Phantom 4 RTK

Upgrade your next mapping mission with the Phantom 4 RTK – DJI's most compact and accurate low altitude mapping solution.

  • Description
  • Specs
  • FAQ

Visionary Intelligence. Elevated Accuracy.

Next Generation Mapping

DJI has rethought its drone technology from the ground-up, revolutionizing its systems to achieve a new standard for drone accuracy – offering Phantom 4 RTK customers centimeter-accurate data while requiring fewer ground control points.

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

Key Features

RTK Module

1" CMOS Sensor

GS RTK APP

TimeSync

OcuSync

D-RTK 2 GNSS Mobile Station

Centimeter Level Positioning System


A new RTK module is integrated directly into the Phantom 4 RTK, providing real-time, centimeter-level positioning data for improved absolute accuracy on image metadata. Sitting just beneath the RTK receiver is a redundant GNSS module, installed to maintain flight stability in signal-poor regions such as dense cities. Combining both modules, the Phantom 4 RTK is able to optimize flight safety while ensuring the most precise data is captured for complex surveying, mapping and inspection workflows.

Fit the Phantom 4 RTK to any workflow, with the ability to connect this positioning system to 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).

Gather Accurate Data with TimeSync


To take full advantage of the Phantom 4 RTK’s positioning modules, the new TimeSync system was created to continually align the flight controller, camera and RTK module. Additionally, TimeSync ensures each photo uses the most accurate metadata and fixes the positioning data to the center of the CMOS – optimizing the results from photogrammetric methods and letting the image achieve centimeter-level positioning data.

Precise Imaging System


Capture the best image data with a 1-inch, 20 megapixel CMOS sensor. Mechanical shutter makes mapping missions or regular data capture seamless as the Phantom 4 RTK can move while taking pictures without the risk of rolling shutter blur. Due to the high resolution, the Phantom 4 RTK can achieve a Ground Sample Distance (GSD) of 2.74 cm at 100 meters flight altitude. To ensure each Phantom 4 RTK offers unparalleled accuracy, every single camera lens goes through a rigorous calibration process where radial and tangential lens distortions are measured. The distortion parameters gathered are saved into each image’s metadata, letting post-processing software adjust uniquely for every user.

Purpose-Built Flight Planning Application


A new GS RTK app allows pilots to intelligently control their Phantom 4 RTK, with two planning modes – Photogrammetry and Waypoint Flight – alongside a more traditional flight mode. The planning modes let pilots select the drone’s flight path while adjusting overlap rate, altitude, speed, camera parameters and more, offering an automated mapping or inspection workflow.
The GS RTK app has been built with its users in mind and therefore has a range of features built for specific mapping or inspection workflows. The app has implemented direct loading of KML area files for in-office flight planning, a new shutter priority mode to keep exposure consistent across all photos and a strong wind alarm to warn pilots of adverse conditions.

Mobile SDK Supported


The Phantom 4 RTK is compatible with the DJI Mobile SDK, opening up its functions to automation
and customization through a mobile device.

OcuSync Transmission System


Enjoy stable and reliable HD image and video transmission at distances of up to 7 km, great for mapping larger sites.

*Unobstructed, free of interference, when FCC compliant. Maximum flight range specification is a proxy for radio link strength and resilience. Always fly your drone within visual line of sight unless otherwise permitted.

Seamless Compatibility with
D-RTK 2 Mobile Station


Support your Phantom 4 RTK missions with the D-RTK 2 Mobile Station – providing real-time differential data to the drone and forming an accurate surveying solution. The Mobile Station’s rugged design and OcuSync 2.0 transmission system ensures you can gain centimeter-level accurate data with your Phantom 4 RTK in any condition.

Start Mapping Today

With a built-in flight planning app (GS RTK) and aneasymethod to collect RTK data (RTK Network or D-RTK 2 Mobile Station), pilots have a full solution for any surveying, mapping or inspection workflow – right out of the box.

AIRCRAFT

Takeoff Weight 1391 g
Diagonal Distance 350 mm
Max Service Ceiling Above Sea Level 19685 ft (6000 m)
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 Filght Time Approx. 30 minutes
Operating Temperature Range 32° to 104° F (0° to 40℃)
Operating Frequency 2.400 GHz to 2.483 GHz (Europe, Japan, Korea)
5.725 GHz to 5.850 GHz (United States, China)
Transmission Power (EIRP) 2.4 GHz
CECE (Europe) / MIC (Japan) / KCC (Korea) :< 20 dBm

5.8 GHz
SRRC(China) / FCC(United States)/(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 on-board 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.

MAPPING FUNCTIONS

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 means the aircraft altitude relative to shooting scene (unit: m)
Data 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

VISION SYSTEM

Velocity Range ≤31 mph(50 kph) at 6.6 ft(2 m) above ground with adequate lighting
Altitude Range 0-33 ft(0 - 10 m)
Operating Range 0-33 ft(0 - 10 m)
Obstacle Sensing Range 2-98 ft(0.7-30 m)
FOV 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 Environment Surfaces with clear patterns and adequate lighting(> 15 lux)

CAMERA

Sensor 1" CMOS; Effective pixels: 20M
Lens FOV 84°;8.8 mm / 24 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 Speed 8 - 1/2000 s
Electronic Shutter Speed 8 - 1/8000 s
Max Image Size 4864×3648(4:3);
5472×3648(3:2)
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. Class 10 or UHS-1 rating required Write speed≥15 MB/s
Operating Temperature Range 32° to 104° F (0° to 40℃)

INTELLIGENT FLIGHT BATTERY(PH4-5870MAH-15.2V)

Capacity 5870mAh
Voltage 15.2V
Battery Type LiPo 4S
Energy 89.2 Wh
Net Weight 468 g
Charging Temperature Range 14° to 104℉(-10° to 40℃)
Max charging Power 160W
Capacity 4920mAh
Voltage 7.6V
Battery Type LiPo 2S
Energy 37.39Wh
Operating Temperature -4° to 104℉(-20° to 40℃)

INTELLIGENT BATTERY CHARGING HUB (WCH2)

Input Voltage 17.3 - 26.2 V
Output Voltage and Current 8.7 V,6 A;5 V,2 A
Operating Temperature 41° to 104℉(5° to 40℃)

GNSS

Single-Frequency, High-Sensitivity GNSS Module GPS+BeiDou+Galileo*(Asia);
GPS+GLONASS+Galileo*(other regions)
Frequency Used:
GPS:L1/L2;
GLONASS:L1/L2;
BeiDou:B1/B2;
Galileo*:E1/E5a

First-Fixed Time:< 50 s

Positioning Accuracy: Vertical 1.5 cm + 1 ppm(RMS);
Horizontal 1 cm + 1 ppm(RMS)
1 ppm means the error has a 1mm increase for every 1 km of movement from the aircraft. 
*Available soon

GIMBAL

Stabilization 3-axis (tilt, roll, yaw)
Pitch -90° to +30°
Max Controllable Angular Speed 90°/s
Angular Vibration Range ±0.02°

INFRARED

Obstacle Sensing Range 0.6-23 ft(0.2 - 7 m)
FOV 70°(Horizontal) 
±10°(Vertical)
Measuring Frequency 10 Hz
Operating Environment Surface with diffuse reflection material, and reflectivity> 8%(such as wall,trees, humans, etc.)

REMOTE CONTROLLER

Operating Frequency 2.400 GHz-2.483 GHz(Europe,Japan,Korea)
5.725 GHz-5.850 GHz(United States, China)
Transmission Power (EIRP) 2.4 GHz
CE / MIC / KCC:< 20 dBm

5.8 GHz
SRRC / FCC:< 26 dBm
Max Transmission Distance FCC:4.3 mi(7 km);
SRRC / CE / MIC / KCC:3.1 mi(5 km) (Unobstructed, free of interference)
Power Consumption 16 W(typical value)
Display 5.5 inch screen, 1920×1080, 1000 cd/m², Android System
Memory 4G RAM+16G ROM
Operating Temperature Range 32° to 104° F (0° to 40℃)

INTELLIGENT FLIGHT BATTERY CHARGING HUB

Voltage 17.5 V
Operating Temperature Range 41° to 104℉(5° to 40℃)
Capacity 4920mAh
Voltage 7.6V
Battery Type LiPo 2S
Energy 37.39Wh
Operating Temperature -4° to 104℉(-20° to 40℃)

AC POWER ADAPTER(PH4C160)

Voltage 17.4V
Rated Power 160W
Products
How does the Phantom 4 RTK differ from previous Phantom Series products? While previous Phantom series drones were built around professional photographers and hobbyists, the Phantom 4 RTK was designed for industrial users for high-precision mapping and other data acquisition missions. While the Phantom 4 RTK shares a similar camera and form size, it also adds a RTK positioning module, a new TimeSync system, a purpose-built mapping app and more.
What propellers does the Phantom 4 RTK use? The Phantom 4 RTK uses the same 9450s Quick Release Propellers as the Phantom 4 Pro.
Can I fly the Phantom 4 RTK in other countries or regions? No, the Phantom 4 RTK has specific versions for different countries and/or regions. Users can check the version code on the product packaging or through the GS RTK app (go to Aircraft Information -> Firmware).
Camera
What is difference between the Phantom 4 RTK's camera and the camera on the Phantom 4 Advanced/Pro? While the Phantom 4 RTK and Phantom 4 Pro/Advanced share the same 1-inch, 20 megapixel CMOS sensor, the Phantom 4 RTK has improved the capabilities of the camera for mapping through a new lens distortion recording process. Each Phantom 4 RTK camera goes through a calibration process that measures the distortions of the lens, and records the corresponding OPEN-CV parameters. The camera allows users to output the original images without distortion correction as well as the OPEN-CV distortion parameters in the XMP file for post-processing
Can the ND filter of the Phantom 4 Pro be used on the Phantom 4 RTK? Yes, the ND filters made for the Phantom 4 Pro can also be used for the Phantom 4 RTK.
Does the Phantom 4 RTK camera digital signal processor (DSP) support distortion correction? No, you can enable the distortion correction in the camera but the images will be less precise compared to distortion elimination in post-processing software.
Remote Controller
What’s the different between the remote controller of the Phantom 4 RTK and that of the Phantom 4 Pro? The Phantom 4 RTK's remote controller has multiple changes that add more versatility and features for industrial users. This includes a Micro-SD card slot, a built-in speaker and hot-swappable batteries. Additionally, users can use the remote controller to connect to the internet for Network RTK with a 4G Dongle. Lastly, the new GS RTK App is pre-installed in each remote controller, letting controller start data acquisition missions right out of the box.
Can you control the Phantom 4 RTK with the Phantom 4 Advanced/Pro controllers? No, you cannot control the Phantom 4 RTK with a Phantom 4 Advanced or Pro controller.
How can I switch between FCC and CE modes? FCC and CE mode switching is not available.
How do I bind my remote controller with the Phantom 4 RTK? You can complete the linking through the GS RTK app. Refer to the User Manual for more details.
Video Transmission
What is the video transmission distance of the Phantom 4 RTK? The effective video transmission distance depends on your method of operation (such as the antenna position) and actual flight environment. In an open and unobscured environment, the maximum distance is 7 km when FCC compliant, and 4 km when CE compliant. (2.4GHz).
What should I do if the app sends me the following notification: "the remote controller signal is weak, please adjust the antenna"? This means that improper antenna positioning is likely affecting the video transmission signal, and therefore the quality of the real-time view. You can try to adjust the antennas so the flat sides of the antenna point towards the Phantom 4 RTK.
Can I continue my automated mapping mission if the Phantom 4 RTK loses video transmission signal during its mission? Yes, if the video transmission signal is lost, you can reconnect and continue the mapping mission.
Battery
Can I use my Phantom 4 Pro batteries with the Phantom 4 RTK and vice versa? Yes, the Phantom 4 RTK and Pro batteries are cross compatibe and have the same capacity, meaning flight time won't be effected.
How long does it take to fully charge a Phantom 4 RTK battery? It takes roughly 60 minutes to charge a Phantom 4 RTK battery fully.
How should I take care and store my batteries? Keep the Phantom 4 RTK batteries in a dry place away from water. For long term storage, ensure the battery is charged to 50% or above and discharge every three months to maintain activity.
What does it mean when the battery icon turns yellow in the app? This means the voltage of the battery cell is below 3.62V and should be charged soon.
Can I use Phantom 4 RTK batteries in low temperatures? The battery capacity (and therefore flight time) will sharply decrease in low temperatures (< -10℃). It is recommended to heat the batteries to 20℃ before flight to limit this effect.
Why do batteries start to heat up after long term storage? This is a normal phenomenon. When batteries have been stored for a long time with over 65% of the charge remaining, an automatic discharging procedure is activated to decrease battery level to 65%, during which the batteries will heat up.
POS RTK and Photo POS
What options do I have to reference the positioning data from the Phantom 4 RTK? 1. Connect locally via OcuSync to your D-RTK 2 Mobile Station. (RTCM3.2)<br>
2. Connect remotely via a 4G Dongle to a custom RTK network using a NTRIP account.(RTCM3.2)<br>
3. Connect remotely via a WiFi hotspot to a custom RTK network using a NTRIP account. Not available in Europe.(RTCM3.0/RTCM3.1/RTCM3.2)<br>
What positioning accuracy can the Phantom 4 RTK achieve? The Phantom 4 RTK can achieve 1 cm+1 ppm (horizontal), 1.5 cm + 1 ppm (vertical) accurate data.
What is TimeSync and how does it ensure the positioning accuracy of each image taken on the Phantom 4 RTK? TimeSync continually aligns the flight controller, camera and RTK module, then adjusts the positioning data to the center of the CMOS and records the data in EXIF and XMP format.
What are the differences between PPK and RTK mode? How to use them? RTK and PPK are two different kinematics technologies that reference data in different ways. Although PPK generally has slightly higher positioning accuracy than RTK, both achieve centimeter-level precision. RTK is recommended for users flying in environments that allow for real-time connection via OcuSync or 4G and prefer convenience and efficiency. For users who have no demand on timeliness and/or need to operate in conditions without connectivity, PPK is a better option.
How do I find the XMP information of my Phantom 4 RTK photos? Open the photo in text format and search "XMP" to find this information on each photo.
When I take a photo with the Phantom 4 RTK, where is the location metadata logging the position from? Due to the new TimeSync system, each photo stores the position of the CMOS center in its metadata.
How can I get the compensation value between the antenna phase center and CMOS center? For each photo, the compensation value between the RTK module's antenna phase center and the CMOS center in NED coordinate system is recorded in the timestamp.MRK file under a folder named “survey”.
Software
How do I update the Phantom 4 RTK firmware? The Phantom 4 RTK firmware upgrade process is similar to that of the Phantom 4 Pro. Using the DJI Assistant 2 software, you can update the remote controller and aircraft firmware seperately.<br>
You can also update the drone and remote controller simultaneously through the GS RTK app. First yoyu connect the remote controller to the aircraft with OTG and USB cables, then follow the procedures explained in the remote contoller's GSRTK app.
In what situations are the left/right TOF and infrared sensors active? Currently the left/right TOF and infrared sensors are not active, so please fly with caution.
What apps have mapping or inspection function? Users can use the pre-installed GS RTK app for mapping or inspection missions. Additionally, users can install apps built on DJI's Mobile SDK.
Does the Phantom 4 RTK's return to home logic differ from that of the Phantom 4 Pro? No.The RTH logics in both aircrafts are almost the same.
Are there any limitations to the Phantom 4 RTK's waypoints? Yes, the distance between any two waypoints can not be above 2 km, the total number of waypoints cannot surpass 99 and the entire length of the flight path cannot exceed 15 km.
Can I set waypoints by entering longtitude and latitude values when using Waypoint mode? No.
When importing KML area files with the GS RTK app, what is the maxmum number of boundary points that I can set? Currently the GS RTK app supports up to 99 boundary points through KML files.
Mapping
What formats of differential data does the Phantom 4 RTK support? Currently the Phantom 4 RTK supports RTCM 3.0 data, RTCM 3.1 data, MSM4 and MSM5 data under RTCM3.2.
Are the coordinates measured by the Phantom 4 RTK relative coordinates or absolute coordinates? The coordinates measured by the Phantom 4 RTK are absolute coordinates under the coordinate system chosen by users.
How do I calculate an appropriate flight altitude based on a GSD value? You can refer to the equation H=36*GSD to estimate an appropriate flight altitude. Please note that GSD ground sampling distance) in this equation is measured by centimeters, while H (Height or flight altitude) is measured by meters.
Do images captured by the Phantom 4 RTK store altitude any information? If so, how is this data stored? Elevation and relative altitude (relative to your takeoff point) are stored in photos captured by the Phantom 4 RTK. Absolute altitude can be used for mapping, and relative altitude can be found in the XMP file.
How can I capture oblique photography when using the Phantom 4 RTK? Oblique imagery can be captured while flying in the Photogrammetry mode on the GS RTK app. In the Photogrammetry mode, you can adjust gimbal angle from -90 °to -45° under Camera Settings for your flight plan.You can only set one gimbal angle value at a time, so for sites where you want to capture multiple angles you can plan the same mission and just adjust the camera angle.
Can I create a 3D model or point cloud with third-party software using the images captured by the Phantom 4 RTK? If yes, what is the accuracy of the model created? Yes, you can use third party software to process the Phantom 4 RTK image data and create models, however the accuracy will vary based on the photogrammetric algorithm used. Please refer to the third-party software provider for more information on expected accuracy.
What is the best way to use the Phantom 4 RTK to map corridors? When collecting data over a infrastructure or other narrow corridor, we suggest you set a high overlap ratio, fly the aircraft higher than normal and plan to have at least two flight paths for the whole corridor.
Is the Phantom 4 RTK compatible with third-party base stations? No, you cannot connect third-party base stations to the Phantom 4 RTK or the remote contoller via a radio station. However, you can obtain data from a network RTK server via Ntrip protocol in 4G/Wi-Fi network environment. Satillite observation data can also be saved in the aircraft for users to conduct post processed kinematics (PPK) to complete their tasks.