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| 基于FPGA的逐次逼近算法实现激光干涉信号细分 | |
| 引用本文： | 黄晓清,高思田,缪琦,卢荣胜.基于FPGA的逐次逼近算法实现激光干涉信号细分[J].计量学报,2014,35(4):311-314. |
| 作者姓名： | 黄晓清 高思田 缪琦 卢荣胜 |
| 作者单位： | 1. 合肥工业大学仪器科学与光电工程学院,安徽 合肥 230009; 2. 中国计量科学研究院, 北京 100029 |
| 基金项目： | 国家自然科学基金(91023021) |
| 摘 要： | 为了实现激光干涉测量中信号的高速度、高精度细分,对正切细分算法中的除法运算进行了改进,采用逐次逼近算法替代使用较多的移位相减算法。实验证明逐次逼近算法比移位相减算法运算速度更快、资源占用较少。更适合FPGA信号细分高速度、高精度要求。 |
| 关 键 词： | 计量学 细分 激光干涉 逐次逼近 移位相减 FPGA |
Successive Approximation Division Algorithm in Laser Interference Signal Subdivision Based on FPGA |
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| HUANG Xiao-qing,GAO Si-tian,MIAO Qi,LU Rong-sheng.Successive Approximation Division Algorithm in Laser Interference Signal Subdivision Based on FPGA[J].Acta Metrologica Sinica,2014,35(4):311-314. | |
| Authors: | HUANG Xiao-qing GAO Si-tian MIAO Qi LU Rong-sheng |
| Affiliation: | 1.Hefei University of Technology, Hefei, Anhui 230009, China; 2.National Institute of Metrology, Beijing 100029, China |
| Abstract: | In order to achieve the goal of the laser interference measurement signal being in high speed and high precision subdivision, the division of tangent subdivision algorithm is improved. The successive approximation algorithm instead of using shift subtraction algorithm is used more in the past. Experiments prove that successive approximation algorithm is faster than shift subtractionm, resource usage is less, and successive approximation algorithm is more suitable for FPGA based on high speed and high precision requirements. |
| Keywords: | Metrology Subdivision Laser interference Successive approximation Shift subtraction FPGA |
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