Characterization of the Range Effect in Synthetic Aperture Radar Images of Concrete Specimens for Width Estimation 机翻标题: 暂无翻译,请尝试点击翻译按钮。

会议集名/来源
Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XII: SPIE Smart Structures and Materials + Nondestructive Evaluation And Health Monitoring Conference, 5-8 March 2018, Denver, Colorado, United States
出版年
2018
页码
1059916.1-1059916.9
会议地点
Denver
作者单位
Department of Civil and Environmental Engineering University of Massachusetts Lowell One University Avenue, Lowell, MA 01854, U.S.ADepartment of Civil and Environmental Engineering University of Massachusetts Lowell One University Avenue, Lowell, MA 01854, U.S.A
作者
Ahmed Alzeyadi;Tzuyang Yu
摘要
Nondestructive evaluation (NDE) is an indispensable approach for the sustainability of critical civil infrastructure systems such as bridges and buildings. Recently, microwave/radar sensors are widely used for assessing the condition of concrete structures. Among existing imaging techniques in microwave/radar sensors, synthetic aperture radar (SAR) imaging enables researchers to conduct surface and subsurface inspection of concrete structures in the range-cross-range representation of SAR images. The objective of this paper is to investigate the range effect of concrete specimens in SAR images at various ranges (15 cm, 50 cm, 75 cm. 100 cm. and 200 cm). One concrete panel specimen (water-to-cement ratio = 0.45) of 30-cm-by-30-em-by-5-cm was manufactured and scanned by a 10 GHz SAR imaging radar sensor inside an anechoic. chamber. Scatterers in SAR images representing two corners of the concrete panel were used to estimate the width of the panel. It was found that, the range-dependent pattern of corner scatters can be used to predict the width of concrete panels. Also, the maximum SAR amplitude decreases when the range increases. An empirical model was also proposed for width estimation of concrete panels.
机翻摘要
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关键词
concrete;synthetic aperture radar;width estimation;microwave
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