航放全谱数据处理及应用效果

Airborne Full-spectrum Data Processing and Application Effects

为了提高航放数据的利用效果,进行了全谱数据处理研究,建立了一套全谱数据处理流程及全谱数据处理参数刻度方法。动态带不同高度飞行数据处理结果表明,全谱高度修正误差小于标准三窗法高度修正误差;定点测量数据处理结果表明,全谱反算铀核素含量误差小于标准三窗法反算铀核素含量误差;测区实测数据处理结果表明:总体特征二者一致,在与地质体吻合方面优于三窗法;在同一地质单元的统计中,全谱法统计涨落与三窗法相比小很多。全谱法处理结果在数值上比较合理,全谱法反算铀核素含量与地面统计的放射性参数比较吻合;实测测区数据处理结果还表明,在已知矿床上方全谱法处理成果异常反应更为明显。因此,全谱法处理结果优于三窗法。

In order to improve the use of airborne data,a full-spectrum data processing study was carried out,and a set of full-spectrum data processing procedures and a full-spectrum data processing parameter calibration method were established.The processing results of flight data with different altitudes in the dynamic zone showed that the spectrum height correction error is smaller than that of the standard three-window method.The processing results of fixed-point measurement data show that the error of the full-spectrum back-calculated uranium nuclide content is less than that of the standard three-window method.The processing results of the measured data in the area showed that the overall characteristics of the processing results of the full spectrum method were consistent with that of the three-window method,and were superior to the three-window method in terms of consistency with the geological body.In the statistics of the same geological unit,the statistical fluctuation of the full-spectrum method was much smaller compared with that of the three-window method.The processing results of the full spectrum method are numerically reasonable.The inverse calculation of the uranium nuclide content by the full spectrum method was consistent with the radioactive parameters of the ground statistics.The result of processing the measured area data by the full spectrum method also showed that the full spectrum method was used on a known deposit,of which the abnormal results are more obvious.Therefore,the processing result of the full spectrum method is better than that of the three-window method.