Secure Data Link of Unmanned Aerial Vehicle Based on Chaotic Sub-carrier Modulation

Abstract

With the rapid development of electronics and communication technology,UAV (unmanned aerial vehicle) supported by these technologies have attracted the extensive attention of academia and industry.In order to adapt to the increasingly complex tasks and application fields,the UAV secure data link has become an important factor to promote the development of UAV.Focusing on the security issues of UAV data link,this paper discusses a series of advantages of OFDM (orthogonal frequency division multiplexing) technology,such as high spectrum utilization and anti-multipath-fading ability,and explains its application in UAV data link.Combining the long-term unpredictable characteristics of chaotic systems,a CSCM (chaotic sub-carrier modulation) scheme is proposed,which completes the chaotic serial-to-parallel conversion and chaotic disturbance on the data by using the quantized grouped chaotic sequence.This scheme realized the encrypted transmission of UAV data and the judgment on the reliability of the data source.Finally,MATLAB is used to simulate the scheme to verify the feasibility and effectiveness of the proposed scheme.

Keywords

• uav secure data link|orthogonal frequency division multiplexing (ofdm)|chaotic sub-carrier modulation (cscm)|chaotic serial-to-parallel conversion|chaotic disturbance