Marport Scala2, User Manual

Page: 38 / 177

Scala2 | Version 5 | System Configuration
Echogram Filters
• Signal Interference Reduction (Low, Medium, High)
• Echosounder Interference Reduction
• Echosounder and Interference Reduction (Low, Medium, High)
Only for NBTE and HDTE echograms. They are used on the echograms of narrow band sensors and
similar to
Some Smoothing for sensors. They remove noise and interference from, for example, the
vessel echo sounder.
Choose accordingly to the level of noise you have, and if you want to see more or less interferences
on the echogram. For example, if you have a low level of noise you can choose
Echosounder
Interference Reduction . If you have a high level of noise, you can choose Echosounder and
Interference Reduction . Then, adapt the level of filtering (low/medium/high).
Here are examples of the effects of filters on echograms:
• Echosounder Interference Reduction Filter on a TE/TS echogram:
On the above picture, the top echogram has filtered data and the bottom echogram has raw data.
You can see on the second echogram that there are interferences due to an echosounder (circled
in orange). These interferences are mostly removed when the
Echosounder Interference
Reduction filter is applied (first echogram).
• Signal Interference Reduction Medium Filter on a TE/TS echogram:
| 37