1992 年 1992 巻 71 号 p. 11-20
Microwave Landing System (MLS) trasmits basic data and auxiliary data to airbone receiver. The basic data inform the performance and the status of the MLS ground equipments. This data are required processing for angle guidance signals in the airbone MLS receiver. A basic data word consists of 32 bit digital (DPSK) signals.
This paper describes details of hardware simulation for detection of the MLS basic data, using computer controlled microwave circuits, airbone receiver and data processing system. The computer controlled microwave circuits generate reflected and diffracted basic data signals on actual microwave form. The generation of the reflected and the diffracted signals due to a hangar consists of flat plate model. The model validation of mutipath and shadowing due to a hangar is also discussed.
It is shown that the simulation results agree well with the flight experiment results. The hardware simulation shown here, is useful tool to evaluate for installation of MLS ground equipments on individual airport environments.