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DJI Phantom 4 RTK

RTK Accuracy in a Phantom 4 Pro. Suitable for Enterprise Surveying.
Code: dji-phantom-4-rtk
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Phantom 4 RTK - Next Generation Accuracy

The ultimate mapping solution for enterprise.

The Phantom 4 Pro RTK is a mapping drone capable of seriously accurate data collection.

Most people are already familiar with the Phantom range of drones. The low barrier to entry makes the Phantom 4 Pro RTK version even more attractive than existing solutions.

There's also a lower price point, new dedicated app and existing ecosystem of accessories.

In addition - the Phantom 4 RTK supports DJI's Mobile SDK - meaning functions are open to further automation and customisation through a mobile device.

Enquire now with Heliguy - an authorised DJI Enterprise retailer.

We can help you understand how the Phantom 4 RTK could benefit your organisation, and give you guidance on what kind of configuration you'll need for any given application.

Phantom 4 RTK Accuracy

Phantom 4 RTK Accuracy

The DJI Phantom 4 Pro RTK can produce extremely accurate data.

This custom built quadcopter is crafted from the ground up with accuracy in mind.

This results in:

  • 1cm+1ppm RTK Horizontal Positioning Accuracy
  • 1.5cm+1ppm RTK Vertical Positioning Accuracy
  • 5cm Absolute Horizontal Accuracy of Photogrammetric Models

This is on par with some of the most advanced equipment available, but in a much easier to use, lower priced, compact and more reliable package.

The new technology in the Phantom 4 RTK means that fewer ground points are required to achieve the same high level of accuracy.

How is the RTK used on the Phantom 4 RTK?

The new RTK module, sitting on top of the existing Phantom 4 quadcopter body, collects centimeter-level positioning data in real-time.

Extremely accurate positional data is then added to image metadata.

An additional redundant GNSS module ensures that the Phantom 4 RTK will remain stable in flight regardless of the conditions.

The combination of these modules make for accurate data collection for a range of mapping, surveying or inspection workflows.

If you need more flexibility, the Phantom 4 RTK can also be used in conjunction with the D-RTK 2 Mobile Station, NTRIP (Network Transport of RTCM via Internet Protocol) using a 4G dongle or WiFi hotspot, or store the satellite observation data to be used for Post Processed Kinematics (PPK).

Phantom 4 RTK Module
Phantom 4 RTK Surveying a Building Site

New TimeSync feature on Phantom 4 RTK

DJI have created a new TimeSync system.

The purpose of this system is to make sure that all users can take full advantage of the Phantom 4 RTK's power.

It continually aligns the flight controller, camera and RTK module during flight.

Each photo that is taken uses the most accurate fixed positioning data at the center of the 1" CMOS sensor on the Phantom 4 Pro RTK.

Phantom 4 RTK Image Capture

The camera is the same as the Phantom 4 Pro, a 1" CMOS sensor which captures incredible detail.

This high resolution camera allows the Phantom 4 Pro RTK to achieve a Ground Sample Distance (GSD) of 2.74 cm at 100 meters flight altitude.

DJI rigorously calibrate each camera before dispatch, to ensure that your Phantom 4 RTK will collect only the most accurate images.

The unique distortion parameters for the individual camera or image are also saved into image metadata - allowing you to take accuracy even further in post processing.

Phantom 4 RTK Image Capture
Phantom 4 RTK New Application for Automatic Flight Planning

New Flight Planning Application for Phantom 4 RTK

In addition to the new hardware, there's a new GS RTK app being released.

This gives pilots intelligent control over their Phantom 4 RTK unit in two different modes, Photogrammetry and Waypoint Flight, in addition to the usual flight modes.

These planning functions let you select a flight path, overlap rate, camera parameters, speed, altitude and more.

This gives you complete control to ensure you're capturing the most accurate data for your workflow at any given time.

The automation makes even the most complex of surveying missions simple.

Other features of the app include support for directly loading KML area files, a new shutter priority mode for consistent exposures and strong wind alarms to prevent the risk of reduced data quality during a mission.

Changes to Phantom 4 Pro RTK Remote Control

The remote controller for the Phantom 4 RTK has also had some additional features.

It's based on the Phantom 4 Pro+ remote with a built in screen.

In addition however, the following improvements have been made:

  • Pre-installed GS RTK application.
  • Built-in Micro-SD card slot.
  • Built-in speaker.
  • Hot-swappable batteries.
  • Can be used to connect to the internet using a 4G dongle.
DJI Phantom 4 RTK Remote Control

Phantom 4 RTK FAQs

What propellers does the Phantom 4 RTK use?
The same 9450S Quick Release propellers as the Phantom 4 Pro.

What differential data formats are available from the Phantom 4 RTK's images?
Currently the Phantom 4 RTK supports RTCM 3.0 data, RTCM 3.1 data, MSM4 and MSM5 data under RTCM3.2.

How is camera distortion information stored?
Each Phantom 4 RTK camera goes through an advanced calibration process. OPEN-CV parameters are recorded in XMP files to ensure accuracy right down to the individual camera used to capture the imagery in question.

Are there any limitations to using waypoints with the Phantom 4 RTK?
There are some small restrictions. The distance between any two waypoints cannot be more than 2km. No more than 99 waypoints can be used in one mission and the total flight path cannot exceed 15km in length.

Phantom 4 RTK Specifications

Please see the full specs of the DJI Phantom 4 Pro RTK system below.

Phantom 4 RTK Aircraft Specs

Weight with Battery and Propellers Fitted

1391 g

Max Service Ceiling Above Sea Level

6000 m
(19685 ft)

Max Ascent Speed

6 m/s (automatic flight)
5 m/s (manual control)

Max Descent Speed

3 m/s

Max Speed

31 mph (50 kph) (P-mode)
36 mph (58 kph) (A-mode)

Max Flight Time

Approximately 30 minutes

Operating Temperature

0° to 40° C
(0° to 40° C)

Operating Frequency

2.400 GHz to 2.483 GHz (Europe, Japan, Korea)
5.725 GHz to 5.850 GHz (United States, China)

EIRP

2.4 GHz
CE (Europe) / MIC (Japan) / KCC (Korea): < 20 dBm

5.8 GHz
FCC (United States) / SRRC (Mainland China) / NCC (Taiwan, China): < 26 dBm

Hover Accuracy Range

RTK enabled and functioning properly:
Vertical: ±0.1 m; Horizontal: ±0.1 m

RTK disabled:
Vertical: ±0.1 m (with vision positioning); ±0.5 m (with GNSS positioning)
Horizontal: ±0.3 m (with vision positioning); ±1.5 m (with GNSS positioning)

Image Position Offset

The position of the camera center is relative to the phase center of the onboard D-RTK antenna under the aircraft body’s axis: (36, 0, and 192 mm) already applied to the image coordinates in Exif data. The positive x, y, and z axes of the aircraft body point to the forward, rightward, and downward of the aircraft, respectively.

GNSS Module Specs

Single-Frequency High-Sensitivity GNSS

GPS + BeiDou + Galileo* (Asia); GPS + GLONASS + Galileo* (other regions)

Multi-Frequency Multi-System High-Precision RTK GNSS

Frequency Used
GPS: L1/L2; GLONASS: L1/L2; BeiDou: B1/B2; Galileo*: E1/E5
First-Fixed Time: < 50 s
Positioning Accuracy: Vertical 1.5 cm + 1 ppm (RMS); Horizontal 1 cm + 1 ppm (RMS)
1 ppm indicates an error with a 1 mm increase over 1 km of movement
Velocity Accuracy: 0.03 m/s

Mapping Functions Specifications

Mapping Accuracy

Mapping accuracy meets the requirements of the ASPRS Accuracy Standards for Digital Orthophotos Class III.

The actual accuracy depends on surrounding lighting and patterns, aircraft altitude, mapping software used, and other factors when shooting.

Ground Sample Distance (GSD)

(H/36.5) cm/pixel, H indicates the aircraft altitude relative to the shooting scene (unit: m)

Acquisition Efficiency

Max operating area of approx. 1 km2 for a single flight (at an altitude of 182 m, i.e., GSD is approx. 5 cm/pixel, meeting the requirements of the ASPRS Accuracy Standards for Digital Orthophotos Class III).

Phantom 4 RTK Gimbal Specifications

Stabilization

3-axis (pitch, roll, yaw)

Controllable Range

Pitch: -90° to +30°

Max Controllable Angular Speed

Pitch: 90°/s

Angular Vibration Range

±0.02°

Vision System

Velocity Range

≤ 31 mph (50 kph) at 6.6 ft (2 m) above ground with adequate lighting

Altitude Range

0 - 10 m
(0 - 33 ft)

Operating Range

0 - 10 m
(0 - 33 ft)

Obstacle Sensory Range

0.7 - 30 m
(2 - 98 ft)

Field of View

Forward/Rear: 60° (horizontal), ±27° (vertical)
Downward: 70° (front and rear), 50° (left and right)

Measuring Frequency

Forward/Rear: 10 Hz
Downward: 20 Hz

Operating Environmental Conditions

Surfaces with clear patterns and adequate lighting (> 15 lux)

Infrared Sensing System

Obstacle Sensory Range

0.2 - 7 m
(0.6 - 23 ft )

Field of View

70°(Horizontal), ±10°(Vertical)

Measuring Frequency

10 Hz

Operating Environment

Surface with diffuse reflection material, and reflectivity > 8% (such as wall, trees, humans, etc.)

Phantom 4 RTK Camera Specs

Sensor

1’’ CMOS; Effective pixels: 20M

Lens Specs

FOV (Field of View) 84°, 8.8 mm (35 mm format equivalent: 24 mm), f/2.8 - f/11, auto focus at 1 m - ∞

ISO Range

Video: 100 - 3200 (Auto), 100 - 6400 (Manual)
Photo: 100 - 3200 (Auto), 100 - 12800 (Manual)

Mechanical Shutter

8 - 1/2000 s

Electronic Shutter

8 - 1/8000 s

Max Image Size

4864×3648 (4:3)
5472×3648 (3:2)

Still Photography Modes

Single shot

Video Recording Modes

H.264, 4K: 3840×2160 30p

Photo Format

JPEG

Video Format

MOV

Supported File Systems

FAT32 (≤ 32 GB)
exFAT (> 32 GB)

Supported SD Cards

microSD
Max Capacity: 128 GB.
Write speed ≥15MB/s.
Class 10 or UHS-1 rating required

Operating Temperature

0° to 40° C
(32° to 104° F)

Phantom 4 RTK Remote Controller Specs

Operating Frequency

2.400 GHz to 2.483 GHz (Europe, Japan, Korea)
5.725 GHz to 5.850 GHz (United States, China)

EIRP

2.4 GHz
CE / MIC / KCC: < 20 dBm
5.8 GHz
FCC / SRRC / NCC: < 26 dBm

Max Transmission Distance

FCC / NCC: 4.3 mi (7 km)
CE / MIC / KCC / SRRC: 3.1 mi (5 km)
(Unobstructed, free of interference)

Power Consumption

16 W (typical value)

Display Device

5.5 inch screen
1920×1080
1000 cd/m2
Android system
4G RAM + 16G ROM

Operating Temperature

0° to 40° C
(32° to 104° F)

Phantom 4 RTK Battery Specifications

Capacity

5870 mAh

Voltage

15.2 V

Battery Type

LiPo 4S

Energy

89.2 Wh

Net Weight

468 g

Operating Temperature

-10° to 40° C
(14° to 104° F)

Max Charging Power

160 W

Charging Hub Specs

Voltage

17.5 V

Operating Temperature

5° to 40° C
(41° to 104° F)

Remote Controller Intelligent Battery (WB37)

Capacity

4920 mAh

Voltage

7.6 V

Battery Type

LiPo 2S

Energy

37.39 Wh

Operating Temperature

-20° to 40° C
(-4° to 104° F)

Intelligent Battery Charging Hub Specification

Input Voltage

17.3 to 26.2 V

Output Voltage and Current

8.7 V, 6 A; 5 V, 2 A

Operating Temperature

5° to 40° C
(41° to 104° F)

AC Power Adapter Specs

Voltage

17.4 V

Rated Power

160 W
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slight hiccup with delivery but easily resolved

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Thanks for your help. I think I will design one. I did see one that wraps around the base of the handle and has the tripod screw thread offset to the side. I think I can do better, a hinged bottom plate, with a tripod screw hole in the center and a clasp that inserts into the handle release slot.

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