77 GHz FM-CW Radar for FODs detection

Foreign objects and debris (FODs) may cause accidents or disasters. The crash of a Concorde jet in France that killed 113 people in 2000 is an example of the danger created by a thin metal strip that fell from another airplane. Recently, FOD detection systems have been developed and tested on airports. Most of them are based on the association of a mm-Wave radar and an optical sensor. This paper describes the investigation, conducted together with the ENRI and LEAT on a wide band mm-Wave radar module. It is composed a 76-81 GHz front-end and a quasi-optical antenna that is a printed Fresnel reflector operating with circular polarization. The purpose of this paper is to compare the measured responses of selected. This work is conducted within a Sakura project funded by the French and Japanese Ministries of Foreign Affairs.