OPUS: Online Positioning User Service

Upload your data file.


Tie your GPS observation to the National Spatial Reference System.
What is OPUS?     FAQs


* Data file of dual-frequency GPS observations. sample


Antenna type - choosing wrong may degrade your accuracy.

meters above your mark.
Antenna height of your antenna's reference point.


* Email address - your solution will be sent here.

to customize your solution.

Formats Add solution details
Base stations Type in 4-char site IDs, or select from map, any CORS you wish to explicitly include or exclude from your solution Sample

NOTE: the automated selection of base stations has recently improved; this option should now be used only sparingly
Use:          Exclude:
 
  Look up site IDs
CORS map
browse map
State plane
Customize your native SPCS zone
Contribute to a project Enter the project identifier provided by your project manager
My profile Customize OPUS defaults for future solutions
Publish my solution Share your solutions

for data > 15 min. < 2 hrs. for data > 2 hrs. < 48 hrs.


* required fields
We may use your data for internal evaluations of OPUS use, accuracy, or related research.

Sampling Rate
(clickable legend icons)
Non-Operational   Non-Operational Sites
Decommissioned sites   Decomissioned Sites
1 second rate sites   1 sec
5 second rate sites   5 sec
10 second rate sites   10 sec
15 second rate sites   15 sec
30 second rate sites   30 sec
All sites   All Active
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Cursor Lat/Lon :
43.83453 , -53.94726