How does the P4 Multispectral differ from the Phantom 4 RTK?
Both drones feature RTK-enabled, all-in-one platforms. The key difference lies in their cameras: the P4 Multispectral includes an RGB camera plus a 5-camera multispectral array (each 2 MP), while the Phantom 4 RTK has a single 20 MP RGB camera.
What propellers does the P4 Multispectral use?
It uses 9455S Low-Noise Propellers. Phantom 4 Series propellers can also fit but may affect flight performance.
How should I care for the Spectral Sunlight Sensor?
Avoid contact with sharp or hard objects to prevent scratches.
What are the capabilities of the multispectral camera array?
The multispectral system detects light reflectance from different objects through its cameras to calculate vegetation indices like NDVI, helping assess plant health. The sunlight sensor compensates for changing sunlight throughout the day for consistent data.
What spectral bands do the multispectral cameras cover?
What is the focal length of each camera?
Each lens has a focal length of 5.74 mm (equivalent to 40 mm in 35 mm format).
Are the cameras radiometrically calibrated?
Yes, calibration occurs when processing images via DJI GS Pro or DJI Terra’s vegetation index features.
Is image position compensation applied?
Yes, the relative positions of the six cameras’ sensors to the D-RTK antenna center are calibrated and recorded in each image’s metadata.
Have the lenses been corrected for distortion or vignetting?
Original images are not corrected but distortion and vignetting parameters are measured during production and stored in image metadata for post-processing adjustments.
Is TimeSync available for all six cameras?
Yes, all six cameras benefit from the TimeSync system.
Do I need a high-speed SD card?
Yes, refer to the user manual for recommended SD card specifications.
How is consistency ensured across different P4 Multispectral units?
Each drone undergoes standardized calibration for cameras and sensors to minimize variations.
Do images store DN values or reflectance?
Images store Digital Number (DN) values.
Which remote controller works with the P4 Multispectral?
It is compatible only with the SDK Remote Controller included with the drone.
Can other Phantom 4 Series remote controllers be used?
You can pair them but won’t be able to control the P4 Multispectral unless using the correct controller. The P4 Multispectral controller can control the Phantom 4 RTK, but not vice versa.
What is the maximum transmission distance?
Up to 7 km (NCC/FCC) or 5 km (SRRC/CE/MIC/KCC) in interference-free, unobstructed conditions.
What is the transmission resolution?
720p video transmission.
Can the P4 Multispectral battery be used on the Phantom 4 RTK?
Yes.
How long does the battery last?
About 27 minutes per charge.
How long to charge the battery?
Approximately 58 minutes.
How do I update firmware?
Use DJI Assistant 2 for Phantom and follow official instructions.
What apps are available for flight planning and inspection?
DJI GS Pro comes pre-installed for mission planning and execution.
Which map service does GS Pro use?
Apple Maps.
Are there limits on waypoints per mission?
No limit on waypoints, but actions can only be set on up to 99 waypoints per group. Missions with more than 99 waypoints are divided automatically.
Flight limits?
Max altitude: 500 m; min altitude: 1 m.
Flight speed: 1 m/s to 15 m/s.
How to switch between RGB and NDVI live feeds?
Switch in manual mode. It’s recommended to stay in RGB view during missions. JPEG images save automatically based on the camera mode used.
Recommended camera settings for beginners?
Use Auto mode, Average Metering, and enable AE lock.
Does the P4 Multispectral support third-party software?
DJI Mobile SDK support is coming soon.
Which vegetation indices are supported in DJI Terra?
NDVI, GNDVI, NDRE, LCI, and OSAVI (but DJI Terra lacks an index calculator).
What crops can the P4 Multispectral data be used for?
It supports a wide variety of crops and vegetation. Use DJI Terra or third-party software to create vegetation index maps for health monitoring.
Can I run repeatable inspection missions?
Yes, via GS Pro mission planning.
Can I use third-party software to reconstruct maps?
Yes.
How to calculate flight altitude for a desired Ground Sample Distance (GSD)?
GSD = (Flight Height in meters) / 18.9 (cm/pixel). Calculate altitude accordingly based on needed accuracy.
Max mapping area per flight?
Approximately 0.47 km² at 180 m altitude (GSD ~9.52 cm/pixel).
Do waypoints include altitude data?
Photos taken at waypoints record relative altitude (relative to takeoff).
Is the P4 Multispectral compatible with third-party base stations?
No radio connection support, but it can connect to network RTK servers via NTRIP over 4G/Wi-Fi. Satellite data can be saved onboard for post-processed kinematics (PPK).