以正交函数和超声波测流计算理论为基础，结合梯形断面流速分布规律，分别应用高斯和马尔柯夫数值计算方法，推导出梯形渠道多声道超声波测流流量计算、声道分布坐标及声道加权积分系数的数学模型，并利用实测资料对数学模型的精确性进行了验证 Based on the theory of orthogonal function and ultrasonic flow measurement, combined with the flow rate distribution of trapezoidal section, Gaussian and Markov numerical calculation methods were respectively used to derive the calculation results of multi-channel ultrasonic flow measurement of trapezoidal channels, the distribution of sound channel coordinates and sound The weighted integral coefficient of the mathematical model, and the use of measured data to verify the accuracy of the mathematical model