雷达学报2016，Vol.5Issue(4)：373-377,5.DOI:10.12000/JR15124
天波雷达后多普勒自适应波束形成
Post-Doppler Adaptive Digital Beamforming of Skywave Radar
摘要
Abstract
The analytical expression of shortwave interference in the range-Doppler domain is derived and is found to exhibit a constant-amplitude spectrum ridge parallel to the range axis. The spatial nonstationarity of the shortwave interference induced by ionosphere perturbation is then analyzed and is found to be equivalent to the amplitude-phase error between the same frequency points of shortwave interference on different antenna elements; hence, the above mentioned spatial nonstationarity only a has a slight effect on the performance of Adaptive Digital BeamForming (ADBF). On the basis of the above analyses, this paper presents a post-Doppler ADBF approach for skywave radar. This approach involves transforming the received signal in each antenna element into a range-Doppler domain and then performing adaptive processing at each Doppler frequency point. The real radar data processing conducted in this study shows that the ADBF approach has a good interference suppression performance and strong robustness.关键词
天波雷达/自适应波束形成/短波干扰Key words
Skywave radar/Adaptive Digital BeamForming (ADBF)/Shortwave interference分类
信息技术与安全科学引用本文复制引用
陈希信..天波雷达后多普勒自适应波束形成[J].雷达学报,2016,5(4):373-377,5.基金项目
国家自然科学基金(61271327,61071164) Foundation Items：The National Natural Science Foundation of China (61271327,61071164) （61271327,61071164）
