作者：叶青, 程智, 胡小红, 陈俊, 孙雄
作者单位：国网浙江省电力有限衢州供电公司，浙江 衢州 324000
关键词：雷达波相位干涉;测量技术;杆塔结构;形变监测;干涉纹;相位差解缠
摘要：
为实现不同型号杆塔结构形变的精确监测，研究基于雷达波相位干涉技术的杆塔结构形变监测方法。差分干涉处理少量合成孔径雷达（synthetic aperture radar，SAR）数据建立多基线干涉纹图集，依据相干系数均值以及点目标检测提取相干目标，建立多基线干涉相位模型从时间域角度迭代处理相干目标干涉相位，采用基于空间搜索的邻近点目标干涉相位差解缠方法求解多基线干涉相位模型，实现相位解缠，利用非线性形变相位与大气延迟相位分离方法提升相干目标线性形变精准性，实现杆塔结构形变监测。结果表明，该方法可实现单筒塔、三筒塔以及角钢塔杆塔结构形变的精确监测，监测精度可达到亚毫米量级，实现杆塔变形状态有效分析。
Research on deformation monitoring of tower structure based on radar wave phase interferometry
YE Qing, CHENG Zhi, HU Xiaohong, CHEN Jun, SUN Xiong
Quzhou Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd., Quzhou 324000, China
Abstract: In order to realize the precise monitoring of the structural deformation of different types of towers, a method for monitoring the deformation of the tower structure based on radar wave phase interferometry is studied. A small amount of synthetic aperture radar (SAR) data is processed by differential interferometry to establish a multi baseline interferogram atlas, extracts coherent targets based on the mean value of coherence coefficients and point target detection, establishes a multi-baseline interferometric phase model to iteratively process the interference phase of coherent targets from a time domain perspective, and uses neighboring points based on spatial search the target interference phase difference unwrapping method solves the multi-baseline interference phase model, realizes the phase unwrapping, uses the nonlinear deformation phase and the atmospheric delay phase separation method to improve the linear deformation accuracy of the coherent target, and realizes the deformation monitoring of the tower structure. The experimental results show that this method can accurately monitor the structural deformation of single-tube towers, three-tube towers and angle steel towers. The monitoring accuracy can reach the sub-millimeter level, and the effective analysis of the tower’s deformation state can be realized.
Keywords: radar wave phase interferometry;measurement technology;tower structure;deformation monitoring;interference pattern;phase difference unwrapping
2021, 47(9):34-40 收稿日期: 2020-10-29;收到修改稿日期: 2020-12-24
基金项目: 国网浙江省电力有限公司2020年科技项目（5211QZ1900J6）
作者简介: 叶青(1973-),男,浙江衢州市人,工程师,研究方向为输电线路运检技术、带电作业等
参考文献
[1] 武立平, 龚浩, 赵晓龙, 等. 基于DInSAR技术的阳泉矿区形变监测与分析[J]. 煤矿安全, 2018, 49(7): 193-197
[2] 闫浩, 隆军, 刘驰越, 等. 数字全息技术及散斑干涉技术在形变测量领域的发展及应用[J]. 红外与激光工程, 2019, 48(6): 154-166
[3] QUSEN C, WEIPING J, XIAOLIN M, et al. Vertical deformation monitoring of the suspension bridge tower using GNSS: a case study of the forth road bridge in the UK[J]. Remote Sensing, 2018, 10(3): 364
[4] KELIANG D, MINGLIANG L, ZICHAO S, et al. Deformation monitoring of Yingxian wooden tower based on ground-based interference radar[J]. Geotechnical Investigation & Surveying, 2019, 47(2): 50-54, 67
[5] 赵亚东, 黄勇, 雷天丰, 等. 基于RFID标签分频发射的铁塔形变监测设计[J]. 电测与仪表, 2018, 55(22): 106-109
[6] 陈凯, 孙希延, 纪元法, 等. 基于载波相位差分的形变监测高精度定位算法[J]. 计算机应用, 2019, 39(4): 1234-1239
[7] 李海涛, 周欢, 张晓林. 深空导航相位参考干涉测量技术研究[J]. 宇航学报, 2018, 39(2): 147-157
[8] 赵峰. 面向PSI技术的高质量SAR像元识别与干涉相位极化优化方法研究[J]. 地理与地理信息科学, 2020, 36(3): 147
[9] 王凯, 方昊然, 杨松林, 等. 基于零空间矩阵相位解缠的复杂山区高速公路沿线形变InSAR监测[J]. 地理与地理信息科学, 2020, 36(2): 32-37
[10] 任天鹏, 路伟涛, 陈略, 等. 高精度相位参考甚长基线干涉测量技术与试验验证[J]. 中国空间科学技术, 2018, 38(6): 71-76
[11] 唐琳琳, 侯永辉, 魏炜, 等. 基于精密光程差调制的时域干涉信号闭合相位检测方法研究[J]. 天文学报, 2019, 60(6): 70-81
[12] 赵佳曼, 柯长青, 陆燕燕, 等. 小基线集雷达干涉测量在无锡地面沉降监测中的应用[J]. 高技术通讯, 2018, 28(6): 36-47
[13] 李金超, 高飞, 鲁加国, 等. 联合多孔径雷达干涉与常规合成孔径雷达干涉提取三维形变场[J]. 大地测量与地球动力学, 2019, 39(8): 837-842
[14] 黄洁慧, 谢谟文, 王立伟. 基于SBAS-InSAR技术的白格滑坡形变监测研究[J]. 人民长江, 2019, 50(12): 101-105
