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Topographic Surveys

1 article from the field.

Illustrative topographic contour map with control and check point markers

Topographic Surveys

26 October 2026 · 3 min read

Drone LiDAR Topographic Survey at 265 Riccarton Road: Checking the Accuracy

A drone LiDAR topographic survey of a Christchurch construction site, tied to three surveyed control points and checked against two independent points. Here are the real accuracy numbers, and what they mean.

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