Ghost

{
  "id": "MLC-T-MET-010522",
  "term": "Ghost",
  "field": "Meteorology and atmospheric science",
  "definition": "A spurious indication on a radar display that does not correspond to a real target at the position shown. Typical causes are side-lobe returns, multiple reflections along the signal path and second-trip echoes. A second-trip echo comes from a target beyond the maximum unambiguous range and is drawn at a false, closer range equal to its true range minus that maximum.",
  "see_also": [
    "angel",
    "clear-air echo"
  ],
  "url": "https://mlchart.com/terminology/meteorology/ghost/"
}