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分析了PPM激光通信系统的通信特性，提出使用纠错码技术改善激光水下PPM通信的性能．针对收端采用光电信增管作为探测器、每次通信时间短且通信量小的激光水下通信系统，分析比较了多种纠错码方案用于激光水下通信系统的情况，相对于未编码的PPM激光水下通信系统性能得以提高，即改善了通信的质量，或在保持同样通信质量的前提下，编码所获得的增益可转化而节省发射功率．分析结果表明，长RS码用于激光水下PPM通信系统效果好，软件实现RS纠错码方法简单，实验效果良好．
The communication characteristics of PPM laser communication system are analyzed, and the performance of laser underwater PPM communication using error correction code technology is proposed. Aiming at the laser underwater communication system with shortest communication time and small communication volume by using optical telecontrol as the detector at the receiving end, a variety of error correction code schemes are compared and analyzed for the laser underwater communication system, Encoded PPM laser underwater communication system to improve performance, that is, to improve the quality of communications, or to maintain the same quality of communication under the premise of encoding the gain can be converted to save the transmit power. The analysis results show that the long RS code is effective for laser underwater PPM communication system. The software has the advantages of simple RS error correction code and good experimental results.