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Content Provider | IET Digital Library |
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Author | Zhang, Xiangyu Sun, Jun Cao, Xingrong |
Abstract | This study proposes a direction-of-arrival (DOA) estimation algorithm named robust sparse asymptotic minimum variance (RSAMV) to solve the current DOA algorithms' problems, such as the difficulty in weak target estimation, low resolution and the incapacity of separating coherent signal estimation. Through utilising a virtual weak target, the algorithm carries out dynamic diagonal loading to the sampling covariance matrix of SAMV in the iterative process, which effectively reduces weak target loss. Meanwhile, showing the feature of ultra-low side lobe and high sparseness, the spatial spectrum of RSAMV can easily achieve the high-resolution estimation of space target in the circumstances of coherent interference. Simulation results show that, compared with other algorithms, the RSAMV algorithm has higher spatial resolution ability and weak target detection ability. Its spatial spectrum has higher sparseness than other sparse algorithms and its performance is more robust than other SAMV algorithms. The Bering-Time Recording map processed by results that experiment on sea demonstrate the superiority of RSAMV algorithm. |
Starting Page | 7815 |
Ending Page | 7821 |
Page Count | 7 |
Volume Number | 2019 |
e-ISSN | 20513305 |
Issue Number | Issue 21, Nov (2019) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/2019/21 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2019.0720 |
Journal | The Journal of Engineering |
Publisher | The Institution of Engineering and Technology |
Publisher Date | 2019-08-13 |
Access Restriction | Open |
Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
Subject Keyword | Bering-time Recording Map Coherent Interference Coherent Signal Estimation Covariance Matrices Current DOA Algorithm Direction of Arrival Estimation DOA Estimation Dynamic Diagonal Loading High-resolution Estimation Interpolation And Function Approximation Iterative Method Iterative Process Linear Algebra Numerical Analysis Object Detection Robust Direction-of-arrival Estimation Robust Sparse Asymptotic Minimum Variance RSAMV Algorithm Sampling Covariance Matrix SAMV Algorithm Signal Processing And Detection Signal Processing Theory Space Target Spatial Resolution Ability Spatial Spectrum Ultra-low Side Lobe Virtual Weak Target Weak Target Detection Ability Weak Target Estimation Weak Target Loss |
Content Type | Text |
Resource Type | Article |
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