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ATMOSPHERIC ECHO [1 record]

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Record 1 2017-02-20

English

Subject field(s)
  • Radar, Radio Guidance and Goniometry
  • Marine and River Navigation Aids
DEF

[An echo] received from a contact at an actual range greater than the radar range setting.

CONT

If an echo from a distant target is received after the following pulse has been transmitted, the echo will appear on the radarscope at the correct bearing but not at the true range. Second-trace echoes are unusual, except under abnormal atmospheric conditions, or conditions under which super-refraction is present.

French

Domaine(s)
  • Radar, radioguidage et radiogoniométrie
  • Aides à la navigation fluviale et maritime

Spanish

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