Low altitude near the horizon propagation: a comparison between RPO and M-Layer
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Authors
Wu, Chi-Wei.
Subjects
Propagation loss
Radio physical optics CSCI
M-layer
Parabolic equation
Waveguide mode
Evaporation duct
Surface-based duct
Radio physical optics CSCI
M-layer
Parabolic equation
Waveguide mode
Evaporation duct
Surface-based duct
Advisors
Lee, Hung-Mou
Date of Issue
1993-12
Date
December 1993
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
Predictions of propagation loss made by the computer programs Radio Physical Optics (RPO) Computer Software Configuration Item (CSCI) and M-Layer are compared. The results of the high frequency parabolic equation approximation, as formulated in RPO, agree almost always with those derived from the low frequency modal computation as formulated in M-Layer. But at low altitudes in the neighborhood of the radar horizon, deviations between RPO and M-Layer become significant for some cases. RPO appears not to be able to properly account for the effects of a high altitude surface-based duct at a short range. Since the discrepancies fan in regions of importance to naval operations, a definitive resolution is an urgent task to be undertaken in the immediate future.
Type
Thesis
Description
Series/Report No
Department
Department of Electrical and Computer Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funding
Format
133 p. :|bill.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
Copyright is reserved by copyright owner.