Back to Search
Start Over
Wireless Sensor Array Network DoA Estimation from Compressed Array Data via Joint Sparse Representation
- Source :
- Sensors, Vol 16, Iss 5, p 686 (2016), Sensors (Basel, Switzerland), Sensors; Volume 16; Issue 5; Pages: 686
- Publication Year :
- 2016
- Publisher :
- MDPI AG, 2016.
-
Abstract
- A compressive sensing joint sparse representation direction of arrival estimation (CSJSR-DoA) approach is proposed for wireless sensor array networks (WSAN). By exploiting the joint spatial and spectral correlations of acoustic sensor array data, the CSJSR-DoA approach provides reliable DoA estimation using randomly-sampled acoustic sensor data. Since random sampling is performed at remote sensor arrays, less data need to be transmitted over lossy wireless channels to the fusion center (FC), and the expensive source coding operation at sensor nodes can be avoided. To investigate the spatial sparsity, an upper bound of the coherence of incoming sensor signals is derived assuming a linear sensor array configuration. This bound provides a theoretical constraint on the angular separation of acoustic sources to ensure the spatial sparsity of the received acoustic sensor array signals. The Cram e ´ r–Rao bound of the CSJSR-DoA estimator that quantifies the theoretical DoA estimation performance is also derived. The potential performance of the CSJSR-DoA approach is validated using both simulations and field experiments on a prototype WSAN platform. Compared to existing compressive sensing-based DoA estimation methods, the CSJSR-DoA approach shows significant performance improvement.
- Subjects :
- Engineering
compressive sensing
Array processing
02 engineering and technology
sensor array
lcsh:Chemical technology
Biochemistry
Article
Analytical Chemistry
wireless sensor network
0203 mechanical engineering
Sensor array
0202 electrical engineering, electronic engineering, information engineering
Electronic engineering
Computer Science::Networking and Internet Architecture
Coherence (signal processing)
lcsh:TP1-1185
Electrical and Electronic Engineering
Instrumentation
Fusion center
Computer Science::Information Theory
020301 aerospace & aeronautics
business.industry
Direction of arrival
020206 networking & telecommunications
Sparse approximation
Atomic and Molecular Physics, and Optics
Statistics::Computation
Compressed sensing
array processing
business
Algorithm
Wireless sensor network
Subjects
Details
- Language :
- English
- ISSN :
- 14248220
- Volume :
- 16
- Issue :
- 5
- Database :
- OpenAIRE
- Journal :
- Sensors
- Accession number :
- edsair.doi.dedup.....5c9fd4b4c994f229712519e64fc34a26