Summary Report on NRL Participation in the Microwave Landing System Program.
NAVAL RESEARCH LAB WASHINGTON DC
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This report summarizes activity by the Radar Devision of the Naval Research Laboratory in support of the Microwave Landing System program in the time period May 1975 through September 1979. This technical support was primarily associated with the ground scanning antennas. Initial emphasis was on microwave optical scanning techniques. This phase of the effort resulted in significant innovative contributions, but the more pressing objectives of the program shifted to the analysis of problems associated with phased array antennas. The Naval Research Laboratory contributed to the study of phased array in several ways. Computer simulations of internal monitoring systems, which can locate failed components, were carried out. A performance simulation of a general phased array using digital phase shifters was written. The performance characteristics of digital phase shifters were measured and statistically analyzed. Several research contracts for promising phased array techniques were awarded to industrial contractors. In addition to research on the primary MLS functions, which involve scanning linear phased array antennas, NRL has studied the realization of a 360-degree scanning antenna utilizing a circular array. This report contains a nontechnical review of all activities, supported by technical appendices and a listing of reports and memoranda. Author
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