Filtering Ultrasonic Echo of Bottom Sediment in Drilling Hole by Parameters Constrained Gabor Filter

摘要：

Ultrasonic is a good means to measure the thickness of bottom sediment in drilling hole. The echo signal of the sediment is weak and with high noise usually. This paper adopts Gabor filter to process the ultrasonic echos. The constrainted relationships between Gabor filters parameters and frequency characteristics have been analyzed and presented. The time-domain standard deviation σ(t) and oscillation frequency f0 of the filter cure designed by these relationship and the features of ultrasonic transducer. Some echos including noise with different intensity have been filtered by the designed Gabor filter. The results show that Gabor filter is suitable for processing the ultrasonic echo and its effect of improving the sNR is much prominent especially when the included noise is very high.

关键词： constrained parameters Gabor Filter drilling hole bottom sediment ultrasonic.

作者: Di Fan Maoyong Cao Nongliang Sun Kaihua Liu

作者单位: Shandong University of Science and Technology,Qingdao,266510,China

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 3458-3461

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）