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Blind Speed Side Lobe Suppression in Radon-Fourier Transform Based on MIMO Radar with Multi-carrier Frequency
Received date: 2012-08-09
Revised date: 2013-01-21
Online published: 2013-01-28
Supported by
National Natural Science Foundation of China (61271391, 61225005); Beijing Municipal Natural Science Foundation (4122038); China Ministry Research Foundation (9140A07021012JW0101); Aerospace Innovation Foundation (CASC201104); Aerospace Supporting Foundation; Tsinghua National Laboratory for Information Science and Technology (TNList) Cross-discipline Foundation
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 suppression 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.
QIAN Lichang , XU Jia , SUN Wenfeng , PENG Yingning . Blind Speed Side Lobe Suppression in Radon-Fourier Transform Based on MIMO Radar with Multi-carrier Frequency[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013 , 34(5) : 1181 -1190 . DOI: 10.7527/S1000-6893.2013.0073
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