L-O-S radio links, clearance above tall buildings

Tall buildings can obscure line-of-sight radio links. The paper outlines an algorithm for checking whether or not a given obstacle is likely to cause disruption of communication. The author developed an engineering database which includes all RF emitters in Israel, as well as DTM, propagation path loss, graphics etc. Thus making optimal use of the RF spectrum without causing harmful interference. This computer-aided program also checks that any new 7-storey or higher building will not penetrate the protected Fresnel zone of radio links. Maps drawn to scale, representing the L-O-S radio links and the restrictions on the maximum height of any building along the path, are provided. Thus the algorithm enables one to build, in expensive areas, up to the maximum permissible height, without deterioration in performance