A modified method for S-approximations of anomalous potential fields is described; its advantages are discussed. Software has been developed to calculate deflections of the vertical (DOV) and geoid heights using the proposed technique. The results of DOV calculations for two regions of the Atlantic Ocean are given.

中文翻译：

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使用S近似法确定垂直和大地水准面高度的偏差

描述了一种用于异常势场的S-近似的改进方法；讨论了它的优点。已经开发出了使用所提出的技术来计算垂直（DOV）和大地水准面高度偏差的软件。给出了大西洋两个地区的DOV计算结果。