基于DSP和CPLD的数字ADCP信号处理系统  

Signal Processing System of Digital ADCP Based on DSP and CPLD

作　　者：朱昊[1] 刘文耀[1] 梁燕[1] 梁捷[2] 郭海涛[2] 郝永杰[3] 

机构地区：[1]天津大学 精密仪器与光电子工程学院 [2]国家海洋技术中心,天津300111 [3]北京普天方正通信技术有限公司,北京100086

出　　处：《海洋技术》2004年第4期96-102,共7页Ocean Technology

基　　金：国家863海洋监测技术主题818资助项目(863-818-06-03)。

摘　　要：利用声学多普勒流速剖面仪(ADCP)测量流速是20世纪80年代初发展起来的一种流速流量测验新技术。文章介绍了一种以DSP和CPLD为核心的数字ADCP信号处理系统,阐述了系统工作原理、系统结构和软硬件设计。系统以TMS320C5410芯片作为系统控制和信号处理的核心,采用数字滤波和直接数字合成技术为接收和发射模块,提高系统的速度到10 ns运算级,极大的降低了输入输出信号的漂移,水体空间分辨率达到1 m。Doppler Current Profiler is arisen at beginning of 80s. The technique is used to far-measure the stereo velocity of ocean current with vector synthesis according to Doppler theory. The signal processing for ADCP based on DSP (Digital Signal Processing) and CPLD (Complex Programmable Logic Device) are introduced here. Also, the operating principle, system makeup, the software and hardware design are discussed. The control and processing core-TMS320C5410 chip greatly improves the speed as fast as 10ns. Moreover, the sending part-digital filter and the receiving part-DDS (Direct Digital Synthesis) make the output and input signal more exact. Besides, the water dimensional resolving ability is up to 1m.

关 键 词：信号处理系统 DSP CPLD 接收 TMS320C5410 芯片 输入输出 ADCP 流量测验 多普勒流速剖面仪 

分 类 号：P335[天文地球—水文科学] P332.4[水利工程—水文学及水资源]