DJI Zenmuse L2

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DJI Zenmuse L2
Powerful Range, Elevated Precision

DJI Zenmuse L2 is a latest and advanced edition of Lidar camera payload to enterprise series, which is compatible with DJI M350RTK. The Zenmuse L2 is an upgraded version of Zenmuse L1 which offers higher accuracy rate, better detection range, multiple returns with a point cloud rate of 240,000 pts. The Zenmuse L2 helps to retrieve geospatial data more efficiently and precisely. it can be used as turnkey solutions when combined with DJI Terra to create 2D/3D data. The Zenmuse L2 has become the vital tool in the mapping and surveying industry to tackle many challenges faced by surveyors from different industries such as Surveying mapping, Agricultural mapping, forestry management, powerline inspections as well as infrastructure management.

The DJI Zenmuse L2 offers powerful sensor to capture high quality point cloud data which greatly helps to take many critical decisions immediately. which impact in many ways of different industry and department operations. it's a frame based lidar with an increased detection range of 30%, As it supports five return Zenmuse L2 can perform precisely in densely vegetated areas.

  • High Precision: Vertical Accuracy: 4 cm; Horizontal Accuracy: 5 cm 
  • Exceptional Efficiency: 2.5 km2 covered in a single flight 
  • Superior Penetration: Smaller laser spots, denser point clouds
  • Detection Range : 250m @10% reflectivity, 100klx; 450m @50% reflectivity, 0klx
  • 5 Returns
  • Turnkey Solution 
  • Point Cloud LiveView
  • One-Click Processing on DJI Terra

Integrated LiDAR Solution

Supported by its powerful hardware, L2 can allow for a precise scan of complex subjects within an extended range and faster point cloud acquisition. During operations, users can preview, playback, and process point cloud models on-site, with Task Quality Reports generated by DJI Terra, offering a simple, one-stop solution to improve overall efficiency. This enables users to achieve high-precision point cloud results with one-stop post-processing.

  • High-Level Precision: By combining GNSS and a high-accuracy self-developed IMU, this solution achieves 4cm vertical accuracy and 5cm horizontal accuracy
  • Exceptional Efficiency: It’s ready for work as soon as it’s powered on and can collect both geospatial and RGB data from a 2.5km area in a single flight.
  • Intuitive Operation: In conjunction with Matrice 350 RTK and DJI Terra, L2 offers a turnkey solution that is simple to use, lowering the operational threshold.

Frame-Based LiDAR

  • 30% Detection Range Increase: L2 can detect from 250 meters at 10% reflectivity and 100 klx, and up to 450 meters at 50% reflectivity and 0 klx. The typical operational altitude now extends up to 120 meters, notably enhancing operational safety and efficiency.
  • Smaller Laser Spots, Denser Point Clouds: With a reduced spot size of 4×12 cm @100m, only a fifth of that of L1, L2 not only detects smaller objects with more details but can also penetrate denser vegetation, generating more accurate digital elevation models (DEM).
  • Supports 5 Returns: In densely vegetated areas, L2 can capture more ground points beneath the foliage.
  • Effective Point Cloud Rate: 240,000 pts/s: In both single and multiple return modes, L2 can reach a max point cloud emission rate of 240,000 points per second, allowing the acquisition of more point cloud data in a given time frame.
  • Two Scanning Modes: L2 supports two scanning modes, offering flexibility for users based on their task demands. In repetitive scanning mode, L2's LiDAR can achieve more uniform and accurate point clouds while meeting high-precision mapping requirements. In non-repetitive scanning mode, it offers deeper penetration for more structural information, making it suitable for power line inspection, forestry surveying, and other scenarios.
  • Frame-based Design: The frame-based design results in an effective point cloud data rate of up to 100%. Together with a three-axis gimbal, it brings more possibilities to surveying scenarios.

High-Accuracy IMU System

  • Improved Accuracy: The high-accuracy self-developed IMU system, combined with the drone’s RTK positioning system for data fusion during post-processing, gives L2 access to highly accurate absolute position, speed, and attitude information. In addition, the IMU system’s enhanced environmental adaptability improves the operational reliability and precision of L2. Yaw Accuracy: Real-time: 0.2°, post-processing: 0.05°; Pitch/Roll Accuracy: Real-time 0.05°, post-processing 0.025°.
  • No IMU Warm-up: The performance of the IMU system has been significantly enhanced, and it is ready for use the moment it's powered on. And, the accompanying drone is ready to begin tasks immediately once the RTK is in FIX status, delivering an optimized in-the-field experience.

RGB Mapping Camera

4/3 CMOS, Mechanical Shutter: Pixel size has been enlarged to 3.3 μm, and effective pixels now reach 20 MP, resulting in a significant improvement in overall imaging, as well as more enriched true-color point cloud details. The minimum photo interval has been reduced to 0.7 seconds. The mapping camera has a shutter count of up to 200,000 times, further reducing operational costs. When point cloud collection is not needed, the RGB camera can still take photos and videos, or collect images for visible light mapping.

Enhanced Operational Experience

  • Diverse Flight
  • Route Types
  • Point Cloud
  • LiveView
  • Point Cloud Model
  • Playback and Merging
  • Auto-Generated Task
  • Quality Report
  • PPK
  • Solution
  • One-Click Processing
  • on DJI Terra

Application Scenarios

In coordination with DJI Enterprise flight platforms and DJI Terra, Zenmuse L2 can be applied to land surveying and mapping, electricity, forestry, and infrastructure management, as well as other scenarios.

  • Land Surveying and Mapping
  • Electricity management
  • Forestry management
  • Infrastructure management

Order Your Zenmuse L2 Payload Today. Contact Aerosmart Official Dealer for DJI Enterprise.


Zenmuse L2 Product Specifications

General Specifications:

  • Product Name:
    • Zenmuse L2
  • Dimensions:
    • 155×128×176 mm (L×W×H)
  • Weight:
    • 905±5 g
  • Power:
    • 28 W (typical)
    • 58 W (max.)
  • IP Rating:
    • IP54
  • Supported Aircraft:
    • Matrice 300 RTK (requires DJI RC Plus)
    • Matrice 350 RTK
  • Storage Temperature:
    • -20° to 60° C (-4° to 140° F)
  • General Operating Temperature:
    • -20° to 50° C (-4° to 122° F)

System Performance:

  • Detection Range:
    • 450m @50% reflectivity, 0 klx
    • 250m @10% reflectivity, 100 klx
    • Typical data. Measured using a flat subject with a size larger than the laser beam diameter, perpendicular angle of incidence, and an atmospheric visibility of 23 km. In low-light environments, the laser beams can achieve the optimal detection range. If a laser beam hits more than one subject, the total laser transmitter power is split, and the achievable range is reduced. The maximum detection range is 500 m.
  • Point Cloud Rate:
    • Single return: max. 240,000 pts/s
    • Multiple returns: max. 1,200,000 pts/s
  • System Accuracy:
    • Horizontal: 5 cm @ 150 m
    • Vertical: 4 cm @ 150 m
    • Measured under the following conditions in a DJI laboratory environment: Zenmuse L2 mounted on a Matrice 350 RTK and powered up. Using DJI Pilot 2’s Area Route to plan the flight route (with Calibrate IMU enabled). Using repetitive scanning with the RTK in the FIX status. The relative altitude was set to 150 m, flight speed to 15 m/s, gimbal pitch to -90°, and each straight segment of the flight route was less than 1500 m. The field contained objects with obvious angular features, and used exposed hard ground check points that conformed to the diffuse reflection model. DJI Terra was used for post-processing with Optimize Point Cloud Accuracy enabled. Under the same conditions with Optimize Point Cloud Accuracy not enabled, the vertical accuracy is 4 cm and the horizontal accuracy is 8 cm.
  • Real-Time Point Cloud Coloring Coding:
    • Reflectivity, Height, Distance, RGB

LiDAR:

  • Ranging Accuracy (RMS 1σ):
    • 2 cm @ 150 m
    • Measured in an environment of 25° C (77° F) with a subject of 80% reflectivity at a distance of 150 m. The actual environment may differ from the testing environment. The figure listed is for reference only.
  • Maximum Returns Supported:
    • 5
  • Scanning Modes:
    • Non-repetitive scanning pattern, Repetitive scanning pattern
  • FOV:
    • Repetitive scanning pattern: Horizontal 70°, Vertical 3°
    • Non-repetitive scanning pattern: Horizontal 70°, Vertical 75°
  • Minimum Detection Range:
    • 3 m
  • Laser Beam Divergence:
    • Horizontal 0.2 mrad, Vertical 0.6 mrad
    • Measured at full width at half maximum (FWHM) conditions. 0.6 mrad signifies that for every 100m increase in distance, the diameter of the laser beam expands by 6 cm.
  • Laser Wavelength:
    • 905 nm
  • Laser Spot Size:
    • Horizontal 4 cm, vertical 12 cm @ 100 m (FWHM)
  • Laser Pulse Emission Frequency:
    • 240 kHz
  • Laser Safety:
    • Class 1 (IEC 60825-1:2014)
  • Accessible Emission Limit (AEL):
    • 233.59 nJ
  • Reference Aperture:
    • Effective Aperture: 23.85 mm (equivalent to circular)
  • Max Laser Pulse Emission Power Within 5 Nanoseconds:
    • 46.718 W

Inertial Navigation System:

  • IMU Update Frequency:
    • 200 Hz
  • Accelerometer Range:
    • ±6 g
  • Angular Velocity Meter Range:
    • ±300 dps
  • Yaw Accuracy (RMS 1σ):
    • Real-time: 0.2°
    • Post-processing: 0.05°
    • Measured under the following conditions in a DJI laboratory environment: Zenmuse L2 mounted on a Matrice 350 RTK and powered up. Using DJI Pilot 2’s Area Route to plan the flight route (with Calibrate IMU enabled). RTK in the FIX status. The relative altitude was set to 150 m, flight speed to 15 m/s, gimbal pitch to -90°, and each straight segment of the flight route was less than 1500 m.
  • Pitch/Roll Accuracy (RMS 1σ):
    • Real-time: 0.05°
    • Post-processing: 0.025°
    • Measured under the following conditions in a DJI laboratory environment: Zenmuse L2 mounted on a Matrice 350 RTK and powered up. Using DJI Pilot 2’s Area Route to plan the flight route (with Calibrate IMU enabled). RTK in the FIX status. The relative altitude was set to 150 m, flight speed to 15 m/s, gimbal pitch to -90°, and each straight segment of the flight route was less than 1500 m.
  • Horizontal Positioning Accuracy:
    • RTK FIX: 1 cm + 1 ppm
  • Vertical Positioning Accuracy:
    • RTK FIX: 1.5 cm + 1 ppm

RGB Mapping Camera:

  • Sensor:
    • 4/3 CMOS, Effective Pixels: 20 MP
  • Lens:
    • FOV: 84°
    • Format Equivalent: 24 mm
    • Aperture: f/2.8-f/11
    • Focus Points: 1 m to ∞ (with autofocus)
  • Shutter Speed:
    • Mechanical Shutter: 2-1/2000 s
    • Electronic Shutter: 2-1/8000 s
  • Shutter Count:
    • 200000
  • Photo Size:
    • 5280×3956 (4:3)
  • Still Photography Modes:
    • Single shot: 20 MP
    • Timed: 20 MP
    • JPEG Timed Interval: 0.7/1/2/3/5/7/10/15/20/30/60 s
    • RAW/JPEG + RAW Timed Interval: 2/3/5/7/10/15/20/30/60 s
  • Video Codec and Resolution:
    • H.264, H.265
    • 4K: 3840×2160 @30fps
    • FHD: 1920×1080 @30fps
  • ISO:
    • Video: 100-6400
    • Photo: 100-6400
  • Video Bitrate:
    • 4K: 85Mbps
    • FHD: 30 Mbps
  • Supported File System:
    • exFAT
  • Photo Format:
    • JPEG/DNG (RAW)
  • Video Format:
    • MP4 (MPEG-4 AVC/H.264 or HEVC/H.265)

Gimbal:

  • Stabilization System:
    • 3-axis (tilt, roll, pan)
  • Angular Vibration Range:
    • 0.01°
  • Mounting:
    • Detachable DJI SKYPORT
  • Mechanical Range:
    • Tilt: -143° to +43°
    • Pan: ±105°
    • Structural limit, not controllable range.
  • Controllable Range:
    • Tilt: -120° to +30°
    • Pan: ±90°
  • Operation Mode:
    • Follow/Free/Re-center

Data Storage:

  • Raw Data Storage:
    • Photo/IMU/Point cloud/GNSS/Calibration files
  • Point Cloud Data Storage:
    • Real-time modeling data storage
  • Supported microSD Cards:
    • microSD: Sequential writing speed 50 MB/s or above and UHS-I Speed Grade 3 rating or above; Max capacity: 256 GB. Use the recommended microSD cards.
  • Recommended microSD Cards:
    • Lexar 1066x 64GB U3 A2 V30 microSDXC
    • Lexar 1066x 128GB U3 A2 V30 microSDXC
    • Kingston Canvas Go! Plus 128GB U3 A2 V30 microSDXC
    • Lexar 1066x 256GB U3 A2 V30 microSDXC

Post-Processing:

  • Supported Software:
    • DJI Terra
  • Data Format:
    • DJI Terra supports exporting point cloud models in the following formats: PNTS/LAS/PLY/PCD/S3MB
1x Zenmuse L2 
1x microSD Card (128) 
1x Lens Cap 
1x Lens Cleaning Cloth 
1x Carrying Box

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