Simrad SU90 - Reducing Propeller Noise with Noise Filter

72
381291/C
Improvingtherecognitionofshandschools
usingreceiverlters
Topics
AboutthereceiverltersequenceintheSU90,page72
ReducingnoiseandreverberationwiththeAGC(AutomaticGainControl)function,
page73
ReducingpropellernoiseandinterferencewiththeNoiseFilter,page74
ReducingbottomandsurfacereverberationwiththeRCG(ReverberationControlled
Gain)function,page75
ReducingnoiseandfalseechoeswiththePing-PingFilter,page77
Adjustingtheintensityoftheechopresentations,page79
AboutthereceiverltersequenceintheSU90
TheltersintheSU90areimplementedin“series”.Anychangestoaltersettingmay
thereforehaveaneffectonsubsequentlters.
ABottomFilter
BNoiseFilter(1)
CGain&TVG(TimeVariableGain)
DNoiseFilter(2)
EAGC(AutomaticGainControl)
FRCG(ReverberationControlledGain)
GDisplayGain
HPing-PingFilter
NotethatGain,TVG(TimeVariedGain)andDisplayGainarenotlters,butincluded
onlytoillustratethecomplete"signalpath".
SimradSU90OperatorManual