|
|||||
|
|
| 变采样率技术在电磁波流速测量中的应用研究 | |
| 引用本文： | 杨强,刘纪元,焦学峰,么启. 变采样率技术在电磁波流速测量中的应用研究[J]. 电子设计工程, 2011, 19(19): 107-111 |
| 作者姓名： | 杨强 刘纪元 焦学峰 么启 |
| 作者单位： | 1. 沈阳航空航天大学电子信息工程学院,辽宁沈阳,110136 2. 中国科学院声学研究所综合声纳实验室,北京,100080 3. 北京航瑞博泰科技有限公司,北京,100102 |
| 摘 要： | 介绍了基于电磁波的水流速度测量的基本原理一多普勒效应，分析了不同采样频率对多普勒频率分辨率、测量精度、最大可测速度以及系统实时性的影响，指出单一采样频率无法满足测量系统对测量精度、量程和嵌入式系统实时性的要求，从而提出将变采样率技术应用在测量系统中。在理论研究和仿真分析完整数倍抽取、整数倍内插和有理数倍变采样率算法之后... |
| 关 键 词： | 电磁波 流速测量 多普勒效应 抽取 内插 变采样率技术 |
Research of changing sample ratio processing technology in velocity measurement of electromagnetic wave |
|
| YANG Qiang,LIU Ji-yuan,JIAO Xue-feng,YAO Qi. Research of changing sample ratio processing technology in velocity measurement of electromagnetic wave[J]. Electronic Design Engineering, 2011, 19(19): 107-111 | |
| Authors: | YANG Qiang LIU Ji-yuan JIAO Xue-feng YAO Qi |
| Affiliation: | 1(1.Electronics and Information Engineering,Shenyang Aerospace University,Shenyang 110136,China; 2.Institute of Acoustics,Chinese Academy of Science,Beijing 100080,China; 3.Beijing Hang Rui Bo Tai Science&Technology Co.,Ltd,Beijing 100102,China) |
| Abstract: | This paper described the electromagnetic wave measurement method in measuring water velocity based on Doppler effect at first. Due to the impacts of different sample ratios on Doppler frequency resolution, measurement accuracy, the maximum measurable velocity and real-time system, it＇s believed that signal sample ratio can not meet the system requirements. So the usage of changing sample ratio measurement technology came to necessary. Through theoretical studies and simulation analysis on complete multiple extraction, complete multiple interpolation and rational multiples of changing sample ratio technology, we concluded that changing sample ratio measurement technology could well meet the requirement of system, we also verified its reliability and efficiency by experiment tests. |
| Keywords: | electromagnetic wave water velocity measurement Doppler effect extraction interpolation changing sample ratio |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |