Multipath propagation of pulse signals in airborne antenna systems

Abstract

A model is presented for the calculation of the magnitude and delay of a distinct pulse signal reflected from the surface of, the earth between a pair of airborne antennas. The model considers the multipath propagation due to reflection from the earth's surface alone; i.e. one line-of-site (LOS) path, and one reflected-path signal. Using the analytical results of this model, it will be possible for a system test engineer to develop test profiles simulating the occurrence of multiple pulses at the receiver for arbitrary flight profiles and communication system parameters. The model provides results for horizontal and vertical antenna polarizations. Angles of departure and arrival for the transmitter and receiver respectively can be obtained for both paths, for use in antenna gain pattern formulas. A method is also offered to evaluate the given parameters of an arbitrary system to make a quick determination of the extent of the multipath problem. A preliminary inspection of the system may reveal that the reflected pulse is greatly attenuated, or that the delay is either too small or too large to effect the performance of the receiver. In these cases, calculation of the reflected pulse characteristics could be omitted.

Notes

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Graduation Date

1992

Semester

Spring

Advisor

Christodoulou, Christos

Degree

Master of Arts (M.A.)

College

College of Engineering

Department

Electrical Engineering

Degree Program

Electrical Engineering

Format

PDF

Pages

70 p.

Language

English

Length of Campus-only Access

None

Access Status

Masters Thesis (Open Access)

Identifier

DP0029866

Subjects

Dissertations, Academic -- Engineering; Engineering -- Dissertations, Academic

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