Linear Aperiodic Array Synthesis Using an Improved Genetic Algorithm

Cen, Ling; Yu, Zhu Liang; Ser, Wee; Cen, Wei

doi:10.1109/tap.2011.2173111

Cited by 131 publications

(79 citation statements)

References 31 publications

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“…Although many studies have been published on aperiodic array pattern synthesis, we should notice that the PSL sharply decreases with the steering angle scanning from normal direction to the edge direction when keeping the mainbeam width unchanged [13]. In [13], the authors proposed that when the array steering direction is close to the endfire direction of the array, the PSL will be very high, because the effective array aperture is very small.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, it searches the sensor positions over a grid space. Although the SA based method [15] has high performance in array pattern synthesis, it is possible that sparse arrays with continuously spaced sensors could have a high degree of freedom in lowering the PSL [13].…”

Section: Introductionmentioning

confidence: 99%

“…In [13], the authors proposed that when the array steering direction is close to the endfire direction of the array, the PSL will be very high, because the effective array aperture is very small.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Array Pattern Synthesis Using a Digital Position Shift Method

Han¹,

Wang²

2016

RADIOENGINEERING

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Array Pattern Synthesis Using a Digital Position Shift Method

Han¹,

Wang²

2016

RADIOENGINEERING

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show abstract

“…Nonuniform and sparse array arrangements are also widely employed [16][17][18][19][20][21]. Solutions based on genetic algorithm [22,23], random spacing [24], linear programming [25], and compressive sensing [26][27][28] have been proposed for phased-array thinning. But sparse array elements have the drawbacks of generating grating lobes.…”

Section: Introductionmentioning

confidence: 99%

Joint Phased-MIMO and Nested-Array Beamforming for Increased Degrees-of-Freedom

Zhu

Chen

Shao

2015

International Journal of Antennas and Propagation

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Phased-multiple-input multiple-output (phased-MIMO) enjoys the advantages of MIMO virtual array and phased-array directional gain, but it gets the directional gain at a cost of reduced degrees-of-freedom (DOFs). To compensate the DOF loss, this paper proposes a joint phased-array and nested-array beamforming based on the difference coarray processing and spatial smoothing. The essence is to use a nested-array in the receiver and then fully exploit the second order statistic of the received data. In doing so, the array system offers more DOFs which means more sources can be resolved. The direction-of-arrival (DOA) estimation performance of the proposed method is evaluated by examining the root-mean-square error. Simulation results show the proposed method has significant superiorities to the existing phased-MIMO.

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“…Evolutionary optimization algorithms, such as genetic algorithm (GA) [3,4], particle swarm optimization (PSO) method [5,6] and some hybrid methods [7,8], have been successfully applied to synthesize array patterns to the required. However, the involved computation time to good result is always measured in hours or even days and/or the array size is not too large.…”

Section: Introductionmentioning

confidence: 99%

Pattern Synthesis for Large Planar Arrays Using a Modified Alternating Projection Method in an Affine Coordinate System

Hua¹,

Li²,

Shi³

2014

PIER M

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Abstract-A pattern synthesis approach based on a modified alternating projection method in an affine coordinate system is proposed in this paper. The approach is suitable for large planar arrays with skewed element layout. According to the affine transformation theory, the radiation pattern of the array with a periodic parallelogram element layout could be written down immediately from that of a conventional one with rectangle cells when a pattern invariant group is defined. Just as known, the conventional alternating projection method is sensitive to the starting point and easy to fall into local optimum; in this paper we introduce a modified alternating projection method with a variable projection operator. To verify the rationality of the proposed method, several examples have been performed on our personal computer. Results show that the method could quickly synthesize the array patterns to the required with high accuracy. In addition, if the array has a triangle or parallelogram element layout, the required antennas to fill up the aperture is reduced when compared with the conventional one with antennas arranged along a rectangle grid. In our examples, the maximum reduction is about 18.09%, which is quite beneficial to reduce the weight and cost of the array.

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Linear Aperiodic Array Synthesis Using an Improved Genetic Algorithm

Cited by 131 publications

References 31 publications

Array Pattern Synthesis Using a Digital Position Shift Method

Array Pattern Synthesis Using a Digital Position Shift Method

Joint Phased-MIMO and Nested-Array Beamforming for Increased Degrees-of-Freedom

Pattern Synthesis for Large Planar Arrays Using a Modified Alternating Projection Method in an Affine Coordinate System

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