A High-dynamic Null-widen Algorithm Based on Reduceddimension Space-time Adaptive Processing
Da Lu · JOURNAL OF ELECTRONICS INFORMATION TECHNOLOGY · 2016
Space-Time Adaptive Processing(STAP) is effective to suppress wideband jammers in satellite navigation system. But in high-dynamic environment, the conventional STAP anti-jamming algorithms are invalid since jammers may easily move out of the array pattern null so that it can not be suppressed. In this paper, a new method of STAP null-widen is deduced based on Laplace distribution model of the changing interference DOA in high-dynamic environment. This method can broaden the width of nulls. But because of using of STAP, the amount of computation is increased significantly, a STAP null-widen method based on reduced-dimension Multistage Wiener Filters(MWF) is given in this paper. The effectiveness of the new method is proved in simulation part.