An Array Partitioning Scheme of Airborne Phased-Mimo Radar Based on Stap Sinr

Wang, Wei; Zou, Lin; Wang, and Xuegang

doi:10.2528/pierl18081503

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…For example, Fuhrmann et al [8] uses disjoint subarrays to transmit waveforms with special temporal and spatial properties to achieve an arbitrary shape of a beampattern at the transmitting side while retaining a phased-array like resolution at the receiving side. To reduce complexity and aperture loss from disjoint subapertures, other authors [9][10][11][12] propose a uniform overlapped subarray partition to expand subarray apertures while producing beampatterns with lower sidelobes as well as higher signal to interference plus noise ratios (SINRs). To exploit the DOFs from subarray partition further, nonuniform subarray structures were developed [13][14][15], which further promote beampattern and SINR performance.…”

Section: Introductionmentioning

confidence: 99%

Coherence optimised subarray partition for hybrid MIMO phased array radar

Wang

2021

IET Microwaves Antenna & Prop

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Hybrid MIMO phased array radar (HMPAR) is widely recognized in the research of radar systems owing to its capacity to provide a balance or trade-off between transmit coherent gain and waveform diversity gain. The balance or trade-off between these two gains is closely related to spatial coherence between different arrays, represented by the degree of cross-correlation between steering vectors over different angles. Proper subarray partitions can provide an extra degree of freedom for optimising the coherence of the array manifold. A coherence optimised subarray partition for HMPAR is proposed with an analysis of connections between coherence and subarray partitions. First, the definition of coherence of array manifold is presented, and its connection between beampattern and the signal to interference plus noise ratio (SINR) is analysed. Next, the problem of optimising array manifold coherence is transformed into the discrete coherence optimization of the steering vector codebook. By properly selecting different codewords with the proper degree of correlation between each other, coherence between the target and interference steering vectors is optimised. The original combinatorial problem is approximated by a series of subproblems, which is solved in iteratively. Numerical results revealed that the proposed subarray partition provides lower coherence, lower beampattern peak sidelobes and higher SINR compared with`other subarray configurations.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Introductionmentioning

confidence: 99%

Coherence optimised subarray partition for hybrid MIMO phased array radar

Wang

2021

IET Microwaves Antenna & Prop

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“…These proposed subarray configurations are designed based on the strategy of changing the size and the number of subarrays, without further exploration into structure design. Even though [25] and [26] delved into the optimal partition of equally overlapped subarrays through first order derivative analysis, no insight or theoretical analysis of the effect of subarray configuration on system performance, or the reason why one partition is better than the other, are provided. In fact, rather than changing the size and the number of sub-arrays [27], the investigation into the structure of subarray partition is not only possible but also necessary.…”

Section: Introductionmentioning

confidence: 99%

Hybrid MIMO Phased Array Radar With Center-Spanned Subarrays

Wang

2019

IEEE Access

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Hybrid Multiple-Input-Multiple-Output(MIMO) phased array radar, or Phased MIMO radar, is recognized for its capacity to provide trade-off between transmit coherent gain and waveform diversity gain. Such trade-off can be flexibly implemented by changing subarray partition schemes of the system, which in turn enhances system performance. In this paper, a center-spanned subarray configuration is proposed with detailed steps to develop: First, the center element of the whole transmit array is chosen. Next, the surrounding region of center element is determined as the center subarray for subsequent spanning. Finally, the subarray partition is implemented through spanning subarrays around the center subarray. Both theoretical derivations and simulation results reveal that the hybrid MIMO phased array radar with the proposed center-spanned subarray configuration has lower sidelobe beampattern and higher Signal to Interference Noise Ratio(SINR) than that of equally or unequally overlapped subarray partitions. INDEX TERMS Beampattern, center-spanned sub-arrays, phased MIMO radar, SINR.

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An Array Partitioning Scheme of Airborne Phased-Mimo Radar Based on Stap Sinr

Cited by 2 publications

References 9 publications

Coherence optimised subarray partition for hybrid MIMO phased array radar

Coherence optimised subarray partition for hybrid MIMO phased array radar

Hybrid MIMO Phased Array Radar With Center-Spanned Subarrays

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