Research On Data Transmission Expansion Frequency Hopping Hybrid Technology Of Unmanned Aerial Vehicle

With the enhancement of anti-interference of Unmanned Helicopter’s wireless communi-cation, traditional single spread spectrum technique can not satisfie the high requirements. This paper maked a study of the hybrid DS-FH spread spectrum technique with Matlab/Simulink emulating.Based on the study of DSSS、FHSS and their corresponding synchronization methods, the mathematics model of the hybrid DS-FH system was derivationed, the simulation model was setup and the characteristic was tested under the AWGN channel.Secondly, an synthesis synchronization method used for the hybrid DS-FH system was proposed and emulated. Its feasibility and reliability were analyzed and validated.Finally, the communication channel under muti-path jamming、single-tone jamming、 multitone jamming and partial band jamming were emulated preliminarily, and the characteristic was tested also.