Proof-of-Concept and Demo at Abu Dhabi – DJI Matrice 300 RTK with P1

DJI Matrice 300RTK with DJI Zenmuse P1 delivering 0.75cm GSD accuracy in Topographic Survey at Construction of Urban Areas in Abu Dhabi, United Arab Emirates
Prepared by

Sanju Mathew, Sales Manager, Aeromotus Dubai (DJI Enterprise Drone Solution)

Customer

Saif Bin Darwish, Abu Dhabi, United Arab Emirates

Aerial Image of the Area of Interest taken from Google Earth

Purpose of the POC / Demo

To measure the efficiency and productivity from DJI’s Matrice300RTK with DJI Zenmuse P1 (Aerial Survey Camera) and to achieve GSD accuracy of 0.75cm/pixel in creating high accuracy 3D models from the topographic Survey in Zayed City Project in Abu Dhabi.

Summary

Aeromotus conducted a Drone-based Topographic Survey with Saif Bin Darwish at Abu Dhabi at one of their live construction projects, i.e., Zayed City in Abu Dhabi. The purpose of this POC was for the Saif Bin Darwish to achieve 0.75cm GSD accuracy from DJI’s Matrice300RTK with DJI Zenmuse P1 and to compare the productivity, efficiency they have achieved using DJI’s Matrice300RTK with DJI Zenmuse P1 over conventional survey and ground topographic methodologies. Outputs generated from the POC were OrthoMaps, Point Cloud, 3D Model using DJI Terra.

Summary / Findings from POC

Drone/ Camera ModelDJI Matrice300 RTK / DJI Zenmuse P1
Area Covered2.53 Ha
Total Flight Time15 minutes
No of Images Captured543
Total Size of Raw Images

4.9 GB

Processing Time – Ortho + DSM

73 minutes

Processing Time – Point Cloud + 3D Model

313 minutes

Survey Location

The location of the Survey Area is shown on Google Earth below. The KML of the Area of Interest was created using Google Earth Imagery. The total area is 2.53 Hectares.

HSE

As this site is a live construction site, the POC team were provided with a safety briefing for the survey personnel. All survey operations were held away from people and over the space permitted by the GCAA and SBD and in favorable weather conditions. All HSE related measures were fully implemented during the entire survey.

Drones for Survey & Measurement

  • DJI’s Matrice300RTK with DJI Zenmuse P1 with DJI’s DRTK Mobile Station for Matrice Series.

    Methodology

    1. Pre – Survey

    • The mission plans were created using DJI’s DJI Pilot App on DJI Smart Controller.
    • The flight altitude was set to 60m above ground.
    • The side overlap was set to 65% and front overlap was set to 75%.
    • The images were captured with GSD of 0.75cm/pixel.

    2. Realtime Georeferencing at Site

    • Base Station (D-RTK2) was setup at the following coordinates:
      Easting: 257326.241m
      Northing: 2696114.658m
      Elevation: 4.871m
    • Drone Mission take off at 10am.

    Setting up DJI Matrice300RTK with DJI Zenmuse P1

    DJI D-RTK2 Base Station

    3. Data Processing

    • DJI Terra was used to process the images.
    Area Annotation/ Measurement in Terra
    Distance Annotation/Measurement in Terra
    Project Screenshot in DJI Terra

    Summary / Findings from POC

    Camera Model DJI Zenmuse P1
    Area Covered 2.53 Ha
    Total Flight Time 15 minutes
    No of Images Captured

    543

    Total Size of Raw Images 4.9 GB
    Processing Time – Ortho + DSM 73 minutes
    Processing Time – Point Cloud + 3D Model 313 minutes
    Processing Resolution 2D and 3D Reconstruction High
    Data Output formats

    Point Cloud in LAS, 3D Model in OBJ, PLY, OSGB
    Orthomosaic in GeoTIFF, DSM in GeoTIFF

    Results and Data Representation

    1. Orthomosaic
    2. Digital Surface Model
    3. Point Cloud
    4. 3D Model

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