油管传输射孔信号的识别  

Identification of Tubing Conveyed Perforating Signal

作　　者：宋凯[1] 庞宏[1] 马平全[1] 

机构地区：[1]沈阳理工大学信息科学与工程学院,辽宁沈阳110159

出　　处：《沈阳理工大学学报》2013年第4期1-3,14,共4页Journal of Shenyang Ligong University

基　　金：国家自然科学基金资助(51075282);辽宁省科技厅基金项目(2011003002)

摘　　要：在研究经验模态分解(EMD)方法的基础上,提出一种基于EMD的油管传输射孔信号的处理方法。通过EMD方法将原始信号分解成少量的,频率逐渐降低的本征模态函数(IMF),采用第一阶高频IMF分量信号,与原始信号进行对比分析,定位信号畸变点,提取相位突变点,从而得到射孔枪首末位置信息,估算射孔弹爆破数目。现场实验表明该方法较好地实现了对TCP射孔信号主要特征的提取,同时显示了EMD方法在处理该类非平稳信号中的有效性。Propose a tubing conveyed perforating signal processing method on the basis of introducing empirical mode decomposition（EMD） method.Decompose the original signal into a small amount of intrinsic mode function with gradually decreased frequency by EMD method.Compare the first-order of high-frequency IMF component signal and the original signal to position the signal distortion point and extract phase mutations points.Get the guns first and last location information estimate the number of blasting perforated shells.Field experiments show that the method of extraction of the main features of TCP perforation signal is very good and the effectiveness of EMD method in the class of non-stationary signals.

关 键 词：经验模态分解 本征模态函数 非平稳信号 TCP射孔 

分 类 号：TN911.23[电子电信—通信与信息系统]