HD-MAX Echo Sounder User Guide
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Measured data error may occur due to some factors in preliminary
measurement. They can be corrected latterly. Click [Data correct] to enter
data correction interface to switch among parameter correction, delay
correction, surface elevation correction and draft correction.
Figure 15-1 Data Correction
Among them:
Transformation parameters correction: Correct the influence caused by
preliminary translation parameters setting.
Delay correction: Correct the errors caused by GPS locating data and
sounding data matching delay.
Water surface elevation correction: Change the points with great elevation
variation.
Draft correction: Correct draft changes influence caused by faster speed.