Reconstruction and Reciprocal Filter of OFDM Waveforms for DVB-T2 Based Passive Radar

The digital video broadcasting (DVB) transmission standard DVB-T2 published by the ETSI [1] enables a new digital television format for terrestrial transmissions. It currently supersedes DVB-T transmission systems. The introduction of a complicated frame and modulation structure raises several demands to process DVB-T2 in passive radar applications. This includes challenges for the reconstruction and the processing due to different symbol lengths, modulation parameters like the length of FFTs and the overall structure. It is necessary to understand the challenges and accomplish solutions to address these changes. Different solutions were tested by the Fraunhofer FHR passive radar department, Germany for the usage in their PCL systems.