一种新的相控阵机载预警雷达孤立干扰抑制方法
A New Method to Isolated Interferers Suppression for Phased Array AEW Radar
-
摘要: 在非均匀(Non-homogeneous)杂波环境中,孤立干扰若得不到有效抑制必将引起目标检测性能严重变差。对此该文提出了一种新的非均匀环境下两级空时自适应处理的级联算法,即首先根据均匀杂波的分布特性选取辅助波束用辅助通道法滤除均匀杂波,然后用直接数据域算法抑制孤立干扰。该方法具有性能优良、鲁棒性好和计算量低等优点,其有效性为计算机仿真实验结果所验证。Abstract: The heavy loss of target detection performance must be resulted if the isolated interferers can not be effectively suppressed in the non-homogeneous environment of clutter. Therefore, a new method of two stage hybrid space time adaptive processing in non-homogeneous environment is presented in this paper, in which the homogeneous clutter is firstly suppressed based on auxiliary channel processing approach by selecting auxiliary channel according to clutters distributing characters in the beam Doppier space and the isolated interferers is latterly mitigated based on direct dnla domain algorithm, This method has advantages of excellent target detection performance, good robust to whether small yaw exists or not, and low computation load. Simulation results are presented to demonstrate its effectiveness,
-
Brennan L E, Mallett J D. Theory of adaptive radar [J]. IEEE Trans. on. AES, 1973, 9(2): 237 - 251.[2]Adve R S, Hale T B ,Wicks M C. A two stage hybrid space-time adaptive processing algorithm [A]. IEEENational Radar Conference, Boston, MA, April 1999:279 - 284.[3]Adve R S, Hale T B, Wicks M C. Practical joint domain localized adaptive processing in homogeneous and nonhomogeneous environments, part 2: nonhomogeneous environments [J]. IEE Proc.-F, 2000, 147(2): 66 - 74.[4]董瑞军.机载雷达非均匀STAP方法及其应用[D].[博士论文],西安:西安电子科技大学,2002年9月.[5]Klemm R. Adaptive airborne MTI: an auxiliary channel approach [J]. IEEProc.- F, 1987, 134(3): 269 - 276.[6]廖桂生,保铮,张玉洪.相控阵AEW雷达杂波抑制的简化辅助通道法[J].电子科学学刊,1993,15(5):475-481.[7]Francos J M, Fu W, Nehorai A. Interference mitigation for STAP using the two-dimensional wold decomposition model [A]. IEEE ICASSP 2002, May 2002, vol. 3:Ⅲ-2897 - Ⅲ-2900.[8]Wang H, Cai L. On adaptive spatial-temporal processing for airborne surveillance radar systems [J], IEEE Trans. on AES,1994, 30(3): 660 - 669.[9]王永良,吴志文,彭应宁.适于非均匀杂波环境的空时自适应处理方法[J].电子学报,1999,27(9):56-58. -
计量
- 文章访问数: 2231
- HTML全文浏览量: 73
- PDF下载量: 659
- 被引次数: 0
下载:
