Drone Mapping Accuracy – Part II – Real Time Kinematics (RTK)

In an earlier post, we discussed Ground Control Points as a primary method of obtaining survey grade accuracy from drone mapping. The photogrammetry/mapping software (such as Pix4d Pro Mapper) uses these GCP to make adjustments to the project to obtain survey grade accuracy. However, this method requires laying out and precisely geolocating numerous control points (approximately every 1000 to 1500 feet). Depending on the terrain and/or the size of the project, the GCP method could be very impractical, difficult and time consuming. Another, arguably more advanced method, is referred to …
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Components for Drone Mapping

In this article we cover what’s actually needed – both in terms of hardware and software products, as well as the training and other items necessary to generate UAV mapping products. 1. Drone (UAV) – Fixed Wing or Multirotor Multirotors are a great initial platform – they’re less expensive, easier to fly and the smaller datasets (due to the smaller area covered) are faster to process. A DJI Phantom 3 Advanced or Pro makes a great low-cost starter platform, while a Phantom 4 Pro is not significantly more expensive and …
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Drone Mapping Accuracy – Part I – Ground Control Points (GCP)

In the business of UAV mapping, accuracy is everything. As my surveyor partner indicates, “If you don’t have an accurate project, it’s nothing more than a pretty picture…”. Close enough is great if you are playing horseshoes or tossing hand grenades. However, if you are doing UAV mapping, being “close enough” is a waste of your time and your clients’ money. So, how do you obtain the highest amount of accuracy in your drone mapping project? The most common method is to use Ground Control Points. (Another method, Real Time …
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Uses for Drone Mapping

One of the first questions we receive from those new to drone mapping, is “What use is drone mapping to me? – What can I do with drone mapping?” In this article, we’re going to show, at a high level (pun intended) that the UAV mapping field has significantly more capabilities than the typical “Google Earth” type of map… Orthomosaics That being said, an orthomosaic is what is represented in Google Earth. It’s a combination of a multitude (up to thousands) of individual, overlapping nadir (pointed straight down) photos. …
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