3D IMAGING METHOD FOR STEPPED FREQUENCY GROUND PENETRATING RADAR BASED ON COMPRESSIVE SENSING

Ji-Liang Cai, Chuang-Ming Tong, Wei-Jun Zhong, Wei-Jie Ji
2012 Progress In Electromagnetics Research M  
Long data collecting time is one of the bottlenecks of the stepped-frequency continuous-wave ground penetrating radar (SFCW-GPR). We discuss the applicability of the Compressive Sensing (CS) method to three dimensional buried point-like targets imaging for SFCW-GPR. It is shown that the image of the sparse targets can be reconstructed by solving a constrained convex optimization problem based on l 1 -norm minimization with only a small number of data from randomly selected frequencies and
more » ... equencies and antenna scan positions, which will reduce the data collecting time. Target localization ability, performance in noise, the effect of frequency bandwidth, and the effect of the wave travel velocity in the soil are demonstrated by simulated data. Numerical results show that the presented CS method can reconstruct the point-like targets in the right position even with 10% additive Gaussian white noise and some wave travel velocity estimation error.
doi:10.2528/pierm11121206 fatcat:au3ugheyjzdcnedp2uytbfngim