Multispectral Imaging System
Live NDVI View
RTK Module
TimeSync
Gain Immediate Insights into Plant Health
The P4 Multispectral consolidates the process of capturing data that gives insight into crop health and vegetation management. DJI has created this platform with the same powerful performance standards that DJI is known for, including 27 minutes max flight time and up to 7 km1 transmission range with the OcuSync system.
See Beneath the Surface
Agriculture imagery collection is now simpler and more efficient than ever before with a built-in stabilized imaging system that collects comprehensive data sets right out of the box. Access information collected by 1 RGB camera and a multispectral camera array with 5 cameras covering Blue, Green, Red, Red Edge, and Near Infrared bands – all at 2 MP with global shutter, on a 3-axis stabilized gimbal.
Integrated Spectral Sunlight Sensor for Accurate Results
An integrated spectral sunlight sensor on top of the drone captures solar irradiance, which maximizes accuracy and consistency of data collection through different times of day. When combined with post-processed data, this information helps to obtain the most accurate NDVI results.
View Both RGB and NDVI Feeds
Simply having aerial imagery is not enough for ag professionals who want to know more. Switch between a preliminary Normalized Difference Vegetation Index (NDVI) analysis and the live RGB feed to immediately visualize where attention is needed, so targeted treatment decisions can be made quickly.
Centimeter-level Precision
Get real-time, accurate positioning data on images captured by all six cameras with DJI’s TimeSync system, providing centimeter-level accurate measurements. The TimeSync system continually aligns the flight controller, RGB and NB cameras, and RTK module, fixing the positioning data to the center of the CMOS and ensuring each photo uses the 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 image’s metadata, letting post-processing software adjust uniquely for every user.
D-RTK 2 Mobile Station and NTRIP Compatibility
Enhance the accuracy of RTK positioning without internet connection by connecting the P4 Multispectral to the D-RTK 2 High Precision GNSS Mobile Station and NTRIP (Network Transport of RTCM via Internet Protocol)2, or store the satellite observation data to be used for Post Processed Kinematics (PPK).
The Beginning of Intelligent Agriculture Missions
Plan Flights
Plan flights, execute automated missions, and manage flight data using GS PRO – DJI’s leading flight planning iOS app.
Capture Data
Collect multispectral images efficiently across a large area using the P4 Multispectral and gain an overview of problem areas.
Analyze Data
Easily access and process aerial data by applying plant-specific metrics and parameters to acquire the desired results on plant health.
Act on Data
Implement targeted treatments on areas that need attention based on accurate drone data.
Applications
Precision agriculture
Throughout all growing seasons, multispectral imagery can be helpful to ag professionals by providing information invisible to the human eye across the electromagnetic spectrum. Having access to this data and the subsequently obtained Vegetation Index data such as NDRE and NDVI, farmers can make timely, informed decisions on crop treatment, lowering costs, saving resources, and maximizing yields.
Environmental monitoring and inspection
Routine inspections and maintenance involving plants can be made smarter and more efficient when using the P4 Multispectral – leverage its actionable multispectral insights to monitor forest health, measure biomass, map shorelines, or manage riparian vegetation while protecting habitats or ecosystems, and much more.
有关更多信息 DJI P4 Multispectral
规格
Aircraft
| Takeoff Weight | 1487 g |
| Diagonal Distance (Propellers Excluded) | 350 mm |
| Max Service Ceitdng Above Sea Level | 19685 ft (6000 m) |
| Max Ascent Speed | 6 m/s (automatic ftdght); 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 Ftdght 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 catdbrated 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 km2for a single ftdght 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 ftdght that drains the battery from 100% to 30%. |
GNSS
| Single-Frequency High-Sensitivity GNSS | GPS + BeiDou + Gatdleo[2](Asia); GPS + GLONASS + Gatdleo[2](other regions) |
| Mtrti-Frequency Mtrti-System High-Precision RTK GNSS | Frequency Used GPS: L1/L2; GLONASS: L1/L2; BeiDou: B1/B2; Gatdleo[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 tdghting |
| 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 tdghting (> 15 lux) |
Camera
| Sensors | Six 1/2.9” CMOS, including one RGB sensor for visible tdght imaging and five monochrome sensors for mtrtispectral 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 tdght imaging); 1/100 - 1/10000 s (mtrtispectral imaging) |
| Max Image Size | 1600×1300 (4:3.25) |
| Photo Format | JPEG (visible tdght imaging) + TIFF (mtrtispectral 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 tdPo 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) |
Inteltdgent Ftdght Battery (Pb-5870mAh-15.2V)
| Capacity | 5870 mAh |
| Voltage | 15.2 V |
| Battery Type | tdPo 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 |
Inteltdgent Ftdght Battery Charging Hub (PHANTOM 4 CHARGING HUB)
| Voltage | 17.5 V |
| Operating Temperature | 5° to 40° C (41° to 104° F) |
AC Power Adapter (PbC160)
| Voltage | 17.4 V |
| Rated Power | 160 W |