超长距离高精度跨海高程传递的应用实践  

Application on extra-long distance and high precision cross-sea elevation transfer

作　　者：麦建开 陈国恒 周建营[1] 周波阳 MAI Jiankai;CHEN Guoheng;ZHOU Jianying;ZHOU Boyang(Institute of Land Resource Surveying and Mapping of Guangdong Province,Guangzhou 510500,China;School of Navigation,Guangzhou Maritime University,Guangzhou 510725,China)

机构地区：[1]广东省国土资源测绘院,广州510500 [2]广州航海学院航务工程学院,广州510725

出　　处：《测绘科学》2021年第6期59-64,共6页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41504013);广东省自然资源科技计划项目(GDZRKJ2020006)。

摘　　要：海岛开发,测绘先行。为了将高程基准由大陆传递至上川岛和下川岛,该文联合改进的三角高程法、GNSS静态测量、二等水准测量进行了跨海高程传递,测量路线形成了9个闭合环,并将跨海网纳入江门市二等水准网中进行整体平差。结果表明,采用上述组合测量方法,该次长距离跨海高程传递的环闭合差、每千米水准测量偶然中误差、每千米水准测量偶然中误差都远小于二等水准测量对限差的要求。该次跨海高程传递对上川岛和下川岛的合理开发利用和有效保护具有重要意义。Surveying and mapping is the first step of island developing. In order to transfer the elevation reference from the mainland to Shang-chuan Island and Xia-chuan Island, the improved trigonometric leveling, global navigation satellite system(GNSS) static survey, and second-order leveling were combined, and the survey route formed nine closed loops, which was included in the overall adjustment of leveling network of Jiangmen city. The results showed that with the above-mentioned combined method, the loop closure, accidental mean square error per kilometer and total mean square error per kilometer of this long-distance cross-sea elevation transfer met the requirements of second-order leveling. This cross-sea elevation transfer is of great significance to the rational development and effective protection of Shangchuan island and Xiachuan island.

关 键 词：精密三角高程测量 长距离跨海高程传递 二等水准测量 大气折光 

分 类 号：P224[天文地球—大地测量学与测量工程]