摘要
针对XCTD(投弃式温盐深)剖面仪数据传输速率低、可靠性差的缺点,提出基于曼彻斯特编码的基带传输技术。在系统结构设计的基础上,着重讨论了基于FPGA的曼彻斯特编码器、位定时提取电路和自动增益控制电路的设计。通过测试表明,编码后的系统不仅可以使用基带信号直接传输,而且能够满足系统的通信速率要求。
Aiming at low data transmission rate and reliability of the XCTD (Expendable Conductivity, Temperature and Depth) Profiler, baseband transmission technology based on Manchester code is proposed. Based on system structure design, the emphasis is to discuss the design of Manchester coder and bit synchronization extraction circuit and AGC circuit. The test result shows that the system after coding can make baseband signal transmit directly and meet the requirement of communication rate.
出处
《海洋技术》
北大核心
2010年第2期1-4,共4页
Ocean Technology
基金
国家高技术研究发展计划(863)资助项目(2006AA09Z131)