Sea-Surface Specular Multipath for Surface-Level Antennas: Phase 1
Abstract
This document describes a specular multipath simulation for antennas located close to a sea surface. The antennas are circularly polarized but the ray-trace implementation readily accommodates any other polarizations. The transmitted signal S(T)(t) arrives at the receiver's antenna along the direct path and from multiple reflections off the sea surface. The surface-level antenna turns the multipath into multiplicative noise-assuming the receiver is narrow band. Under this narrow-band assumption, the received signal s(R)(t) is approximated by modulating the transmitted signal s(T)(t) with this multiplicative noise: S(R)(t) = a(t) x sT(t). The multiplicative noise ?a(t)! is determined by the sea surface, the elevation angle of the transmitted signal path, and the receiver's antenna. By sweeping over various realizations of the sea surfaces, elevation angles, and various antenna heights and speeds, the systems engineer can estimate sea-surface specular multipath effects on the surface-to-satellite link.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2005
- Accession Number
- ADA436339
Entities
People
- A. A. Beex
- B. Zeidler
- J. C. Allen
- R. E. Goshorn
Organizations
- Naval Information Warfare Systems Command