Radar imaging with ALG - the on-board low visibility landing aid

MBDA, in conjunction with BAE SYSTEMS Controls, California, are responsible for the design and development of a prototype real time imaging radar system known as ALG, autonomous landing guidance. The radar system generates frequent images that are presented to a pilot on a HUD to enable landing without the use of other landing aids in low visibility conditions. A prototype ALG system has been operational on both commercial and military aircraft since 1996 and trials have included seventy-five 0,0 landings by the USAF using the system. The paper provides a description of ALG and its installation on various platforms. The paper is illustrated with videos showing results of landings, runway incursion and surveillance.