光电子技术, 2012, 32 (1): 11, 网络出版: 2012-07-02
基于FPGA的单频激光干涉仪高速相位检测器设计与实现
Design and Implementation of FPGA-based High-speed Phase Detector in Single-frequency Laser Interferometer
摘要
设计并实现了一种对正交信号进行高速相位检测的FPGA电路，并将其成功应用于 自制单频激光干涉测长系统中。该电路主要采用CORDIC算法并使用流水线结构，同时为了矫正 实际测量时正交信号存在的畸变，增加了信号修正处理部分。仿真和实验结果表明该电路稳定可 靠，满足高速、高精度相位检测的需求。
Abstract
A high-speed quadrature-signal phase detection circuit is designed for single-frequency laser interferometer system. A pipelined CORDICalgorithm is adopted in the implementation. The section of signal correction circuit is added to correct the quadrature-signal distortion in the actual interferometer system. Simulation and experiment results show that the designed circuit is very stable and reliable in high-speed and high-precision phase detection.
闫冠屹, 谌雅琴, 孙利群, 章恩耀. 基于FPGA的单频激光干涉仪高速相位检测器设计与实现[J]. 光电子技术, 2012, 32(1): 11. Yan Guanyi, Chen Yaqin, Sun Liqun, Zhang Enyao. Design and Implementation of FPGA-based High-speed Phase Detector in Single-frequency Laser Interferometer[J]. Optoelectronic Technology, 2012, 32(1): 11.
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