Multistatic GNSS-based passive radar for maritime surveillance with long integration times. Experimental results

The focus of this paper is on multi-transmitter GNSS passive radar for maritime surveillance. Particularly, working in the range-Doppler domain, the possibility to integrate over long time intervals (required to counteract restricted power budget provided by navigation satellites) the returns from a moving target illuminated by multiple GNSS transmitters is experimentally demonstrated. The obtained results show that the exploitation of multiple satellites can provide an improvement in the detection performance potentially enabling the detection of targets not detectable with the single satellites at the same time allowing target localization.