【摘要】 在大比例尺重力勘探工作中,当布格重力异常设计总精度提高到0.025×10-5 m/s2时,要求测点高程均方误差为0.05 m。为使GPS高程能够达到该精度要求,提出利用EGM2008模型和GPS水准数据拟合局部似大地水准面的方法以实现测点GPS高程的转换,并利用某地区GPS水准资料,对转换方法的可行性进行验证分析。结果表明,这种方法完全适用于大比例尺重力勘探工作。更多还原

【Abstract】 In large scale gravity prospecting,when total accuracy of Bouguer gravity anomaly is increased to 0.025×10-5m/s2,the height mean square error of the measuring point must be 0.050 m.Using EGM2008 model and GPS leveling data to fit local quasi-geodic surface,the authors transformed the altitude of the measuring point GPS,thus reaching the accuracy.By using GPS leveling data of a certain area,the authors studied the feasibility of the transforming method.The result shows that the method is completely applicable to large scale gravity prospecting.更多还原