2-D direction finding algorithm based on two L-shape arrays
Ming Li · Chinese Journal of Radio Science · 2010
This paper presents a novel method of two-dimensional(2-D) direction finding based on two L-shape arrays.A new type of three-dimensional(3-D) direction angles has been defined in this method.The angles along each coordinate axis are estimated via rotational invariance techniques(ESPRIT) of uniform linear array(ULA).All estimated angles get pair-matched by spatial relationships of their direction cosines.Simulation results show that the proposed method has good performance in the observation range,higher estimation accuracy than the conventional method especially when the elevation angle is small,and higher success rate of pair-matching than the conventional method at low signal-to-noise ratio(SNR).