Site Surveys and Analysis

By using drones with high quality cameras and appropriate processing software, we create extremely accurate maps. UAV site surveys are much quicker than a person doing them on the ground, saving time and money.

Common Applications for
Site Surveys and Analysis

site survey of a mine site

  • Producing large 2D or 3D aerial images of an area that are accurate and measureable (distance, area and volume)
  • Documenting progress on a construction project
  • Exporting models into other software for additional analysis and design, like CAD or GIS
  • Planning disaster recovery efforts
  • Mapping an existing site (bike parks as an example) to look for ways to improve safety and/or usability

Photogrammetry is the process of taking overlapping photos to produce 2D and 3D images and models.

What are the deliverables from drone photogrammetry that we provide?

site analysis - orthomosaic


An orthomosaic is one large image made by stitching together smaller images. Orthomosaics created from drone photogrammetry are corrected for lens distortion and camera tilt. Precise measurements can be taken from them.

EXPORT AS: geotiff, jpg, kmz, png

site analysis - point cloud created from drone photogrammetry

Point Clouds

A point cloud is an image made up of many individual points on an object’s surface. Point clouds created from drone photogrammetry have elevation, location and color information embedded in each point. Point clouds have many uses in various industries including 3D modeling and creating topographic maps.

EXPORT AS: las, laz, ply

digital surface models from drone survey - site analysis

Digital Surface Models

Digital surface models show the ground surface, vegetation, and man-made objects. These are useful for project visualization and accurate site analysis measurements.

EXPORT AS: geotiff

Drone Imagery vs. Google Earth

UAV site mapping produces imagery many times more detailed than one sees using google earth. Also, an image captured by Google of the area you need may be out of date. For construction projects, taking aerial photos at various time intervals can keep stakeholders informed and show them how a project is progressing over time.

Planet Zero Gravity will apply CFR 14 part 107 standards to any drone services we provide, and comply with FAA airspace regulations.