Adaptive Filter and Ground Penetrating Radar for River Cross-Section

• Main Authors: Chun-Wei Chang, 張峻瑋
• Other Authors: Yen-Chang Chen
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/g32qtj

碩士 === 國立臺北科技大學 === 土木與防災研究所 === 99 === The river cross-section is water management and quality one of the analytical important parameters. Traditional river cross section measurement needed to expend a great deal of manpower and time , the accuracy wasn''t high and not continuous. GPR used in a large number of engineering and geological exploration on Earth, In water table depth, fault location mining, embankments and other test items in the hollowed out very fruitful results. The study area is Beishih basin Du nan bridge.The study establishes the ground-penetrating radar measurement and data analysis process. Use of adaptive noise cancellation analysis electromagnetic wave, effective when the GPR test facilities and generate sustained horizontal of signal noise and interference filter, establishes a adaptive filter parameter. Adaptive algorithm which uses Least-Mean-Square (LMS) and Recursive Least- Square (RLS); Characteristics of the GPR electromagnetic wave to establish sub-release mechanism, use Empirical Mode Decomposition (EMD) to improve the situation seabed information up and down oscillation, Available continuously river cross-section. Compare the differences of river cross section area with the traditional method, the river cross section area differences about 15% that’s a compare result. It’s proved using ground-penetrating radar can application for river cross section measurement.