Based on the jamming-proof method in electric non-stop toll ETC track of multiple-beam antenna

The present invention discloses a kind of jamming-proof method in electric non-stop toll ETC track based on multiple-beam antenna, comprising: multiple-beam antenna carries out signal to the vehicle carried electronic label in antenna communication region, track, place and position is detected; When multiple-beam antenna detects that multiple vehicle carried electronic label is in described communication zone, directed downlink wave beam is launched to each vehicle carried electronic label, each downlink wave beam forms a separate relatively little communicator region respectively, realizes the concurrent communication with described multiple vehicle carried electronic label in the mode of space division multiplexing.The jamming-proof method in ETC track based on multiple-beam antenna that the present invention proposes, utilize beam forming technique, the efficient communication region of ETC transaction can be adjusted, the OBU exact position in real-time detection ETC track, and adjust according to the position of electronic tag and launch directed downlink wave beam, realize the concurrent communication with multiple vehicle carried electronic label in the mode of space division multiplexing, thus improve lane speed, avoid ETC track vehicle with car interference and monkey chatter simultaneously.