{
  "annotation_id": "a5947971-f38d-4e6c-ac5d-b361a1cf8b08",
  "date_created": "2026-03-02T18:00:35.849000Z",
  "date_modified": "2026-03-02T18:00:35.849000Z",
  "file_hash": "fd43421daa6aa0b2d9113f12b256b181d17c01a2d3f66b6f8bc963a19bd78ff6",
  "private": false,
  "record": {
    "abstract": "A derivation of the properties of pulsed radiative imaging systems is\npresented with examples drawn from conventional, synthetic aperture, and\ninterferometric radar. A geometric construction of the space and time\ncomponents of a radar observation yields a simple underlying structural\nequivalence between many of the properties of radar, including resolution,\nrange ambiguity, azimuth aliasing, signal strength, speckle, layover, Doppler\nshifts, obliquity and slant range resolution, finite antenna size, atmospheric\ndelays, and beam and pulse limited configurations. The same simple structure is\nshown to account for many interferometric properties of radar - height\nresolution, image decorrelation, surface velocity detection, and surface\ndeformation measurement. What emerges is a simple, unified description of the\ncomplex phenomena of radar observations. The formulation comes from fundamental\nphysical concepts in relativistic field theory, of which the essential elements\nare presented. In the terminology of physics, radar properties are projections\nof hidden variables - curved worldlines from a broken symmetry in Minkowski\nspacetime - onto a time-serial receiver.",
    "arxiv_id": "physics/0110038",
    "authors": [
      "Andrew K. Gabriel"
    ],
    "categories": [
      "physics.optics",
      "astro-ph",
      "hep-th",
      "physics.gen-ph"
    ],
    "doi": "10.1364/JOSAA.19.000946",
    "title": "Fundamental Radar Properties: Hidden Variables in Spacetime",
    "url": "https://arxiv.org/abs/physics/0110038"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fd24b267-53fb-474f-ba8d-d6bb2b6417eb",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}