Developing a new red band- SEVI-blue band (RSB) enhancement method for recognition the extra-high-voltage transmission line corridor in green mountains  

作　　者：Hong Jiang Yong Zhang Jinglan Lin Xiaogan Zheng Hui Yue Yunzhi Chen 

机构地区：[1]Key Laboratory of Spatial Data Mining&Information Sharing of Ministry of Education,National&Local Joint Engineering Research Center of Satellite Geospatial Information Technology,Academy of Digital China(Fujian),Fuzhou University,Fuzhou,People’s Republic of China [2]Fujian Soil and Water Conservation Experimental Station,Fuzhou,People’s Republic of China [3]Lab of Live Working Tech for Power Transmission,Fuzhou Power Supply Company of State Grid Fujian Electric Power Co.,Ltd.,Fuzhou,People’s Republic of China [4]Fujian(Changting)Soil and Water Conservation Research Center,Soil and Water Conservation Center of Changting County,Longyan,People’s Republic of China

出　　处：《International Journal of Digital Earth》2023年第1期806-824,共19页国际数字地球学报（英文）

基　　金：supported by the Science and Technology Plan Leading Project of Fujian Province,China[grant num-ber 2021Y0005];Water Conservancy Science and Technology Project of Fujian Province,China[grant number MSK202301].

摘　　要：Monitoring the extra-high-voltage transmission line corridor(EHVTLC)in mountains is critical for safe smart-grid operation.However,the transmission lines are so narrow that they are difficult to recognize using multispectral satellite images with a spatial resolution of 10 m.In this study,we developed a new method using the red band–shadow-eliminated vegetation index(SEVI)–blue band(RSB)composite image to enhance the EHVTLC in green mountains(named RSB-enhancement method).Using this method,the EHVTLC becomes evident in the false-color synthesis of the RSB composite of the Sentinel-2 image.Then,we recognized and extracted approximately 342.45 km of the EHVTLC in a mountainous region of Fuzhou City,China,including a 46.73 km three-parallel-lane segment of 1000 kV and a 295.72 km two-parallel-lane segment of 500 kV.Spatial analysis shows that the SEVI mean difference between the EHVTLC and the buffer zone reaches approximately 10%,and three landslides and 2.66 km^(2) soil erosion reside in the buffer zone which area is approximately 73.67 km^(2).Finally,the RSB-enhancement method can be used in other satellite images with spatial resolutions of greater than 10 m for enhancement and recognition the transmission line corridors in green mountains.

关 键 词：Enhancement method shadow-eliminated vegetation index(SEVI) transmission line lane(TLL) green mountains soil erosion 

分 类 号：TQ422[化学工程]