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。
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 clutter's distributing characters in the beam Doppler space and the isolated interferers is latterly mitigated based on direct data 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.
出处
《电子与信息学报》
EI
CSCD
北大核心
2005年第2期278-282,共5页
Journal of Electronics & Information Technology
基金
国家部级基金资助项目
关键词
相控阵机载预警雷达
空时自适应处理
非均匀
孤立干扰
直接数据域
Phased array AEW radar, Space time adaptive processing, Non-homogeneous, Isolated interferers, Direct data domain
