RAIN IS THE PRINCIPAL CAUSE OF SIGNAL DEGRADATIONS IN THE TERRESTRIAL AND SATELLITE COMMUNICATIONS SYSTEMS OPERATING AT CENTIMETER AND MILLIMETER WAVELENGTHS.

RAIN IS THE PRINCIPAL CAUSE OF SIGNAL DEGRADATIONS IN THE TERRESTRIAL AND SATELLITE COMMUNICATIONS SYSTEMS OPERATING AT CENTIMETER AND MILLIMETER WAVELENGTHS. A WIDE RANGE OF UNCERTAINTY ON THE SUBJECT EXISTS AND THE COMMUNICATIONS SYSTEM DESIGNERS ARE CONFRONTED WITH CONFLICTING DATA. THE PROPOSED STUDY HAS THREE OBJECTIVE: (I) THE COLLECTION, COMPILATION, EVALUATION AND CORRELATION OF EXISTING OBTAINABLE DATS; (II) AN INDEPTH REVIEW OF EACH OF THE LEADING MODELS CURRENTLY AVAILABLE TO SYSTEM ENGINEERS FOR MICROWAVE COMMUNICATIONS APPLICATIONS; (III) A CRITICAL ASSESSMENT OF THE VALIDITIES AND LIMITATIONS OF EACH MODEL IN REFERENCE TO THE OVERALL DATA BASE, AND CONSEQUENTLY THE ESTABLISHMENT OF A DESIGN HANDBOOK TO AID COMMUNICATIONS SYSTEM DESIGNS.