The algorithm of coordinate calibration for multiple millimeter wave radars system

Localization and tracking of single millimeter wave radar usually make mistakes when outliers and virtual tracks are generated by multipath effect. Cooperation of multiple millimeter can effectively filter outliers and virtual tracks. However, each radar has its own coordinate system, they are different. The basis for cooperation of multiple radars is coordinate calibration. Thus, this paper proposed an algorithm to acquire the translation matrix and rotation angle which are used for coordinate calibration of multiple millimeter wave radars. Finally, numerical experiments validate that tracks generated by real target will coincide together after the optimal translation and rotation angle. On the contrary, if tracks are not generated by real target, they cannot coincide. This method can be used to filter tracks generated by multipath effect effectively.