Name:

ADCP Navigation Method

Description:

A reference table for codes that describe the navigation method for an Acoustic Doppler Current Profiler (ADCP) discharge measurement.

Authority:

United States Geological Survey, Surface Water User Group

Reference List

Code Sort Order Valid Flag Name Description
UNSP 1 true Unspecified The navigation method was not specified.
GGA 2 true DGPS unit using position NMEA-0183 output from DGPS unit using position differentiation by latitude & longitude.
VTG 3 true DGPS unit using velocity NMEA-0183 output from DGPS unit using velocity output from the DGPS unit.
BT 4 true Bottom tracking bottom tracking doppler shift used to compute boat speed over ground.
NONE 5 true No velocity references no velocity references therefore velocities represent both boat and water movement.