Oblique propagation

1 January 1990

book chapter
Published by Institution of Engineering and Technology (IET)

p. 155-207
https://doi.org/10.1049/pbew031e_ch6

Abstract

Although vertical soundings are of great value in the study of ionospheric structure and dynamics, radio users are concerned with oblique propagation, e.g. point-to-point, broadcasting, and surveillance. In this chapter we concern ourselves with the applications of vertical data to problems encountered in oblique propagation, e.g. with methods of calculating maximum usable frequencies and with identification of echo structures.

Keywords

ELEVATION ANGLE
HIGH FREQUENCY RADIOWAVE PROPAGATION
PLANE EARTH-PLANE IONOSPHERE CONFIGURATION
EARTH-IONOSPHERE CURVATURE EFFECTS
SCATTER PROPAGATION
GEOMAGNETIC FIELD EFFECTS
IONOSPHERIC HORIZONTAL GRADIENTS
VERTICAL IONOSPHERIC DATA
MAXIMUM USABLE FREQUENCIES
BROADCASTING APPLICATIONS
MULTIPATH PROPAGATION TIMES
POINT TO POINT PROPAGATION
OBLIQUE RADIOWAVE PROPAGATION
OBLIQUE IONOGRAMS
ECHO STRUCTURE IDENTIFICATION
SURVEILLANCE APPLICATIONS

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