A method for adding noise before the transmission of a radio signal by a transmitter, device and associated computer program

Abstract

Noise-making method before emission of a radio signal by a transmitter, associated device and computer program The present invention relates to a method and a device for noise-making before emission of a radio signal by a transmitter belonging to a given initial class of transmitters, in order to render inoperative a detection of a class of membership of the transmitter by implementation of a classification model previously trained by machine learning to detect a class of transmitter from a spectrogram. The device is configured to implement modules for: obtaining (18) a first modulated signal in I/Q format, time-frequency transformation (24) of the first modulated signal to obtain a first spectrogram, application (26) of an adversary attack method, knowing the classification model, the adversary attack method allowing a modified spectrogram to be obtained from the first spectrogram, such that said classification model provides an erroneous emitter class from the modified spectrogram, approximate inverse transformation (28) of the modified spectrogram to obtain a second modulated signal. Figure for the abstract: Figure 1

Inventors

HÉLIOU ALICE
THOUVENOT VINCENT
BETTAN OLIVIER
SAUSSET FRANÇOIS

Assignees

THALES SA

Dates

Publication Date: 20260501
Application Date: 20240604
Priority Date: 20240604