Analysis of the effects of ionospheric sampling of reflection points near-path for high-frequency single-site-location direction finding systems

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90Dec_Teixeira_Filho.pdf (1.8 MB)
Authors
Teixeira Filho, Carlos Augusto
Subjects
Single-Site-Location
Direction-Finding
High-Frequency
Estimation
Sampling
Advisors
Adler, Richard W.
Date of Issue
1990-12
Date
December 1990
Publisher
Monterey California. Naval Postgraduate School
Language
Abstract
This thesis suggests a method to estimate the current value of an ionospheric parameter. The proposed method is based on the known variability of the observed current values near path and utilizes data derived from ionospheric sampling measurements. Analysis of errors is provided in Single-Site-Location High-Frequency Direction Finding (SSL-HFDF), arising from ionospheric irregularities such as Es (sporadic E), ionospheric tilts, and traveling ionospheric disturbances (TIDs). The characteristics of Es, tilts and TIDs for mid-latitudes are summarized in tables. The spatial and temporal coherence of ionospheric variabilities and irregularities is analyzed over the electron density. Practical results, measurements, and studies are presented on SSL-HFDF. A survey of characteristics of the ionosphere in the equatorial region is also provided. Finally, some recommendations are given to maximize the applicability of the proposed method.
Type
Thesis
Description
URI
https://hdl.handle.net/10945/27688
Series/Report No
Department
Electronic Warfare Academic Group
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
vi, 60 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
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Copyright is reserved by the copyright owner
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