2D-DOA and Polarization Estimation Using a Novel Sparse Representation of Covariance Matrix With COLD Array.
Weijian SiYan WangChunjie ZhangPublished in: IEEE Access (2018)
Keyphrases
- covariance matrix
- sparse representation
- direction of arrival
- signal subspace
- correlation matrix
- estimation error
- doa estimation
- dictionary learning
- covariance matrices
- sparse coding
- principal component analysis
- sample size
- image patches
- compressive sensing
- face recognition
- dimensionality reduction
- reconstruction error
- image representation
- image classification
- signal processing
- gaussian mixture
- negative matrix factorization
- positive definite
- random projections
- data sets
- image processing
- high dimensional data
- objective function
- machine learning
- generative model
- nearest neighbor
- multiscale