{
  "capability": {
    "authorityContext": "DARPA publicly describes signals of opportunity as non-navigation signals from sources such as television, radio, cellular towers, satellites, and natural phenomena. NIST's PNT profile supplies the risk-management context for evaluating external PNT services and dependencies.",
    "authorityReferences": [
      {
        "applies_to": "opportunisticpnt.com",
        "document_id": "DARPA ANS program",
        "id": "darpa-adaptable-navigation-opportunistic",
        "organization": "Defense Advanced Research Projects Agency",
        "public_authorized": true,
        "relevance": "Describes signals of opportunity and non-traditional sensors as alternate position-fix sources in GPS-limited environments.",
        "scope_note": "The DARPA program illustrates research directions and does not establish availability, legality, or fitness for a particular implementation.",
        "title": "Adaptable Navigation Systems",
        "url": "https://www.darpa.mil/research/programs/adaptable-navigation-systems"
      },
      {
        "applies_to": "opportunisticpnt.com",
        "document_id": "NIST IR 8323 Revision 1",
        "id": "nist-ir-8323r1-opportunistic",
        "organization": "National Institute of Standards and Technology",
        "public_authorized": true,
        "publication_context": "Published January 31, 2023",
        "relevance": "Provides a framework for identifying and managing risks associated with the PNT services and data on which an organization relies.",
        "title": "Foundational PNT Profile: Applying the Cybersecurity Framework for the Responsible Use of PNT Services",
        "url": "https://www.nist.gov/publications/foundational-pnt-profile-applying-cybersecurity-framework-responsible-use-positioning"
      }
    ],
    "definition": "The use of signals, observations, or environmental features not dedicated solely to PNT as potential contributors to positioning, navigation, or timing.",
    "deploymentStatus": "active",
    "directAnswer": "Opportunistic PNT uses signals, observations, or environmental features created for another purpose as potential positioning, navigation, or timing inputs. Examples can include communications broadcasts or natural phenomena, but each candidate source must be evaluated for access, stability, observability, legality, uncertainty, integrity, and operational availability.",
    "id": "https://opportunisticpnt.com/#opportunistic-pnt",
    "name": "Opportunistic PNT",
    "publicationStatus": "published",
    "questionOwned": "Which non-dedicated sources may contribute useful PNT context?",
    "relationshipContext": "Opportunistic PNT is closest to PNT Fusion. It identifies possible non-dedicated inputs; fusion addresses how qualified sources may be incorporated without allowing an uncertain or compromised input to dominate the result.",
    "relationshipPresentation": {
      "closest_related": "pntfusion.com",
      "difference": "Opportunistic PNT identifies non-dedicated candidate sources; PNT Fusion addresses qualification and combination of multiple sources into a coherent result.",
      "relationship": "An opportunistic source becomes useful only when an architecture can observe, characterize, authorize, and integrate it without overstating its stability or integrity.",
      "see_also": [
        "resilientpnt.ai",
        "navigationintegrity.com"
      ]
    },
    "role": "capability-namespace",
    "semanticRecord": "https://digitaleasements.com/ontology/v1/concept/opportunistic-pnt",
    "url": "https://opportunisticpnt.com/",
    "whyItMatters": "Non-dedicated sources may provide useful context where conventional PNT is obstructed or denied, but they are not controlled as navigation services and may change without notice. Their value depends on disciplined qualification rather than assumed availability."
  },
  "credibilityBoundary": "Implementation-neutral public orientation; no certification, endorsement, regulatory determination, or performance guarantee.",
  "editorialModel": "2.2",
  "lastModified": "2026-07-30",
  "manifestType": "ljp.public-capability-namespace",
  "manifestVersion": "1.0",
  "package": {
    "deploymentStatus": "active",
    "id": "https://sovereignpnt.com/#sovereign-pnt",
    "name": "Sovereign PNT & Resilient Timing",
    "namespaceName": "Sovereign PNT",
    "publicationStatus": "published",
    "role": "canonical-package-namespace",
    "url": "https://sovereignpnt.com/"
  },
  "peerCapabilityNamespaces": [
    {
      "name": "Resilient PNT",
      "url": "https://resilientpnt.ai/"
    },
    {
      "name": "Assured PNT",
      "url": "https://assuredpnt.ai/"
    },
    {
      "name": "PNT Fusion",
      "url": "https://pntfusion.com/"
    },
    {
      "name": "Navigation Integrity",
      "url": "https://navigationintegrity.com/"
    }
  ],
  "principle": "Publish the map, not the machine.",
  "publicResources": {
    "llms": "https://opportunisticpnt.com/llms.txt",
    "namespaceManifest": "https://opportunisticpnt.com/namespace.json",
    "ontology": "https://opportunisticpnt.com/ontology.jsonld",
    "overview": "https://opportunisticpnt.com/",
    "robots": "https://opportunisticpnt.com/robots.txt",
    "sitemap": "https://opportunisticpnt.com/sitemap.xml"
  },
  "publisher": {
    "contact": "support@ljpassetgroup.com",
    "id": "https://ljpassetgroup.com/#org",
    "name": "LJP Asset Group LLC",
    "url": "https://ljpassetgroup.com/"
  },
  "version": "2.2.0"
}