DJI Zenmuse L2 - LiDAR and RGB for Aerial Surveying

General L2 Info

• 155×128×176 mm (L×W×H)

• 905±5 g

• 28 W (typical)
  58 W (max.)

• IP54

• Matrice 300 RTK (requires DJI RC Plus)
  Matrice 350 RTK

• -20° to 60° C (-4° to 140° F)

• -20° to 50° C (-4° to 122° F)

System Performance

• 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.
  

• Single return: max. 240,000 pts/s
  Multiple returns: max. 1,200,000 pts/s

• 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.
  

• Reflectivity, Height, Distance, RGB

LiDAR

• 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.
  

• 5

• Non-repetitive scanning pattern, Repetitive scanning pattern

• Repetitive scanning pattern: Horizontal 70°, Vertical 3°
  Non-repetitive scanning pattern: Horizontal 70°, Vertical 75°

• 3 m

• 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.
  

• 905 nm

• Horizontal 4 cm, vertical 12 cm @ 100 m (FWHM)

• 240 kHz

• Class 1 (IEC 60825-1:2014)

• 233.59 nJ

• Effective Aperture: 23.85 mm (equivalent to circular)

• 46.718 W

Inertial Navigation System

• 200 Hz

• ±6 g

• ±300 dps

• 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.
  

• 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.
  

• RTK FIX: 1 cm + 1 ppm

• RTK FIX: 1.5 cm + 1 ppm

RGB Mapping Camera

• 4/3 CMOS, Effective Pixels: 20 MP

• FOV: 84°
  Format Equivalent: 24 mm
  Aperture: f/2.8-f/11
  Focus Points: 1 m to ∞ (with autofocus)

• Mechanical Shutter: 2-1/2000 s
  Electronic Shutter: 2-1/8000 s

• 200000

• 5280×3956 (4:3)

• 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

• H.264
  4K: 3840×2160@30fps
  FHD: 1920×1080 @30fps

• Video: 100-6400
  Photo: 100-6400

• 4K: 85Mbps
  FHD: 30 Mbps

• exFAT

• JPEG/DNG (RAW)

• MP4 (MPEG-4 AVC/H.264)

Gimbal

• 3-axis (tilt, roll, pan)

• 0.01°

• Detachable DJI SKYPORT

• Tilt: -143° to +43°
  Pan: ±105°
  
  * Structural limit, not controllable range.
  

• Tilt: -120° to +30°
  Pan: ±90°

• Follow/Free/Re-center

Data Storage

• Photo/IMU/Point cloud/GNSS/Calibration files

• Real-time modeling data storage

• 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.

• 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

• DJI Terra

• DJI Terra supports exporting point cloud models in the following formats:
  PNTS/LAS/PLY/PCD/S3MB