Research Paper#Array Signal Processing, Sparse Arrays, Robustness🔬 ResearchAnalyzed: Jan 3, 2026 16:47
Optimal Robust Sparse Arrays: Discovery and Closed-Form Expressions
Published:Dec 30, 2025 11:39
•1 min read
•ArXiv
Analysis
This paper addresses the critical issue of sensor failure robustness in sparse arrays, which are crucial for applications like radar and sonar. It extends the known optimal configurations of Robust Minimum Redundancy Arrays (RMRAs) and provides a new family of sub-optimal RMRAs with closed-form expressions (CFEs), making them easier to design and implement. The exhaustive search method and the derivation of CFEs are significant contributions.
Key Takeaways
- •Optimal RMRAs were found for N=11 to 14 using exhaustive search.
- •Near/sub-optimal RMRAs were determined for N=15 to 20.
- •A new family of sub-optimal RMRAs with closed-form expressions (CFEs) was developed.
- •The CFEs allow for easier design and implementation of these arrays.
Reference
“The novelty of this work is two-fold: extending the catalogue of known optimal RMRAs and formulating a sub-optimal RMRA that abides by CFEs.”