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Drone surveying · DJI Matrice 4E

A view from the air.
Precision from the ground.

The office has expanded into terrain surveying with a professional mapping drone. We capture large areas, construction sites and inaccessible terrain faster and more completely — with survey-grade accuracy and results ready for the cadastre, design and quantity take-off.

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  • Licensed operator
  • RTK 1 cm + 1 ppm
  • HTRS96/TM

Lawful and safe

We fly legally. And that matters.

The office holds all licences and permits required to operate the drone legally. The market is full of “aerial photographers” without them — and when something goes wrong, the client shares the consequences.

  • Registered operator

    UAS operator registration under EU rules and Croatian regulations.

  • Trained remote pilot

    A remote pilot who has passed the exams for the categories we fly.

  • Planned and authorised flights

    Checking geographical zones and obtaining authorisations where needed — before going on site.

  • Licensed surveyor

    Results tied to the national coordinate system and verified on check points.

From flight to data

One flight. Four layers of truth about the terrain.

  1. 01
    Flight plan

    We define the area, height and image overlap. On site we measure ground control points with GNSS RTK.

  2. 02
    Capture

    The drone autonomously flies the grid and takes hundreds of overlapping images with a mechanical shutter.

  3. 03
    Processing

    Photogrammetry produces a point cloud and a digital terrain model — millions of measured points.

  4. 04
    Delivery

    Orthophoto, DTM, contours and a vector plan in HTRS96/TM — ready for your project.

Equipment

DJI Matrice 4E — a mapping drone

Figures from the manufacturer’s official specification (DJI Enterprise).

4/3"
CMOS wide camera, 20 MP, mechanical shutter
1 cm
+ 1 ppm horizontal RTK positioning accuracy
49min
maximum flight time
1800m
laser rangefinder range
2 × 48MP
medium tele & tele cameras for detail
12m/s
wind resistance

What you get

01

Orthophoto

A geometrically corrected, scaled image for measuring distances and areas.

GeoTIFF · JPG
02

Digital terrain model

DTM and DSM for contours, profiles, slope analysis and design.

GeoTIFF · XYZ
03

Point cloud

Millions of coordinated, coloured points for 3D analysis.

LAS · LAZ
04

3D model

A textured model of buildings, sites or terrain.

OBJ · 3D tiles
05

Volume calculations

Excavations, embankments and stockpiles measured over the whole surface.

PDF report
06

Vector base maps

Survey base maps for designers and the cadastre.

DWG · DXF
Aerial image: river and orchardOrthophoto · sample

Where a drone delivers most

  1. 01Survey base maps for larger developments
  2. 02Construction progress monitoring and documentation
  3. 03Volumes of excavations, embankments and stockpiles
  4. 04Agricultural land and large parcels
  5. 05Infrastructure — roads, canals, utility routes
  6. 06Municipalities and the public sector — spatial data and GIS

Official video

Meet the DJI Matrice 4 Series

Video: DJI Enterprise (YouTube). Loads only after you click.

Insights

Learn more about drone surveying

All articles
15 October 20262 min read

Why your drone surveyor must be licensed — and how to check

Anyone can buy a drone, but commercial capture requires registration, a trained pilot and compliance with the rules. What do you risk by hiring an unlicensed operator?

Read article
1 October 20263 min read

Drone surveying in geodesy: when photogrammetry beats a classic survey

Orthophotos, 3D terrain models, point clouds and volumes — how drone surveying with the DJI Matrice 4E works and when it pays off versus a classic survey.

Read article

FAQ

How accurate is drone surveying?

Accuracy depends on flight height, ground control, terrain and processing. We state it for each project and verify it on independent check points. The drone has an RTK module with 1 cm + 1 ppm horizontal positioning accuracy per the manufacturer’s specification.

Is drone capture legal, and do you need a permit?

Yes — and that is exactly why it matters whom you hire. Our office holds all required licences and permits. Before every flight we check geographical zones and obtain authorisation where needed.

Can a drone replace a classic survey?

Not always. A drone is ideal for larger, open and inaccessible areas. For boundaries under dense vegetation or details next to buildings we combine it with GNSS and a total station.

How quickly do I get results?

It depends on the area and the products required. The flight itself is short; most time goes into processing and quality control. We agree the deadline in advance.

Do you work outside Osijek-Baranja County?

Yes, by arrangement. We most often work in Bilje, Osijek, Baranja and wider Slavonia.