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Long Range Survivable Mf Radio Communication Study Using High Altitude Whispering Gallery Modes
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Book Synopsis Long Range Survivable MF Radio Communication Study Using High Altitude Whispering Gallery Modes by : John I. Videberg
Download or read book Long Range Survivable MF Radio Communication Study Using High Altitude Whispering Gallery Modes written by John I. Videberg and published by . This book was released on 1973 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was undertaken to investigate the existence and properties of waves guided under the D-layer in low-loss Whispering Gallery or earth-detached modes at MF to LF. These low-loss paths are the result of focusing of rays reflected below the curved ionosphere, together with a marked decrease in ionospheric reflection loss at the highly oblique incidence angles obtainable only from high altitudes. Theory and calculations indicated an enhancement of this phenomenon during ionispheric disturbances and suggested a feasibility test. A low-power transmission experiment lasting over 30 hr was successfully conducted between balloons separated by 1000 miles at an altitude of 35 km on 220 and 440 kHz. Signals were received on the balloon path over most of the day and night. Total path attenuations varied from 3 to 30 dB below free space. Maximum signal height gains ranging from 40 to 60 dB relative to an equivalent ground-to-ground path were measured. (Modified author abstract).
Book Synopsis Long Range Survivable MF Radio Communication Study Using High Altitude Whispering Gallery Modes by : John I. Videberg
Download or read book Long Range Survivable MF Radio Communication Study Using High Altitude Whispering Gallery Modes written by John I. Videberg and published by . This book was released on 1973 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was undertaken to investigate the existence and properties of waves guided under the D-layer in low-loss Whispering Gallery or earth-detached modes at MF to LF. These low-loss paths are the result of focusing of rays reflected below the curved ionosphere, together with a marked decrease in ionospheric reflection loss at the highly oblique incidence angles obtainable only from high altitudes. Theory and calculations indicated an enhancement of this phenomenon during ionispheric disturbances and suggested a feasibility test. A low-power transmission experiment lasting over 30 hr was successfully conducted between balloons separated by 1000 miles at an altitude of 35 km on 220 and 440 kHz. Signals were received on the balloon path over most of the day and night. Total path attenuations varied from 3 to 30 dB below free space. Maximum signal height gains ranging from 40 to 60 dB relative to an equivalent ground-to-ground path were measured. (Modified author abstract)
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 1974 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ionospheric Radio Wave Propagation by : Jules Aarons
Download or read book Ionospheric Radio Wave Propagation written by Jules Aarons and published by . This book was released on 1984 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Report on Research at AFCRL. by : Air Force Cambridge Research Laboratories (U.S.)
Download or read book Report on Research at AFCRL. written by Air Force Cambridge Research Laboratories (U.S.) and published by . This book was released on 1972 with total page 336 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 1974 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Index written by and published by . This book was released on 1975 with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Government Reports Announcements by :
Download or read book Government Reports Announcements written by and published by . This book was released on 1974 with total page 964 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 1974 with total page 1176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Catalogs of the Scripps Institution of Oceanography Library by : Scripps Institution of Oceanography. Library
Download or read book Catalogs of the Scripps Institution of Oceanography Library written by Scripps Institution of Oceanography. Library and published by . This book was released on 1980 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Archaeology, Anthropology, and Interstellar Communication by : National Aeronautics Administration
Download or read book Archaeology, Anthropology, and Interstellar Communication written by National Aeronautics Administration and published by CreateSpace. This book was released on 2014-09-06 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Addressing a field that has been dominated by astronomers, physicists, engineers, and computer scientists, the contributors to this collection raise questions that may have been overlooked by physical scientists about the ease of establishing meaningful communication with an extraterrestrial intelligence. These scholars are grappling with some of the enormous challenges that will face humanity if an information-rich signal emanating from another world is detected. By drawing on issues at the core of contemporary archaeology and anthropology, we can be much better prepared for contact with an extraterrestrial civilization, should that day ever come.
Book Synopsis Science And Human Behavior by : B.F Skinner
Download or read book Science And Human Behavior written by B.F Skinner and published by Simon and Schuster. This book was released on 2012-12-18 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: The psychology classic—a detailed study of scientific theories of human nature and the possible ways in which human behavior can be predicted and controlled—from one of the most influential behaviorists of the twentieth century and the author of Walden Two. “This is an important book, exceptionally well written, and logically consistent with the basic premise of the unitary nature of science. Many students of society and culture would take violent issue with most of the things that Skinner has to say, but even those who disagree most will find this a stimulating book.” —Samuel M. Strong, The American Journal of Sociology “This is a remarkable book—remarkable in that it presents a strong, consistent, and all but exhaustive case for a natural science of human behavior…It ought to be…valuable for those whose preferences lie with, as well as those whose preferences stand against, a behavioristic approach to human activity.” —Harry Prosch, Ethics
Book Synopsis Linguistics For Dummies by : Rose-Marie Dechaine
Download or read book Linguistics For Dummies written by Rose-Marie Dechaine and published by John Wiley & Sons. This book was released on 2012-02-08 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fascinating, fun, and friendly way to understand the science behind human language Linguistics is the scientific study of human language. Linguistics students study how languages are constructed, how they function, how they affect society, and how humans learn language. From understanding other languages to teaching computers to communicate, linguistics plays a vital role in society. Linguistics For Dummies tracks to a typical college-level introductory linguistics course and arms you with the confidence, knowledge, and know-how to score your highest. Understand the science behind human language Grasp how language is constructed Score your highest in college-level linguistics If you're enrolled in an introductory linguistics course or simply have a love of human language, Linguistics For Dummies is your one-stop resource for unlocking the science of the spoken word.
Book Synopsis Schools of Thought by : Rexford Brown
Download or read book Schools of Thought written by Rexford Brown and published by Jossey-Bass. This book was released on 1993-08-10 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a result of his visits to classrooms across the nation, Brown has compiled an engaging, thought-provoking collection of classroom vignettes which show the ways in which national, state, and local school politics translate into changed classroom practices. "Captures the breadth, depth, and urgency of education reform".--Bill Clinton.
Book Synopsis USMC/Vietnam Helicopter Association by :
Download or read book USMC/Vietnam Helicopter Association written by and published by Turner Publishing Company. This book was released on 2001 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Tuning of the World by : R. Murray Schafer
Download or read book The Tuning of the World written by R. Murray Schafer and published by . This book was released on 1980 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Long-eared Bats written by Susan M. Swift and published by A&C Black. This book was released on 2010-01-31 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long-Eared Bats examines the biology, ecology and behaviour of two European bat species - Plecotus auritus and Plecotus austriacus. This book investigates their behaviour and considers the full range of conservation issues relating to the species. Topics covered include: identifying the species, foraging, reproductive biology, social organization, and the effects of man-made alterations to the environment and proposed conservation methods.
