Abstract: This paper introduces CORS technology. Taking the application of AHCORS in underwater topographic survey of Chencun hydropower station for example, this paper gives a detailed introduction of the workflow, analyses the measurement accuracy and describes the advantages of this method. It is worthy reference and applied to similar work.

Key words: AHCORS, underwater topographic survey, reservoir

摘要： 介绍了CORS技术。以AHCORS技术在陈村电站库区水下地形测量项目中的应用为例，详细介绍了技术应用的作业流程，分析了测量的精度情况，阐述了AHCORS技术在该项目中的优越性，值得类似作业借鉴使用。

关键词: AHCORS, 水下地形测量, 水库