File:FEDLINK - United States Federal Collection (IA highfrequencyhfr1094534806).pdf
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Summary[edit]
High Frequency (HF) radio signal amplitude characteristics, HF receiver site performance criteria, and expanding the dynamic range of HF digital new energy receivers by strong signal elimination ( ) | |
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Author |
Lott, Gus K., Jr. |
Title |
High Frequency (HF) radio signal amplitude characteristics, HF receiver site performance criteria, and expanding the dynamic range of HF digital new energy receivers by strong signal elimination |
Publisher |
Monterey, California: Naval Postgraduate School |
Description |
The dissertation discusses High Frequency (HF) radio sources. It consolidates data from all available, published HF spectrum surveys. The author conducted a new HF survey using detection of new energy events. The first cumulative probability distribution function for the amplitude of detected non-broadcast HF signals is developed, and the distribution is log-normal. HF receiver site performance quantification is possible using the HF signal distributions. Site performance degradation results from noise, interference, and signal path attenuation. Noise examples are presented in a 3-D format of time, frequency, and amplitude. Graphs are presented that allow estimation of the percentage of HF non-broadcast signals lost as a function of noise and interference levels. Limitations of HF search receivers using analog-to-digital converters as the receiver front-end are discussed. Derived bounds on AD converter performance show that today's digital technology does not provide enough dynamic range, sensitivity, or sampling rate. Alternative dynamic range extension methods are examined. A new method of dynamic range extension by removing the strongest signals present is presented. Greater receiver sensitivity results from changing the HF signal environment seen by the AD converter. The new method uses a phase-tracking network and signal reconstruction techniques. Subjects: A/D; Analog-to-digital converter; Dynamic range; Electromagnetic compatibility; HF receiver; HF signal amplitude probability distribution; HF signals; Log-normal; New energy detection; Radio; Receiver site performance; Receivers and reception.; Spectrum survey; Strong signal elimination; Wideband receiver |
Language | English |
Publication date |
June 1990 publication_date QS:P577,+1990-06-00T00:00:00Z/10 |
Current location |
IA Collections: navalpostgraduateschoollibrary; fedlink |
Accession number |
highfrequencyhfr1094534806 |
Source | |
Permission (Reusing this file) |
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted. |
Licensing[edit]
Public domainPublic domainfalsefalse |
This file is a work of a sailor or employee of the U.S. Navy, taken or made as part of that person's official duties. As a work of the U.S. federal government, it is in the public domain in the United States.
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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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current | 04:26, 9 July 2020 | 1,275 × 1,650, 259 pages (8.59 MB) | Fæ (talk | contribs) | FEDLINK - United States Federal Collection highfrequencyhfr1094534806 (User talk:Fæ/IA books#Fork8) (batch 1990-1992 #4873) |
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Short title | High Frequency (HF) radio signal amplitude characteristics, HF receiver site performance criteria, and expanding the dynamic range of HF digital new energy receivers by strong signal elimination |
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Author | Lott, Gus K., Jr. |
Software used | Lott, Gus K., Jr. |
Conversion program | Adobe Acrobat 9.41 Paper Capture Plug-in |
Encrypted | no |
Page size |
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Version of PDF format | 1.4 |