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An experimental determination of the reflection coefficient over rough te rrain is r epo rted . The reflected signal received over rough terrain is considered to be mad e up oft wo components, one that is a specular component and the other a R ayleigh-distr ibuted componen t. Where one term inal is low, the Rayleigh component is considered to be small with respect to the sp.ecular component ?lIt increas:s in relative magnitude as the height of the lower te rJl?ln almcreases. A tenmnal h eIght IS reached where the specular component is no longer ~Hgl11~Cant, and the reflected energy is esse ntia lly Rayleigh-distributed . A t erm inal height IS qUickly reached a,?ove which the mea n valu e of the reflected energy is relatively constant, of a low value, a nd md epend ent of the grazing angle.

Study at 1046 megacycles per second of the reflection coefficient of irregular terrain at grazing angles