Improvement of the Microwave Imaging System by Deconvolution of the Antenna Pulse Response

2010 ◽  
Vol 56 (3) ◽  
pp. 209-214 ◽  
Author(s):  
Marek Bury ◽  
Yevhen Yashchyshyn ◽  
Jozef Modelski
Keyword(s):  
Image Reconstruction ◽  
System Performance ◽  
Imaging System ◽  
Measurement Data ◽  
Pulse Response ◽  
Microwave Imaging ◽  
Simple Method

Improvement of the Microwave Imaging System by Deconvolution of the Antenna Pulse ResponseIn the paper a microwave imaging system and its algorithm of image reconstruction from the raw measurement data were briefly introduced. Authors observed that pulse responses of the antennas used in the system have similar duration to the measurement pulse and therefore also contribute to the limits of system resolution. Paper presents a simple method that improves the system performance by additional deconvolution of the antenna pulse responses. Method was verified experimentally.

Holographic Microwave Imaging for Breast Cancer Detection Based on Compressive Sensing

2017 ◽  
Author(s):  
Lulu Wang ◽  
Hu Peng
Keyword(s):  
Breast Cancer ◽  
Compressive Sensing ◽  
Cancer Detection ◽  
Imaging System ◽  
Measurement Data ◽  
Operation Time ◽  
Microwave Imaging ◽  
Breast Cancer Detection ◽  
Split Bregman ◽  
Small Breast

Microwave imaging (MI) has been considered as an alternative way to X-ray mammography for breast cancer detection. This paper presents a compressive sensing based holographic microwave imaging (CS-HMI) approach for diagnosing of breast cancer. A numerical imaging system is developed to validate the proposed CS-HMI approach, which includes a realistic human breast phantom and measurement model. Small breast tumour can be detected in the reconstructed CS-HMI image via Split Bregman (SB) with using 10% measurement data. Simulation and experimental results show that CS-HMI has the ability to produce high quality image by using significantly less measurement data and operation time.

An Efficient Image Reconstruction Method for Breast Cancer Detection Using an Ultra-Wideband Microwave Imaging System

2016 ◽  
Vol 36 (4) ◽  
pp. 225-235 ◽  
Author(s):  
Sidi Mohammed Chouiti ◽  
Lotfi Merad ◽  
Sidi Mohammed Meriah ◽  
Xavier Raimundo ◽  
Abdelmalik Taleb-Ahmed
Keyword(s):  
Breast Cancer ◽  
Image Reconstruction ◽  
Cancer Detection ◽  
Imaging System ◽  
Microwave Imaging ◽  
Breast Cancer Detection ◽  
Ultra Wideband ◽  
Reconstruction Method ◽  
Image Reconstruction Method

MICROWAVE IMAGING OF EMBEDDED OBJECT USING AN ENHANCED IMAGE RECONSTRUCTION ALGORITHM

2015 ◽  
Vol 74 (20) ◽  
pp. 1793-1801
Author(s):  
Sidi Mohammed Chouiti ◽  
Lotfi Merad ◽  
Sidi Mohammed Meriah ◽  
Xavier Raimundo
Keyword(s):  
Image Reconstruction ◽  
Reconstruction Algorithm ◽  
Microwave Imaging ◽  
Image Reconstruction Algorithm

A Microwave Imaging System for the Detection of Targets Hidden behind Dielectric Walls

2020 ◽  
Author(s):  
Renato Cicchetti ◽  
Valentina Cicchetti ◽  
Sandra Costanzo ◽  
Paolo D'Atanasio ◽  
Alessandro Fedeli ◽  
...  
Keyword(s):  
Imaging System ◽  
Microwave Imaging

Comparison of the Bidirectional Load Test with the Top-Down Load Test

2005 ◽  
Vol 1936 (1) ◽  
pp. 108-116 ◽  
Author(s):  
Oh Sung Kwon ◽  
Yongkyu Choi ◽  
Ohkyun Kwon ◽  
Myoung Mo Kim
Keyword(s):  
Load Transfer ◽  
Measurement Data ◽  
Load Test ◽  
Load Testing ◽  
Pile Head ◽  
Top Down ◽  
Simple Method ◽  
Testing Method ◽  
Settlement Behavior ◽  
Cell Test

For the past decade, the Osterberg testing method (O-cell test) has been proved advantageous over the conventional pile load testing method in many aspects. However, because the O-cell test uses a loading mechanism entirely different from that of the conventional pile loading testing method, many investigators and practicing engineers have been concerned that the O-cell test would give inaccurate results, especially about the pile head settlement behavior. Therefore, a bidirectional load test using the Osterberg method and the conventional top-down load test were executed on 1.5-m diameter cast-in-place concrete piles at the same time and site. Strain gauges were placed on the piles. The two tests gave similar load transfer curves at various depth of piles. However, the top-down equivalent curve constructed from the bidirectional load test results predicted the pile head settlement under the pile design load to be approximately one half of that predicted by the conventional top-down load test. To improve the prediction accuracy of the top-down equivalent curve, a simple method that accounts for the pile compression was proposed. It was also shown that the strain gauge measurement data from the bidirectional load test could reproduce almost the same top-down curve.

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