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NOAA Datums Videos 2014

Differential correction with NA2011 and the newest epoch of NAD83

See our and Datums Basics and GPS Tutorials for the long-awaited results of months of rigorous testing and peer review

Trimble Positions software has replaced Trimble GPS Analyst in ArcGIS 10.1

ALASKA GPS and GIS users - check out Joel Cusick's Datum and Projections presentation Feb 2013

ArcGIS 10.1 - New and Cool improvements see Presentation from Melita Kennedy, ESRI : Projections and Datums Dec 2012

Home GPS Tutorials Setting the Stage: Trimble CBS and NGS datasheet coordinates
Setting the Stage: Trimble CBS and NGS datasheet coordinates PDF Print E-mail

A. View Trimble CBS coordinates


1. Update Trimble CBS list

2. Select a CORS station near your GPS data

    i.e. GARLIC (GARL), NEVADA (ITRF00(1997)-Derived from IGS08)

3. Click on the Properties tab

4. The Reference Position in ITRF00 epoch 1997 is on the Base Station tab



B. View base station coordinates on NGS datasheets

 

1. Click on the General tab

2. Click on Go To to open the CORS web page

    Site ID should be entered already

 

3. Click on Enter Site ID

4. Click on Coordinates on the left

 

5. Under New Coordinates, click on Position and Velocity

     View Absolute antennae position for L1 Phase Center (not ARP)

 

6. Under Old Coordinates, click on Position and Velocity

    View Relative antennae position for L1 Phase Center (not ARP)

 

7. For reasons discussed later, also on the Old Coordinates Position and Velocity

    sheet, view the relative antennae position for Antennae Reference Position (ARP)

    in NAD83(CORS96)