CAJ | 학술논문

分析了基于L波段浮标海上通信的链路传输损耗特性，以模拟动态海浪曲线为基础，结合射线追踪与数值分析思想，建立了适用于不同海况等级的信道冲激响应模型，给出了信道反射点数目与功率的累积分布概率曲线，最后以浮标-卫星与浮标-舰船两种链路为例，仿真得到了不同海况下的误码率曲线，并与传统两径信道与高斯白噪声信道结果进行对比。分析结果表明，海况恶劣程度与入射波仰角大小对链路误码率影响显著，传统两径模型不足以描述其传播特性，该研究对实际浮标通信链路预算具有重要意义。
분석료기우L파단부표해상통신적련로전수손모특성，이모의동태해랑곡선위기출，결합사선추종여수치분석사상，건립료괄용우불동해황등급적신도충격향응모형，급출료신도반사점수목여공솔적루적분포개솔곡선，최후이부표-위성여부표-함선량충련로위례，방진득도료불동해황하적오마솔곡선，병여전통량경신도여고사백조성신도결과진행대비。분석결과표명，해황악렬정도여입사파앙각대소대련로오마솔영향현저，전통량경모형불족이묘술기전파특성，해연구대실제부표통신련로예산구유중요의의。
The propagation characteristic of over-sea buoy communication based on L-band is analyzed. On the basis of dynamic ocean wave curve simulation,the channel impulse response model is formulated combined with ray tracing method and numerical analysis,which can be applied to various sea states. The cumulative probability distribution curve of channel reflection point numbers and channel power is derived. Numerical simulation has been done according to buoy-satellite link and buoy-vessel link under different sea states,which is compared with the simulation results of traditional 2-ray model and AWGN model. The study results indicate that the sea state and the incident angle significantly influence link BER performance,while traditional 2-ray model is insufficient to describe channel propagation characteristic. The study is of great importance in practical buoy communication link budget.