长距离跨海高程基准传递方法的研究

基金项目: 国家杰出青年科学基金资助项目(49625408);海洋"863"青年基金资助项目(Q-03)

详细信息

Height Datum Transference within Long Distance across Sea

School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan, China, 430079

摘要: 研究了利用GPS定位技术所确定的相对大地高差,联合精确的大地水准面差距进行高程传递的方法。在洋山岛地区,利用该方法将黄海高程由陆地传递到距离上海芦潮港30km的洋山岛上。传递后的高程与两种独立的潮位观测结果比较差值分别为1cm和6cm,传递后的两段高程差与洋山岛三等水准测量结果的独立高差比较为0.2cm和0.7cm。
- GPS /
- 大地水准面 /
- 高程
Abstract: This paper focuses on the study of the height transference within long distance across sea,by combining ellipsoidal height of GPS with gravimetric geoidal height.Using this method,the Yellow Sea Height Datum is transferred to Yangshan Island which is 30 km faraway from Shanghai. As an external check,the transferred heights of stations by the method are compared with those determined from two independent sets of gauge records,and the differences are 1.0 cm and 6.0 cm respectively.Moreover,the transferred height difference of two sections between the stations on the island are also compared with the measured ones precise leveling,which shows that the differences are 0.2 cm and 0.7 cm respectively.
- GPS /
- geoid /
- elevation