Since the wind speed and direction measurement accuracy of ultrasonic anemometers is low and the noise suppression capacity is poor, a double-array receiving array ultrasonic sensor wind speed and direction measurement technique based on the secondary correlation method is presented. Firstly, an array structure consisting of an ultrasonic transmitting array and two receiving arrays is adopted, secondly, a method for measuring ultrasonic propagation time based on quadratic correlation is given according to the structure of the system, which can effectively improve the accuracy of wind speed and direction measurement by using stronger performance of the quadratic correlation algorithm for noise suppression. Finally, the effectiveness of the proposed method is verified by simulation experiments and a real measurement system built. The experimental results show that the wind speed and direction measurement method of the dual-array receiving array ultrasonic sensor based on the quadratic correlation algorithm has a strong noise suppression capability, and has a higher wind vector measurement accuracy. The practical test shows that the maximum error of wind speed and wind direction angle measurement are 0. 24 m/ s and 2. 4°, which basically meets the accuracy requirements of ultrasonic wind speed and direction measurement.