Study on Roll Angle Estimation of Radar Target Using Null Beam and Rotation Matrix

In recent years, the role of radar has become more than just a basic function such as detection and tracking. An example of multi-functionality is the estimation of target shapes. To solve this problem, in a previous study we proposed an angle spread estimation method that is computationally efficient. However, the accuracy of this method is affected by the roll angle of the radar target. In this study, we propose a roll angle estimation method using a null beam and a rotation matrix.