The difference between ultrasonic radar and millimeter wave radar:
1. Different application scenarios. Ultrasonic radar is mainly used for parking assistance and blind spot collision warning. It is mainly installed on the front and rear bumpers as a reversing radar and body side ranging. Millimeter wave radar is mainly used in adaptive cruise, automatic brake assist systems, etc. Installed directly in front of the car, inside the vehicle's rear bumper, inside the front bumper, etc.
2. There is a big difference in manufacturing costs. The price of laser radar is generally 500-1,000 US dollars, while the price of the latest 4D imaging millimeter wave radar is only 10-20 US dollars, and the price of ultrasonic radar is the lowest.
The advantage of ultrasonic radar lies in short-distance measurement. Ultrasonic radar is greatly affected by weather conditions, the propagation speed is unstable, and the propagation speed is slow, and vehicles cannot keep up with the changes when driving at high speed. Under different temperature conditions, the measured distances are also different. When measuring distant targets, the echo signals will be weaker and cannot accurately describe the location of obstacles.
The advantages of millimeter-wave radar are long measurement distance, speed recognition, and strong anti-interference ability. This is because millimeter wave radar has narrow beam, high angular resolution, wide frequency band, and good concealment. Compared with infrared and laser equipment, it has good penetration and propagation characteristics of smoke, dust, rain, and fog, and is not affected by bad weather. impact and strong ability to resist environmental changes.