基于EMD的GNSS/加速度计振动监测模型研究

采用GNSS与加速度计相结合的方式对结构进行振动监测，以获取结构动态响应，同时提出一种基于经验模态分解(EMD)与切比雪夫滤波相结合的混合型滤波器对GNSS采集得到的数据进行滤波处理，识别结构高频与低频动态位移，与加速度数据积分得到的高频动态位移结合重构整体动态位移。模拟实验验证了重构位移算法的可行性。

Research on Vibration Monitoring Model of GNSS/Accelerometer Based on EMD

In order to obtain the dynamic response of the structure, GNSS and accelerometer are combined to monitor the vibration. We propose a hybrid filter based on empirical mode decomposition(EMD) and Chebyshev filter. We filter the data collected by GNSS to identify the high-frequency and low-frequency dynamic displacements of the structure. The high-frequency dynamic displacements are integrated with the acceleration data to reconstruct the overall dynamic displacements. Through a series of simulation data, we verify the feasibility of the reconstruction displacement algorithm.