Three‐dimensional optimal focusing imaging algorithm for wall‐penetrating radar. Issue 19 (8th July 2019)

• Record Type: Journal Article
• Authors: Li, Yinchuan; Zhao, Yikun; Xiang, Yin; Ding, Zegang; Liu, Haibo; Liu, Quanhua
• Is Part Of: Journal of engineering. Volume 2019:Issue 19(2019)
• Page Start: 6063
• Page End: 6066
• Publication Date: 2019-07-08
• Subjects: image reconstruction -- image resolution -- radar imaging -- entropy; dimensional optimal focusing imaging algorithm -- wall‐penetrating radar -- WPR -- objects usually a few millimetres -- target imaging result -- three‐dimensional imaging algorithm -- multiple reference signals -- selection processing -- focused image -- coherent superposition processing; Engineering -- Periodicals; Engineering; Electronic journals; Periodicals; 620.005
• DOI: 10.1049/joe.2019.0044
• Languages: English
• ISSNs: 2051-3305

Abstract

Abstract : Wall‐penetrating radar (WPR) is the device to image very small objects buried inside the wall. The small objects usually a few millimetres, whereas the bandwidth of WPR limits its resolution up to several centimetres. As a result, the target imaging result of the traditional method is 'defocused' in the range direction. To solve this problem, a near‐field three‐dimensional imaging algorithm based on matching filtering with multiple reference signals and selection processing is proposed. Instead of obtaining a focused image via coherent superposition processing, a focused image is determined by selecting an image from a plurality imaging results of different reference depths according to the minimum entropy criterion. The proposed algorithm is validated by imaging the computer simulation technology simulation data and the measured data.