摘要
针对高频地波雷达易受到其他设备发射的高频信号干扰的问题,通过分析射频干扰与有效目标信号在雷达回波中的表现形式及其在雷达距离多普勒谱图中出现区域的差异,运用多重信号分类算法估计射频干扰的频率和方位角子空间,利用子空间投影的方法分别在频率和方位角上分解射频干扰信号和有用目标回波信号,之后从原信号中减去射频干扰分量,从而实现射频干扰抑制的目的.仿真结果与实测数据的处理结果都表明:该算法可以有效抑制射频干扰.
In order to solve the problem that radio frequency interference（RFI） deteriorate the per- formance of high frequency surface wave radar （HFSWR） significantly, this paper analyzes the difference of characteristic in radar echoes and range-Doppler（RD） figure between RFI and target signals, estimates the frequency and DOA reference to MUSIC algorithm and uses subspace projection methods to decompose RFI signals and useful target echo signa s on DOA and frequency, then subtracts radio frequency interfer- ence components from the original signals in order to achieve the the algorithm can effectively suppress RFI by analyzing simulation sults. RFI suppression. We can conclude that results and measured data processing re-
出处
《电波科学学报》
EI
CSCD
北大核心
2016年第4期639-646,共8页
Chinese Journal of Radio Science
基金
国家自然科学基金(61371063)
国家重大科学仪器设备开发专项(2013YQ160793)
