小波变换在地面高精度磁测数据处理中的应用  

Application of the wavelet transform in the ground magnetic data processing

作　　者：龙建钢[1] 吴云鹏[2] 吴小平[1] 

机构地区：[1]中南大学地球科学与信息物理工程学院,长沙410083 [2]成都信息工程学院计算机学院,成都610225

出　　处：《矿产勘查》2014年第1期44-48,共5页Mineral Exploration

基　　金：国家自然科学基金(编号:41174103);博士点基金(编号:20070533075)共同资助

摘　　要：地面高精度磁法测量在弱磁性目标体及隐伏磁性体勘探中被广泛应用。这一方法由于观测灵敏度和精确度高,也夹杂大量干扰噪声信号,因而其数据处理和解释也很繁杂和困难。通过对叠加超大幅度高频噪声信号进行小波变换处理,并将处理结果与圆滑处理结果进行比较,得知合适的尺度系数的小波变换能够很好地压制、去除超高、超大幅度的高频噪声干扰。应用小波变换方法,对老挝某地的地面高精度磁法测量的实测数据进行处理,得到了与实际地质情况相吻合的结果资料。The ground high precision magnetic survey is widely used for prospecting of the weak magnetic object and hidden magnetic bodies. Due to the extreme observation sensitivity and high precisions of the ground magnetic survey method, the survey data- set commonly bears large amount of disturbing noises, thus it results in the difficulty during the data processing and data interpretation. The authors has applied the wavelet transform approach to deal with the high frequency disturbing noise, and compared the transformed result with the smoothed result, found that the wavelet transform at certain scale can suppressed and reduced the added noise signal. Applying the wavelet transform method to the original high precision magnetic survey conducted in the exploration project in Laos, the authors achieved similar interpretation results in accordance with the geological conditions.

关 键 词：小波 小波变换 高精度磁法测量 高频噪声 高斯函数 

分 类 号：P631.2[天文地球—地质矿产勘探]