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| Content Provider | IET Digital Library |
|---|---|
| Author | Zhao, Yonghong Zhang, Linrang Gu, Yabin Guo, Yumei Zhang, Juan |
| Abstract | The computational complexity of wideband sparse representation (SR) greatly restricts the application of SR-based wideband direction-of-arrival (DOA) estimation in practical system. Here, an efficient method for wideband direction finding based on SR is proposed. This method combines the focusing operation with weighted subspace fitting (WSF) to not only decrease the computational complexity but also improve the performance of DOA estimation. Exploiting the result of the focusing operation, the covariance matrix at the focusing frequency can be obtained and used as the data for sparse recovery to get wideband DOA estimates. The WSF is employed to reduce the sensitivity to the noise and the regularisation parameter is given by the asymptotic distribution of the WSF cost function. Simulations are provided to show the efficiency and performance of the proposed method. |
| Starting Page | 1673 |
| Ending Page | 1678 |
| Page Count | 6 |
| ISSN | 17518784 |
| Volume Number | 11 |
| e-ISSN | 17518792 |
| Issue Number | Issue 11, Nov (2017) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rsn/11/11 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2017.0061 |
| Journal | IET Radar, Sonar & Navigation |
| Publisher Date | 2017-08-08 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Algebra Asymptotic Distribution Compressed Sensing Computational Complexity Covariance Matrices Covariance Matrix Direction of Arrival Estimation Focusing Frequency Focusing Operation Radio Direction Finding Radio Navigation And Direction Finding Regularisation Parameter Signal Processing And Detection Signal Processing Theory Signal Representation Sparse Recovery Sparse Representation Method Weighted SubSpace Fitting Wideband Direction Finding Wideband Direction-of-arrival Estimation Wideband DOA Estimation WSF Cost Function |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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