Accuracy of height estimation by a system of 2-D netted radars

3-D target position estimation can be obtained by a system of 2-D netted radars performing a suitable fusion of the 2-D plots or tracks from the different located radars. In this paper we discuss the performance of different systems of 2-D netted radars in terms of accuracy of the height estimation. In particular the difference between a monostatic and bistatic system will be investigated.