Robust monopulse beam synthesis with sparse elements in linear and planar arrays with element failure detection
| Autor: | Joohwan Chun, Jaehyun Park, Jihye Lee, Semin Kwak |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
business.industry 020208 electrical & electronic engineering Failure probability 020206 networking & telecommunications 02 engineering and technology Bayesian inference law.invention Compressed sensing Planar law Monopulse radar 0202 electrical engineering electronic engineering information engineering Electronic engineering Active antenna Electrical and Electronic Engineering Radar business Beam (structure) Computer Science::Information Theory |
| Zdroj: | IET Radar, Sonar & Navigation. 11:1251-1258 |
| ISSN: | 1751-8792 |
| DOI: | 10.1049/iet-rsn.2016.0645 |
| Popis: | In this study, the authors present monopulse beam synthesis methods with sparse elements robust to the antenna module failure. The monopulse beam radar generates two beams (sum/difference beams) simultaneously and it requires a large number of antenna elements in antenna arrays. However, it is desirable to reduce the number of active antenna elements. Furthermore, in many practical applications, some of antenna elements may experience the module failure. Accordingly, to design beams robust to the module failure and reduce the number of active antenna elements simultaneously, the authors propose a modified reweighted L1 minimisation methods in which the Bayesian-inference-based failure probability is exploited. The authors also discuss how the proposed sparse beam synthesis method can be carried out successfully in conjunction with the array failure diagnosis based on the Bayesian compressive sensing. |
| Databáze: | OpenAIRE |
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