Covariance-Based Direction-of-Arrival Estimation of Wideband Coherent Chirp Signals via Sparse Representation.
Zhichao ShaZhengmeng LiuZhi-Tao HuangYiyu ZhouPublished in: Sensors (2013)
Keyphrases
- direction of arrival
- sparse representation
- doa estimation
- signal subspace
- dictionary learning
- canonical correlation analysis
- signal processing
- correlation matrix
- sparse coding
- fourier transform
- compressive sensing
- face recognition
- negative matrix factorization
- image classification
- estimation error
- dimensionality reduction
- image patches
- joint optimization
- instantaneous frequency
- sensor array
- frequency domain
- high dimensional data
- random projections
- antenna array
- image representation
- pairwise
- signal to noise ratio
- feature representation
- natural images
- blind source separation
- neural network
- covariance matrix
- image data
- feature vectors
- image processing
- machine learning