Research on practical approaches to space-time adaptive processing for heliborne battlefield surveillance radar

This paper studies the optional effective methods for clutter suppression and platform motion compensation in a heliborne battlefield surveillance radar (HBSR), which includes the traditional DPCA method, ΣΔ-ADPCA method, ΣΔ-STAP method, ΣΔ-STAP method with random-element auxiliary channel and extended ΣΔ-STAP method. A comparative analysis is performed. Theoretical analysis and computer simulation further illustrates that the extended ΣΔ-STAP method is suitable for modern electronic warfare environment. It has stronger clutter and jamming rejection performance in the concentrated jamming environment and stronger error robustness in the non-ideal real environment (i.e., array element amplitude and phase errors, heliborne crab, velocity error, etc.). Therefore, the extended ΣΔ-STAP approach is feasible and available for clutter suppression in HBSR