Title :
3-D ghost imaging with microwave radar
Author :
Ran Xu ; Yachao Li ; Mengdao Xing ; Peng Shao
Author_Institution :
Nat. Lab. of Radar Signal Process., Xidian Univ., Xian, China
Abstract :
In this paper, we demonstrate a new three-dimensional (3-D) radar imaging mechanism borrowing the concept of optical ghost imaging (GI). High range resolution is achieved by transmitting wideband electromagnetic (EM) signal, while high resolution in the orthogonal plane is obtained by correlating the echoes with radar antenna´s stochastically fluctuating radiation pattern which can be generated with a 2-D phased array. This new concept of radar imaging takes no advantage of relative motion between the target and radar platform. Moreover, by combining the compressive sensing (CS) theory, our proposed imaging system is capable of realizing super-resolution with fewer data samples. Numerical simulation is given to validate the proposal.
Keywords :
antenna phased arrays; antenna radiation patterns; compressed sensing; microwave imaging; phased array radar; radar antennas; radar imaging; radar resolution; stochastic processes; 2-D phased array; 3-D ghost imaging; CS theory; compressive sensing theory; data samples; echoes; high range resolution; microwave radar; numerical simulation; optical ghost imaging; orthogonal plane; radar antenna stochastically fluctuating radiation pattern; radar imaging; super resolution; three-dimensional radar imaging mechanism; wideband electromagnetic signal; Arrays; Image resolution; Microwave imaging; Radar antennas; Radar imaging; antenna array; compressive sensing (CS); ghost imaging; radar imaging; sparse; three-dimensional (3-D) imaging;
Conference_Titel :
Imaging Systems and Techniques (IST), 2014 IEEE International Conference on
Conference_Location :
Santorini
DOI :
10.1109/IST.2014.6958471