Impact of synchronization on the ambiguity function shape for PBR based on DVB-T signals

In this paper the use of Digital Video Broadcasting Terrestrial (DVB-T) signals is addressed for Passive Bistatic Radar (PBR). The impact of the synchronization accuracy is analyzed on the PBR Ambiguity Function (AF) shape in term of Peak to Side Lobe Ratio (PSLR), there including timing synchronization, frequency offset synchronization and frequency sampling offset synchronization. Different approaches proposed in the past are considered for the removal of the side peaks of the AF of DVB-T - based PBR. Their performance in the presence of synchronization errors are evaluated both by simulation and against a real data set collected by a PBR prototype developed and fielded at the INFOCOM Dept. of the University of Rome “La Sapienza”.