Portal de Periódicos da CAPES

Retracted: Analysis of Transmission Line’s Scattering Characteristics in High Resolution Radar Satelite Image

2013; Springer Science+Business Media; Linguagem: Inglês

10.1007/978-3-642-45025-9_40

1865-0937

Jingbo Wang, Qi Chen, Shuaishuai Deng,

Advanced SAR Imaging Techniques

Since the reform and opening up policy,the development of China’s economy has been accelerating. People’s demand as well as the size of the national grid is growing and expanding.Our nation makes vigorous effort in building UHV, EHV transmission lines to meet the demand. 1000kV southeastern Shanxi - Nanyang - Jingmen UHV AC pilot demonstration project was put into operation in 2009, which brings significance to the adjustment of the layout construction and optimal allocation of China’s recourses. However, in recent years, the occurrence of extreme weather and geological disasters leads to great damage to people, which is increasing and becoming more and more fierce. At the beginning of 2008, snow disaster occurred in large scale of central and southern part of China, as well as Wenchuan earthquake in May 2008, the 2010 earthquake in Yushu in Qinghai Province, Ya’an, Sichuan earthquake in 2013, during which time the overturning of the transmission line tower caused abnormal run of the grid of those affected areas for a long time, which caused huge losses of national economy and people’s lives. Synthetic Aperture Radar (SAR) can handle remote sensing observations through microwave, with features of all-day, round-the-clock work, high resolution, strong penetration and rich characteristic signal, etc. The region has its unique advantages in a wide range of natural disasters. Real-time and on-time feature drawings provided can be reduce the losses caused by disasters when used in emergency command and rescue work. In this paper, research on 3m resolution TerraSAR images UHV transmission line scattering characteristics focuses on the discipline of bright spots offset by scattered wires. The study shows that the high-resolution SAR images, transmission towers and power lines can be used as a basis for target recognition for it’s high scattering intensity. In 3m image resolution, when the angle between the direction of flight is greater than 0°, the overall transmission line bright spot shift tower to the south; when less than 0°, the overall to the north. By processing the data, we found that the change of the angle formed by bright spots—caused by scattered power lines is facing an offset, while the overall offset is affected by other factors, which needs further research and analysis.