DJI P4 Multispectral Review: A New Step towards Innovation

Wondering if DJI P4 multispectral is worth it? This DJI P4 Multispectral review can help you understand if the DJI P$ multispectral is the right choice for you! Check it out!

The world’s leading DJI Drone Company designed a multispectral imaging drone called the DJI P4 Multispectral designed to gather and analyze agricultural data, as we are moving forward, we need innovative ways to feed our population by forcing intelligence in agriculture industry.

This drone is based on high precision multispectral that lets you see and give a deep observation of agriculture site by generating vegetation index maps and provides you absolute results through integrated spectral sunlight sensor.

This flying tool can monitor and understand vegetation health which a human eye cannot observe. The sensors can alert you about the insects and soil condition which results in increasing the yield of crops and also providing work efficiency to farmers by keeping them updated about the land they manage.

DJI Phantom 4 Multispectral RTK + D-RTK 2 High Precision GNSS + Base  Station Tripod - Fly the Farm

DJI P4 Multispectral: Key Features:

  • Multispectral Imaging system
  • Live NDVI View
  • RTK module
  • TimeSync

If you want a quick overview about design and specs of DJI P4 Multispectral then a spec table is given below with all the necessary information.

DJI P4 Multispectral: Multispectral Tech and Surface Observation:

The DJI P4 Multispectral can easily capture data about the plant health and vegetation management through multispectral technology infused inside the drone within a max flight of 27 minutes with a monitoring range of 7km because of the OcuSync system. Its built-in imaging imaging system can easily capture agriculture images with 1 RGB camera and a multispectral array of camera covered with blue, green, red, red edge and near infrared bands.

DJI P4 Multispectral: Sunlight Sensor:

The sunlight sensor is placed on the top of the DJI P4 to achieve accurate NDVI results, the sensor can capture solar irradiance which increases accuracy and stability of collected data through different times of a day and finally it is combined with post processed data to form vegetation index maps.

DJI P4 Multispectral: RGB and NDVI Dual Monitoring:

This drone can provide us aerial monitoring in two views, we can simply switch between RGB and NDVI (Normalized Difference Vegetation Index) analysis which can deeply observe the land we want to manage through aerial monitoring covering a large area of land and alerting us about where the attention is needed.

DJI P4 Multispectral: Centimeter Level Precision:

The DJI P4 Multispectral TimeSync system provides us real time centimeter-level accurate measurements with the help of all six cameras, the TimeSync technology aligns the flight controller, RGB and NB cameras, and RTK module, fixing the positioning data to the center of CMOS and ensuring each photo is taken by most accurate metadata. All cameras go through a rigorous calibration process where radial and tangential lens distortions are measured. The distortion parameters gathered are saved into each images metadata, letting post-processing software adjust uniquely for every user.

DJI P4 Multispectral: D-RTK 2 Mobile Station and NTRIP Compatibility:

The RTK can be positioned without any internet connection by simply connecting the drone to the D-RTK 2 High Precision GNSS Mobile station and NTRIP (Network Transport of RTCM via Internet Protocol), or store the data to be used by PPK (Post Processed Kinematics).

DJI P4 Multispectral: Design and Specs Table:

The design of the DJI P4 Multispectral is exactly like the standard DJI phantom 4, the phantom 4 has been reviewed widely, and has been given a very positive consensus when it comes to its performance in the air, many call it to be the most easiest drone to fly by DJI, its large size and gracious amount of throttle power help a lot with that, and the extended landing pads do make landing and taking off, two of the hardest things to do quite a breeze.

Design wise, its good that DJI stuck to the tried and trusted design of the phantom 4. It looks professional and comes in a professional grade carry case perfect for work. 

Following are the exact specifications, take straight from DJI.com

Aircraft
Takeoff Weight
1487 g
Diagonal Distance (Propellers Excluded)
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 Flight Time
Approx. 27 minutes
Operating Temperature
0° to 40° C (32° to 104° F)
Operating Frequency
2.4000 GHz to 2.4835 GHz (Europe, Japan, Korea)
5.725 GHz to 5.850 GHz (Other countries/regions)[1]
Transmission Power (EIRP)
2.4 GHz: < 20 dBm (CE / MIC / KCC)
5.8 GHz: < 26 dBm (FCC / SRRC / NCC)
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 Compensation
The relative positions of the centers of the six cameras’ CMOS and the phase center of the onboard D-RTK antenna have been calibrated and are recorded in the EXIF data of each image.
Mapping Functions
Ground Sample Distance (GSD)
(H/18.9) cm/pixel, H indicates the aircraft altitude relative to the area mapped (unit: m)
Rate of Data Collection
Max operating area of approx. 0.63 km2 for a single flight at an altitude of 180 m, i.e., GSD is approx. 9.52 cm/pixel, with a forward overlap rate of 80% and a side overlap ratio of 60%, during a flight that drains the battery from 100% to 30%.
GNSS
Single-Frequency High-Sensitivity GNSS
GPS + BeiDou + Galileo[2] (Asia); GPS + GLONASS + Galileo[2] (other regions)
Multi-Frequency Multi-System High-Precision RTK GNSS
Frequency Used
GPS: L1/L2; GLONASS: L1/L2; BeiDou: B1/B2; Galileo[2]: 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 error with a 1 mm increase over 1 km of movement.
Velocity Accuracy: 0.03 m/s
Gimbal
Controllable Range
Tilt: -90° to +30°
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 Sensory Range
2 – 98 ft (0.7 – 30 m)
Operating Environment
Surfaces with clear patterns and adequate lighting (> 15 lux)
Camera
Sensors
Six 1/2.9” CMOS, including one RGB sensor for visible light imaging and five monochrome sensors for multispectral imaging.
Each Sensor: Effective pixels 2.08 MP (2.12 MP in total)
Filters
Blue (B): 450 nm ± 16 nm; Green (G): 560 nm ± 16 nm; Red (R): 650 nm ± 16 nm; Red edge (RE): 730 nm ± 16 nm; Near-infrared (NIR): 840 nm ± 26 nm
Lenses
FOV (Field of View): 62.7°
Focal Length: 5.74 mm (35 mm format equivalent: 40 mm), autofocus set at ∞
Aperture: f/2.2
RGB Sensor ISO Range
200 – 800
Monochrome Sensor Gain
1 – 8x
Electronic Global Shutter
1/100 – 1/20000 s (visible light imaging); 1/100 – 1/10000 s (multispectral imaging)
Max Image Size
1600×1300 (4:3.25)
Photo Format
JPEG (visible light imaging) + TIFF (multispectral imaging)
Supported File Systems
FAT32 (£ 32 GB); exFAT (> 32 GB)
Supported SD Cards
microSD with a minimum write speed of 15 MB/s. Max Capacity: 128 GB. Class 10 or UHS-1 rating required
Operating Temperature
0° to 40° C (32° to 104° F)
Remote Controller
Operating Frequency
2.4000 GHz to 2.4835 GHz (Europe, Japan, Korea)
5.725 GHz to 5.850 GHz (Other countries/regions)[1]
Transmission Power (EIRP)
2.4 GHz: < 20 dBm (CE / MIC / KCC)
5.8 GHz: < 26 dBm (FCC / SRRC / NCC)
Max Transmission Distance
FCC / NCC: 4.3 mi (7 km)
CE / MIC / KCC / SRRC: 3.1 mi (5 km)(Unobstructed, free of interference)
Built-in Battery
6000 mAh LiPo 2S
Operating Current / Voltage
1.2 A @ 7.4 V
Mobile Device Holder
Tablets and smartphones
Operating Temperature
0° to 40° C (32° to 104° F)
Intelligent Flight Battery (PH4-5870mAh-15.2V)
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)
Charging Temperature
5° to 40° C (41° to 104° F)
Max Charging Power
160 W
Intelligent Flight Battery Charging Hub (PHANTOM 4 CHARGING HUB)
Voltage
17.5 V
Operating Temperature
5° to 40° C (41° to 104° F)
AC Power Adapter (PH4C160)
Voltage
17.4 V
Rated Power
160 W

Conclusion:

Summarizing all the technology and information about this drone definitely makes us wonder that how amazing this flying equipment is which can give so much easiness and efficiency to farmers throughout all growing seasons. Aerial inspection and maintenance involving plants can be made smarter and efficient when using DJI P4 Multispectral drone which results in lowering cost, quick treatment of crops and maximizing yield.

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