铁路带状测区GPS高程转换方法的研究  

A Study on Transformation of GPS Geodetic Height for Railway Belt Area

作　　者：侯永会[1] 杨腾峰[1] 杜建刚[1] 

机构地区：[1]石家庄铁道学院土木工程分院,河北石家庄050043

出　　处：《石家庄铁道学院学报》2005年第3期76-78,83,共4页Journal of Shijiazhuang Railway Institute

摘　　要：研究利用GPS技术间接获取正常高,对铁路测量具有非常重要的实用意义。用BP人工神经网络,对京沪高速铁路某段实测GPS大地高程数据进行了转换计算,得到了比较高的转换精度,结果也是稳定的。经过与其它常用方法进行对比,表明利用人工神经网络进行带状测区GPS大地高到正常高的转换计算是可行的。The study of obtaining normal height by using GPS geodetic height indirectly is of important significance in railway survey. In this paper some GPS geodetic heights of Jing - Hu High - speed Railway are transformed to normal height by means of the BP Artificial Nerve Network, the result of which is both precise and steady. A comparing with other common methods indicates that it is practicable to transform GPS geodetic height to normal height with ANN in long belt area.

关 键 词：GPS大地高 正常高 人工神经网络 高程异常 

分 类 号：P228.4[天文地球—大地测量学与测量工程]