Object trajectory tracking plays a significant role in real-time monit
oring systems. This paper proposes a method to achieve higher accuraci
es in computing objects' trajectories and estimate their shape by suit
ably fusing multi-radar measurements. Since each sensor is affected by
an error depending on its location and on the target-radar mutual pos
ition, an iterative procedure has been considered, in order to entirel
y exploit the accuracy of each radar. Results obtained by applying the
proposed algorithm to simulated sequences of radar data are reported.