DJI Mini 4 Pro with TOPODRONE PPK
DJI Mini 4 Pro TOPODRONE PPK surveying drone
A compact system for high-accuracy aerial surveying, photogrammetry and topographic work without the mandatory use of ground control points.
The DJI Mini 4 Pro TOPODRONE PPK combines a foldable DJI Mini 4 Pro drone, its standard 48 MP camera and an integrated dual-frequency TOPODRONE GNSS module. The system delivers 5–6 cm georeferencing accuracy and is suitable for 1:500-scale topographic surveys, orthomosaic production, digital terrain models and measurable 3D models.
The PPK module logs raw satellite data during the flight, while the precise coordinates of the image exposure centres are calculated after landing. The drone does not require a continuous connection to a base station, so the system can be used at remote sites and in areas without mobile network coverage.
System benefits
- 5–6 cm georeferencing accuracy without the mandatory placement of ground control points
- Data suitable for preparing topographic plans at 1:500 scale
- PPK processing after the flight with no correction data transmitted to the drone
- Unicore UM982 multi-frequency GNSS receiver with 1,408 channels
- Raw GNSS data logged at 20 Hz to a dedicated memory card
- Fixed solutions with baselines of up to 25 km
- 48 MP camera with JPEG and DNG (RAW) image capture
- 34 minutes with the standard DJI Intelligent Flight Battery, or 45 minutes with the Intelligent Flight Battery Plus
- Omnidirectional obstacle sensing and DJI O4 video transmission
- TOPODRONE Post Processing Basic software for coordinate calculation and data preparation
Automated mission planning
- WaypointMap — a service for creating automated DJI Mini 4 Pro mapping missions, with free features available.
- Pixpro Waypoints — automated flight planning and operation for photogrammetry, with a free trial and paid plans starting from €5 per month.
How a PPK survey works
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1
Flight planning
The flight path is created in mission-planning software, taking account of altitude, image overlap and the survey area boundaries.
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2
Aerial survey and GNSS data logging
The drone captures aerial imagery while the PPK module simultaneously logs raw satellite observations.
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3
Coordinate post-processing
After the flight, the on-board data are processed together with observations from the base station.
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4
Exporting image exposure centres
The refined coordinates of the image exposure centres are exported to the photogrammetric project to generate an orthomosaic and 3D model.
Independent check points may be used at the site if accuracy verification is required. Actual accuracy depends on the quality of the base-station data, satellite conditions, flight parameters and adherence to the prescribed processing workflow.
Technical specifications
DJI Mini 4 Pro drone
| Drone manufacturer | DJI |
|---|---|
| Country of manufacture | China |
| Camera | 1/1.3-inch CMOS, 48 MP |
| Maximum image size | 8,064 × 6,048 pixels |
| Image formats | JPEG, DNG (RAW) |
| Lens | 24 mm equivalent, f/1.7 aperture |
| Vertical shooting | Supported |
| Maximum flight time | Up to 34 minutes with the standard Intelligent Flight Battery, 45 minutes with the Intelligent Flight Battery Plus |
| Wind resistance | Up to 10.7 m/s |
| Obstacle sensing system | Omnidirectional |
| Video transmission system | DJI O4, up to 1080p/60 fps |
| Maximum transmission range | Up to 20 km under FCC standards; actual range depends on the region, interference and flight conditions |
| Operating temperature | −10 to +40 °C |
TOPODRONE PPK surveying module
| Module manufacturer | TOPODRONE |
|---|---|
| Country of manufacture | Switzerland |
| GNSS receiver | Unicore UM982 |
| Number of channels | 1,408 |
| Data logging rate | 20 Hz |
| Georeferencing accuracy | 5–6 cm |
| Operating mode | PPK, with no connection to a base station required during the flight |
| Maximum distance from the base station | Up to 25 km |
| Data storage | Dedicated memory card |
| Memory card included | 16 GB |
| Antenna | Removable dual-frequency L1/L2 antenna |
| Operating temperature | −10 to +40 °C |
| Software | TOPODRONE Post Processing Basic |
| Coordinate system support | Conversion to local coordinate systems is supported |
| Warranty | 12 months |
Applications
- Topographic surveys at 1:500 scale;
- Photogrammetry, land surveying and mapping;
- Orthomosaic and digital terrain model production;
- Cadastral and engineering surveys;
- Mine surveying and volume calculations;
- Construction inspection and site monitoring;
- Measurable 3D models of structures and sites;
- Surveys of façades and vertical structures.
Package contents
DJI Mini 4 Pro Fly More Combo
- DJI Mini 4 Pro quadcopter — 1
- Remote controller with display — 1
- Intelligent Flight Battery — 3
- Charging hub — 1
- Shoulder bag — 1
- Spare propellers — 3 pairs
- Gimbal protector — 1
- Propeller holder — 1
- Connection and charging cable set.
- Spare screws and tools.
Survey-grade PPK upgrade
- On-board multi-constellation L1/L2 GNSS receiver — 1
- Removable dual-frequency L1/L2 antenna — 1
- Enclosure for integrating the module with the drone — 1
- Connection cable for the drone's circuit board — 1
- 16 GB memory card for GNSS data logging — 1
- TOPODRONE Post Processing Basic software.
- User manual.
The exact package contents may vary between production batches. Please confirm the package contents with your sales representative before ordering.
Warranty
12 months.