【摘要】 本文设计了PPM-PTC(脉位调制-脉冲周期编码)信息水声编码方式并将其运用于海底管线保护电位水声遥测系统中;介绍了PPM-PTC编码器的编码实现方法和工作原理;根据水声信道特性和保护电位遥测仪的特殊要求,设计和确定了主要传输参数,使仪器实现对水下管线腐蚀与保护电位的实时,可靠的测量。更多还原

【Abstract】 In this paper, the PPM-PTC(Pulse Potential Modulation-Pulse Time Code) are designed to transmit the acoustic information of the cathodic protection potential of the subsea pipeline. The cording method and the principle of PPM-PTC coder are introduced. Its main parameters are selected according to the characteristics of the marine acoustic transmission and special requirment of the telemeter to measure the potential of corrosion and protection of the subsea pipe-line in situ and reliably.更多还原