摘要
为满足油田智能化开采应用中数据长期监测的需求,对井下数据的声波耦合提取进行研究;分析声波传输过程中可能出现的信号畸变问题,针对信号幅度的不规则起伏采取三值包络分层解调方法,设计基于采样点分组与相关检测的位同步提取算法,开发相应的同步解调软件。结果表明,该算法复杂度低,易于实现,适用于传输速率不高于2kbit/s的数传系统。
To meet the demand of long-time data monitoring in intelligent exploitation of oil field, the downholeacoustic communication was studied. The research was mainly about the signal distortion during acoustic transmis-sion. For the irregular fluctuation of signal amplitude, the solution included three-envelope-layering and bit synchro-nization extraction algorithm based on sample points grouping and correlation detection. Lastly, the corresponding de-modulation software was developed. The result of experiment showed that the algorithm had advantage of low com-plexity, easy implementation and was suitable for data transmission system whose rate was not higher than 2 kbit/s.
出处
《河南科技》
2017年第9期26-29,共4页
Henan Science and Technology
关键词
声波通信
包络分层
位同步
acoustic communication
envelope-layering
bit synchronization
