基于北斗短报文通信的波浪谱数据传输方法

Wave Spectrum Data Transmission Method Based on Beidou Short Message Communication

【目的】针对波浪浮标用北斗短报文传输谱数据时通信长度受限的问题,提出一种波浪谱数据传输方法。【方法】基于随机波浪理论,分析风力等级、波浪等级变化时的频谱分布特点,获得频谱成分的频率聚集规律;借鉴国外频谱传输方法及其经验,基于北斗短报文通信,开展波浪谱数据传输方法设计,并优化传输方式。【结果与结论】利用北斗短报文将0.05~0.35 Hz范围内波浪频谱数据仅以61字节实施基本传输,同时配置扩展能力。通过传输过程仿真测试、波浪浮标海上试验,证明本研究方法能满足波浪谱数据传输需求,北斗短报文可为海浪观测数据的实时传输提供一种新技术手段。

【Objective】To solve the problem of limited communication length when wave buoy transmits spectrum data with Beidou short message,a wave spectrum data transmission method is proposed.【Method】Based on the random wave theory,the spectral distribution characteristics of wind power and wave state at different levels were analyzed,and the frequency convergence regularity of spectral components was obtained.Drawing on foreign spectrum transmission methods and experience,based on Beidou short message communication,the design of wave spectrum data transmission method is carried out so as to optimize the transmission scheme.【Results and Conclusions】The wave spectrum data within the frequency range of 0.05-0.35 Hz can be transmitted in only 61 bytes,and the expansion capability is further available when needed.Through the simulation test of the transmission process and the sea test of the wave buoy,it is proved that the method can meet the data transmission requirements of the wave spectrum,and the Beidou short message can provide efficacious approaches for the real time transmission of wave observation data.