数据定位 meaning in English

data positioning

Using carrier phase , the first challenge is determining initial phase bias
在利用载波观测数据定位时，讨论了整周模糊初始化问题。
On the base of the schema the paper researchs how to make data filtering with xml template , how to make data finding with xpath , and how to make data transmitting with xmlhttp etc
文中还以这些方案为基础探讨了如何利用xml模板进行数据筛选，利用xpath进行数据定位，利用xmlhttp进行数据传递等相关技术及其实现。