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22 May 2017

Over the last few years, as UAV technology has advanced, so too has the capacity for drone maps to be very accurate. When it comes to drone mapping, there are two approaches to consider precision: absolute accuracy and relative accuracy.

Relative (or local) accuracy: Relative accuracy is all about how much a point on a map is exact with respect to different points within that same guide. In other words, if a separation between two point measures 10 inches in this present reality, it additionally measures 10 inches on your map.

Absolute (or global) accuracy: On the other hand, absolute accuracy is how much a point on a map compares to a fixed coordinate framework in this present reality. If a map has an abnormal state of worldwide exactness, the latitude and longitude of a point on that map will compare reasonably precisely with real GPS coordinates.

Your venture objectives will figure out what level of precision you require. A few tasks require a high state of worldwide exactness, while in different cases, relative accuracy will suffice. Surveying each project — the desired yields, where and how the final map will be utilized, what choices will be made based off the information — will help you decide how imperative precision is in any given circumstance. While it's enticing to feel that more prominent exactness is constantly better, the strategies and innovation required to accomplish a great degree precision level can add significant time and cost to your venture and aren't generally fundamental or beneficial for your targets.

Relative accuracy is typically adequate for activities like taking small scale estimations, visually examining progress on development sites and checking fields for harvest health. Basically, at whatever time you have to collect data from within a map itself, yet don't really need to place that map precisely in space. Since drone maps contain a great many focuses, contrasted with the couple of hundred focuses acquired through traditional survey techniques, maps with relative precision give an exceedingly detailed overview of landscape that functions admirably for these sorts of tasks.

Projects for which relative accuracy is usually sufficient:

  • Small-scale measurements — for example, area of a field, length of a fence, width of a stockpile

  • Crop scouting — e.g., assessing damage after a storm, checking crop health

  • Management and oversight — for example, monitoring general progress of a construction site

  • Marketing — e.g., creating a time-lapse or 3D model project to share with prospective clients.

Absolute accuracy becomes noticeably critical when you require a high level of certainty that the latitudinal, longitudinal and elevation estimations are right, for example, when consolidating your guide with other geo-referenced data sets.

Projects for which absolute accuracy is essential:

  • Land title surveys

  • Design documents and records for development projects

  • Overlays of geo-referenced site plans

  • Ecological records

Drone mapping is quite interesting. Geomatics Training Victoria professionals are always ready to fly world class drone technology to complete your mapping or surveying project anywhere on earth. If you want to learn about drone mapping, then enroll yourself with Geomatics Training in Victoria and know about Geomatics specific payloads.


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