摘要： 职称论文发表中传统的反演解释理论基于从数理模型出发研究，但受正常场值的选择，剖面方位及磁化方向多方面的影响。而对起伏地形下的磁异常，传统反演解释增加了更多的不确定性因素。笔者提出了基于三角形解释理论下的双聚焦解释方法，推导了起伏地形条件下簿板磁场计算公式与图示，研究了起伏地形条件下簿板异常精确反演的先决条件；讨论了反演问题中双聚焦的方法技术；介绍了典型算例及应用实例的找矿效果。双聚焦解释法对于模型异常给出精确解；对于实测异常给出最佳解。
关键词： 地球探测与信息技术；起伏地形；簿板磁异常；原点聚焦；步长聚焦；相似解释；渐进迭代；
CAI Jiaxiong1,， ZHAO Shuangqiu2,*
Abstract： The traditional theory of inversion interpretation is based on the study of mathematical model, The results affected by the value of the normal field, the azimuth of the profile and the direction of magnetization. For the inversion of magnetic anomalies under undulating terrain, the results will bring more uncertanity.The author presents the double focusing method based on the triangular interpretation theory, and deduces the calculate formula and graphics of magnetic fields of dyke, and researches prerequisite for accurate inversion under the condition of undulate topography; In this papers, author discuss methods and techniques of double focusing in the inversion, and illustrates application results of theoretical model and the actual project; For the anomaly of theoretical model, the exact value be solved by method of double focusing; For the actual anomaly, the optimum value be solved by method of double focusing
Keywords： Earth-exploration and Information Techniques; Undulate topography; Magnetic anomaly of dyke; Focusing to the origin; Focusing to the step; Similar interpretation; Asymptotic iteration
