LAUSR

A novel anti-jamming receiver with harmonic-based space-time adaptive processing (STAP) is presented. In radio frequency (RF) front, a 1-bit time-modulated array (TMA) is deployed to modulate the received signals periodically, indicating that only one RF channel is required. Then in digital domain, the generated multiple harmonics are extracted to the same frequency for harmonic-based STAP. Theoretical derivations of harmonic signal model and anti-jamming power inversion (PI) algorithm are provided. Simulation results show that the harmonic-based STAP method has additional frequency resolution and outperforms the pure single-channel spatial filtering method. Also, the proposed receiver is superior to the multi-channel anti-jamming receiver in terms of hardware complexity, cost and unbalances of amplitude and phase.