航空电磁响应数据的矩阵束法重构  

Reconstruction of Matrix Pencil Method on Aviation Electromagnetic Response Data

作　　者：尹大伟[1,2] 林君[1] 朱凯光[1] 

机构地区：[1]吉林大学仪器科学与电气工程学院,长春130021 [2]空军航空大学系统教研室,长春130022

出　　处：《数据采集与处理》2014年第5期777-782,共6页Journal of Data Acquisition and Processing

基　　金：国家自然科学基金(40974039)资助项目;国家高技术研究发展计划(“八六三”计划)(2006AA06205)资助项目

摘　　要：时间域航空电磁探测研究中得到的海量电磁响应数据呈现出"衰减指数和"的变化趋势。针对该变化特点,采用了矩阵束法从响应数据中提取极点等特征量,并完成了数据的降秩、重构处理。算法分析和实测结果表明:无噪声干扰时,该算法表现出了较好的重构精度;加噪后,在较大信噪比变化范围内,重构精度呈现了较小的波动,体现了该算法较高的抗噪性和稳定性。因此,该算法适合应用于航空电磁响应数据分析中。There is a changing trend of attenuation exponential summation in a great capacity of electromagnetic response data in the research of time-domain aviation electromagnetic exploration. According to the changing situation, characteristic parameters as poles are extracted from response data by matrix pencil method, and then the response data are dealt with reducing rank and reconstruction. Algorithm analysis and practical testing result prove that better reconstruction precision by matrix pencil method is presented in the condition of non-noise interfer- ence, and adding noise interference,a little fluctuaton of precision emerges with in a big varia- ble extent of signal-to-noise rate which reflect the abilits of resisting noise and stable performance. Therefore, the proposed matrix pencil method is applicable to the analysis of aviation electromagnetic response data.

关 键 词：航空电磁响应数据 衰减指数和 矩阵束法 重构 

分 类 号：P631.326[天文地球—地质矿产勘探]