Echo box

{
  "id": "MLC-T-MET-005248",
  "term": "Echo box",
  "field": "Meteorology and atmospheric science",
  "definition": "A passive test instrument used to check the overall performance of a radar system, including both the transmitter and receiver. It is a high-Q resonant cavity that, when excited by the radar's transmitted pulse, stores the energy and reradiates it back to the receiver with a slow decay. The duration of the resulting signal on the radar display, known as the ringing time, indicates the system's performance.",
  "url": "https://mlchart.com/terminology/meteorology/echo-box/"
}