水下无人系统学报2024，Vol.32Issue(4)：637-643,7.DOI:10.11993/j.issn.2096-3920.2024-0019
基于PWM调制的激光致声空-水跨介质通信方法
Laser-Induced Acoustic Air-Water Trans-Medium Communication Based on PWM
摘要
Abstract
Laser-induced acoustic communication has emerged as a critical technology for facilitating air-water trans-medium nodeless communication,garnering increasing attention in research and application.At higher repetition frequencies,traditional modulation and demodulation techniques based on single-pulse recognition face challenges due to exacerbated interference among pulses,significantly disrupting code element determination and leading to high error rates that impede effective communication.To address this issue,a novel laser-induced acoustic communication method employing pulse width modulation(PWM)was proposed.Experiments utilized an Nd:YAG pulsed laser with a maximum repetition frequency of 500 Hz,and the number of laser pulses was adjusted to generate PWM signals of varying widths,with code element recognition achieved at the receiving end based on pulse width.The experiment results show that the PWM-based communication method effectively minimizes decoding errors due to inter-pulse interference,achieving commendable performance at the highest repetition frequency of 400 Hz with an error rate of just 8%.This improvement significantly enhances the reliability and effectiveness of laser-induced acoustic communication at high repetition frequencies.关键词
跨介质通信/激光致声/无节点/脉宽调制Key words
trans-medium communication/laser-induced acoustics/nodeless/PWM modulation分类
军事科技引用本文复制引用
陈英楠,赵扬,周志权,曹逸飞,张发祥..基于PWM调制的激光致声空-水跨介质通信方法[J].水下无人系统学报,2024,32(4):637-643,7.基金项目
哈尔滨工业大学校内培养重大项目资助(2022FRFK01011) （2022FRFK01011）
山东省重大科技创新工程(2022ZLGX04) （2022ZLGX04）
山东省自然科学基金面上项目(ZR2021MF126). （ZR2021MF126）
