全球大地水准面模型OSU91A及其应用

Global Geoid Model and Application

全球大地水准面模型ＯＳＵ９１Ａ是ＧＰＳｕｒｖｅｙ软件中的大地水准面模块（ＧｅｏｉｄＭｏｄｕｌｅ）提供的用于世界各地计算大地水准面差距的地球重力场模型，该模型在ＧＰＳｕｒｅｙ软件中主要用于将ＧＰＳ大地高转换为正高（或正常高）和将ＧＰＳ大地高差转换为正高差（或正常高高差），所以。

Global geoid model OSU91A is a Geoid Module in GPSurvey software to calculate earth gravity model and geodial undulation. The model is used mainly to transform ellipsoidal height into orthometric height or normal height. So the model OSU91A has important applica tion on surveying orthometric height or normal height of GPS points.