广东电力2026，Vol.39Issue(3)：97-107,11.DOI:10.3969/j.issn.1007-290X.2026.03.010
基于SBAS-InSAR的高压输电线路形变监测
Deformation Monitoring of High-voltage Transmission Lines Based on SBAS-InSAR
摘要
Abstract
This paper proposes an improved SBAS-InSAR method to address the problems of sparse coherent points and difficulty in deformation monitoring for high-voltage transmission lines deployed in mountainous areas.Permanent scatterers(PS)and distributed scatterers(DS)are extracted using a weighted amplitude dispersion method and nonlocal weighted phase filtering,respectively,thereby enhancing point density in low-coherence regions.To further suppress the effect of atmospheric phase delay,the adjacent interferogram averaging method is applied.A case study with 25 Sentinel-1A images over three transmission lines in Zhaoqing,Guangdong province demonstrates the method's effectiveness.The results indicate that compared with the conventional amplitude dispersion approach,the proposed method shows the advantage in obtaining coherent point density and the density value is multiplied.During the monitoring period,deformation information of three transmission lines is obtained using the proposed method.The overall average deformation velocity is-13.99 mm/a,with a maximum deformation velocity reaching-35 mm/a,indicating an overall subsidence trend.Among them,one line exhibits relatively small deformation and remained stable,whereas the other two lines show significant subsidence,and the deformation of towers along these lines requires close attention.The results confirm that the proposed SBAS-InSAR approach provides a reliable tool for deformation monitoring of linear infrastructure and supports the safe operation and maintenance of transmission lines.关键词
SBAS-InSAR/输电线路/形变监测/加权振幅离差/非局部加权相位滤波/干涉图求平均Key words
SBAS-InSAR/transmission line/deformation monitoring/weighted amplitude disparity/nonlocal weighted phase filtering/interferogram averaging分类
信息技术与安全科学引用本文复制引用
蒋畅,王中奥,王磊..基于SBAS-InSAR的高压输电线路形变监测[J].广东电力,2026,39(3):97-107,11.基金项目
中国南方电网有限责任公司科技项目(GDKJXM20231426) （GDKJXM20231426）
