Download or read book Channel Characterisation and System Design for Sub Surface Communications written by David Gibson and published by Lulu.com. This book was released on 2010-06-13 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the author's PhD thesis, this book is a theoretical study of subterranean radio communication, with the focus on methods that depend primarily on the penetration of electromagnetic fields through the ground. Through-the-earth communication using e-m fields - specifically magnetic induction - plays a role in search and rescue systems used in the mining industry. It is also used for borehole telemetry, pipeline location and by cavers and pot-holers. Chapters describe propagation, antennas, and the design of transmitters and receivers. A figure of merit - the specific aperture - is introduced as an aid to antenna design. A crucial aspect of all systems is the signal to noise ratio, for which the strategy of noise-matching is introduced. The design of a wide-band low-frequency sounder is described, for channel evaluation using a non-ideal binary sequence. A method of calculating the inverse of a generalised sequence is described, for which cross-correlation results in a system identification signal.
Download or read book Annual Report written by United States. Dept. of Commerce. Office of Telecommunications and published by . This book was released on 1973 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Internet of Things for Sustainable Community Development written by Abdul Salam and published by Springer Nature. This book was released on with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Exploratory Shaft Conceptual Design Report written by and published by . This book was released on 1983 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Low cost FSK Modem Network for Polled Communication Systems written by Richard A. Watson and published by . This book was released on 1985 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Notes on Naval Communications written by Alexander Campbell Kidd and published by . This book was released on 1924 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Manned Submersibles written by Roswell Frank Busby and published by . This book was released on 1976 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seminar on Transport and Fate of Contaminants in the Subsurface written by and published by . This book was released on 1987 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Space Science and Communication for Sustainability written by Wayan Suparta and published by Springer. This book was released on 2017-10-31 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses space science and communication – one of the main pillars of space science sustainability, an area that has recently become of great importance. In this regard, research and development play a crucial role in sustainability development. However, obtaining essential data in the physical world to interpret the universe and to predict what could happen in the future is a challenging undertaking. Accordingly, providing valid information to understand trends, evaluate needs, and create sustainable development policies and programs in the best interest of all the people is indispensable. This book was prepared in conjunction with the fifth meeting of the 2017 International Conference on Space Science and Communication (IconSpace2017), held in Kuala Lumpur, Malaysia on 3-5 May 2017 to introduce graduate stuandents, researchers, lecturers, engineers, geospatialists, meteorologists, climatologists, astronomers and practitioners to the latest applications of space science, telecommunications, meteorology, remote sensing and related fields. The individual papers discuss a broad range of space science and technology applications, e.g. the formation of global warming from space, environmental and remote sensing, communication systems, and smart materials for space applications.
Download or read book Special Regulations written by United States Department of the Army and published by . This book was released on 1953 with total page 1156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review of the Earth Mode Communication Program at AFCRL written by Leon A. Ames and published by . This book was released on 1966 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The program in earth mode communications research at the U.S. Air Force Cambridge Research Laboratories is reviewed. Emphasis is placed on geological and geophysical problems encountered in the course of the program. Communications modes studied include: (1) 'deep-strata', wherein radio frequency electromagnetic waves are propagated between buried antennas over a path entirely within rock strata, and (2) 'conduction current', consisting of ULF conduction field communications between long, grounded dipoles. Deep-strata studies were carried out utilizing both loops and linear antennas immersed in the rock medium. Antenna and transmission path characteristics were studied under a variety of conditions and over paths up to 4.5 km in length. It was found that two of the greatest problems facing the communicator are the complexity of the earth's crust and its low values of electrical resistivity. Therefore, a geological and geophysical study was performed to evaluate possible transmission sites in the United States. Conduction field studies were performed using what was essentially the dipole-dipole geophysical resistivity sounding technique. Field tests were made at frequencies from 0.01 Hz to 10 Hz and at ranges to 32 km. (Author).
Download or read book Information Products of the Office of Telecommunications written by United States. Department of Commerce. Office of Telecommunications and published by . This book was released on 1975 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in VLSI Communication and Signal Processing written by Debashis Dutta and published by Springer Nature. This book was released on 2019-12-03 with total page 1004 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises select proceedings of the International Conference on VLSI, Communication and Signal processing (VCAS 2018). It looks at latest research findings in VLSI design and applications. The book covers a wide range of topics in electronics and communication engineering, especially in the area of microelectronics and VLSI design, communication systems and networks, and image and signal processing. The contents of this book will be useful to researchers and professionals alike.
Download or read book GATE 2019 Electronics Communication Engineering Masterpiece with 10 Practice Sets 6 in Book 4 Online 6th edition written by Disha Experts and published by Disha Publications. This book was released on with total page 1137 pages. Available in PDF, EPUB and Kindle. Book excerpt: • ‘GATE Electronics & Communication Engineering Masterpiece 2019 with 10 Practice Sets - 6 in Book + 4 Online Tests - 6th edition’ for GATE exam contains exhaustive theory, past year questions, practice problems and Mock Tests. • Covers past 14 years questions. • Exhaustive EXERCISE containing 100-150 questions in each chapter. In all contains around 5200 MCQs. • Solutions provided for each question in detail. • The book provides 10 Practice Sets - 6 in Book + 4 Online Tests designed exactly on the latest pattern of GATE exam.
Download or read book GATE 2020 Electronics Communication Engineering Guide with 10 Practice Sets 6 in Book 4 Online 7th edition written by Disha Experts and published by Disha Publications. This book was released on 2019-06-03 with total page 1172 pages. Available in PDF, EPUB and Kindle. Book excerpt: • ‘GATE Electronics & Communication Engineering Guide 2019 with 10 Practice Sets - 6 in Book + 4 Online Tests - 6th edition’ for GATE exam contains exhaustive theory, past year questions, practice problems and Mock Tests. • Covers past 14 years questions. • Exhaustive EXERCISE containing 100-150 questions in each chapter. In all contains around 5200 MCQs. • Solutions provided for each question in detail. • The book provides 10 Practice Sets - 6 in Book + 4 Online Tests designed exactly on the latest pattern of GATE exam.
Download or read book Subsurface Conditions written by David J. Hatem and published by John Wiley & Sons. This book was released on 1998-01-02 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Subsurface projects can spell tremendous liability and risk concerns for geotechnical engineers, who pay among the highest liability insurance rates among A/E/C professionals. Written for a non-legal audience by a recognized liability authority, this helpful book brings together the information and expertise needed to manage the non-technical aspects of such projects. Discusses the implications of errors and omissions, applicable law, bid and contract document disclosure, and much more. Filled with relevant case studies.
Download or read book Communications written by and published by . This book was released on 1960 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
