中文摘要：

介绍了抗差最小二乘法的原理及其优点,分析了几种常见的权函数;研究了用抗差最小二乘方法（IGG3方案）对天文测量的时间比对数据进行处理方法;最后,用算例说明了抗差最小二乘法对数据处理结果比最小二乘理论＋3S法则处理结果精度更高。

英文摘要：

We introduce the principle and advantages of robust least square method（RLS） and analyzes several weighting functions.We also investigate the application of RLS to astronomical surveying time comparison data processing.At last,we give an example showing that results from RLS are of higher accuracy than those from LSQ and 3S method.