岸船通信的抗干扰和保持通信时间预测研究

岸船通信面临着介质对高频电磁波( HF: High Frequency Electromagnetic Wave) 的吸收损耗、海面湍流对电磁波的散射、海面物体对电磁波的反射产生的多径信号干扰的问题。针对岸船通信通信传输信道的特点，建立其信道传输模型，求解出信道的单位冲激响应，提出了在岸船通信中接收机基于双调角器抗多径干扰的方法。该方法能有效地利用多径信号的能量，不需提高发射机功率即能提高通信质量，抗多径效果好且容易实现。建立高频电磁波电离层反射模型，使用解三角形算法研究了岸船通信能保持通信的时间，便于完善通信协议，提高通信质量。仿真结果表明，该方法白天最长能保持4． 5 h 通信，夜晚最长能保持7． 5 h 通信。

Ｒesearch on Anti-Interference of Shore Ship Communication and Ship Communication Time Forecast#br#

Coastal ship communication faces the difficulty of medium absorption of high-frequency electromagnetic waves( HF) ，scattering of electromagnetic waves by sea surface turbulence，and multipath signal interference caused by reflection of electromagnetic waves by sea objects． According to the characteristics of the shore-ship communication communication channel，the channel transmission model is established，and the unit impulse response of the channel is solved． The method of the receiver based on double-angler anti-multipath interference in the ship-to-ship communication is proposed． By utilizing the energy of the multipath signal，the communication quality can be improved without increasing the transmitter power，and the anti-multipath effect is good and easy to implement． The high-frequency electromagnetic wave ionospheric reflection model is established． The solution triangle communication algorithm is used to study the time that shore-to-ship communication can maintain communication，which is convenient for improving communication protocol and improving communication quality． The simulation results show that the longest day can maintain 4． 5 h of communication，and the longest can maintain 7． 5 h of communication at night．