Abstract RADAR OBSTACLE DETECTOR FOR A RAILWAY CROSSING 5 A radar obstacle detector (10) for a railway crossing having a radar beam (R) with a reduced vertical angle (a) is disclosed. The radar obstacle detector may comprise a waveguide (12); a transmitting element (15) for emitting microwaves, the transmitting element being positioned in the waveguide; a sectoral horn (14) coupled to the waveguide, wherein the sectoral horn is 10 configured to radiate a radar beam having an angle of 6 to 0 degrees in the plane of flared sides (24); and a dielectric insert (16) inserted into a first aperture (32) of the sectoral horn. cNj C), '0 '6% ''~-"' CZ\ 4-,', 0 ~ say-mb Ii\AK', \\X, K I' 'I \' N N '-~ ~I '* N N ' N ' I': Nx 'I N\X, 'I NNN:~~* I' N 'I N \.N. " , II N x II x " ' N x I' :' N . ~,* 'I I, -N '1
RADAR OBSTACLE DETECTOR FOR A RAILWAY CROSSING
2019-08-15
Patent
Elektronische Ressource
Englisch
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