摘要
MIMO雷达波形设计通常需要联合考虑空域时域特性,然而,在单脉冲发射波形设计中,在保证期望空域特性的情况下,往往存在时域旁瓣较高的问题。针对这个问题,该文提出一种基于脉冲串编码的时域旁瓣抑制方法。该方法采用空域发射方向图设计与时域波形设计分离的方式,通过对脉冲串的各子脉冲初相编码进行优化,可以在保证空域发射方向图不变的情况下,进一步抑制时域旁瓣。仿真结果表明,该方法可以有效地降低各多普勒通道的距离旁瓣。
Both the spatial property and the temporal property should be considered in MIMO radar waveform design, It is a challenge to reduce the temporal sidelobe efficiently by designing the waveform in a single pulse, when the spatial property should be guaranteed. In this paper, an approach of pulse train code is proposed to suppress the temporal sidelobe, by which the spatial beampattern design and the temporal waveform design can be separated. The temporal sidelobe can be reduced without changing the beampattern. The numerical results show that the proposed method can reduce the range sidelobe in each Doppler channel efficiently with the consideration of Doppler frequency shift.
出处
《电子与信息学报》
EI
CSCD
北大核心
2012年第12期2948-2953,共6页
Journal of Electronics & Information Technology
基金
国家自然科学基金(61271291
61201285)
新世纪优秀人才支持计划项目(NCET-09-0630)
全国优秀博士学位论文作者专项资金(FANEDD-201156)
中央高校基本科研业务费专项资金资助课题
