You will want to use a camera that can capture as much of the fine details on the ground as possible, allowing the software to recreate these features during 3D modeling. The key to data quality in photogrammetry is the resolution of the camera. Although photogrammetry has limitations, it’s a widely favored option because of how accessible and inexpensive it is.
The technique uses a series of overlapping geotagged photos taken by the drone to infer the dimensions of all the features on the ground. Photogrammetry is the most common technique used for aerial surveying. This is pretty much a standard number for most modern drones. To optimize the time that you spend in the field, you will want a drone that can fly for at least 30 minutes uninterrupted. Thus, there will certainly be a need for the drone to fly back to a designated landing spot so that its batteries can be swapped.Īs you can imagine, landing and deploying the drone multiple times in a single survey will take lots of precious minutes. Even with the speed with which drones can fly, a standard drone can’t finish an entire survey on a single battery cycle. It’s not unusual for mapping surveys to cover areas that are several hectares large. By removing heavy pilot input, errors due to human lapses can be avoided. You will probably need to use another software (such as Litchi) to create these flight paths, which will then be transmitted to the drone’s remote controller. Doing this manually is virtually impossible, so you’re going to need to use a drone that can be programmed for autonomous flight.Īutonomous flight isn’t a feature that you can just activate with any drone. To do this, you must ensure that the drone flies along the same flight path every single time. More often than not, aerial mapping surveys will require that you fly over an area multiple times to ensure data consistency and accuracy. However, they also need a more skilled pilot at the helm. Since their rotors are only responsible for providing propulsion, they can stay airborne far longer on a single battery cycle. The design of fixed-wing drones allows them to generate lift by the mere act of gliding through the air. If you’re surveying an area that only measures a few acres wide, then a multirotor drone may be the practical choice.įixed-wing drones truly shine if you are surveying a few hundred hectares of land. However, they suffer in terms of battery efficiency as they rely on rotors to generate both lift and propulsion. Since they are so common nowadays, they are also much cheaper compared to professional-grade fixed-wing drones. Multirotor drones are much easier to fly and maneuver, mostly because they can hover in place. Choosing one over the other will depend on your budget, the size of your survey area, and your level of expertise as a drone pilot. Fixed-wing or multirotor?Īlthough multirotor drones are more common nowadays, mapping surveys can also benefit from the unique capabilities of fixed-wing drones. These qualities prioritize both the quality of data that the drones can collect as well as the ease with which they can be used for large-scale aerial surveys.
To help us narrow down the wide selection of commercial drones, let’s look at the qualities we should look for in a mapping survey drone. Not all drones are made for the job, so here’s a short list of the best drones for mapping and surveying What to look for in a mapping and surveying drone However, doing a drone survey is going to take more than just buying any standard commercial drone. Not only do drones make surveying jobs easier, but they can also produce data and models that are more accurate.
By using a drone, surveyors no longer need to spend several days or weeks walking through the survey area and taking manual measurements.
Of the many commercial uses of drones, mapping and surveying seem like some with the most natural fit.