Research on High Speed Vehicle Stable Communication Technology
When high speed vehicle is flying at high speed,there is high speed relative motion be-tween ground station and other aircraft's radial,so the receiving signal has great Doppler frequency deviation and Doppler change rate.Large dynamic Doppler brings great challenges to the stability of communication transmission,which leads to the correct demodulation of information and the failure of aircraft to perform tasks.Therefore,it is urgent to study the stable communication technology in high speed mobile environment.In this paper,the capability requirement of the new combat mode to the high-speed mobile communication system is analyzed,and the channel fading characteristics of the high-speed mobile communication are studied.On this basis,the anti-Doppler effect of pcm-fm modu-lation method is studied.Based on the information provided by the inertial navigation system,the Doppler estimation algorithm of the vehicle high-speed mobile communication is proposed.The simu-lation results show that the communication stability can be improved by this transmission technology.
high speed vehiclemobile communicationsDoppler frequency deviationmodulation
万方数据
维普
