Pulse sequence optimization in time-modulated arrays for secure communications
Résumé
The sideband radiations (SR) generated in time-modulated linear arrays (TMLAs) because of the periodicity of the modulating pulse sequence are exploited for secure communication purposes. The pulse sequence controlling the on/off status of the array elements is optimized by means of a binary Genetic Algorithm (GA) in order to maximize the distortion of the signal transmitted by the array along undesired directions while keeping it unaltered along the angular region of interest.