CAJ | 학술논문

针对目前对Gram-Schmidt(G-S)自适应零点控制算法的研究大多只停留在理论研究阶段,还没有将其应用于低截获概率(LPI,Low Probability of Intercept)雷达设计,提出一种改进的G-S自适应零点控制算法应用于连续波(CW, Continuous Wave)体制LPI雷达.该算法可以把接收信号中的目标信息去除,只留下干扰信号,进而进行正交化处理,从而防止目标信息被当作干扰抑制掉.阵列方向图、零陷深度和误差分析等仿真结果表明:该算法在保证较快的收敛速度和较好的稳定性的基础上,相对于传统的G-S正交法有10 dB以上的零陷加深,从而验证了该算法能有效提升雷达的LPI性能.
침대목전대Gram-Schmidt(G-S)자괄응영점공제산법적연구대다지정류재이론연구계단,환몰유장기응용우저절획개솔(LPI,Low Probability of Intercept)뢰체설계,제출일충개진적G-S자괄응영점공제산법응용우련속파(CW, Continuous Wave)체제LPI뢰체.해산법가이파접수신호중적목표신식거제,지류하간우신호,진이진행정교화처리,종이방지목표신식피당작간우억제도.진렬방향도、령함심도화오차분석등방진결과표명:해산법재보증교쾌적수렴속도화교호적은정성적기출상,상대우전통적G-S정교법유10 dB이상적령함가심,종이험증료해산법능유효제승뢰체적LPI성능.
For the problem that the researches on Gram-Schmidt (G-S) adaptive null forming algorithm are still theoretical researches and there is no study on its application to LPI(Low Probability of Intercept) radar,a method of applying modified Gram-Schmidt (G-S) adaptive null forming algorithm to continuous wave (CW) radar is proposed.This algorithm can remove the target signals from the received signals and just leave the jamming signals to be orthogonalized,preventing that target signals are treated as jamming signals.Array pattern,null analysis and error analysis show that the modified G-S algorithm can form deeper null and has better stability.Then it verifies that the modified G-S algorithm can effectively improve radar's LPI performance.