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Author : Jack Milton Shulman
Publisher :
ISBN 13 :
Total Pages : 106 pages
Book Rating : 4.:/5 (36 download)
Download or read book A Method of Automatic Radio Direction Finding at Very High Frequencies written by Jack Milton Shulman and published by . This book was released on 1947 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : P. J. D. Gething
Publisher : IET
ISBN 13 : 9780863412387
Total Pages : 392 pages
Book Rating : 4.4/5 (123 download)
Download or read book Radio Direction Finding and Superresolution written by P. J. D. Gething and published by IET. This book was released on 1991 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enlarged and revised second edition. Modern direction finders, capable of measuring elevation angles as well as azimuth angles on the components of multi-ray wavefields, have become powerful tools for research in ionospheric physics and HF radio propagation. The complexity of the problem of resolving closely-spaced rays requires the combined use of wide aperture antenna arrays, multichannel receiving systems and sophisticated digital processing techniques.
Author : David William Watson
Publisher :
ISBN 13 :
Total Pages : 232 pages
Book Rating : 4.F/5 ( download)
Download or read book Radio Direction Finding written by David William Watson and published by . This book was released on 1971 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Department of the Army
Publisher :
ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.:/5 (3 download)
Download or read book Radio Direction Finding written by United States. Department of the Army and published by . This book was released on 1977 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William John Ross
Publisher :
ISBN 13 :
Total Pages : 63 pages
Book Rating : 4.:/5 (227 download)
Download or read book A New Automatic Direct-reading High-frequency Radio Direction Finder written by William John Ross and published by . This book was released on 1955 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James William Seeger
Publisher :
ISBN 13 :
Total Pages : 86 pages
Book Rating : 4.:/5 (372 download)
Download or read book Radio Direction-finding at Ultra-high Frequencies written by James William Seeger and published by . This book was released on 1940 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Francis Winkley Dunmore
Publisher :
ISBN 13 :
Total Pages : 14 pages
Book Rating : 4.3/5 (91 download)
Download or read book A Unicontrol High-frequency Radio Direction Finder written by Francis Winkley Dunmore and published by . This book was released on 1926 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Herndon H. Jenkins
Publisher : Artech House Radar Library (Ha
ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.3/5 (91 download)
Download or read book Small-aperture Radio Direction-finding written by Herndon H. Jenkins and published by Artech House Radar Library (Ha. This book was released on 1991 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Operating principles - Performance difinition - Direction-finding error sources - System level descriptions - Representative operational small-aperture - Passive geolocation - Subsystem considerations - Calibration and test of direction-finding systems.
Author : Dennis Dean Sheppard
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (227 download)
Download or read book Radio Direction Finding on High Frequency Short Duration Signals written by Dennis Dean Sheppard and published by . This book was released on 1980 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The feasibility of accomplishing high frequency direction finding against short duration (100-1000 ms) HF skywave signals using narrow aperture antennas is investigated. Two statistical procedures for estimating the signal bearing are proposed and compared. These procedures employ time averaging to reduce the large instantaneous bearing error caused by the phase and amplitude distortion of the wavefront due to scattering and multipath interference. Results are presented using data collected with the Southwest Research Institute Coaxial Spaced Loop HFDF system. It is shown that for a limited sample of data from this system the standard deviation of the bearing estimate for a 200 ms signal varied from 15 to 59 degrees. (Author).
Author :
Publisher :
ISBN 13 :
Total Pages : 152 pages
Book Rating : 4.3/5 (91 download)
Download or read book U.S. Government Research Reports written by and published by . This book was released on 1962 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 908 pages
Book Rating : 4.E/5 ( download)
Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 908 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. National Bureau of Standards
Publisher :
ISBN 13 :
Total Pages : 728 pages
Book Rating : 4.3/5 (91 download)
Download or read book Journal of Research of the National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1961 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Douglas Travers
Publisher :
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4.:/5 (227 download)
Download or read book High Frequency Direction Finding Research for Shipboard Use: Direction Finder Radio, Shipboard Siting and Design, Study and Development written by Douglas Travers and published by . This book was released on 1964 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Completion of repairs to the AN/SLR-10 spaced-loop antenna including satisfactory access door gaskets is reported. Initial tests on the AN/SLR-11 particularly the antennas and preamplifiers were performed. Equipment developed a number of years ago for azimuth curve plotting was extensively modified in order to replace an obsolete X-Y recorder and to reduce the size and weight of the equipment. The final experimental work toward the selection of a crossed spaced loop direction finding geometry is under way. Mechanical design of the model to be shipboard tested was started. Electronic tuning will be used in the upper frequency range from 2 to 6 mcs, and a self-calibration feature will be included to insure balance of the tuning circuits. The need for more information on required bearing sensitivity is mentioned. Lacking such information, new calculations are under way to set recommended sensitivity requirements for future designs especially in the lower HF range.
Author : United States. Patent Office
Publisher :
ISBN 13 :
Total Pages : 1086 pages
Book Rating : 4.:/5 (319 download)
Download or read book Index of Patents Issued from the United States Patent Office written by United States. Patent Office and published by . This book was released on 1960 with total page 1086 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jay R. Sklar
Publisher : MIT Press
ISBN 13 : 0262038293
Total Pages : 369 pages
Book Rating : 4.2/5 (62 download)
Download or read book Modern HF Signal Detection and Direction Finding written by Jay R. Sklar and published by MIT Press. This book was released on 2018-09-25 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: Detailed descriptions of detection, direction-finding, and signal-estimation methods, using consistent formalisms and notation, emphasizing HF antenna array sensing applications. Adaptive antenna array technology encompasses many powerful interference suppression approaches that exploit spatial differences among signals reaching a radio receiver system. Today, worldwide propagation phenomenology occurring in the High Frequency (HF) radio regime has made such interference common. In this book, Jay Sklar, a longtime researcher at MIT Lincoln Laboratory, presents detailed descriptions of detection, direction-finding, and signal-estimation methods applicable at HF, using consistent formalisms and notation. Modern electronic system technology has made many of these techniques affordable and practical; the goal of the book is to offer practicing engineers a comprehensive and self-contained reference that will encourage more widespread application of these approaches. The book is based on the author's thirty years of managing MIT Lincoln Laboratory work on the application of adaptive antenna array technologies to the sensing of HF communication signals. After an overview of HF propagation phenomenology, communication signal formats, and HF receiver architectural approaches, Sklar describes the HF propagation environment in more detail; introduces important modulation approaches and signaling protocols used at HF; discusses HF receiver system architectural features; and addresses signal processor architecture and its implementation. He then presents the technical foundation for the book: the vector model for a signal received at an adaptive array antenna. He follows this with discussions of actual signal processing techniques for detection and direction finding, including specific direction-finding algorithms; geolocation techniques; and signal estimation.
Author :
Publisher :
ISBN 13 :
Total Pages : 836 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 1000 pages
Book Rating : 4.F/5 ( download)
Download or read book Government Reports Announcements written by and published by . This book was released on 1974 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt:
