点式声学多普勒海流计研究设计  

Study and Design of Bullet Point Acoustic Doppler Current Meter

作　　者：范寒柏[1] 李瑞琪[1] 赵文成[1] 陈绍权 

机构地区：[1]华北电力大学电子与通信工程系,河北保定071000 [2]广西梧州供电公司,广西梧州543000

出　　处：《仪表技术与传感器》2015年第11期38-41,共4页Instrument Technique and Sensor

摘　　要：针对高精度测量海水流速问题,研究并设计了点式多普勒海流计,基于STM32F407和AVR微处理器进行硬件开发和软件设计,给出了硬件电路设计及软件流程图,对基于编码驱动的自相关算法进行了分析,对不同算法进行测试,测试结果表明基于编码驱动的自相关算法与传统的FFT相比分辨率更高。To solve the problem of measuring seawater flow velocity in high precision , this paper researched and designed the bullet point acoustic doppler current meter , developed hardware and designed software based on STM 32F407 and AVR micropro-cessor , showed the hardware circuit and software flowchart , analyzed the autocorrelation algorithm based on coding drive , and made tests for different algorithms .The test results show that the autocorrelation algorithm based on the code driven has higher reso -lution than traditional FFT algorithm .

关 键 词：多普勒 频率响应 低噪声放大 频谱估计 自相关算法 

分 类 号：TP342[自动化与计算机技术—计算机系统结构]