Target Localisation in Real Time for Non-Coherent Multistatic Passive Radar

A real-time passive radar system has been developed, and a three node multistatic configuration has been constructed for the purpose of target localisation. The target localisation process refers to converting a target from radar coordinates to geographic coordinates. A typical passive radar will use the delay estimate of a target along with an angle estimate from a phased array, to estimate the geographic coordinates of the target. The alternative approach is having multiple receive/transmit nodes providing a delay estimate of the same target, then computing the intersections of target ellipsoids to estimate the target location. This paper demonstrates a real-time system to perform target localisation on three spatially separated passive radar nodes. A formulation is presented which does not rely on a common transmitter or receiver in the network. A number of numerical target localisation algorithms are presented and demonstrated using both a common transmitter, and with two spatially separated transmitters. The accuracy of these algorithms are compared against truth data.