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Propeller Modulation Effects on a Scanning-Beam Microwave Landing System
SAE Technical Paper Series
This report presents the results of an investigation to assess the modulation effects on microwave signals transmitted through rotating propeller blades. Interruption of the antenna "line-ofsight" signal by the rotating propeller causes a variation of path loss, which produces essentially an amplitude modulation of the received signal. This interruption or blockage effect is generally only partial because of edge diffraction around the particular interfering propeller blade. Signals reflecteddoi:10.4271/750521 fatcat:gmgi6iltwredpla7gmrz6h7ggm