Optimal receivers positioning for target motion parameters estimation in dual-baseline FSR systems: preliminary results

An important field of application of Forward Scatter Radar systems (both single-node and multi-node) consists in the estimation of the target kinematic parameters. In the past different studies have shown the possibility to extract these parameters by estimating the main target signal parameters (i.e. Doppler rate, derivative of the Doppler rate) and the time instant at which the target crosses the baseline. The estimation accuracy of the motion parameters depends on the estimation accuracy of the target signal parameters and on the FSR geometry. In this frame, the main goal of this paper is to provide a simple tool which can be used to (i) optimize the receivers position in a dual baseline FSR configuration and (ii) evaluate the minimum angular separation between the two baselines that guarantees the estimation of all the kinematic parameters with a desired accuracy. To this aim, for a target following a linear trajectory, the motion parameters are estimated by jointly exploiting the time delay between the signals acquired at the two different receivers and the estimates of their Doppler rates.