测绘外业数据采集是测绘项目的前提与基础，也是整个测绘项目中最复杂、工作环境最艰苦的工作。
Mapping field data collection is not only the precondition and foundation of mapping projects, but also the most complex and difficult work in mapping projects.
平台将外业数据采集、空间数据管理和信息发布等功能集成为一体，基本涵盖了土地调查监测的全过程。
The function of field data collection, spatial data management and information distribution are integrated in the platform which involves almost aspects of the process of land survey.
主要研究内容有外业数据采集、长度计算方法、垂度改正、温度改正，并且对测量精度进行了分析和探讨。
The article mainly studies the field data collection, length calculation method, sag correction and temperature mend, and analyzes and discusses the measuring precision.
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