A Multiuser Communication Algorithm for UAV Bee Combat

Abstract

The combat of unmanned aerial vehicle (UAV) bee colony is the primary trend of information warfare in the future. Under the high-dynamic environment of air-to-air combat, severe Doppler shifts generated by relative movement of UVA reduce the communication reliability between vehicles. Therefore, a new division-time multiuser chirp modulation (DT-MCM) algorithm based on chirp signal is proposed in this paper aiming to the characteristic of existing communication technology sensitive to Doppler shifts. Utilizing the insensitivity advantage of chirp signal to Doppler shift, two chirp signals with different chirp rate can constitute one chirp signal. And, our proposed method differentiates users using the chirp rate of chirp signals to implement the UAV bee colony communication. Depending on the electromagnetic environment changes, the efficient and reliable information transmission can be realized by dynamically adjusting parameters such as time and bandwidth. Applied to UAV bee colony communication and according to MATLAB simulation results, the proposed algorithm proved the effectiveness to reduce the adverse impact to UAV internetwork communication caused by Doppler shifts.KeywordsUnmanned aerial vehicle (UAV)Doppler shiftChirp signal