Design and characteristic analysis of hybrid OFD–LFM–PC waveforms in the MIMO radar

In this study, a new set of hybrid orthogonal frequency division–linear frequency modulation–phase coded (OFD–LFM–PC) waveforms are proposed to improve the detection performance of multiple-input-multiple-output (MIMO) radars. In the time domain, the inherent sidelobe properties of the spatial synth...

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Bibliographic Details
Published in:Journal of engineering (Stevenage, England) England), 2019-10, Vol.2019 (19), p.5868-5872
Main Authors: Hong, Sheng, Dong, Yantao, Ai, Yu, Wang, Yuhao, Zhao, Zhixin
Format: Article
Language:English
Subjects:
designed waveforms
filtering theory
frequency modulation
hybrid OFD–LFM–PC waveforms
hybrid orthogonal frequency division–linear frequency modulation–phase
IET International Radar Conference (IRC 2018)
MIMO communication
MIMO radar
modulated PC sequences
multiple-input-multiple-output radars
OFDM modulation
OFD–LFM waveforms
phase coding
radar signal processing
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Summary:In this study, a new set of hybrid orthogonal frequency division–linear frequency modulation–phase coded (OFD–LFM–PC) waveforms are proposed to improve the detection performance of multiple-input-multiple-output (MIMO) radars. In the time domain, the inherent sidelobe properties of the spatial synthesised signal of the hybrid OFD–LFM–PC waveforms are analysed. In the space domain, the transmitting power pattern of the designed waveforms is derived. The influence of the modulated PC sequences on the temporal and spatial properties of the proposed waveforms is also studied. The proposed waveforms can suppress the temporal sidelobes greatly and obtain almost omnidirectional transmitting power pattern which is preferred for target detection in wide area. Simulations demonstrate the superiority of the proposed waveforms over the commonly used OFD–LFM waveforms.
ISSN:2051-3305
2051-3305
DOI:10.1049/joe.2019.0427