高分辨率SAR图像中特高压铁塔覆冰特性分析  

Characteristics of Icing UHV Transmission Tower in High-resolution SAR Images

作　　者：胡毅[1] 王力农[1] 刘凯[1] 胡建勋[1] 刘艳[1] 刘庭[1] 肖宾[1] 

机构地区：[1]国网电力科学研究院,武汉430074

出　　处：《高电压技术》2010年第7期1589-1593,共5页High Voltage Engineering

基　　金：国家电网公司科技项目(SGKJJSKF[2009]567)~~

摘　　要：利用高分辨率合成孔径雷达(SAR)卫星监测覆冰铁塔的安全状态对特高压线路的安全运行具有重要意义。为此进行了特高压铁塔模拟横担覆冰实验,利用环境气候实验室制作了覆冰厚度分别为10cm和4cm的实验横担。基于1m分辨率的SAR卫星影像研究了不同厚度覆冰与未覆冰情况下的铁塔横担雷达反射特征与参数变化,结果显示覆冰横担在雷达(VV)极化模式下后向散射特性未见明显削弱,可以利用高分辨率SAR卫星监测覆冰条件下特高压铁塔的安全状态。The icing experiment of UHV tower simulated cross arm was processed and the follow-up ice thickness of test cross arms were 10cm and 4cm respectively. Based on the 1m-resolution synthetic aperture radar （SAR） satellite images,we studied the radar scattering characteristics of tower cross-arms and the corresponding parameters change under the conditions of different ice thickness and no ice covered. Experimental results show that the radar signal reflected from iced tower is not weakened in the VV polarization mode,namely,that the tower safety situation can be monitored by high-resolution SAR satellite images in ice and snow disasters.

关 键 词：特高压 输电铁塔 横担 覆冰 合成孔径雷达 高分辨率 

分 类 号：TM753[电气工程—电力系统及自动化]