Aerospace: Landing aircraft under poor conditions: Time-reference scanning beams characterize the all-weather microwave landing system that will replace present systems

Describes the principle of the time-reference scanning-beam microwave landing system (TRSB MLS) which is a system approach to the landing-guidance problem, it can meet a wide variety of diverse-performance, economic, and safety requirements and still supply a universal airborne receiver-processor able to operate with all ground systems. MLS can achieve these objectives because of two major factors: the choice of an operating frequency in the microwave C-band (5 GHz), and the design of its signal format.