中文摘要：

针对ITRF转换中，两套坐标系下的点坐标值均存在误差，且各点之间精度不等、甚至相关的情况，提出利用加权总体最小二乘方法对转换参数进行解算。通过模拟数据和真实数据的解算证明r加权总体最小二乘方法在ITRF转换中的适用性，与其他方法相比，利用加权总体最小二乘方法能够得到准确的、更为合理的转换参数。

英文摘要：

According to the fact that the points in two transformational coordinate systems are all affected by random errors, which make the observation vector and coefficient matrix in error equations both include errors, and even, these observations and elements in coefficient matrix may be heteroscedastic and correlated. We employ the weighted total least squares solution to calculate the parameters of ITRF transformation. To demonstrate the perform- ance and efficiency of the application of WTLS solution in coordinate transformation, the simulation and real experi- ments are implemented. The results show that the WTLS solution is correct and more reasonable.