NEUTRALISATION SYSTEM FOR RADIO-CONTROLLED EXPLOSIVE DEVICES

The present invention relates to technical means for fighting terrorism and can be used for preventing the remote-triggered explosion of mechanical transport systems, such as light or heavy vehicles, or other objects in which radio-controlled explosive devices are illegally mounted. The neutralisation system for radio-controlled explosive devices includes a wideband interference generator, a transmitter antenna and a modulator. This system is characterised in that it also comprises a pair of additional interference generators having their outputs connected to the transmitter antenna. This antenna is made in the shape of a flexible closed loop which is attached on the metallic bottom of a vehicle, wherein the distance between the bottom and the loop represents at least 0.1 % of the maximal length of the wave of the electro-magnetic field created by the interference thus generated. This system also includes an on/off device as well as a first and second passive and non-linear electric members. The outputs of said members are connected to the isolated metallic conductors of the loop antenna, while the other conductors of said antenna are connected to the outputs of the additional interference generators. The neutralisation system also comprises an actuation instrument that uses a radio line for remotely switching it on, wherein the output of said instrument is connected to the first input of the on/off device. The system finally comprises a time relay having its output connected to the second input of the on/off device. The additional interference generators and the wideband interference generator have their first inputs connected to the output of the on/off device. The modulator output is connected to the inputs of the first and second passive and non-linear electric members as well as to the second inputs of the additional interference generators and to the second input of the and wideband interference generator. Cette invention se rapporte aux moyens techniques de lutte contre le terrorisme. Elle peut être utilisée afin d'empêcher l'explosion déclenchée à distance de systèmes de transport mécaniques, tels que des véhicules lourds ou légers, ou d'autres objets dans lesquels sont installés de manière illégale des dispositifs explosifs radiocommandés. Cette invention concerne plus particulièrement un système de neutralisation de dispositifs explosifs radiocommandés, lequel comprend un générateur d'interférences à bande large, une antenne émettrice et un modul