TY - GEN
T1 - Two-step (estimate and detect) sparse imaging
AU - Nikolic, Marija
AU - Djordjevic, Antonije
AU - Nehorai, Arye
PY - 2012
Y1 - 2012
N2 - We propose a two-step algorithm, for electromagnetic imaging of perfect electric conducting (PEC) targets hidden inside known medium, that uses l 1 regularization. The basic assumption is that the target can be approximated by a few equivalent sources (filament currents). In the first step, for each incidence, we estimate the locations of the equivalent sources corresponding to the target scattering centers. However, false solutions may appear due to the multiple scattering or insufficient measurements. We eliminate the false solutions in the second step; we decide for each of the estimated equivalent sources weather it belongs to the target.
AB - We propose a two-step algorithm, for electromagnetic imaging of perfect electric conducting (PEC) targets hidden inside known medium, that uses l 1 regularization. The basic assumption is that the target can be approximated by a few equivalent sources (filament currents). In the first step, for each incidence, we estimate the locations of the equivalent sources corresponding to the target scattering centers. However, false solutions may appear due to the multiple scattering or insufficient measurements. We eliminate the false solutions in the second step; we decide for each of the estimated equivalent sources weather it belongs to the target.
UR - http://www.scopus.com/inward/record.url?scp=84870479752&partnerID=8YFLogxK
U2 - 10.1109/APS.2012.6348674
DO - 10.1109/APS.2012.6348674
M3 - Conference contribution
AN - SCOPUS:84870479752
SN - 9781467304627
T3 - IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
BT - 2012 IEEE International Symposiumon Antennas and Propagation, APSURSI 2012 - Proceedings
T2 - Joint 2012 IEEE International Symposium on Antennas and Propagation and USNC-URSI National Radio Science Meeting, APSURSI 2012
Y2 - 8 July 2012 through 14 July 2012
ER -