摘要
针对用拟合局部似大地水准面实现GPS高程转换的方法在山区大比例尺重力勘查领域难以推广应用的情况,提出GPS高程转换的一种改进算法,即利用基于重力似大地水准面推导的高程异常差公式将GPS测定的大地高差转换为正常高差,进而实现GPS高程的有效转换。通过算例分析表明,这种方法完全适用于大比例尺重力勘探工作。
In view of the difficulties in large-scale application of fitting local quasi-geoid surface to GPS height transformation in mountain areas,this paper puts forward an improved algorithm for GPS height transformation.The elevation abnormal difference equation based on gravity quasi-geoid geodetic height is transformed to normal height to realize GPS height transformation.Case studies demonstrate that the method is suitable for large-scale gravity exploration.
出处
《物探与化探》
CAS
CSCD
2013年第2期350-352,共3页
Geophysical and Geochemical Exploration
关键词
GPS
高程转换
高程异常差
大地高差
GPS
height transformation
height anomaly difference
geodetic height
