环形阵列相控阵全聚焦融合定位成像方法研究

doi:10.12305/j.issn.1001-506X.2026.05.05

Abstract

Abstract:

To address the large positioning blind zone and false imaging issues existing in phased array linear arrays, a full-focus fusion locationing imaging method is proposed based on a circular array. This method arranges the circular array at the center of the structure, and each linear array in the diameter direction of the array collects full matrix phased control data. The damage scattering signals obtained by each linear array are respectively subjected to beam correction and amplitude compensation. The results of each linear array are superimposed and fused by the full-focus fusion method to reduce the monitoring blind area and eliminate artifacts through mutual complementation in all directions, thereby achieving relatively accurate location imaging of damage. The results show that this method not only highlights the damage information and reduces artifacts in the imaging results, but also improves the accuracy of damage location.

Key words: phased array, Lamb wave, defect inspection, full-focus imaging

CLC Number:

Qi CHANG, Yong XU, Daibing HE, Heng ZHAO. Research on full-focus fusion locationing imaging method of circular array phased array[J]. Systems Engineering and Electronics, 2026, 48(5): 1492-1501.

Figures/Tables 10

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Table 1

References 30

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损伤位置/cm	定位结果				相控扫描融合		补偿前全聚焦融合		补偿后全聚焦融合
损伤位置/cm	Ⅰ阵列	Ⅱ阵列	Ⅲ阵列	Ⅳ阵列	定位结果	绝对误差	定位结果	绝对误差	定位结果	绝对误差
（10，15）	（11.57，13.79）	（10.85，14.40）	（11.81，13.58）	（4.30，17.23）	（4.60，17.16）	1.35	（8.97，15.42）	1.11	（9.70，15.30）	0.42
（6，10）	（4.69，10.53）	（−2.27，11.69）	（7.55，8.68）	（−3.44，11.24）	（7.41，8.83）	1.83	（5.90，9.90）	0.14	（5.90，9.90）	0.14
（7，−11）	（6.73，−11.20）	（1.36，−12.96）	（7.66，−10.54）	（8.28，−10.22）	（8.02，−10.27）	1.26	（6.70，−11.10）	0.32	（6.70，−11.10）	0.32
（−9，−10）	（−9.05，−10.06）	（−8.90，−10.24）	（−8.88，−10.34）	（−8.68，−10.34）	（−8.85，−10.19）	0.24	（−8.38，−10.22）	0.66	（−8.80，−10）	0.20
（−15，9）	（−14.91，8.96）	（−17.32，0）	（−14.94，8.98）	（−16.20，7.38）	（−15.02，9.02）	0.03	（−14.23，9.41）	0.87	（−14.70，9.20）	0.36

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Research on full-focus fusion locationing imaging method of circular array phased array

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