Feasibility analysis of utilizing the `8k mode'' DVB-T signal in passive radar applications

One non-cooperative illuminator recently considered for passive radar applications is thedvb-t (digital video broadcasting-terrestrial) signal. the thumbtack ambiguity function of the dvb-t signal, in addition to being stationary over time, makes such a signal a good candidate for suchapplications. however, certain ambiguities in its ambiguity function necessitates certain issues to becarefully considered when the dvb-t signal is to be utilized in these scenarios. methods have been alreadyproposed to resolve them. in this paper, after studying the origins of these ambiguities, we propose specialprocessing schemes to reduce the complexity of the parts associated with resolving these ambiguitiesefficiently. then, the dvb-t's cross ambiguity function (caf) processing gain is carefully studied, and itis shown that its noisy nature results in a high processing gain and resolution. finally, the detection rangeof the dvb-t based passive radar is examined, besides simulations, to show the practical feasibility of thissignal for cases of passive coherent location.