DJI Phantom 4 RTK (+ Optional Mobile Station)

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DJI Phantom 4 RTK (+ Optional Mobile Station)

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Please note the global semiconductor chip shortage may affect our future inbound shipments including for the DJI Phantom 4 RTK (+ Optional Mobile Station).
Page updated by Leo W. on October 20, 2021
Current Sale Offer: Get $596 off the total bundle below
quote A very popular machine in 2020 for surveyors because it takes the known dependability of the Phantom 4 Pro, and adds both RTK and PPK capability, all at a very reasonable total cost considering what it can achieve. It is also relatively compact when compared to the larger survey machines from DJI (the Matrice 200 and 600 series). The P4 RTK is available with or without the RTK mobile station, which you can use as a rover. This drone basically presents the beginning of the drone revolution for the surveying industry in general because it can cut the time it takes to do a traditional (non-drone) survey down from 2-3 days to half a day. quote
Leo – DFH Software Engineer

Consider The $150k Instant Asset Write-off Tax Break for your drone purchase, valid till June 30, 2023
Sale is currently on, see pricing in the bundles below
5 good reasons to order with DFH
A $500 govt. rebate is available for this drone for NSW farmers. More info


Getting sub-5cm Positioning Accuracy out of your Phantom 4 RTK.

 RTK (Real Time Kinematic)

The Phantom 4 RTK ‘Mobile Station Combo’ includes a mobile station (or ‘base-station’) which acts as a Continuously Operating Reference Station (CORS) that in many instances delivers roughly 5cm positioning accuracy. This mobile station solution in many cases works very well. Note that it has limited range - For every 1 km increase in distance, the accuracy will be 1 mm less. For example, the horizontal accuracy is 4.3 cm when the receiving end is 4.3 km away from the base station. This RTK solution can deliver patchy results if you fly behind a big enough hill or structure. This is because with RTK, mobile station data is transmitted to the drone in real time ‘on the fly’. So any disruptions to the radio transmission of data (from the mobile station to the drone) can cause problems with your data. Again, this is only a challenge for some use cases - It depends on the environments you intend to fly in the most.  

14 min video: un-boxing the Phantom 4 RTK 'Mobile Station Combo': https://youtu.be/NNLzqAyReRc  

PPK (Post Processed Kinematic)  

With Post Processed Kinematic (PPK), data is logged in the drone and processed after the flight. When used in conjunction a SmartNet (coverage map) or a CORSnet subscription (coverage map), a PPK solution is generally considered somewhat more reliable particularly in areas with hills/structures or areas without mobile phone coverage. PPK also typically provides slightly more accurate photo centre coordinates (up to roughly 3cm positioning accuracy).  

The Phantom 4 RTK has the hardware to capture PPK data - fitted beneath the RTK receiver is a redundant GNSS module. You just need software for processing. We at DFH after a lot of research and inquiry have made a decision to sell and support the KlauPPK software solution because of the many positive reports from the field regarding its practicality, simplicity and effectiveness. This software is a once off fee of $3,890 AUD with no ongoing annual subscription fee (only the once-off fee). So when purchased with the Phantom 4 RTK Basic Package, the price works out to be about the same as the RTK ‘Mobile Station Combo’ as described above. 

6 min video: processing PPK flights from your Phantom 4 RTK using KlauPPK: https://youtu.be/hGPYThQRtfg  

Choice of flight apps​

Use GS Pro If using an iPad

​ https://www.dji.com/au/downloads/djiapp/dji-gs-pro
​ iOS v2.0.15
​ Compatibility: Requires iOS 9.2 or later.
​ Compatible with iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, 9.7-inch iPad Pro, and 9.7-inch iPad Pro Wi-Fi + Cellular.

Use DJI Pilot if using an android device

​ https://www.dji.com/au/downloads/djiapp/dji-pilot
​ Android v2.4.17
​ Requires Android 5.0 or above.
​ Compatible with DJI CrystalSky, Mi Pad 3, Mi Pad 2, Samsung Tab S2, Samsung Tab S3, Huawei M2, Huawei M3, Nexus 9. Huawei Honor 9, Huawei P10, Google Pixel 2. One plus 6, LG G6, OPPO R15, VIVO X21, Nokia 7 plus, Mi Mix 2s, Samsung Galaxy S8, Mi Pad 4, Huawei M6, Huawei M5.

9 min video summarising the app
13 min video covering the main menu

  • Under 2kg - no licence required to make money flying this drone

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    Aircraft

    Takeoff Weight1391 g
    Diagonal Distance350 mm
    Max Service Ceiling Above Sea Level19685 ft (6000 m)
    Max Ascent Speed6 m/s (automatic flight); 5 m/s (manual control)
    Max Descent Speed3 m/s
    Max Speed31 mph (50 kph)(P-mode)
    36 mph (58 kph)(A-mode)
    Max Flight TimeApprox. 30 minutes
    Operating Temperature Range32° to 104° F (0° to 40℃)
    Operating Frequency2.400 GHz to 2.483 GHz (Europe, Japan, Korea)
    5.725 GHz to 5.850 GHz (United States, China)
    Transmission Power (EIRP)2.4 GHz
    CE (Europe) / MIC (Japan) / KCC (Korea) :< 20 dBm

    5.8 GHz
    SRRC(China) / FCC(United States)/NCC(Taiwan,China):< 26 dBm
    Hover Accuracy RangeRTK 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 OffsetThe 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.

    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 EfficiencyMax 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 Range0-33 ft(0 - 10 m)
    Operating Range0-33 ft(0 - 10 m)
    Obstacle Sensing Range2-98 ft(0.7-30 m)
    FOVForward/Rear: 60° (horizontal), ±27° (vertical)
    Downward: 70° (front and rear), 50° (left and right)
    Measuring Frequency Forward/Rear:10 Hz;
    Downward: 20 Hz
    Operating EnvironmentSurfaces with clear patterns and adequate lighting(> 15 lux)

    Camera

    Sensor1" CMOS; Effective pixels: 20 M
    LensFOV 84°;8.8 mm / 24 mm(35 mm format equivalent:24 mm);
    f/2.8 - f/11, auto focus at 1 m - ∞
    ISO RangeVideo:100-3200(Auto)
    100-6400(Manual);

    Photo:100-3200(Auto)
    100-12800(Manual)
    Mechanical Shutter Speed8 - 1/2000 s
    Electronic Shutter Speed8 - 1/8000 s
    Max Image Size4864×3648(4:3);
    5472×3648(3:2)
    Video Recording ModesH.264,4K:3840×2160 30p
    Photo FormatJPEG
    Video FormatMOV
    Supported File SystemsFAT32(≤ 32 GB);
    exFAT(> 32 GB)
    Supported SD CardsMicroSD, 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)

    Capacity5870 mAh
    Voltage15.2 V
    Battery TypeLiPo 4S
    Energy89.2 Wh
    Net Weight468 g
    Charging Temperature Range14° to 104℉(-10° to 40℃)
    Max charging Power160 W

    Intelligent Battery Charing Hub(WCH2)

    Input Voltage17.3 - 26.2 V
    Output Voltage and Current8.7 V,6 A;5 V,2 A
    Operating Temperature41° to 104℉(5° to 40℃)

    SDK Remote Controller

    Operating Frequency2.400 GHz to 2.483 GHz (Europe, Japan, Korea)
    5.725 GHz to 5.850 GHz (Other countries/regions) 
    EIRP2.4 GHz
    CE / MIC / KCC: < 20 dBm

    5.8 GHz
    FCC / SRRC / NCC: < 26 dBm 
    Max Transmission DistanceFCC / NCC: 4.3 mi (7 km);
    CE / MIC / KCC / SRRC: 3.1 mi (5 km)
      (Unobstructed, free of interference) 
    Built-in Battery6000 mAh LiPo 2S 
    Operating Current / Voltage1.2 A @ 7.4 V
    Mobile Device HolderTablets and smartphones 
    Operating Temperature32° to 104° F (0° to 40° C)

    GNSS

    Single-Frequency, High-Sensitivity GNSS ModuleGPS+BeiDou+Galileo(Asia);
    GPS+GLONASS+Galileo(other regions)
    Multi-Frequency Multi-System High-Precision RTK GNSSFrequency 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.

    Gimbal

    Stabilization3-axis (tilt, roll, yaw)
    Pitch-90° to +30°
    Max Controllable Angular Speed90°/s
    Angular Vibration Range±0.02°

    Infrared

    Obstacle Sensing Range0.6-23 ft(0.2 - 7 m)
    FOV70°(Horizontal)
    ±10°(Vertical)
    Measuring Frequency 10 Hz
    Operating EnvironmentSurface with diffuse reflection material, and reflectivity> 8%(such as wall,trees, humans, etc.)

    Remote Controller

    Operating Frequency2.400 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 DistanceFCC:4.3 mi(7 km);
    SRRC / CE / MIC / KCC:3.1 mi(5 km) (Unobstrcted, free of interference)
    Power Consumption16 W(typical value)
    Display5.5 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(PHANTOM 4 CHARING HUB)

    Voltage17.5 V
    Operating Temperature Range41° to 104℉(5° to 40℃)
    Capacity4920 mAh
    Voltage7.6 V
    Battery TypeLiPo 2S
    Energy37.39 Wh
    Operating Temperature-4° to 104℉(-20° to 40℃)

    AC Power Adapter(PH4C160)

    Voltage17.4 V
    Rated Power160 W
    Product
    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.
    The Phantom 4 RTK uses the same 9455s Quick Release Propellers as the Phantom 4 Pro.
    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
    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 undistort parameters. The camera allows users to output the original images without distortion correction as well as the undistort parameters in the XMP file for post-processing
    Yes, the ND filters made for the Phantom 4 Pro can also be used for the Phantom 4 RTK.
    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.
    Each Phantom 4 RTK camera goes through a calibration process that measures the distortions of the lens, and records the corresponding undistort parameters in XMP DewarpData. When the “distortion correction” is switched off, the original image with distortion will be generated. When the “distortion correction” is switched on, the parameters used to eliminate distortion is not the parameters calibrated, but the design parameters of the camera. When eliminating the distortions, it is not done pixel by pixel.
    Remote Controller
    1.Built-in 5.5-inch display, 1080P, up to 1000 nits brightness. You can see the screen in strong sunlight. The controller can work in low temperatures.
    2.Supports hot swappable batteries.
    3.Pre-installed GS RTK App can run Photogrammetry, Waypoint and other mission types.
    4.OcuSync video transmission.
    FCC and CE mode switching is not available.
    No.
    Video Transmission
    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 5 km when CE compliant. (2.4 GHz).
    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.
    Yes, if the video transmission signal is lost, you can reconnect and continue the mapping mission.
    Battery
    Yes, the Phantom 4 RTK and Pro batteries are cross compatible and have the same capacity, meaning flight time won't be effected.
    It takes roughly 60 minutes to fully charge a Phantom 4 RTK battery.
    Batteries should be stored in a dry, ventilated, cool environment, away from fire, high temperature and flammable materials.Do not put the battery in an environment that may cause the battery temperature to rise, such as in the sun, or under the direct sunlight inside your car.Long-term storage should ensure that the amount of electricity is more than 50% but not fully charged. The battery should be charged and discharged to maintain the battery activity every 3 month for long-term storage.
    This means the voltage of the battery cell is low and should be charged soon. Please be cautious when flying under this situation.
    The battery capacity (and therefore flight time) will sharply decrease in low temperatures (< -10℃/14℉). It is recommended to heat the batteries to 20℃/68℉ before flying to limit this effect. For flight safety, the battery cannot be charged when the temperature is below 5℃/41℉ or above 40℃/104℉.
    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.
    Position and Orientation
    1. Connect locally via OcuSync to your D-RTK 2 Mobile Station. (RTCM3.2)
    2. Connect remotely via a 4G Dongle to a custom RTK network using a NTRIP account.(RTCM3.2)
    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)
    The Phantom 4 RTK can achieve 1 cm+1 ppm (horizontal), 1.5 cm + 1 ppm (vertical) accurate data.
    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.
    RTK and PPK are two different kinematics technologies that reference data in different ways. RTK and PPK 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.
    EVENTLOG.bin is a binary format that stores exposure, time stamp and log file.
    PPKRAW.bin is an RTCM3.2 MSM5 format that stores satellite observation data and ephemeris data.
    Rinex.obs is a Rinex file format that is created after transcoding.
    Timestamps.MRK is a ASCII format that stores exposure and time stamp.
    Open the photo in text format and search "XMP" to find this information on each photo.
    Due to the new TimeSync system, each photo stores the position of the CMOS center in its metadata.
    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, which can be found in the Timestamp.MRK file under the "survey" folder.
    There are 2 ways that Cloud PPK Service uses to calculate PPK data: DJI base station and RINEX base station.
    (1)DJI Base Station: Connect DJI D-RTK 2 High-Precision GNSS Mobile Station and the remote controller via a USB cable to upload the PPK data onto the base station. After the server acquires the data from the aircraft and the D-RTK 2 Mobile Station, it will start PPK calculation automatically.
    (2)RINEX Base Station: Convert the satellite observation values received by third-party base stations into standard RINEX format, then import the PPK source data to the remote controller and upload them to the cloud server for PPK calculation.
    You should save the third-party satellite observation data under sd card/third_base/ on the SD card in the remote controller. The PPK results will be stored under SD card/DCIM/SURVEY/(mission file name)/result.csv.
    (1)If the RINEX file contains a field “APPROX POSITION XYZ”, which includes the approximate location of the base station in the ECEF coordinate system, the Cloud PPK Service will be able to analyze the location based on information in the field and convert it into geographic coordinates. These coordinates will be set as the default coordinates for the phase center of the antenna of the base station.
    (2)Users can also manually enter the longitude and latitude information of where the base station is set up, as well as the distance between the bottom of the base station and the antenna phase center (APC). With this information, the Cloud PPK Service will run calculations based on the antenna phase center information entered by the user.
    (3)The Cloud PPK Service can also acquire the location of the antenna phase center through Single Point Positioning (SPP) with RINEX data. These coordinates will be used for PPK calculation.
    The service is available everywhere except in the US, Canada, Hong Kong SAR, and Macau SAR.
    You can find them under /DJI/EXPORT/RTK_SCOUT.
    There are two ways:
    (1) Instantaneous measurement
    (2) Average measurement using 10 values collected during 2 seconds
    (1)For instantaneous measurement: yes, it has to be “FIX”.
    (2)For average measurement: it is recommended that the RTK signal be “FIX”.
    Currently you can only update it via the Phantom 4 RTK Remote Controller (not the SDK Remote Controller).
    When the RTK positioning precision maintenance mode is enabled, and if signals are lost from the RTK base station, positioning precision will decrease slowly from the absolute precision of 1 cm+1 ppm to around 20 cm. The RTK Flag value in the XMP data of the image will be 16, and the RTK status of the remote controller will remain at FIX.
    Software
    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 separately .
    You can also update the drone and remote controller simultaneously through the GS RTK app. First you connect the remote controller to the aircraft with OTG and USB cables, then follow the procedures explained in the remote controller's GS RTK app.
    Currently the left/right TOF and infrared sensors are not active, so please fly with caution.
    You can use the GS RTK app for flight control and plannng, and PC-based mapping software such as DJI Terra for mapping missions. If you purchase the SDK Remote Controller, you can also use DJI GS Pro, DJI Pilot, and a variety of third-party apps developed using DJI' MSDK.
    Mapbox is used to provide map data to the GS RTK app.
    In the GS RTK App: maximum waypoints: 199.
    In DJI Terra: waypoints can be at most 2km apart, and at most 99 waypoints can be set. The total distance of a waypoint mission cannot exceed 40km, in photogrammetry mode the max distance is 100km.
    No.
    Currently the GS RTK app supports up to 199 boundary points, and DJI Terra supports up to 99.
    Photogrammetry 2D, Photogrammetry 3D (Double Grid), Photogrammetry 3D (Multi-oriented), Block Segmentation, and Terrain Awareness Mode missions.
    Yes. Tap the ··· on the upper right corner in Terrain Awareness Mode, and tap the ··· on the sidebar, you can turn off the display there under General Settings.
    Block Segmentation breaks large areas into multiple sets of flight paths, which will help improve efficiency. It is recommended to plan these flights over generally flat areas with little change in elevation for the best results.
    (1)Select Block Segmentation;
    (2)Set the mapping area: manually set the mapping area or import kml files;
    (3)Adjust the grid size and direction;
    (4)Adjust parameters such as camera parameters and overlap rate.
    The flight paths are planned altogether for all regions. Users cannot adjust the overlap rate, height, route direction, and other parameters for each area individually.
    After you finish planning, bind each Phantom 4 RTK with corresponding flight mission. Then, you can start one of the missions by itself or start all missions simultaneously.
    At most 5.
    No. Thanks to the obstacle sensing technology, when two or more Phantom 4 RTK get close to each other, they will slow down or hover automatically. They will only resume the mission when the area is cleared.
    Yes, but only for Waypoint Flight.
    (1)Enter RTK Settings and confirm the RTK status is FIX;
    (2)Select Waypoint Flight, start adding waypoints with RTK enabled, the system will automatically record the absolute altitude of each waypoint;
    (3)Select Absolute Altitude in the Height popup window when you perform the operation.
    No. You can only fly using the default Relative Altitude mode without RTK or if RTK is not “FIX”.
    When the elevation of the takeoff location is different from the elevation of the area being mapped, you can adjust the Relative Height to ensure sufficient overlap rates in the measurement. Please see the attached illustration:
    If the drone takes off from a 50m building marked H1 in the illustration, the area being mapped is marked A, and the expected altitude for aerial data collection is 100m, you can set the Mission Altitude in to 100m, and Relative Height to 50m. Similarly, if the drone takes off from H2 to map Area B, which is a hill with an elevation of 40m, and the expected altitude for aerial data collection is 60m, then set Mission Altitude to be 60m, and Relative Height to be -40m. You can adjust Relative Height in Photogrammetry 2D, Photogrammetry 3D (Double Grid), Photogrammetry 3D (Multi-oriented), Linear Flight Mission, and Block Segmentation missions.
    the Relative Height
    Variable altitude flight paths are useful for taking modeling shots at belts of terrain with great altitude differences, for instance, power transmission lines, roads and rivers with rising and falling topography.
    There are no altitude restrictions between any two waypoints. The actual flight altitude is determined by the altitude limit. There are no angle restrictions.
    Yes. Click on the “KML” icon on the functions menu to select the file. The KML file type must be linear, and the format of the field for absolute altitude in the KML file must be “absolute”.
    It is the distance between the flight plane and the plane between Points A, B and C.
    Yes a flight path can be executed in reverse sequence. After a flight path has been generated from recorded waypoints, click on the reverse sequence button at the bottom of the interface to reverse the waypoint flight sequence.
    They are useful for scenarios involving model elements such as hillsides and building facades. Sloping flight path planning generates flight paths automatically for a sloping surface or facade, and successfully collects the photogrammetric data.
    During a sloping flight path mission, the app interface will display a image transmission window, a map view window and a plan view window. The plan view window is at the bottom-right corner of the interface. During a mission, it is able to display the flight path from a perspective that is vertical to the plane, so as to assist in determining the area to be mapped and positioning the aircraft.
    “Mission distance” and “mission altitude” are both used to adjust the distance between the flight plane and the plane between Points A, B and C. If the slope is steep or completely vertical, you can select the mode of being perpendicular to the target plane, and adjust the distance between the flight plane and the plane between Points A, B and C by setting the “mission distance”; if the slope is relatively flat, you can use the mode of being perpendicular to the horizontal plane, and adjust the distance between the flight plane and the plane between Points A, B and C by setting the “mission altitude.”
    When planning the waypoints for a flight path over the sloping plane between Points A, B and C, pay attention to the area to be mapped based on the default expanded distance from Point C, and ensure there are no flight safety hazards within the default expanded area.
    Mapping
    Currently the Phantom 4 RTK supports RTCM 3.0 data, RTCM 3.1 data, MSM4,MSM5, MSM6 and MSM7 data under RTCM3.2.
    The coordinates measured by the Phantom 4 RTK are absolute coordinates under WGS84.
    You can refer to the equation H=36.5*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. For example, GSD=2.74 cm, when altitude=100 m.
    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.
    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.
    Yes, you can use third-party software to process 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.
    The orthoimages created with the images captured by the Phanton 4 RTK and select reconstruction software have shown an absolute accuracy of roughly 5 cm, while the accuracy required in 1:500 scale aerial triangulation is less than 30 cm. This means the Phantom 4 RTK's accuracy meets the requirements of 1:500 scale aerial maps.
    No, you cannot connect third-party base stations to the Phantom 4 RTK or the remote controller via a radio station. However, you can obtain data from a network RTK server via Ntrip protocol in 4G/Wi-Fi network environment. Satellite observation data can also be saved in the aircraft for users to conduct post processed kinematics (PPK) to complete their tasks.
    Possible causes include:
    (1)The GCP is set in a different coordinate system or height datum from that of the Phantom 4 RTK’s position. Please make sure they are in the same coordinate system.
    (2)The Phantom 4 RTK’s RTK status is not “FIX”. Ensure that the RTK status is “FIX” when collecting data.
    (3)The internal camera parameters used by the post processing software are not accurate.
    “Altitude Optimization” is already set by default in the parameter settings for the “2D Photogrammetry” and “Block Segmentation” planning modes. After this function is enabled, the Phantom 4 RTK will return to the center of the mapped area after completing the flight path, and gather images of the sloping features to improve altitude precision. This function is only applicable to the “2D Photogrammetry” and “Block Segmentation” planning modes.


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    1 x Extra Battery
    (2 In Box + 1 Extra)   
    $289 $115.9 $173 off
    128 GB
    1 x 128GB SanDisk Extreme Pro U3 A2 MicroSD card   
    $55 $33 $22 off
    X 6
    2 x Extra Pairs Propellers
    (4 pairs in box + 2 extra pairs)   
    $36 $14.9 $21 off
    1 x DJI Phantom 4 Pro Hard Case
    More photos here   
    $499 $279 $220 off
    1 x Free Delivery: Fast & Secure   
    $42.7 Free
    1 x DJI's Standard Refund and Replacement Policy   
    Included
    1 x $100 bonus credit for receiving customer job inquiries via DFH subscription   
    $100 Free
    1 x ULANZI DR-01 Super-Bright LED Drone Beacon Light. Get 4.8km visibility, relax & focus on getting the best shots. No wiring (just Velcro and go)   
    $31.9 $13.9 $18 off
    Mobile Station Combo SDK
    $18,398 $16,413 $1,985 OFF
    Customise Package
    1 x DJI Phantom 4 RTK (SDK)
    Factory Sealed Box - All Standard DJI Inclusions   
    $14,299
    X 6
    4 x Extra Batteries
    (2 In Box + 4 Extra)   
    $1,156 $462.9 $693 off
    128 GB
    1 x 128GB SanDisk Extreme Pro U3 A2 MicroSD card   
    $55 $33 $22 off
    X 6
    2 x Extra Pairs Propellers
    (4 pairs in box + 2 extra pairs)   
    $36 $14.9 $21 off
    HPRC Hard Case – Phantom 4 RTK + Mobile Station (PHA4RTKGS2780W01)   
    $2,320 $1,392 $928 off
    1 x Power Kit for additional charging hub (1 x Power adaptor P4 series + 1 x Power cable, 2pin, mains to charger)
    $99 $72 $27 off
    1 x Extra DJI Charging Hub
    (1 In Box + One Extra).   
    $159 $125.5 $33 off
    1 x D-RTK 2 Mobile Station (w/tripod). All Standard Inclusions   
    Included
    1 x Free Delivery: Fast & Secure   
    $42.7 Free
    1 x DJI's Standard Refund and Replacement Policy   
    Included
    1 x $200 bonus credit for receiving customer job inquiries via DFH subscription   
    $200 Free
    1 x ULANZI DR-01 Super-Bright LED Drone Beacon Light. Get 4.8km visibility, relax & focus on getting the best shots. No wiring (just Velcro and go)   
    $31.9 $13.9 $18 off
     Mobile Station Combo
    $19,098 $17,113 $1,985 OFF
    Customise Package
    1 x DJI Phantom 4 RTK
    Factory Sealed Box - All Standard DJI Inclusions   
    $14,999
    X 6
    4 x Extra Batteries
    (2 In Box + 4 Extra)   
    $1,156 $462.9 $693 off
    128 GB
    1 x 128GB SanDisk Extreme Pro U3 A2 MicroSD card   
    $55 $33 $22 off
    X 6
    2 x Extra Pairs Propellers
    (4 pairs in box + 2 extra pairs)   
    $36 $14.9 $21 off
    HPRC Hard Case – Phantom 4 RTK + Mobile Station (PHA4RTKGS2780W01)   
    $2,320 $1,392 $928 off
    1 x Power Kit for additional charging hub (1 x Power adaptor P4 series + 1 x Power cable, 2pin, mains to charger)
    $99 $72 $27 off
    1 x Extra DJI Charging Hub
    (1 In Box + One Extra).   
    $159 $125.5 $33 off
    1 x D-RTK 2 Mobile Station (w/tripod). All Standard Inclusions   
    Included
    1 x Free Delivery: Fast & Secure   
    $42.7 Free
    1 x DJI's Standard Refund and Replacement Policy   
    Included
    1 x $200 bonus credit for receiving customer job inquiries via DFH subscription   
    $200 Free
    1 x ULANZI DR-01 Super-Bright LED Drone Beacon Light. Get 4.8km visibility, relax & focus on getting the best shots. No wiring (just Velcro and go)   
    $31.9 $13.9 $18 off
    Frequently Bought Together
    KlauPPK (3rd party mapping software)   
    $4,000 $3,790 $210 off
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    DJI Terra (DJI's mapping software) (item images)   
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    DJI Care Enterprise Basic. Two replacements are offered if you crash. See DJI’s official webpage for full details   
    $935 $869 $66 off
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    Tutorial Video: Drone Inspections Masterclass
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    $259 $239 $20 off
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    EcoFlow DELTA Power Station   
    $2,399 $2,299 $100 off
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    HPRC Hard Case for DJI D-RTK 2 Mobile Station and Tripod   
    $1,475 $1,329 $146 off
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    $3,000 $2,970 $30 off
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