垂直基准线 [测] vertical reference line
相邻不同大地垂直基准 Different vertical datum in different neighboring nations
垂直大地基准 vertical geodetic datum
垂直角的基准线 vertical reference
这些关键问题主要有姿态改正、GPS高程质量控制、垂直基准转换、基于信号的在航潮位提取。
Some key techniques, such as attitude correction, quality control of GPS height, transformation of vertical reference datum and extraction of tidal level, are studied in detail.
垂直陀螺利用一个陀螺仪作为积分装置以得摇摆不定的重力基准线的平均位置。
The gyro vertical utilizes a gyroscope as an integrating device to obtain the average position of a pendulous gravity reference .
用于添加多达4个垂直坐标尺寸。将一个端点连接到基准线，一个端点连接到第一个部件。
Use to add up to 4 vertical ordinate dimensions. Attach one endpoint to baseline and one to first feature.
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