Beam Performance and Optimization Method for Meter-wave Frequency Diverse MIMO Radar in Multipath Scenario

Xingxing LI; Dangwei WANG; Xiaoyan MA

doi:10.11999/JEIT171030

Volume 40 Issue 8

Aug. 2018

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Article Navigation > Journal of Electronics & Information Technology > 2018 > 40(8): 1787-1794

Xingxing LI, Dangwei WANG, Xiaoyan MA. Beam Performance and Optimization Method for Meter-wave Frequency Diverse MIMO Radar in Multipath Scenario[J]. Journal of Electronics & Information Technology, 2018, 40(8): 1787-1794. doi: 10.11999/JEIT171030

Citation:

Xingxing LI, Dangwei WANG, Xiaoyan MA. Beam Performance and Optimization Method for Meter-wave Frequency Diverse MIMO Radar in Multipath Scenario[J]. Journal of Electronics & Information Technology, 2018, 40(8): 1787-1794. doi: 10.11999/JEIT171030

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Beam Performance and Optimization Method for Meter-wave Frequency Diverse MIMO Radar in Multipath Scenario

doi: 10.11999/JEIT171030

Air Force Early Warning Academy, Wuhan 430019, China

Funds: The National Natural Science Foundation of China (61179015)

Received Date: 2017-11-01
Rev Recd Date: 2018-04-26

Available Online: 2018-06-07

Publish Date: 2018-08-01

Abstract

Abstract

Traditional meter-wave radar usually suffers from the problem of Beam Split (BS) and Radar Blind Area (RBA) in the situation of low-grazing angle. To alleviate this difficulty, a Frequency Diverse Subaperturing Multiple-Input Multiple-Output (FDS-MIMO) radar is proposed and a theoretical framework for the analytical investigation of multipath characteristics is presented. The specular and perturbational multipath model is built, along with closed-form expression of the joint transmit-receive beampattern gain. Moreover, a notional concept of Multipath Mitigation Area (MMA) is defined together with the corresponding boundary conditions, and the Low Observability Rate (LOR) is defined as a performance benchmarkan to evaluate the FDS-MIMO radar beam overage capability. Next, the FDS-MIMO radar low-altitude beam coverage performance is optimized according to the soutions of the boundary conditions. Both theoretical analysis and numerical results demonstrate the advantages of FDS-MIMO radar over the conventional phased-MIMO radar in terms of low altitude beam coverage performance, and the BS and RBA of meter-wave radar is decreased by ultilizing the range-dependent beampattern.
- Frequency diverse MIMO radar,
- Range-dependent beampattern,
- Multipath characteristcs,
- Low-altitude beam performance

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References(17)

References

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