[Acoustics] Winriver and external heading: Be careful!!!

[Hartman, A.J. (Aad) (DON)]

Lately  we did an innovation project on the river Waal in the Netherlands.
There where problems with the angle of the transect.

We used a 600 kHz WH monitor, installed on the survey vessel Beyerinck.
Because this was constructed out of steel, we also used external heading
(TSS PosMV, satellitesystem).
The ADCP beam 3 misalignment was 45 degrees to starboard.

WinRiver 1.06 (international version) was used for datacollection.

The 45 degrees offset is filled in the compass area for beam 3 misalignment.

During processing we discovered that Winriver ignores this offset totally.
Also when data is converted to a standard ascii file, the beam3 misalignment
is ignored.

The "corrected ADCP heading" only contains heading from the compass,
magnetic variation and heading offset.

Here, winriver  international version should be changed!

Aad Hartman

RWS East-Netherlands, section ANI
A.J. Hartman (hydrologist)
tel. +31-(0)26-3530111
email: a.j.hartman at don.rws.minvenw.nl



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