因此提高光电经纬仪跟踪快速运动目标的能力，一直是光电跟踪伺服系统努力的方向。
So improving the tracking ability of a theodolite for the fast moving target is the orientation of the photoelectrical tracking and servo system all along.
本文提出了经纬仪在测量数据中所存在的系统误差，从而指出了采用方向中误差指标的不确切性。
The systematic errors which exists in the measured data are revealed in this paper, and the non-accuracy of the medium error index dealing with directions are pointed out.
本文提出了经纬仪在测量数据中所存在的系统误差，从而指出了采用方向中误差指标的不确切性。
The systematic errors which exists in the measured data are revealed in this paper, and the non-accuracy of the medium error index dealing with directions are pointed out.
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