Comparison of electromagnetic propagation predictions from IREPS and RPO across a coastal transition
Glendening, John W.
Davidson, Kenneth L.
MetadataShow full item record
The Navy's existing electromagnetic propagation prediction software, the Integrated Refractive Effects Prediction System (IREPS), neglects signal leakage from a duct, approximates diffraction, and assumes atmospheric horizontal homogeneity. To ameliorate these deficiencies, the Radio Physics Optics (RPO) program is being developed. This thesis analyzes the significantly different propagation predictions of the two models. RPO predicts significantly shorter propagation ranges in a duct than does IREPS. RPO predicts variations in duct thickness and height which IREPS idealizes, and RPO also computes a signal strength above the duct. Only RPO predicts significant interactions between the duct's dM/dz gradient and frequency. RPO is capable of modeling propagation paths for an inhomogeneous atmosphere. Neglecting atmospheric inhomogeneities in a coastal region introduces significant propagation prediction errors.
Approved for public release; distribution is unlimited.
Showing items related by title, author, creator and subject.
Corley, M.S.; Santiago, F.; T. Martinez; Agrawal, B.N. (2011);The Navy is interested in horizontal laser propagation studies in a maritime environment, near the ocean surface, for applications including imaging and high-energy laser propagation. The Naval Postgraduate School (NPS) ...
Gaussian Beam Propagation in Maritime Atmospheric Turbulence: Long Term Beam Spread and Beam Wander Analysis Toselli, I.; Agrawal, B.N.; S. Restaino, (2010);Laser beam propagation in maritime environment is particularly challenging, not only for scattering and absorption due to high humidity, but also for a different behavior of atmospheric turbulence with respect to terrestrial ...
Observational Evidence for Predictions of Tropical Cyclone Propagation Relative to Environmental Steering Carr, L.E. III; Elsberry, Russell L. (1990-02-15);Theories of vortex motion due to the variations of the Coriolis parameter and environmental vorticity are compared to observations of tropical cyclone motion relative to computed "steering flows" using previously published ...