摘要
简要介绍了高程系统的概念,分析了GPS水准拟合的基本数学模型,探讨了已知水准点极少时GPS水准拟合的精度控制问题,得出的一些结论可供海道测量工作者在海岸高程控制测量中参考。
The conception about height systems is introduced briefly.The basic math model about GPS levelling is analyzed.When the number of known points is small the precision control of GPS levelling is discussed.At last several viewpoints which may be consulted by hydrographic surveyor in coastal surveying are presented.
出处
《海洋测绘》
2011年第3期1-3,19,共4页
Hydrographic Surveying and Charting
关键词
大地测量
水准测量
GPS测量
高程系统
测量精度
geodetic surveying
levelling
GPS（global positioning system）surveying
height system
surveying precision
