Frequency Diverse Array MIMO Radar Adaptive Beamforming with Range-Dependent Interference Suppression in Target Localization
Conventional multiple-input and multiple-output (MIMO) radar is a flexible technique which enjoys the advantages of phased-array radar without sacrificing its main advantages. However, due to its range-independent directivity, MIMO radar cannot mitigate nondesirable range-dependent interferences. In...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2015-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2015/358582 |
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| Summary: | Conventional multiple-input and multiple-output
(MIMO) radar is a flexible technique which enjoys the advantages
of phased-array radar without sacrificing its main
advantages. However, due to its range-independent directivity,
MIMO radar cannot mitigate nondesirable range-dependent
interferences. In this paper, we propose a range-dependent
interference suppression approach via frequency diverse array
(FDA) MIMO radar, which offers a beamforming-based solution
to suppress range-dependent interferences and thus yields much
better DOA estimation performance than conventional MIMO
radar. More importantly, the interferences located at the same
angle but different ranges can be effectively suppressed by the
range-dependent beamforming, which cannot be achieved by
conventional MIMO radar. The beamforming performance as
compared to conventional MIMO radar is examined by analyzing
the signal-to-interference-plus-noise ratio (SINR). The Cramér-Rao lower bound (CRLB) is also derived. Numerical results
show that the proposed method can efficiently suppress range-dependent
interferences and identify range-dependent targets. It is particularly useful in suppressing the undesired strong
interferences with equal angle of the desired targets. |
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| ISSN: | 1687-5869 1687-5877 |