Maritime surveillance via multi-frequency DVB-T based passive radar

In this paper, we consider the possibility to jointly exploit multiple frequency channels emitted by the same transmitter to improve target detection capability in a DVB-T based passive radar. In particular, appropriate multi-frequency techniques are presented for target detection to be effective in the considered application. The proposed approaches are validated and compared with reference to several experimental data for maritime surveillance applications. The reported results show that the considered multi-frequency techniques yield a significant enhancement in target detection performance with respect to the single frequency operation.