Wireless Tracking Algorithm with Direct Signal in Strong Doppler Environment

With the development of wireless communication technology, orthogonal frequency division multiplexing (OFDM) technology faces challenges in high mobility and high frequency communication scenarios. To deal with this problem, orthogonal time frequency space (OTFS) modulation technology arises at the historic moment. It can perform signal processing in the delay-Doppler (DD) domain, convert time-varying channel into slow fading channels, and enhance the robustness of the system. In this study, a direct wireless signal in Doppler environment tracking (DWSD-Tra) method based on OTFS signal is adopted, which makes use of its stability against high speed in DD domain, reduce the intermediate steps and improve the positioning accuracy. The results show that the algorithm can reduce the tracking error in the strong Doppler environment, has excellent performance and strong robustness.