Title :
Improved numerical solution of Ott´s integral equation for HF ground wave attenuation
Author :
Lipa, Belinda J. ; Barric, Donald E.
Author_Institution :
Acurex Corp., Mountain View, CA, USA
Abstract :
An alternative solution is presented for Ott´s (1970) integral equation for the attenuation of a high-frequency vertically polarized radio signal propagating over rough inhomogeneous terrain. The method circumvents the numerical stability occurring with an earlier method at steep slopes and/or high radar frequencies. The method is illustrated by application to a steep profile at 20.08 MHz. The obtained values for the attenuation function agree well with experimental measurements.<>
Keywords :
electromagnetic wave absorption; integral equations; radiowave propagation; 20.08 MHz; HF ground wave attenuation; Ott´s integral equation; numerical solution; radiowave propagation; rough inhomogeneous terrain; steep profile; vertically polarized radio signal; Attenuation measurement; Frequency; Hafnium; Integral equations; Loss measurement; Polarization; Propagation losses; Radar theory; Surface impedance; Surface waves;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
