Sparse Array Optimization by Using the Simulated Annealing Algorithm

Behar, V.; Nikolov, Milen

doi:10.1007/978-3-540-70942-8_26

Cited by 3 publications

(1 citation statement)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the bidirectional radiation pattern of continue wave, sparse arrays designed with vernier, axial, radial and Non-Overlapping layouts, in the maximal sparse rate of 0.5, can achieve performances close to the dense array [11] ; With the approach of temporal encoding and frequency modulation to the excited signals and optimization for the location of the transmit array elements and weights of the receive array elements using simulated annealing algorithm, the signal to noise ratio and imaging efficiency of synthetic transmit aperture (STA) imaging system are improved [12] [13] . Based on the effective aperture, synthetic focusing method can largely improve the imaging frame rate of two-dimensional sparse array [14] .…”

Section: Introductionmentioning

confidence: 99%

Efficiency improvement of total focusing imaging based on sparse array method

Peng

et al. 2014

2014 IEEE Far East Forum on Nondestructive Evaluation/Testing

View full text Add to dashboard Cite

In this paper, a design concept of sparse array is applied to total focusing imaging technique. During the process, the elements of a phased array are partially selected according to the theory of effective aperture, in order to reduce the amount of captured data and shorten the processing time of TFM imaging. Simulated imaging with Field II program and experimental verification on two standard phased array specimens are performed, based on three selected arrays which are sparsely as 1/2, 1/4 and 1/8. The results compared with the full array in terms of image quality and computing efficiency, show that the computing efficiency of TFM imaging can get a rise of 40 percent by adopting the sparse array design. Meanwhile, an approximate resolution can be achieved at the lowest array sparse rate of 1/4. Affected by the side-lobes of the ultrasonic beam, contrast of the image may suffer little loss.

show abstract

Section: Introductionmentioning

confidence: 99%