现代电子技术Issue(18)：118-120,3.
基于相位差分的FPGA瞬时测频的实现
Implementation of instantaneous frequency measurement based on phase difference by FPGA
李滨玉 1许洁静 1魏波1
作者信息
- 1. 陕西黄河集团有限公司,陕西 西安,710043
- 折叠
摘要
Abstract
In order to realize the high precision frequency measurement in high SNR condition,the phase difference algo-rithm was improved with multi-point average method in consideration of the noise irrelevance at different time. The simulation in Matlab shows that the algorithm has a stable frequency measurement performance under the condition of high noise,and low cal-culated quantity. The algorithm was implemented on the hardware by using the FPGA technology. Its structure is compact and simple. It has the characteristics of high real-time performance and function development,and also can be modularized. The ac-tual test indicates that the algorithm can obtain better effect of frequency measurement under the condition of high SNR,frequen-cy measurement error is small,and can satisfy the actual engineering requirements.关键词
相位差分/多点平均FPGA/硬件实现/MatlabKey words
phase difference/multi-point average/FPGA/hardware implementation/Matlab分类
信息技术与安全科学引用本文复制引用
李滨玉,许洁静,魏波..基于相位差分的FPGA瞬时测频的实现[J].现代电子技术,2013,(18):118-120,3.
