摘要
采用一维线阵天线的混合天地波雷达(hybrid sky-surface-wave radar,HSSWR)系统不能利用仰角信息抑制多径扩展多普勒杂波(spread Doppler clutter,SDC),这制约了HSSWR系统在船舶目标探测方面的实际应用。针对这一问题,根据SDC与稳定海杂波在分数阶傅里叶变换(fractional Fourier transform,FRFT)域的不同聚集特性,提出一种基于FRFT的多径SDC抑制方法。理论分析和仿真实验验证了该方法的有效性。
The hybrid sky-surface-wave radar （HSSWR）system,with 1-D linear array antennas,cannot suppress multi-path spread Doppler clutter （SDC）,which restricts its practical application in ship targets detec-tion.To resolve this problem,based on the difference in the concentration of SDC and stable ocean clutter in fractional Fourier transform （FRFT）field,an SDC suppression approach on the basis of FRFT is proposed.Fi-nally,theoretical analysis and the results of simulations indicate its effectiveness.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2014年第12期2411-2416,共6页
Systems Engineering and Electronics
基金
国家自然科学基金(51309232)资助课题
