摘要
研究了基于GPS高频数据进行海浪测量的方法。利用TRACK解算得海上载体高精度的垂向位移,经浪潮分离提取海浪信号,分别采用相关函数法和周期图法估计海浪信号的功率谱,并计算海浪要素。利用实测数据进行试验,结果表明,周期图法推算的平均波高和平均周期精度较高,与测波仪结果差异分别小于2cm和0.25s,基于GPS高频数据的海浪测量方法可有效反演海浪要素。
This paper focus on a wave measurement method based on GPS high-frequency data. Acquiring high- precision vertical displacement of carrier on sea surface via TRACK, then deriving the wave signal from the vertical displacement time series, using correlation function method and periodic diagram methodto estimate the signal power spectrum respectively, and figuring out the wave elements.Using the measured data for experiment, the results show that the performance of periodic diagram method is better, with the differences of average wave height and average period within 2cm and 0.25s compared with the results of the wave gauge, confirming the feasibility of the method.
出处
《海洋测绘》
CSCD
2015年第6期37-40,共4页
Hydrographic Surveying and Charting
基金
国家自然科学基金(41274017
40974001)
关键词
GPS
海浪测量
TRACK
高频
功率谱
相关函数法
周期图法
GPS
wave measurement
TRACK
high-frequency
power-spectrum
comelation function method
periodic diagram method
