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250 Mhz Ghz Scintillation Parameters In The Equatorial Polar And Auroral Environments
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Book Synopsis 250 MHz/GHz Scintillation Parameters in the Equatorial, Polar and Auroral Environments by : Santimay Basu
Download or read book 250 MHz/GHz Scintillation Parameters in the Equatorial, Polar and Auroral Environments written by Santimay Basu and published by . This book was released on 1986 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ionospheric scintillation effects encountered in the equatorial anomaly crest, polar cap and auroral regions have been contrasted to provide information for the design and evaluation of the performance of satellite communication links in ghese regions. The equatorial anomaly region is identified as the most disturbed irregularity environment where the amplitude and phase structures of VHF/L-band scintillations are primarily dictated by the strength of scattering rather than ionospheric motion. In the anomaly region, the spectra of intense amplitude scintillations at VHF and L-band are characterized by uniform power spectral density from the lowest frequency (10 MHz) to 4 Hz at VHF and to 1 Hz at L-band and steep rolloff at higher fluctuation frequencies with power law indices of -5 to 07. Such structures are compatible with intensity decorrelation times of 0.1 and 0.3 sec at VHF and L-band frequencies, respectively. The phase spectra are described by power law variation of psd with frequency with typical spectral indices of -2. 4. The strong scattering at VHF induces extreme phase rates of 200 deg. in 0.1 sec. The 90th percentile values of rms phase deviation at 250 MHz with 100-sec detrend are found to be 16 rads in the early evening hours whereas amplitude scintillation can cover the entire dynamic range of 30 dB not only at 250 MHz but at L-band as well.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 938 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Auroral Dynamics and Space Weather by : Yongliang Zhang
Download or read book Auroral Dynamics and Space Weather written by Yongliang Zhang and published by John Wiley & Sons. This book was released on 2015-12-21 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aurora is the most visible manifestation of the connection of the Earth to the space environment and has inspired awe, curiosity, and scientific inquiry for centuries. Recent advances in observing techniques and modeling and theoretical work have revealed new auroral phenomena, provided a better understanding of auroral dynamics, and have led to an enhanced capability for auroral forecasts. This monograph features discussions of: New auroral phenomena due to the ring current ion and polar rain electron precipitation Various auroral forms and hemispheric asymmetry Auroral model development and MHD simulations Application of the auroral observations for radio absorption and scintillation Aurora nowcast and forecast for space weather operations Auroral Dynamics and Space Weather is a valuable contribution for scientists, researchers, space weather operators, and students of Earth's space environment.
Book Synopsis The Effect of the Ionosphere on Communication, Navigation, and Surveillance Systems by : John M. Goodman
Download or read book The Effect of the Ionosphere on Communication, Navigation, and Surveillance Systems written by John M. Goodman and published by . This book was released on 1988 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Ionosphere with GNSS SDR by : Ivan G. Petrovski II
Download or read book The Ionosphere with GNSS SDR written by Ivan G. Petrovski II and published by Springer Nature. This book was released on with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Advanced System for Measurement of Transionospheric Radio Propagation Effects Using GPS Signals by : G. J. Bishop
Download or read book An Advanced System for Measurement of Transionospheric Radio Propagation Effects Using GPS Signals written by G. J. Bishop and published by . This book was released on 1987 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: An advanced system for measurement of transionospheric radio propagation effects was developed, utilizing the TI-4100 four-channel Global Positioning System (GPS) receiver. During AFGL's Polar ARCS campaign at Sondrestrom, Greenland in February-March 1987, the system successfully measured ionospheric total electron content (TEC), phase scintillation, and amplitude scintillation on both GPS carrier frequencies, from up to four satellites simultaneously. This was the first time it has been possible to measure these parameters simultaneously, in multiple directions, in the high-latitude regions. Coupled with the simultaneous optical and incoherent scatter radar diagnostics obtained during the Polar ARCS campaign, these measurements significantly improve our capability to characterize high latitude ionospheric structures, particularly their temporal and spatial variation. Additionally, the development of this advanced system has contributed significantly to the technology base for specification of the Transionospheric Sensing System (TISS) for the Air Weather Service. The system can also be software upgraded to perform special navigation in addition to ionospheric measurements in airborne applications.
Book Synopsis Digital Satellite Navigation and Geophysics by : Ivan G. Petrovski
Download or read book Digital Satellite Navigation and Geophysics written by Ivan G. Petrovski and published by Cambridge University Press. This book was released on 2012-03-29 with total page 339 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridge the gap between theoretical education and practical work experience with this hands-on guide to GNSS, which features: • A clear, practical presentation of GNSS theory, with emphasis on GPS and GLONASS • All the essential theory behind software receivers and signal simulators • Key applications in navigation and geophysics, including INS aiding, scintillation monitoring, earthquake studies and more • Physical explanations of various important phenomena, including the similarity of code delay and phase advance of GNSS signals, and negative cross-correlation between scintillation intensity and phase variations. Whether you are a practising engineer, a researcher or a student, you will gain a wealth of insights from the authors' twenty-five years of experience. You can explore numerous practical examples and case studies and get hands-on user experience with a bundled real-time software receiver, signal simulator and a set of signal data, enabling you to create your own GNSS lab for research or study.
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1988 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1987 with total page 1284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Journal of the Institution of Engineers (India). by :
Download or read book Journal of the Institution of Engineers (India). written by and published by . This book was released on 2001 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radio Science written by and published by . This book was released on 2001 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1987 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1990 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Electromagnetic Wave Propagation Panel. Specialists' Meeting Publisher : ISBN 13 : Total Pages :568 pages Book Rating :4.:/5 (3 download)
Book Synopsis Scattering and Propagation in Random Media by : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Electromagnetic Wave Propagation Panel. Specialists' Meeting
Download or read book Scattering and Propagation in Random Media written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Electromagnetic Wave Propagation Panel. Specialists' Meeting and published by . This book was released on 1988 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: The topic of scattering and propagation in random media is one that has implications for the design, development and operation of most military systems that radiate energy as a means of accomplishing their funtion. Primary emphasis is on scattering and transmission in the atmosphere; however, other related random medium effects are not excluded. Modern methods of characterizing random media, mathematical methods and their applicability, effects on electromagnetic waves and the interpretation of these effects to specific system applications are described. The region of the spectrum considered is essentially unlimited and ranges from very long waves to optics. The performance of existing surveillance communication and navigation systems as well as the design of future systems is influenced by the propagation of energy via random media. An understanding of the nature of the medium and its impact on system design and performance is essential to the NATO community.
Book Synopsis Government Reports Annual Index: Keyword A-L by :
Download or read book Government Reports Annual Index: Keyword A-L written by and published by . This book was released on 1987 with total page 1260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Sensor and Propagation Panel. Symposium Publisher : ISBN 13 : Total Pages :488 pages Book Rating :4.E/5 ( download)
Book Synopsis Digital Communications Systems by : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Sensor and Propagation Panel. Symposium
Download or read book Digital Communications Systems written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Sensor and Propagation Panel. Symposium and published by . This book was released on 1996 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1987 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt:
