Control Survey

Control Surveys

Precision reality capture requires a rigorous spatial foundation. 

Naviscan performs high-precision control surveys to ensure all 3D data is anchored to the correct geographic location and compliant with local cadastral requirements.

Technical Framework & Rigorous Quality Control

• Coordinate System: All data is calculated on the Hartebeesthoek94 (WGS84) coordinate system.

• Vertical Datum: High-accuracy height determinations relative to Mean Sea Level (MSL), essential for engineering, drainage analysis, and structural tie-ins.

• High-Precision Instrumentation: Deployment of sub-millimeter Total Stations and multi-constellation GNSS/RTK receivers to establish primary and secondary site control.

• Quality Assurance & Redundancy: We take quality control seriously; redundant observations are performed across the entire scanned point cloud.

This cross-verification process eliminates errors and guarantees the highest level of data integrity.

• Survey Integrity: Established benchmarks serve as the "source of truth" for the NavVis VLX and other scanning sensors, eliminating drift and ensuring long-range spatial consistency.

• Legal Compliance: All control networks are established by Registered Professional Land Surveyors, providing the legal certainty required for large-scale AEC and infrastructure projects.

Primary Site Control

By establishing a robust survey control network and performing rigorous redundant checks, we guarantee that your 10mm-accurate point clouds are perfectly aligned with the South African National Grid.