{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,25]],"date-time":"2025-11-25T05:55:01Z","timestamp":1764050101897,"version":"3.45.0"},"reference-count":34,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2025,11,22]],"date-time":"2025-11-22T00:00:00Z","timestamp":1763769600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"crossref","award":["11872113"],"award-info":[{"award-number":["11872113"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Computation"],"abstract":"<jats:p>Right-angle dihedral structures produce strong, highly correlated returns that dominate radar cross-section (RCS) and image signatures. Conventional absorbers or random coding metasurfaces often lose effectiveness across wide frequency bands and angles, and cannot adequately suppress the corner-induced hot spots. We propose a wideband super-dispersion encoded surface (SDES) conformally applied to dihedral facets. The approach co-designs input-admittance for absorption with a deterministic super-dispersion phase sequence to redistribute energy spectrally and angularly, thereby decorrelating the returns. We implement SDES on a thin composite panel and evaluate it on canonical dihedral and dihedral\u2013cylindrical hybrid configurations. Unlike diffuse or random coding schemes, SDES enforces broadband, angle-stable dispersion with a deterministic sequence that specifically addresses corner singularity scattering. We also introduce perceptual-hashing as an imaging-domain metric to link RCS control with observable radar-image changes. From 12\u201318 GHz, SDES reduces the average monostatic RCS by 9.6 dB on a right-angle dihedral. In dihedral\u2013cylindrical hybrids, SDES removes the corner hot spots and drives the radar-image similarity index down to 0.31, confirming substantial alteration of scattering signatures.<\/jats:p>","DOI":"10.3390\/computation13120274","type":"journal-article","created":{"date-parts":[[2025,11,24]],"date-time":"2025-11-24T10:24:17Z","timestamp":1763979857000},"page":"274","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Dihedral Corner Region Camouflage in Radar Vision by Super-Dispersion Encoded Surfaces"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0009-0008-6818-6645","authenticated-orcid":false,"given":"Weibin","family":"Sun","sequence":"first","affiliation":[{"name":"Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China"},{"name":"National Key Laboratory of Scattering and Radiation, Beijing 100039, China"}]},{"given":"Wenlin","family":"Zhang","sequence":"additional","affiliation":[{"name":"National Key Laboratory of Scattering and Radiation, Beijing 100039, China"}]},{"given":"Xujin","family":"Yuan","sequence":"additional","affiliation":[{"name":"Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing 100081, China"}]},{"given":"He","family":"Tian","sequence":"additional","affiliation":[{"name":"National Key Laboratory of Scattering and Radiation, Beijing 100039, China"}]},{"given":"Sheng","family":"Li","sequence":"additional","affiliation":[{"name":"National Key Laboratory of Scattering and Radiation, Beijing 100039, China"}]},{"given":"Hongcheng","family":"Yin","sequence":"additional","affiliation":[{"name":"National Key Laboratory of Scattering and Radiation, Beijing 100039, China"}]}],"member":"1968","published-online":{"date-parts":[[2025,11,22]]},"reference":[{"key":"ref_1","first-page":"1730","article-title":"Automatic target recognition of SAR images based on a fused deep learning model","volume":"57","author":"Wang","year":"2019","journal-title":"IEEE Trans. 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