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Kapitel 6: Benutzung des Radars 133
Nebenkeulen
Nebenkeulen werden durch kleine Energiemengen der gesendeten Impulse, die
außerhalb des schmalen Öffnungswinkels gesendet werden, erzeugt.
Die Auswirkungen von Nebenkeulen merken Sie am stärksten bei Zielen auf kurze
Entfernung (normalerweise unter 3 nm) sowie insbesondere bei großen Objekten.
Nebenkeulen erzeugen auf dem Radarbild Bögen (ähnlich den Bereichsringen), oder
es bildet eine Reihe von Echos mit gebrochenen Bögen.
Indirekte Echos
Es gibt viele verschiedene Arten von indirekten Echos oder sog. „Geisterbildern“.
Diese erscheinen manchmal als wahre Echos, sie sind aber im Allgemeinen
unterbrochen und haben eine schlechte Auflösung.
Wahres Echo Seitenecho
Hauptkeule
Antenne
Bogen
Neben-
keule
Neben-
keule
D1638-4
Falsches
Echo
Vorbei-
fahrendes
Schiff
Wahres Echo
D1641-4
Wahres Echo
Falsches
Echo
Mast
oder
Schornstein
81221_4.book Seite 133 Donnerstag, 8. November 2007 11:10 11
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Raymarine C70 User Manual - English - 240 pages

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Raymarine C70 Additional guide - Dutch - 28 pages

Raymarine C70 User Manual - Dutch - 238 pages


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