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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。
In this paper, PPM-PTC (Pulse-Position Modulation-Pulse Periodic Code) information hydrophone coding is designed and applied to underwater acoustic telemetry system of submarine pipeline protection potential. The coding method and working principle of PPM-PTC encoder are introduced. According to the characteristics of underwater acoustic channel and the special requirements of telemeter, the main transmission parameters are designed and determined so that the instrument can realize the real-time and reliable measurement of the corrosion and protection potential of underwater pipeline.