中国电子科技2007，Vol.5Issue(2)：167-171,5.
Railway Track Verification Using a Forward-Looking SAR GPR
Railway Track Verification Using a Forward-Looking SAR GPR
摘要
Abstract
It is a challenge to evaluate the conditions of railway track without interruption of regular traffic. In this paper, the authors introduce the detection of cavities under the railway substructure by using forward-looking ground penetrating radar (FLGPR). Main advantages of FLGPR are that such a system can illuminate a large area and can stand off a long distance over its down-looking counterpart. Two methods, frequency wave-number (F-W) synthetic aperture imaging (SAI) and beam-forming by delay and sum (DAS), are applied to process the collected data. Analysis and measuring show that the distinct radar image of the cavity beneath the substructure 1.2 m deep can be formed by these two methods.关键词
Forward-looking ground penetrating radar/radar imaging/railway track inspection/synthetic aperture imagingKey words
Forward-looking ground penetrating radar/radar imaging/railway track inspection/synthetic aperture imaging引用本文复制引用
Tai-Yin Zhao,Zheng-Ou Zhou..Railway Track Verification Using a Forward-Looking SAR GPR[J].中国电子科技,2007,5(2):167-171,5.基金项目
This work was supported by the National Nature Science Foundation of China under Grant No. 60472014. （）
