高分辨率SAR卫星监测特高压输电铁塔形变
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摘要
针对灾害条件下特高压输电线路及铁塔广域监测应用的现状和需求,研究了利用高分辨率合成孔径雷达(SAR)卫星监测特高压输电铁塔及其形变的技术。首先,分析SAR成像的特点,研究高分辨率SAR图像中特高压铁塔的目标特性和目标识别技术,利用峰值检测算法对武汉特高压交流试验基地中的特高压铁塔进行识别。然后进行了特高压铁塔形变实验。结果表明,利用SAR目标识别技术可以提取特高压输电铁塔的主要结构,利用高分辨率SAR图像监测特高压铁塔较大形变的方法具有可行性。
Under the conditions of present situation and requirements of wide area surveillance for UHV transmission line and tower in natural disaster weather,the technology of using high-resolution SAR satellite to detect UHV transmission line and tower deformation was discussed. Firstly,the fundamental characteristics of SAR image were analyzed. And the target characteristics and target recognition technology of UHV transmission tower in high-resolution SAR images were studied. The algorithm of peak characteristics detection was adopted to recognize the UHV tower targets in Wuhan UHV AC test base. Then,the test of UHV transmission tower deformation was processed. The experimental results show that using SAR target recognition technology can extract the main structure of UHV transmission tower,and the method of using high-resolution SAR images to identify the deformation of UHV transmission tower is feasible.
Under the conditions of present situation and requirements of wide area surveillance for UHV transmission line and tower in natural disaster weather,the technology of using high-resolution SAR satellite to detect UHV transmission line and tower deformation was discussed. Firstly,the fundamental characteristics of SAR image were analyzed. And the target characteristics and target recognition technology of UHV transmission tower in high-resolution SAR images were studied. The algorithm of peak characteristics detection was adopted to recognize the UHV tower targets in Wuhan UHV AC test base. Then,the test of UHV transmission tower deformation was processed. The experimental results show that using SAR target recognition technology can extract the main structure of UHV transmission tower,and the method of using high-resolution SAR images to identify the deformation of UHV transmission tower is feasible.
引文
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[2]伍洲,方彦军.高压巡线机器人电磁导航系统研究与设计[J].高电压技术,2008,34(9):1959-1963.WU Zhou,FANG Yan-jun.Research and design of electromag-netic navigation systemof power transmissionlineinspection ro-bot[J].High Voltage Engineering,2008,34(9):1959-1963.
[3]张柯,李海峰,王伟.浅议直升机作业在我国特高压电网中的应用[J].高电压技术,2006,32(6):45-46.ZHANG Ke,LI Hai-feng,WANG Wei.Analysis of helicopter patrol application prospect in China’s UHVgrid[J].High Volt-age Engineering,2006,32(6):45-46.
[4]张予.架空输电线路导线覆冰在线监测系统[J].高电压技术,2008,34(9):1992-1995.
[5]梁云亮,蒋咏梅.SAR图像变化检测技术在洪灾受淹区域确定中的应用[J].成都航空职业技术学院学报,2009,25(2):49-51.LI ANG Yun-liang,JI ANG Yong-mei.Application in determi-ning flooded areas with change detection techniques of SARi m-age[J].Journal of Chengdu Aeronautic Vocational and Techni-cal College,2009,25(2):49-51.
[6]李京,蒋卫国,王圆圆,等.空间技术在灾害与环境中的应用[J].中国工程科学,2008,10(6):33-40.LI Jing,JI ANG Wei-guo,WANG Yuan-yuan,et al.Applica-tion of spatial technologies in the field of resources and disasters[J].Engineering Sciences,2008,10(6):33-40.
[7]张诗玉,李陶,夏耶.基于InSAR技术的城市地面沉降灾害监测研究[J].武汉大学学报(信息科学版),2008,33(8):850-858.ZHAG Shi-yu,LI Tao,XI A Ye.Study on urban area subsid-ence monitoring based on I NSARtechnique[J].Geomatics and Information Science of Wuhan University,2008,33(8):850-858.
[8]徐宗宝,梁天刚,陈全功,等.RADARSAT数字图像积雪覆盖下地物解译方法[J].高原气象,2005,24(1):123-128.XU Zong-bao,LI ANG Tian-gang,CHEN Quan-gong,et al.Interpretation of snow-covered ground objects using RADAR-SATi mage[J].Plateau Meteorology,2005,24(1):123-128.
[9]金亚秋,王大芳.ALOS SAR图像2EM-MRF方法自动检测2008年5月中国汶川地震区域三类地表变化[J].自然科学进展,2009,19(4):412-420.
[10]邵芸,宫华泽,王世昂,等.多源雷达遥感数据汶川地震灾情应急监测与评价[J].遥感学报,2008,12(6):865-870.SHAO Yun,GONG Hua-ze,WANG Shi-ang,et al.Mulit-source SAR remote sensing data for rapid response to Wen-chuan earthquake damage assessment[J].Journal of Remote Sensing,2008,12(6):865-870.
[11]LI AOJing-juan,SHAO Yun,WANG Shi-xin.Monitoring for2003Huai River floodin China using multisource SARdata[C]∥Geoscience and Remote Sensing Symposium.Anchorage,USA:IEEE,2004,(4):2260-2263.
[12]朱俊杰.高分辨率光学和SAR遥感数据融合及典型目标提取方法研究[D].北京:中国科学院研究生院(遥感应用研究所),2005.
[13]YANG Wen,ZHANG Hai-jian,CHEN Jia-yu,et al.Auto-matic detection of power transmission seriesinfull polari metric SARi magery[C]∥2007IEEE Radar Conference.Boston,USA:IEEE,2007:789-793.
[14]贾承丽.SAR图像道路和机场提取方法研究[D].长沙:国防科学技术大学,2006.
[15]Novak L M,Dudgeon D E,Irving I,et al.Performance of a high-resolution polari metric SAR automatic target recognition system[J].The Lincoln Laboratory Journal,1993,6(1):11-24.
[16]计科峰,高贵,匡纲要.一种子像素精度SAR图像目标峰值提取方法[J].计算机仿真,2004,21(9):63-66.JI Ke-feng,GAO Gui,KUANG Gang-yao.A method of tar-gets peak extraction from SAR imagery in sub-pixel accuracy[J].Computer Simulation,2004,21(9):63-66.
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