TY - GEN
T1 - Direction-finding based on the theory of super-resolution in sparse recovery algorithms
AU - Hung, Cheng Yu
AU - Kaveh, Mostafa
PY - 2015/8/4
Y1 - 2015/8/4
N2 - The problem of recovering directions-of-arrival in the sparse signal model with multiple snapshots is considered. Based on the theory of super resolution, multiple snapshots are used to jointly estimate directions-of-arrival in the continuous domain. Instead of uniformly discretizing the search range, interpolation preprocessing on the estimated super-resolution directions is suggested leading to a sparse convex optimization formulation. Moreover, a first order iterative algorithm is employed to reduce the computational time. A good selection of regularization parameter is guaranteed via the modified generalized cross validation (GCV). Numerical results demonstrate the performance of the proposed methods.
AB - The problem of recovering directions-of-arrival in the sparse signal model with multiple snapshots is considered. Based on the theory of super resolution, multiple snapshots are used to jointly estimate directions-of-arrival in the continuous domain. Instead of uniformly discretizing the search range, interpolation preprocessing on the estimated super-resolution directions is suggested leading to a sparse convex optimization formulation. Moreover, a first order iterative algorithm is employed to reduce the computational time. A good selection of regularization parameter is guaranteed via the modified generalized cross validation (GCV). Numerical results demonstrate the performance of the proposed methods.
KW - Directions of Arrival
KW - Generalized Cross Validation
KW - Multiple Measurement Vectors
KW - Sparsity
KW - Super Resolution
UR - http://www.scopus.com/inward/record.url?scp=84946020745&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84946020745&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.2015.7178402
DO - 10.1109/ICASSP.2015.7178402
M3 - Conference contribution
AN - SCOPUS:84946020745
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 2404
EP - 2408
BT - 2015 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2015 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 40th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2015
Y2 - 19 April 2014 through 24 April 2014
ER -