Machine control, Takeoff and Drone Data Education and News

A construction worker wearing a high-visibility vest and winter clothing sets up a GPS surveying rover on a pole mounted over a ground control target in a dirt field. The worker is adjusting the equipment while standing on a marked square base, with partially built houses and clear sky in the background.

Ground Control - Principle 1

Where you place your ground control points matters as much as how you measure them. Overhead obstructions, grade changes, and bad surface choices can knock a GCP out of your data entirely. Here's what to look for before you set a target.

Zach Pieper

A square Quantum Land Design ground control target sign with a black-and-white quartered circle pattern lies flat on a wood surface. The sign includes “Quantum Land Design” logos in two corners and is secured with metal grommets.

Intro to Ground Control for Drone Mapping

Ground control points are what tie your drone data to the real world. Skip them and your survey will be off by feet, maybe dozens of feet vertically. This post breaks down the five principles every contractor should know before putting a drone in the air on a construction site.

Zach Pieper

ConExpo Tech Talks

The AEM has put together a great resource for new and experienced gps machine control users a like. They have gathered everything from in-t

Quantum Land Design

Low Light Camera Settings

Your Quantum Flight Pack is a great tool, but like any tool, you need to know the right way to use it. Getting the camera settings right...

Zach Pieper

Drone Topo GCP Location

Watch and learn the thought process that went into placing this Ground Control Point.

Zach Pieper

Featured Posts

Infographic showing 4 GPS site control principles for machine control: use the design engineer's surveyor, surround the site with control points, calibrate to 5 or more points, and trust but verify with daily checks.

Get Your 3D Grading Under Control: 4 Site Control Principles Every GPS Contractor Needs to Know

Poor site control is the number one problem we see from contractors running GPS machine control. Not bad models or broken equipment. Site control, the first step on every single project. We've seen it cost contractors two weeks of production, turn a correct machine control model on a balanced site into a mysterious site export, and force concrete footings to be redone because the control was rotated 2.8 degrees. Every one of those situations was avoidable.

A screenshot from a drone flight planning interface titled “DJI Mavic 3E Flight Planning for Topographic Survey Mapping” shows a mapped area with a green grid overlay and waypoint markers on the left. On the right, advanced settings display sliders for side overlap ratio (80%), frontal overlap ratio (80%), and margin distance. A note emphasizes that 80% overlap provides good photogrammetry results and should not be set below 70% for 3D mapping. A YouTube play button is centered over the image.

Quantum Flight Pack - DJI Mavic 3E Training Hub

If you're running a DJI Mavic 3E on a construction site, this is where to start. These training videos cover flight planning, RTK setup, camera settings, and calibration — everything you need to get clean topo data that works with your GPS machine control system.