Evaluation of electromagnetic scattering characteristics of construction solid waste-A theoretical study of solid waste identification

Yuheng Chen; Zhongshi Pei; Xiaoxuan Mao; Lulu Fan; Meng Xu; Yang Li; Dongsheng Wang; Junyan Yi

doi:10.1016/j.scitotenv.2024.172312

Evaluation of electromagnetic scattering characteristics of construction solid waste-A theoretical study of solid waste identification

Sci Total Environ. 2024 Jun 1:927:172312. doi: 10.1016/j.scitotenv.2024.172312. Epub 2024 Apr 8.

Authors

Yuheng Chen¹, Zhongshi Pei², Xiaoxuan Mao³, Lulu Fan⁴, Meng Xu³, Yang Li⁵, Dongsheng Wang⁶, Junyan Yi⁷

Affiliations

¹ School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China. Electronic address: 20S032029@stu.hit.edu.cn.
² School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China. Electronic address: hitpzs@hit.edu.cn.
³ School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China.
⁴ Shenzhen Tagen Grp Co Ltd, Shenzhen 518060, China.
⁵ School of Future Technology, Harbin Institute of Technology, Harbin 150090, China. Electronic address: li.yang@hit.edu.cn.
⁶ School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China. Electronic address: wangds@hit.edu.cn.
⁷ School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin 150090, China. Electronic address: yijunyan@hit.edu.cn.

PMID: 38599403
DOI: 10.1016/j.scitotenv.2024.172312

Abstract

The surge in urban development has resulted in a substantial accumulation of construction solid waste (CSW). However, prevailing identification methods of CSW remain predominantly two-dimensional in scope and need to be more efficient. This study employs an approach, combining simulation and experimental analyses, to delve into the factors influencing the electromagnetic scattering characteristics of CSW, investigating the feasibility of employing Synthetic Aperture Radar (SAR) to recognize CSW. The findings show that the computational time of MLFMM and PO is only 3.28 % and 0.029 % of MM among different simulation methods. The results underscore the collective impact of material types, surface structures, and curvature on the scattering characteristics of CSW. The difference in average intensity between different materials can reach up to 13 dB. Exploiting these distinctions in scattering enables the precise identification of high-value waste components, such as intact bricks and steel bars, within the intricate landscape of CSW.

Keywords: Construction solid waste; Electromagnetic scattering characteristics; FEKO simulation; Synthetic aperture radar.