Mass Production Development of 4D Millimeter-Wave Radar Based on a Single Chip

In this paper, a single-chip based design for an automotive 4D millimeter -wave radar is proposed. Compared to conventional 3D millimeter-wave radar, this innovative scheme features a MIMO antenna array and advanced waveform design, significantly enhancing the radar's elevation measurement capabilities. The maximum measurement error is approximately ±0.3° for azimuth within ±50° and about ±0.4° for elevation within ±15°. Extensive road testing had demonstrated that the designed radar can routinely measure targets such as vehicles, pedestrians, and bicycles, while also accurately detecting additional objects like overpasses and guide signs. The cost of this radar is comparable to that of traditional automotive 3D millimeter-wave radar, and it has been successfully integrated into a forward radar system for a specific vehicle model.