The equivalent weight function in robust estimation is usually constructed by the statistics of normal distribution.
抗差估计等价权函数一般由正态分布统计量构造,其临界值(或称准则)一般由实际经验确定。
The advantage and disadvantage of the existing equivalent weight functions are analyzed.
首先分析了现有几种等价权函数的优缺点,然后以适合于测量领域计算的IGGⅢ方案为基础,利用服从于t分布的学生化残差构造等价权函数来进行抗差估计。