{
  "abstract": "Directional multi-transmitter localization from sparse received-power observations is difficult because the receiver observes only the source-unresolved aggregate field: multiple directional sources superpose, building blockage fragments their visible regions, and stronger sources can mask weaker ones. We present SymNetPro, which retains the dual-task radio-map reconstruction and localization backbone of SymNet and adds two targeted components. First, a sparse line-of-sight (LOS)-aware attention bias injects obstruction-aware spatial relations into selected token interactions. Second, transmitter-drop augmentation recomposes training scenes after removing one sample-supported transmitter, exposing the model to controlled source-cardinality variation. Experiments on directional ray-traced urban environments show substantially lower OSPA than representative localization baselines under extreme sparse sampling, with consistent gains under measurement noise and increasing transmitter count. A transmitter-specific evidence analysis further shows that remaining misses concentrate in regimes where the target contributes little distinguishable power to the aggregate observation.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.33964",
  "author_total": 3,
  "authors": [
    {
      "name": "Lyuzhou Ye"
    },
    {
      "name": "Heng Fan"
    },
    {
      "name": "Yan Huang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1ezwa8r3mjxm9.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.33964",
  "fulltext_url": null,
  "id": "1ezwa8r3mjxm9",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.33964",
  "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.CV"
    ],
    [
      "arxiv",
      "cs.IT"
    ],
    [
      "arxiv",
      "math.IT"
    ],
    [
      "openalex",
      "2208|Indoor and Outdoor Localization Technologies"
    ]
  ],
  "openalex": "W7214802897",
  "pdf_url": "https://arxiv.org/pdf/2609.33964",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-06",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1ezwa8r3mjxm9.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:26Z",
      "native_id": "2609.33964",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.33964"
    }
  ],
  "subjects": [
    {
      "field": "mathematics",
      "origin": "arxiv:math.IT",
      "subfield": "general"
    }
  ],
  "title": "SymNetPro: LOS-Aware Directional Multi-Transmitter Localization from Sparse Radio Observations",
  "title_text": "SymNetPro: LOS-Aware Directional Multi-Transmitter Localization from Sparse Radio Observations",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:26Z",
  "url": "https://research.draconitic.com/paper/1ezwa8r3mjxm9",
  "venue": "arXiv",
  "versions": []
}