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The Trimble GPS receiver provides position data for scientific devices.

Summary

The SPS461 GPS Heading and Positioning Receivers are modular, dual-antenna systems for marine construction and hydrographic survey. It may improve accuracy by using DGPS via SBAS, OmniSTAR VBS, MSK Beacon or external RTCM DGPS corrections. The receiver is equipped with a single GA530 L1/L2/OmniSTAR/Beacon/SBAS antenna. Therefore heading, roll and pitch cannot be calculated.


Manufacturer Trimble
Model Trimble Marine SPS461
Serial No. n/a
Type satellite positioning system


Contacts

Name Institution Role
Peter Gerchow Alfred-Wegener-Institute Data Provider
Ralf Krocker Alfred-Wegener-Institute for Polar and Marine Research Engineer In Charge

Components

The GPS receiver is installed on the bridge deck. The antenna is installed on the observation deck.


No subdevices found for this sensor.

Position

Origin Description:xyz-position of antenna from Alignment Survey Report RV Heincke (January 2016). Antenna located on observation deck, device located on bridge deck.
X:39.6 m
(Positive X axis is forward and along the centerline of the vessel with X0 at the Stern point of the vessel. )
Y:2.129 m
(Positive Y axis is portside of centerline with Y0 at centerline at the Very stern point of the vessel. )
Z:16.433 m
(Positive Z axis is upwards of basis. Z0 is set to the hydrophone on midship.)

Data logging, storage and archiving

Logged parameters

Parameter Sensor Output Type Unit
latitude latitude degree
longitude longitude degree
altitude distance m
course over ground attitude degree
day date and time day
month date and time month
year date and time year
differential reference station ID index number
GPS quality indicator quality flag number
number of satellites index number
speed over ground speed knots

Central geographical ship's position and time standard

Time synchronization is done by DShip receiving the data for logging. Still, the data itself contain GPS time information

Rawdata storage on board

Data storage in DShip system.

Dship

Uncorrected measurement data.

Device name

DGPS Trimble

Parameters

Course over ground [deg]; DGPS_Debeg.GPGGA.EW; Age of Differential GPS data; Altitude [m]; Course over ground [deg]; Day; DGPS_Trimble.GPGGA.Sentence; DGPS_Trimble.GPVTG.Sentence; DGPS_Trimble.GPZDA.Sentence; Differential reference station ID; EW; Geoidal separation [m]; GPS Quality indicator; Horizontal dilution; Latitude; Local zone hours; Local zone minutes; Longitude; Month; NS; Number of satellites; Speed over ground [kn]; UTC of position; UTC Raw; Year

Data archiving on land

After the cruise the DShip data set can be extracted from https://dms.awi.de.

Documentation

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