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因GPS技术具有全天候实时性等优点,使得GPS技术在桥梁结构的变形监测中得到了广泛的应用。为满足桥梁健康监测的需要,及时有效地从GPS信号中获得桥梁索塔振动特性至关重要,该文针对GPS监测序列的特点和传统傅里叶变换方法的不足,提出通过基于AR模型的现代功率谱估计方法对索塔监测数据进行处理,得到桥梁振动特性,与理论数据基本吻合。
Due to the advantages of GPS technology such as real-time all-weather, GPS technology has been widely used in the deformation monitoring of bridge structures. In order to meet the need of bridge health monitoring, it is very important to obtain the bridge pylon vibration characteristics from GPS signals in time and efficiently. In view of the characteristics of GPS monitoring sequences and the shortcomings of the traditional Fourier transform method, Power spectrum estimation method to deal with the pylon monitoring data obtained bridge vibration characteristics, and the theoretical data are basically consistent.