Azimuth angle errors as affected Fresnel diffraction on the large obstacles

The Experimental researches of the millimeter and centimeter radio waves propagation above land and sea at small heights the transmitter and reciever points are showed that in many cases the influence of the real surface towards the radiosystem characteristic can be described with the use of theory of Fresnel diffraction. In this work the errors of measuring of azimuth are estimated in approaching of Fresnel on the border of opaque screen. General case is examinated: the plaine of screen is turned about vertical axis on some angle a , and her edge roughness, including, is inclined on a angle θ . Such model the large enough circle of meeting in practice cases the work of very high frequency radiosystems include.