In the framework of research activity on passive radar systems for target detection and localization in this thesis three main topics are presented: (i) the joint exploitation of the signals of opportunity received at multiple carrier frequencies, which can provide the best performance in term of detection capability, since it exploits all available information and makes the detection scheme robust with respect to both the content of the broadcast radio program and the propagation channel conditions; (ii) the setup of a new acquisition device with up to four input channels; (iii) the exploitation of new promising waveforms of opportunity (DVB-T signals), which represent an interesting choice for PBR systems development.
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