小波变换在砂岩型铀矿地面氡气测量中的应用

Application of wavelet transform in Radon survey over the ground of sandstone-type uranium deposit

放射性统计涨落和随机干扰是影响放射性测量效果的关键因素之一,它对砂岩型铀矿在地表的放射性弱信息具有干扰甚至淹没的严重影响。本文采用小波多分辨分析氡气测量数据,消除统计涨落等噪声干扰,提取氡气测量反映深部砂岩型铀矿化信息,为应用地面氡气瞬时测量方法圈定砂岩型铀矿成矿有利地段提供了新的方法和新的思路。

Statistical fluctuation and random interference are the key factors to influence radiometric survey, they may seriously interference and even cover up the weak information from the underground sandstone-type deposit. In order to eliminate the statistical fluctuation and random interference, this paper uses the multi-scale wavelet decomposition to analyze radon survey data so that the abnormal respond to the deep uranium mineralization can be subtracted. It provides a new method and thought to identify the favorable district for the method of instantaneous radon survey on the ground.