Intelligent Reflecting Surface-Aided Electromagnetic Stealth over Extended Regions
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866917947450064896 |
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| author | Wu, Qingjie Zheng, Beixiong Zhang, Guangchi Ng, Derrick Wing Kwan Swindlehurst, A. Lee |
| author_facet | Wu, Qingjie Zheng, Beixiong Zhang, Guangchi Ng, Derrick Wing Kwan Swindlehurst, A. Lee |
| contents | Compared to traditional electromagnetic stealth (ES) materials, which are effective only within specific frequencies and orientations, intelligent reflecting surface (IRS) technology introduces a novel paradigm for achieving dynamic and adaptive ES by adapting its reflection pattern in real time to neutralize radar probing signals echoed back from the target. In this letter, we study an IRS-aided ES system mounted on an aerial target to evade radar detection admist uncertain/moving radar positions over an extended area. Specifically, we aim to optimize the IRS's passive reflection to minimize the maximum received signal-to-noise ratio (SNR) of the target echo signal in the area. A semi-closed-form solution is derived by first discretizing the continuous spatial frequency deviation to approximate the semi-infinite reflection gain constraint and then leveraging the Lagrange dual method. Simulation results are provided to validate that the proposed IRS-aided ES strategy can consistently reduce the reflection gains for radars located across a large region. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_05205 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Intelligent Reflecting Surface-Aided Electromagnetic Stealth over Extended Regions Wu, Qingjie Zheng, Beixiong Zhang, Guangchi Ng, Derrick Wing Kwan Swindlehurst, A. Lee Signal Processing Compared to traditional electromagnetic stealth (ES) materials, which are effective only within specific frequencies and orientations, intelligent reflecting surface (IRS) technology introduces a novel paradigm for achieving dynamic and adaptive ES by adapting its reflection pattern in real time to neutralize radar probing signals echoed back from the target. In this letter, we study an IRS-aided ES system mounted on an aerial target to evade radar detection admist uncertain/moving radar positions over an extended area. Specifically, we aim to optimize the IRS's passive reflection to minimize the maximum received signal-to-noise ratio (SNR) of the target echo signal in the area. A semi-closed-form solution is derived by first discretizing the continuous spatial frequency deviation to approximate the semi-infinite reflection gain constraint and then leveraging the Lagrange dual method. Simulation results are provided to validate that the proposed IRS-aided ES strategy can consistently reduce the reflection gains for radars located across a large region. |
| title | Intelligent Reflecting Surface-Aided Electromagnetic Stealth over Extended Regions |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2503.05205 |