edited by Oleg A. Romanovskii. SPIE, 2014. http://dx.doi.org/10.1117/12.2073467.
Повний текст джерелаVodinchar, G. M., E. A. Malysh, and N. V. Cherneva. "Recognition of whistler patterns in vlf signal spectrograms." In XXII International Symposium Atmospheric and Ocean Optics. Atmospheric Physics, edited by Gennadii G. Matvienko and Oleg A. Romanovskii. SPIE, 2016. http://dx.doi.org/10.1117/12.2247928.
Повний текст джерелаBashkuev, Yuri B., Valery B. Khaptanov, and Darima G. Buyanova. "ELF-VLF radio wave diagnostics of the granitoid massif." In XXV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, edited by Gennadii G. Matvienko and Oleg A. Romanovskii. SPIE, 2019. http://dx.doi.org/10.1117/12.2540893.
Повний текст джерелаЗвіти організацій з теми "VLF atmosphere"
Wilson, D., Daniel Breton, Lauren Waldrop, Danney Glaser, Ross Alter, Carl Hart, Wesley Barnes, et al. Signal propagation modeling in complex, three-dimensional environments. Engineer Research and Development Center (U.S.), April 2021. http://dx.doi.org/10.21079/11681/40321.
Повний текст джерела