本文介绍了直接数字合成（DDS）技术在激光相位测距仪中的应用。
This paper introduces the application of direct digital synthesizers (DDS) technique in laser phase distance measurement.
使用该技术研制的数字激光相位测距仪具有操作简便、携带方便、性能可靠的特点，测相精度优于千分之一。
The apparatus of digital laser phase distance measurement by using the technique is reliable and easy to operate and carry. Especially the precision of phase is less than 1/1000 degree.
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