Ultrasonic wave range-measurement system based on time difference of arrival (TDOA)

An ultrasonic wave range-measurement system based on time difference of arrival (TDOA) comprises an ultrasonic wave sensor, a radio frequency sensor, a first emission module, a second emission module, a receiving module, a display module and a speech output module. The ultrasonic wave sensor is connected with the first emission module, the radio frequency sensor is connected with the second emission module, the receiving module is respectively connected with the first emission module and the second emission module, and the display module and the speech output module are respectively connected with the receiving module. The ultrasonic wave range-measurement system has the advantages of being strong in anti-interference capacity and high in measurement accuracy without measuring blind areas.