基于经验模态分解的舰船液位测量方法研究

Research of the Ship Liquid Height Measurement Based on the Empirical Mode Decomposition

介绍了经验模态分解理论,及基于经验模态分解的液面高度测量分析方法。用经验模态分解法对采集到的多组不同海域液位波动信号进行分析处理,去除信号中各瞬时频率成分,提取信号的平均趋势。计算液位高度并与实际液位比较,验证了该方法的准确性、可行性。

The theory of empirical mode decomposition (EMD) and liquid height measurement and analysis method based on EMD are presented. Multiple sets of liquid height fluctuating signals are collected in different sea areas and then analyzed and processed by using empirical mode decomposition. The average trend of the signals in extracted, while the transient frequency compositions are eliminated. By comparing the calculated level height and the real value, the accuracy and feasibility of this method have been verified.