Control Networks

Ollerhead & Associates Ltd. accurately establishes precise Control Networks that can be extended to accommodate future developments.


Ollerhead & Associates Ltd. has the experience and capability to place and survey high precision horizontal and vertical control monuments for a variety of purposes

Static GNSS methodology and Precise Point Positioning online services are used to provide accurate absolute and relative coordinate reference frameworks.

Through our professional contacts Ollerhead & Associates Ltd. can facilitate the collection of Aerial Photography and Lidar Data.

Control Networks



Ollerhead & Associates Ltd. is proficient in establishing high precision Control Network Surveys for the following applications:

  • Legal Survey Control
  • Construction and Mine Site Control Networks
  • Underground Control Networks
  • Existing Control Networks Updates and Densification
  • Coordinate System Transformations
  • Air Photo Target and Aerial Lidar Control

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