Establishing control
Provide the agreed coordinate reference for project survey teams.
A common reference / Serving Ontario
GPS/GNSS & Geodetic Control Surveys
Keep site measurements on a consistent reference. Satellite positioning and geodetic control for survey and construction teams.
Understand the service
What are GPS/GNSS control surveys?
GPS and GLONASS are satellite navigation systems within the broader GNSS family. Their observations can be used to position survey points and support a project control network. Grad Surveying offers rover-and-base workflows, RINEX post-processing and control-network support using Leica Infinity. The required reference system, control information and site conditions guide the assignment.
Is this right for you?
When might you need it?
Extending a network
Discuss new points in relation to the existing project control.
Processing observations
Identify the supplied data, intended use and review requirements.
Define the assignment
What can the scope include?
We confirm the survey information and deliverables your assignment needs. The following items guide that discussion.
Reference definition
Confirm the coordinate system, datum and project specification.
Observation plan
Agree the required points, access and field program.
Data processing
Define the rover-base processing and checks required for the assignment.
Control documentation
Specify the information needed by the teams using the control.
Your deliverables: The agreed control coordinates, processed observations or survey data. Specify the coordinate system, datum, units and supporting documentation your project team needs.
From inquiry to handoff
Your survey, step by step
Define the reference
Send the specification and existing control information.
Plan the observations
Discuss points, access and observation conditions.
Observe and process
Complete the agreed field and data-processing work.
Issue the control information
Provide the record in the formats required by your team.
Make the first conversation count
What to have ready
- Site or corridor location
- Existing control and datum details
- Accuracy and coordinate-system requirements
- Required data formats
Missing a document? Start with the address and a short description. We can discuss what else is needed. Please do not send payment or identification documents.
Start Your InquiryBefore you get started
Frequently asked questions
Why does the datum matter?
Coordinates need a common reference before they can be compared or used across teams. Share the project's reference requirements.
Can GPS replace boundary research?
No. Position measurements and legal boundary evidence serve different purposes.
Do you support RINEX processing?
Yes, it is part of our GPS/GLONASS offering. Share the data and project requirements so the appropriate processing scope can be discussed.
Ready for the next step?
Let's discuss your surveying needs.
Share your property location and project requirements. We will confirm the surveying scope, scheduling and site-visit arrangements as part of your quote.