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采用航磁数据向下延拓到海面代替船测数据,可提高磁力测量成果的综合利用率。基于多尺度边缘检测理论,研究改善航磁数据向下延拓到海面精度的方法,提出多尺度边缘约束迭代法,并给出模型和实测数据算例。计算结果表明,当航磁数据中噪声水平较大时,利用多尺度边缘约束迭代法可以提高向下延拓的精度,满足三、四级海洋磁力测量的精度要求。

Aeromagnetic data downward continuation to sea level instead of marine magnetic survey data can improve use capability of survey data.Based on principle of multiscale edge detection,a new method to improve accuracy of aeromagnetic data downward continuation to sea level is studied,multiscale edge constraint iteration method is presented.By the calculation,it is shown that the new algorithm can improve accuracy of downward continuation,accord with accuracy specification of three or four level marine magnetic...