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介绍球冠谐分析方法在重力场研究中的基本理论和计算方法。探讨了球冠谐系数与波长的关系，以及利用球冠谐分析方法提取不同波长的重力场异常，进而研究深部地壳结构的问题，最后给出一个实例。
The basic theory and calculation method of spherical crown harmonic analysis in gravitational field are introduced. The relationship between the spherical harmonic coefficient and the wavelength is discussed, and the problem of the deep crustal structure is studied by using the spherical-crown harmonic analysis to extract the gravitational field anomalies with different wavelengths. Finally, an example is given.