Abstract : the more detailed mathematial derivation and analysis of watson transformation in diffraction theory of ground wave is made by two different method . in derivation necessary and approximate conditions requred to make the transformation are specially discussed 文摘:采用两种不同的方法对地波绕射理论中的瓦特松变换问题做了较详细地数学推导，并着重讨论了做瓦特松变换的要求的必要条件与近似条件。
