Future self-driving vehicles will face complex road scenarios and 4D imaging radar sensor modules in the 77GHz band will be indispensable. Compared with LiDAR, 4D imaging radar is less susceptible to inclement weather conditions and is more in line with safety requirements for self-driving vehicles.
4D imaging radar covers distance, speed, horizontal angle, and vertical angle. Most current conventional radar systems lack vertical angle detection or have very limited sensor capabilities for vertical angles. Relative to conventional systems, 4D imaging radar has achieved a breakthrough in horizontal and vertical angular resolution, with angular resolution of nearly 1o and 0.1o of angular accuracy.
4D imaging radar has more antenna channels than conventional systems, enhancing performance. Conventional radar systems usually have a 3-transmitter/4-receiver antenna architecture but 4D imaging radars can have a transceiver volume several times greater. As 4D imaging radar systems require more 77GHz millimeterwave antennas and transceiver chip integrations, their millimeterwave antenna, IC adapter design, and millimeterwave test validation will play an extremely critical role.
Rohde & Schwarz digital oscilloscopes include the portable R&S RTH series, the mid-range R&S MXO4 and the high-end R&S RTO6 or R&S RTP series. The latter can analyze the demodulation bandwidth of FMCW signals. The company developed the ASIC itself for low noise and high performance, creating the best measurement tool for automotive radar research and development.