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Content Provider | IET Digital Library |
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Author | Lee, Seongwook Yoon, Young Jun Lee, Jae Eun Sim, Heonkyo Kim, Seong Cheol |
Abstract | In this study, the authors propose an effective two-stage direction-of-arrival (DOA) estimation method for low signal-to-noise (SNR) signals in automotive radar systems. When antenna elements in the array receive low SNR signals, the performance of subspace-based DOA estimation algorithms is degraded. Concerning this case, they propose an enhanced DOA estimation method that offers better angular resolution and estimation performance. The authors’ proposed method is comprised of two stages. In the first stage, they roughly estimate the DOA using conventional subspace-based DOA estimation algorithms. Thereafter, the fine DOA estimation is performed in the next stage. The fine estimation includes a received signal calibration method using a priori information acquired from the previous stage. From simulation results, in terms of root mean square error and resolution probability, their proposed method exhibits a DOA estimation performance that is superior to that of the conventional method. Moreover, with actual measurement data, they verify that the proposed method can be applied to practical automotive radar systems. |
Starting Page | 1613 |
Ending Page | 1619 |
Page Count | 7 |
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.2017.0221 |
Journal | IET Radar, Sonar & Navigation |
Publisher Date | 2017-07-14 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | A Priori Information Angular Resolution Antenna Element Automotive Radar System Calibration Direction of Arrival Estimation Interpolation And Function Approximation Low SNR Signal Mean Square Error Method Numerical Analysis Probability Radar Antenna Radar Equipment Radar Resolution Radar Theory Received Signal Calibration Method Resolution Probability Road Vehicle Radar Root Mean Square Error Signal Processing And Detection Signal-to-noise Signal Statistics SubSpace-based DOA Estimation Algorithm System And Application Two-stage Direction-of-arrival Estimation Method Two-stage DOA Estimation Method |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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