A Study of DS/FH Hybrid Spread Spectrum Signal Synchronization Technique under High Dynamics

Addressing the challenge of significant Doppler shifts and Doppler variability caused by high dynamics, single-regime spread-spectrum communications exhibit insufficient interference immunity. This paper introduces an improved hybrid spread spectrum technique based on a DS/FH mechanism. It presents a design model that incorporates slide-related removal before frequency hopping and multiplexed coherent accumulation. The paper details the system composition, algorithm design, and demodulation process. Simulation results show that the improved algorithm enhances detection accuracy, meets signal sensitivity requirements, and confirms the feasibility of the proposed approach.