高分辨率探地雷达复数道分析方法

常规的复数道分析方法,对高分辨率雷达勘探,特别是对薄层的研究,其精度不够。为此采取了改进措施,提出了适合于高分辨雷达剖面的复数道分析方法,并结合铁路沪宁线路基检测的实测数据,对比了常规瞬时相位和改进后瞬时相位的剖面,得出改进后的复数道分析方法较常规的精度更高,效果更好。

COMPLEX TRACE ESTIMATE METHOD FOR HIGH RESOLUTION GPR DATA

In order to acquire high resolution GPR exploration data, we should not only adopt suitable methods to get high resolution data in the open field but also process primitive data with essential methods. The precision of the traditional method for complex trace analysis cannot meet the requirement of the high resolution GPR exploration, especially that of the thin interbeds research. Therefore an improved method for complex trace analysis is proposed in this paper to suit the high resolution GPR data. The traditional instantaneous phase plot is compared with the improved instantaneous phase plot based on exploration data of Shanghai-Nanjing Railway subgrade, and the results demonstrate that the improved method of complex trace analysis is more precise and effective than the traditional one.