Estimation of Azimuth Angle Using an Ultrasonic Sensor for Automobile

A typical ultrasonic sensor has a major lobe that extends beyond 45 degrees. Because the wide beam of sensor’s main lobe, which is used for straightforward distance measurement, low angular resolution, conventional methods such as incidence angle and linear measurements cannot accurately determine azimuthal angle. Determining whether one or more objects are present in single also challenging. In this study, angles two placed beneath determined by Doppler frequency shift. An mounted on an automobile to transmit receive ultrasound when car moves towards stationary objects. The picks up object’s reflected shift signal. azimuth estimating received signal using standard processing method. Near-field motion detection systems autonomous driving heavily rely ability evaluate vehicle’s surroundings Effect. These examples low-cost technology active safety, experimental results support. Based error estimation, there average less than 3% between measured computed values.