The recovery of non-uniform surface contamination density from measurements of instrumental spectra performed by the airborne survey method is examined. An algorithm based on Tikhonov’s method of regularization is proposed for solving the inverse problem. The results of testing the chosen algorithm on model problems of recovering the 137Cs contamination of a soil surface in the form of spots with different activity and size are presented. The influence of the regularization parameter on the recovery error is analyzed, and the optimal values of the regularization parameter are obtained.

中文翻译：

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从 Aerogamma 测量数据恢复土壤放射性核素污染的表面密度

检查了通过机载调查方法执行的仪器光谱测量中非均匀表面污染密度的恢复。提出了一种基于Tikhonov 正则化方法的算法来求解逆问题。介绍了在以不同活性和大小的斑点形式恢复土壤表面 137Cs 污染的模型问题上测试所选算法的结果。分析了正则化参数对恢复误差的影响，得到了正则化参数的最优值。