全球定位系统（GPS）浮标是高度计海面高度定标的重要仪器。本文介绍了GPS浮标的组成和工作原理，分别对GPS浮标的外型设计、舱体设计、密封性设计、供电设计做了详细介绍，最后利用数值模拟的方式，对设计的GPS浮标在3 级海况下的摇摆和升沉响应进行模拟试验。结果表明自主设计的GPS浮标能够满足海上高度计海面高度定标的需求。

GPS buoy is the important instrument for the calibration of altimeter sea surface height. This paper introduces the composition and operating principle of GPS buoy, and describes in detail the design of shape, cabin, leak-proofness, and current supply. And finally used the numerical simulation, the rock and undulation of GPS buoy were experimented in the 3 class sea state condition. The result shows that designed GPS buoy can meet the challenge of altimeter sea surface height calibration on the sea experiment condition.