Experimental passive SAR imaging exploiting LTE, DVB, and DAB signals

Commercial OFDM signals of opportunity have been studied for numerous radar applications, including SAR imaging. This paper demonstrates the utility of long term evolution (LTE), digital video broadcast (DVB), and digital audio broadcast (DAB) signals for producing passive SAR images by employing a previously derived OFDM matched filter model. Both full matched filters and partially matched filters (using only a priori known signal features) are considered for generating phase history from collected receiver data. Small-scale, experimental SAR images are produced illustrating the merits of the processing schemes and signals of opportunity.