{
  "abstract": "This letter develops a physics-informed one-shot beam tracking method for stacked intelligent metasurface (SIM)-enabled low-Earth-orbit (LEO) links with $K$ users and an $L$-layer SIM with $N$ meta-atoms per layer. The predictable orbital motion is propagated through the line-of-sight (LoS) geometry to forecast the finite-interval variation of the user signal-to-noise ratio (SNR) profile, and an analytical multilayer Jacobian relates this variation to the $LN$ SIM phase coefficients. Beam tracking is formulated as normalized SNR-profile preservation and solved through a single regularized Gauss--Newton correction that requires one Jacobian evaluation and a $K\\times K$ linear solve, thereby avoiding iterative reoptimization. A tracking-error bound separates the regularization residual from the nonlinear Taylor remainder and establishes a second-order local error under a full-row-rank Jacobian. Numerical results show that the proposed method retains approximately $94\\%$ and $92\\%$ of the iterative-reoptimization rate for $L=2$ and $L=4$, respectively, while running about $350\\times$ and $260\\times$ faster at $N=225$, and confirm the predicted second-order residual error behavior.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.05520",
  "author_total": 5,
  "authors": [
    {
      "name": "Chandan Kumar Sheemar"
    },
    {
      "name": "Giovanni Iacovelli"
    },
    {
      "name": "Sourabh Solanki"
    },
    {
      "name": "Wali Ullah Khan"
    },
    {
      "name": "Symeon Chatzinotas"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/cgt89w4v1ye52.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.05520",
  "fulltext_url": null,
  "id": "cgt89w4v1ye52",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.05520",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cs.IT"
    ],
    [
      "arxiv",
      "eess.SP"
    ],
    [
      "arxiv",
      "math.IT"
    ],
    [
      "openalex",
      "2208|Advanced Wireless Communication Technologies"
    ]
  ],
  "openalex": "W7220696866",
  "pdf_url": "https://arxiv.org/pdf/2610.05520",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/cgt89w4v1ye52.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:10Z",
      "native_id": "2610.05520",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.05520"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "arxiv:math.IT",
      "subfield": "general"
    }
  ],
  "title": "One-Shot Beam Tracking for Stacked Intelligent Metasurfaces-Assisted LEO Broadcasting",
  "title_text": "One-Shot Beam Tracking for Stacked Intelligent Metasurfaces-Assisted LEO Broadcasting",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:10Z",
  "url": "https://research.draconitic.com/paper/cgt89w4v1ye52",
  "venue": "arXiv",
  "versions": []
}