中文摘要：

长时间相干积累方法Radon-Fourier变换（RFT）中盲速旁瓣（BSSL）现象会导致雷达虚警增加、目标检测性能降低。针对BSSL问题,给出了一种基于多输入多输出（MIMO）雷达多载频设计的BSSL抑制方法。首先根据载频与BSSL分布的关系,详细推导了BSSL不交叠的约束条件;然后基于该约束条件给出了具体的载频设计公式。利用设计的载频可得到具有不交叠BSSL的两个RFT输出,通过联合处理这两个RFT输出,可实现BSSL抑制。给出了BSSL抑制性能的评价方法。理论分析和数值实验结果表明,本文算法能够在不降低RFT相干积累性能的同时,有效实现BSSL抑制。

英文摘要：

Blind speed side lobe （BSSL） in the long time coherent integration method of Radon-Fourier transform （RFT） can not only increase false alarm probability but also deteriorate radar detection performance. To address the BSSL problem, this paper proposes a novel BSSL suppression method based on the multi-carrier frequency design of a multiple input multiple output （MIMO） radar. First, based on the relationship between the carrier frequency and the distribution of BSSL, the non- overlapping constraint of BSSL is derived. Then, the multi-carrier frequency design method is provided in detail according to the constraint. By using the designed carrier frequencies, two RFT outputs with non-overlapping BSSL can be obtained. By jointly processing the RFT outputs, BSSL suppression can be realized. Furthermore, an evaluation method of the BSSL sup- pression is also provided. Both theoretical analysis and numerical experiments show that the proposed method can effectively suppress BSSL without deteriorating the integration performance of the RFT.