Systems and methods are disclosed herein for determining relative orientation between a self-propelled device and a mobile computing device by utilizing the asymmetric radiation pattern of communication link emissions by the self-propelled device. Upon establishing the communication link, the self-propelled device may perform a spin, thereby enabling the self-propelled device and/or the mobile computing device to detect radiated pulses due to the asymmetry in the link. A direction may be determined based on such pulses, which may be utilized for calibration purposes.