The positioning principle of double - wavelength interferometer, the problems met in designing and manufacturing of CPLD functional circuits and the solving methods are described in the paper.
阐述了双频干涉仪的定位原理，以及在应用CPLD设计、制作其功能电路时遇到的问题和解决方案。
2
The node is used as sampling flag and the beat-wave fringe fraction is measured with double frequency interferometer combined by optical components.
该装置以拍波合成的场强信号的节点为对准标志，以光路组合形成的双频激光干涉仪测量尾数部分。
3
A double-frequency laser interferometer was applied for the accuracy reliability experiments in order to put forward countermeasures of increasing the accuracy reliability of the transmission system.