天顶距(英文名:zenith angle)定义:在天体方位圈上,天体与天顶之间的角距离,称之为天顶距。计算:它由测站点铅垂线的天顶起算,由0°量到180°。某一天体的天顶距等于该天体的地平高度之余角(即90°-该天体的地平高度)。
... 天顶距 zenith angle 天顶距 zenith distance 验潮站零点 zero point of the tidal ...
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同样的方法,可得地震的月球天顶距地震频度分布。
By the same method we also obtain the distribution of the lunar zenith distance versus the occurring probability of earthquakes.
卯酉方向天顶距的星径曲率改正以及子午方向天顶距的星径曲率改正。
They are the curvature corrections for recording time at the determined zenith distances when a star passes the prime vertical and the meridian circle.
星光跟踪仪提供天顶距的测量数据,红外高度测量仪提供航天器的高度数据。
The measurements of the spacecraft star navigation system are provided by star tracker and infrared accelerometer.
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