MIMO-FM: some new experimental results proving the concept feasibility

In this paper, we consider the MIMO-FM concept firstly described in [1]. This particular setting enables to retrieve the elevation of targets in FM passive radar by exploiting the presence of multiple transmitting antennas located at different heights on the same pylon and transmitting signals at different frequencies, without the need for a vertical reception array. In [1], due to a bad sensitivity of the receiver used for the experiment, the MIMOFM concept could be only verified for very close targets. We review here the main features of this concept and in particular of the specific processing it requires. We then present new results obtained with an improved receiver that enables to detect targets at more than 100 km in bistatic range, thus proving the feasibility of the MIMO-FM concept for a various set of targets of configurations.