摘要
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。
Because the GPS technology has the advantages of all-weather and real-time and so on,so it has been widely used in the deformation monitoring of bridges structure. To satisfy the health monitoring for bridge,obtaining the vibration characteristic of bridge tower from GPS signals timely and effectively is crucial. In this paper,according to the characteristics of GPS monitoring sequence and the deficiency of tradition Fourier transformation method,the modern power spectral estimation method based on AR model is provide to process the monitoring data of cable tower. The vibration characteristics of bridge are obtained,and they agree with the theoretical data basically.
出处
《勘察科学技术》
2015年第3期12-15,共4页
Site Investigation Science and Technology
关键词
索塔
GPS变形监测
现代谱估计
振动分析
cable tower
GPS deformation monitoring
modern spectral estimation
vibration analysis
