![]() Not only has the need for data accuracy increased, but so has the need to share that data across an organization, from the field to the office. Crews can survey a site in minutes as opposed to hours or days, without sacrificing accuracy. Drones with GNSS receivers that replace manual rovers are becoming a trusted way to scale the speed and frequency that surveys can be produced. Combining data from both the base and rover provides positioning accuracy within a few centimeters, which is considered survey-grade accuracy. The rover captures its own satellite signals and communicates with the base to correct inaccuracies in positioning caused by atmospheric, satellite orbit, or timing errors. Why do you need a second GNSS receiver? A normal GPS receiver, like the one in your car, will give you a location within about 10 meters of accuracy, which is not considered survey-grade accuracy and cannot be used for civil construction or earthworks. This base does not move and is continuously receiving positioning data from satellites and sending those signals over a network (radio, cellular, or satellite) to a second GNSS receiver called the “rover,” which is manually moved around the site and captures location data. One receiver is known as the “base” (or GPS base station) and is placed over a point with known coordinates. One popular way of capturing accurate measurements is to employ two Global Navigation Satellite Systems ( GNSS) receivers that use signals from satellites to determine an exact position on earth. The accuracy of those measurements is the difference between a profitable job and money-losing one. Quantities are surveyed and compared to original designs, and every subsequent survey, to track site progress and get an accurate picture of changes to surfaces on site. When asked which metric is most important to them, earthworks professionals have overwhelmingly answered “material moved” – literally how much earth is cut, filled, scraped, hauled, dumped, blasted, or paved. How to start your own drone survey program.Advantages of drone surveying: how companies are using drone data.What are the benefits of drone surveying for the mining industry?.What are the benefits of drone surveying for civil construction companies?.RTK and PPK: what are they and how are they different?.Photogrammetry: how drone images become a 3D survey.The role of ground control in drone surveying.Traditional earthworks progress tracking.Want to jump ahead? Here’s where we’re going. We’ll explain how drone data is processed and share examples of how real companies in the civil construction, aggregates, mining, and waste management industries are using drones to increase efficiency, lower survey costs, and reduce safety risks. Here, we’ll take you in-depth on how drone surveying works and explain concepts like photogrammetry, point clouds, orthophotos, and ground control. ![]() Drone-captured survey data, processed correctly, can boost team accountability, communication, and collaboration. ![]() It means tighter planning and budgeting and better contractor management. Having site data that’s up-to-date also means spotting problems before they become expensive or result in rework. With drones becoming affordable, mainstream worksite tools, getting more frequent and more accurate site data is easier than ever. They require minimal special training and education to operate, so you can collect the data as often as you wish-and do it without putting your workers in harm’s way, reducing safety risks. Unmanned aerial vehicles (UAVs) enable faster, less costly surveying without sacrificing accuracy. Drone technology has changed the way the heavy civil and earthworks industries survey their worksites. ![]()
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