Download or read book Noise in Receiving Systems written by Raoul Pettai and published by Wiley-Interscience. This book was released on 1984-08-10 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: A systematic and unified treatment of thermal noise from an engineering viewpoint. This reference presents the methods used for characterizing and measuring thermal noise in RF communication systems and components. Defines power gain and its applicability to noise problems, shows how to calculate the final signal-to-noise ratio in RF systems using the known gains and noise temperatures of individual system building blocks, and discusses the dependence of dynamic range on the noise factor and noise temperature of a given transducer.
Download or read book Electronic Warfare Receivers and Receiving Systems written by Richard A. Poisel and published by Artech House. This book was released on 2015-06-01 with total page 833 pages. Available in PDF, EPUB and Kindle. Book excerpt: Receivers systems are considered the core of electronic warfare (EW) intercept systems. Without them, the fundamental purpose of such systems is null and void. This book considers the major elements that make up receiver systems and the receivers that go in them. This resource provides system design engineers with techniques for design and development of EW receivers for modern modulations (spread spectrum) in addition to receivers for older, common modulation formats. Each major module in these receivers is considered in detail. Design information is included as well as performance tradeoffs of various components. Major factors that influence the functioning of the modules are identified and discussed. Key performance parameters are identified as well, and approaches to achieving design goals are considered.
Download or read book Signals and Noise in Communication Systems written by Harrison E. Rowe and published by . This book was released on 1965 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance Predictions for Single Tropospheric Communication Links and for Several Links in Tandem written by A. P. Barsis and published by . This book was released on 1961 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Performance of long-distance tropospheric communication circuits, either singly or in tandem, is predicted in terms of the probability of obtaining a specified grade of service or better for various percentages of time. The grade of service is determined by the minimum acceptable ratio of hourly median predetection-RMS-signal-to-RMS-noise for the type of intelligence to be transmitted. The standard deviation of prediction errors depends upon the percentage of hours the specified grade of service is required and on parameters characterizing the propagation path. The possibility of reducing this standard deviation by making path-loss measurements is discussed. It is shown that no improvement is possible unless the test path is very nearly the same as the proposed operational path; in particular, unless the test path and operational paths have terminals less than one mile apart it is shown to be doubtful in most cases whether the observations will be useful in improving the reliability of the predicted performance of the proposed system. Assuming that the test path and proposed operational paths are identical, estimates are given of the number of days of observations required to halve the prediction uncertainty or, alternatively, to reduce it to 3 db; in some cases several years of observations are required. A tutorial discussion is given in Appendix III of the concepts of the effective noise figure and the effective input noise temperature of a receiving system.
Download or read book Ground Station Design and Analysis for LEO Satellites written by Shkelzen Cakaj and published by John Wiley & Sons. This book was released on 2022-10-20 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tutorial for analytical and scientific approaches related to LEO satellites ground station performance, including math, experiments, and simulations. Ground Station Design and Analysis for LEO satellites provides complete instructions and steps for ground station performance evaluation, including stations dedicated for scientific or communication purposes, and offers the reader an enhanced learning experience by proposing 40 ideas related to ground station performance assessment. Each idea goes over the math analysis, experiment or simulation, the methodology applied, the results, and a conclusion. This approach provides the reader with the opportunity to compare theoretical results with on-site results, guiding the reader towards intelligent and practical performance evaluation and enhancement. The text also considers the future emerging developments of LEO satellites and their challenges and applications, including multimedia and other scientific applications. Stemming from the highly qualified author’s research work of roughly 20 years, Ground Station Design and Analysis for LEO Satellites includes information on: Interference aspects, covering intermodulation interference modeling for LEO satellite ground stations and downlink adjacent interference for LEO search and rescue satellites Sun synchronization, covering nodal regression and Sun synchronization of low Earth orbits through inclination angle. Horizon plane and communication duration, covering communications duration with LEO satellites under ideal, practical and designed horizon plane for LEO satellite ground stations Figure of merit and system noise temperature, covering composite and antenna noise temperature, Sun noise experiment and desensibilization measurements at LEO satellite ground stations Ground Station Design and Analysis for LEO Satellites is an innovative and advanced tutorial-based resource that will appeal to satellite engineers (operators/vendors) working on the operation, maintenance, and performance evaluation of ground stations, as well as postgraduate students/early-stage researchers wishing to obtain knowledge on this state-of-the-art technology.
Download or read book OT Report written by United States. Department of Commerce. Office of Telecommunications and published by . This book was released on 1978 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to Random Signals and Noise written by Wim C. Van Etten and published by John Wiley & Sons. This book was released on 2006-02-03 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Random signals and noise are present in many engineering systems and networks. Signal processing techniques allow engineers to distinguish between useful signals in audio, video or communication equipment, and interference, which disturbs the desired signal. With a strong mathematical grounding, this text provides a clear introduction to the fundamentals of stochastic processes and their practical applications to random signals and noise. With worked examples, problems, and detailed appendices, Introduction to Random Signals and Noise gives the reader the knowledge to design optimum systems for effectively coping with unwanted signals. Key features: Considers a wide range of signals and noise, including analogue, discrete-time and bandpass signals in both time and frequency domains. Analyses the basics of digital signal detection using matched filtering, signal space representation and correlation receiver. Examines optimal filtering methods and their consequences. Presents a detailed discussion of the topic of Poisson processes and shot noise. An excellent resource for professional engineers developing communication systems, semiconductor devices, and audio and video equipment, this book is also ideal for senior undergraduate and graduate students in Electronic and Electrical Engineering.
Download or read book Technical Report Jet Propulsion Laboratory California Institute of Technology written by Jet Propulsion Laboratory (U.S.) and published by . This book was released on 1963 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NBS Technical Note written by and published by . This book was released on 1962 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synoptic Radio Meteorology written by Bradford R. Bean and published by . This book was released on 1962 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: A survey of some of the advances in the field of synoptic radio meteorology is presented. The development of representative refractive index profiles for major air mass types is reviewed. Included is a description of several refractive index parameters currently in use by radio meteorologists. Two reduced-to-sea-level index forms developed at the National Bureau of Standards are used to illustrate the three-dimensional structure of a broad-scale storm system traversing the North American continent.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Low Noise Systems in the Deep Space Network written by Macgregor S. Reid and published by Wiley-Blackwell. This book was released on 2008-09-29 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book explores the low-noise microwave systems that form the front end of all DSN ground receiving stations. It explains why the front end of each antenna is key to establishing the sensivity, polarization, frequency diversity, and capabilities of the receiving chain and, therefore, the entire ground station.
Download or read book Electrical Instruments Elektrische Instrumente written by Anton E. Pannenborg and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnitude of magnetogyric ratio of Frequency, cis 1 v 1e electron v Subscript denoting value in 1-c/s inter- 4 1 val = P, ogee/2m= 2n X 3. 5218 X 10 seC (amp/m)-1 Total bandwidth to half-power, cis Vb 0 Dielectric loss angle = arc tan (E" / E') Collision frequency, cis Vc Cyclotron frequency = eBo/2nm Skin depth in a metal = VT2/wp, p, a)m Ve Os o 2 LI v Half-width of spectral line (from centre Plasma frequency= (in) V(N e/mEiJ cis vp 3 to half-power), cis Volume charge density=N e coulombs/m e Relative permittivity = E' - j c" Reflection factor 8 e 2 2 Electric space constant = (P, ct1 a Scattering cross section, m o EO 12 "'" 8. 85416 X 10- farad/m u Conductivity = a' - j a" mhos/m Efficiency Relaxation time T rJ Efficiency of antenna = Ae/A Transmission factor rJA - {} Relative temperature, deg K Spin-lattice relaxation time, sec ·1 q,){ Absorption index=ocit/2n Magnetic flux, webers o Wavelength, m Gravitational potential it t1J Wavelength in waveguide, m Susceptibility = X' - j X" Ag X Free-space wavelength, m w Angular frequency = 2n v rad/sec Ao Relative permeability = p, ' - jp," Angular velocity, rad/sec w Jl 2 p, Drift mobility of carriers, m/volt-sec Cyclotron angular frequency we BOHR'S magneton=p, eh/2m P, B o o = e Bo/m rad/sec 29 =1. 16529 X 10- weber-m 0 Subscript denoting d. c., static, or steady I. General principles. a) Electromagnetic radiation.
Download or read book Fiftieth Anniversary 1912 1962 written by Institute of Radio Engineers and published by . This book was released on 1962 with total page 1190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NSA Technical Journal written by United States. National Security Agency and published by . This book was released on 1966 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Passive Microwave Remote Sensing of the Earth written by Eugene A. Sharkov and published by Springer Science & Business Media. This book was released on 2003-12-16 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most comprehensive description of the physical foundations of methods and instruments in the fields of passive remote sensing applied to investigations of the Earth, Solar system bodies and space. Emphasis is placed on the physical aspects necessary to judge the possibilities and limitations of passive remote sensing methods in specific observation cases. Numerous practical applications and illustrations are given referring to airspace up-to-date experiments. Due to the lack in traditional separation on methods and instruments of remote sensing of the Earth and outerterrestrial space this book aims to supply more information in this field.
Download or read book Telecommunications and Networking written by Udo W. Pooch and published by CRC Press. This book was released on 2018-05-04 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the dividing line between traditional computing science and telecommunications quickly becomes blurred or disappears in today's rapidly changing environment, there is an increasing need for computer professionals to possess knowledge of telecommunications principles. Telecommunications and Networking presents a comprehensive overview of the interaction and relationship between telecommunications and data processing. The book's early chapters cover basic telecommunications vocabulary, common nomenclature, telecommunications fundamentals, as well as the important relationships among coding, error detection and correction, and noise. Later chapters discuss such topics as switching, timing, topological structures, routing algorithms, and teleprocessing. Other topics covered in detail include specific concerns inherent to computer communications, such as protocols, error detection and correction, network monitoring and security, and system validation. System designers and programmers can no longer be effective simply by understanding the tradeoffs between hardware and software. Telecommunications and Networking provides both computing professionals and students the fundamental computer communications concepts necessary to function in today's computer industry.
