{
  "abstract": "Sequential sounding in UAV fluid-antenna systems (FASs) provides additional spatial information but delays transmission, causing earlier channel observations to age. This paper addresses the resulting information--freshness tradeoff by jointly determining where to probe and when to stop under blockwise hardware constraints. A dynamic Karhunen--Loève estimator aligns asynchronous measurements with the transmission state, covariance information gain selects feasible probe locations, and an age-discount identity with a local one-more-slot condition characterizes the covariance-level balance between information and freshness. Paired simulations show that temporal alignment recovers most of the lower-tail reliability lost by static stacking, covariance-aware probing ranks highest numerically among the evaluated policies, and optimized one-slot sounding becomes statistically competitive with two-slot alternatives at the highest tested mobility. Within the evaluated schedule family, increasing mobility shifts the competitive operating region toward shorter scans, supporting joint probe-placement and sounding-duration design.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.06537",
  "author_total": 4,
  "authors": [
    {
      "name": "Yuanhui Wu"
    },
    {
      "name": "Hao Jiang"
    },
    {
      "name": "Liang Wu"
    },
    {
      "name": "Zaichen Zhang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/45gqjkywt9kj7.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.06537",
  "fulltext_url": null,
  "id": "45gqjkywt9kj7",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.06537",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cs.IT"
    ],
    [
      "arxiv",
      "math.IT"
    ],
    [
      "openalex",
      "1705|Age of Information Optimization"
    ]
  ],
  "openalex": "W7212084692",
  "pdf_url": "https://arxiv.org/pdf/2609.06537",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-06",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/45gqjkywt9kj7.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:58Z",
      "native_id": "2609.06537",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.06537"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "arxiv:math.IT",
      "subfield": "general"
    }
  ],
  "title": "UAV Fluid-Antenna Channel Acquisition under Intra-Scan Channel Aging",
  "title_text": "UAV Fluid-Antenna Channel Acquisition under Intra-Scan Channel Aging",
  "type": "preprint",
  "updated_at": "2026-10-30T12:19:58Z",
  "url": "https://research.draconitic.com/paper/45gqjkywt9kj7",
  "venue": "arXiv",
  "versions": []
}