A Novel Generalized Nested Array MIMO Radar for DOA Estimation with Increased Degrees of Freedom and Low Mutual Coupling
Abstract
:1. Introduction
2. Signal Model
3. Generalized Nested Array MIMO Radar Configuration
3.1. Review of Sum Co-Array and Difference Co-Array
3.2. Reformulation of Generalized Nested Array
3.3. Design Principle for GNA-MIMO Radar
3.4. Properties of the GNA-MIMO Radar
3.5. Optimal M and N
4. Performance Analysis
4.1. The Consecutive DOFs
4.2. The Mutual Coupling Leakage Rate
4.3. The CRB Bound
5. Simulation Results
5.1. MUSIC Spectrum
5.2. The RMSE Performance versus SNR and Snapshots
5.3. Resolution Performance
6. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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When M Is | The Optimal | The Optimal , |
---|---|---|
Even | , | |
Odd | , | , |
The Total Number of Physical Radar Elements | The Closed-Form Expression of Consecutive DOFs | |
---|---|---|
UCA-MIMO radar in [20] | ||
GTNA-MIMO radar in [19] | ||
NA-MIMO radar in [19] | ||
UGCA-MIMO radar in [24] | ||
The proposed GNA-MIMO radar | Equation (14) |
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Yang, Z.; Bi, Z.; Chen, Y.; Hao, H. A Novel Generalized Nested Array MIMO Radar for DOA Estimation with Increased Degrees of Freedom and Low Mutual Coupling. Sensors 2024, 24, 3952. https://doi.org/10.3390/s24123952
Yang Z, Bi Z, Chen Y, Hao H. A Novel Generalized Nested Array MIMO Radar for DOA Estimation with Increased Degrees of Freedom and Low Mutual Coupling. Sensors. 2024; 24(12):3952. https://doi.org/10.3390/s24123952
Chicago/Turabian StyleYang, Zhongtian, Zhengyang Bi, Ye Chen, and Honghao Hao. 2024. "A Novel Generalized Nested Array MIMO Radar for DOA Estimation with Increased Degrees of Freedom and Low Mutual Coupling" Sensors 24, no. 12: 3952. https://doi.org/10.3390/s24123952