부산대학교 도서관

76/79GHz chirp sequence (CS) radar is widely used in automated driving system and ADAS (Advanced Driver Assistance System) and is being rapidly deployed. As a number of CS radars use the same frequency spectrum, it is becoming more important to improve spectrum efficiency of automotive CS radars. Assuming all CS radars use the same design parameters, only narrowband interference resulting in false detection of the targets occurs and mutual interference suppression among multiple CS radars can improve the spectrum efficiency of automotive CS radars. The authors are proposing narrowband interference suppression using envelop detection-based interference replica generation for spectrum efficiency enhancement of automotive CS radars. This paper describes experimental evaluation of the proposed scheme and discusses limitations in current system design and solutions for interference suppression performance enhancement.