| 基于GNSS的铁路通信铁塔变形监测方法 |
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| 引用本文： | 封博卿,贺晗,李聪旭,杨峰雁,孙国庆.基于GNSS的铁路通信铁塔变形监测方法[J].铁道建筑,2020(9):154-158. |
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| 作者姓名： | 封博卿 贺晗 李聪旭 杨峰雁 孙国庆 |
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| 作者单位： | 中国铁道科学研究院研究生部;中国铁道科学研究院集团有限公司电子计算技术研究所;京沪高速铁路股份有限公司 |
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| 基金项目： | 中国铁路总公司科技研究开发计划(P2018G051)。 |
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| 摘 要： | 在铁路通信铁塔顶部布设2台全球导航卫星系统(GNSS)监测设备,并采用实时动态载波相位差分技术(RTK)测量以实时获得其坐标观测值,从而计算出铁塔的倾斜度及水平偏角。在塔基布设1台GNSS监测设备,采用静态后处理技术计算得到铁塔整体位移及沉降,进而得到通信铁塔整体的变形量。考虑到RTK测量结果可能存在测量粗差,采用抗差卡尔曼滤波对坐标观测数据进行处理,削弱粗差和偶然误差影响。通过仿真数据分析,证实在GNSS观测结果中包含粗差的情况下坐标滤波值能有效抵抗粗差影响,且与真值之间的差值小于预设的测量噪声误差。
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| 关 键 词： | 铁路 通信铁塔 试验研究 抗差卡尔曼滤波 GNSS RTK 变形监测 |
Deformation Monitoring Method of Railway Communication Tower Based on GNSS |
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| FENG Boqing,HE Han,LI Congxu,YANG Fengyan,SUN Guoqing.Deformation Monitoring Method of Railway Communication Tower Based on GNSS[J].Railway Engineering,2020(9):154-158. |
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| Authors: | FENG Boqing HE Han LI Congxu YANG Fengyan SUN Guoqing |
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| Institution: | (Postgraduate Department,China Academy of Railway Sciences,Beijing 100081,China;Institute of Computing Technologies,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;Beijing-Shanghai High-speed Railway Corporation Limited,Beijing 100038,China) |
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| Abstract: | Two Global Navigation Satellite System(GNSS)monitoring devices were installed on the top of the railway communication tower,and Real-time Kinematic(RTK)carrier phase difference technology was used to measure the and obtain the real-time coordinate observation value,the inclination and horizontal deflection angle of the tower was calculated.A GNSS monitoring device was set at the base of the tower,and the overall displacement and settlement of the tower were calculated by using static post-processing technology,thereby obtaining the overall deformation of the communication tower.Considering that there may be gross errors in the RTK measurement results,the robust Kalman filter was used to process the coordinate observation data to weaken the influence of gross errors and accidental errors.Through simulation data analysis,it is confirmed that the coordinate filter value can effectively resist the influence of the gross error when the gross error is included in the GNSS observation result,and the difference from the true value is less than the preset measurement noise error. |
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| Keywords: | railway communication tower experimental research robust Kalman filter GNSS RTK deformation monitoring |
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