基于等值线的GPS高程粗差处理方法研究

Study on Dealing with GPS' Height Gross Error

GPS高程受高程异常和观测粗差等多个因素的影响,不能把观测粗差作为高程异常来进行拟合处理;本文提出基于等值线来识别GPS高程粗差的方法,并通过实例进行了验证。选择合适的等值线间距(临界值)可以有效地发现粗差,求得各GPS点的正常高。

GPS＇ height is effected by some factors such as height anomaly and gross error in measurements, gross error in measurements can＂ t imitated as height anomaly. The method is put forward based on isoline map discerning GPS＇ height gross error, and tested by a example. Selecting suitable isoline interval （critical value） may find gross error effectively, the normal height of GPS＇ points is get.