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Author: Raoul Pettai
Publisher: Wiley-Interscience
ISBN: 9780471892359
Category : Technology & Engineering
Languages : en
Pages : 273
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Book Description
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.
Author: Raoul Pettai
Publisher: Wiley-Interscience
ISBN: 9780471892359
Category : Technology & Engineering
Languages : en
Pages : 273
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Book Description
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.
Author: Richard A. Poisel
Publisher: Artech House
ISBN: 1608078418
Category : Technology & Engineering
Languages : en
Pages : 833
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Book Description
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.
Author: Harrison E. Rowe
Publisher:
ISBN:
Category : Mathematics
Languages : en
Pages : 364
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Book Description
Author: Wim C. Van Etten
Publisher: John Wiley & Sons
ISBN: 0470024127
Category : Science
Languages : en
Pages : 270
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Book Description
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.
Author: Shkelzen Cakaj
Publisher: John Wiley & Sons
ISBN: 1119899273
Category : Technology & Engineering
Languages : en
Pages : 244
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Book Description
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.
Author: United States. Department of Commerce. Office of Telecommunications
Publisher:
ISBN:
Category : Telecommunication
Languages : en
Pages : 290
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Book Description
Author: Jet Propulsion Laboratory (U.S.)
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 550
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Book Description
Author:
Publisher:
ISBN:
Category : Physical instruments
Languages : en
Pages : 200
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Book Description
Author: Bradford R. Bean
Publisher:
ISBN:
Category : Radio meteorology
Languages : en
Pages : 772
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Book Description
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.
Author: A. P. Barsis
Publisher:
ISBN:
Category : Radio waves
Languages : en
Pages : 164
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Book Description
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.
