Raymarine E70293 - CHIRP Sonar Overview

2.3CHIRPDownVision
™
overview
DownVision
™
producesawide–angleside-to-side
beamandathinfore-to-aftbeam.Thecoverageof
theDownVision
™
beamisawatercolumndirectly
beneathandtothesidesofthevessel.
DownVision
™
beam
D12777-2
DownVision
™
iseffectiveatlowervesselspeeds.In
deeperwaterstheCHIRPbandwidthisautomatically
optimizedtoimprovebottomlockandthedetectionof
movingobjects(e.g.sh)inthewiderwatercolumn.
Thewide,thinbeamproducescleartargetreturns.
TheuseofCHIRPprocessingandahigheroperating
frequencyprovideamoredetailedimage,making
iteasiertoidentifybottomstructuresaroundwhich
shmayreside.
CHIRPDownVision
™
screenexample
2.4CHIRPSonaroverview
CHIRPsonarproducesaconicalshapedbeam,the
coverageoftheconicalbeamisthewatercolumn
directlybeneaththevessel
Conicalbeam
D12784-2
Sonariseffectiveatarangeofspeeds.Indeeper
waterstheCHIRPbandwidthisautomatically
optimizedtoimprovebottomlockandthedetection
ofmovingobjects(e.g.sh)inthewiderwater
column.
CHIRPsonarscreenexample
Documentandproductinformation
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