Chiroptera II

CHIROPTERA II™ is an innovative LiDAR system which simultaneously captures the full waveform in both the 35 kHz bathymetric channel and the 500 kHz topographic channel. The system targets the growing need for high accuracy data for environment data and surveying shallow water regions, i.e. survey depth down to 15 meters. The astonishing depth penetration capability K*Dmax =2.2 makes this the ultimate toolf for nearshore and land surveying. The shoreline is seamlessly captured. Included is also the Leica 80 MP RGB camera RCD30.




Features

  • Seamless land to below water LiDAR coverage
  • Best depth penetration among competing systems
  • Full waveform capture in both channels
  • Tools and methods available for kand and seafloor characterization
  • Automatic water refraction correction


System Specification

Laser Characterization
Bathy laser 6) 35 kHz green, full waveform record
Topo laser 6) Up to 500 kHz infrared, with full waveform record option
Operation altitude Bathymetry 400 – 600 m AGL

Topography up to 1600 m AGL
Depth range 1) Dmax = 2.2 / k (~ 1.5 Secchi depth)
Scanner pattern Oblique scanner
Field of view ± 14° front / back, ± 20° left / right
Swath width 70% of AGL
Point density 2) Bathy: 1.5 pts/m2

Topo: > 12 pts/m2
Bathymetric accuracy 2), 3) 0.15 m (2σ)
Topographic accuracy 2), 3), 4), 5) Ranging accuracy: 2 cm (1σ)

Horizontal accuracy: 20 cm (1σ)
Optical Characterization
Q/A camera 5 MP, 2448 x 2050 pixels, 1 frame per second (fps)
Leica RCD30 medium format camera (Optional) 80 MP, 10320 x 7752 pixels, 0.8 fps – RGB & Near-Infrared
Physical & Operation Interface
GNSS/IMU Novatel SPAN with LCI-100 IMU (non-export restricted)
Mission planning Leica MissionPro
Flight control Leica FlightPro
Post-processing Novatel Inertial Explorer – GNSS/IMU processing software

LiDAR Survey StudioTM

Leica FramePro Image processing
Storage capacity Over 8 hours recording in ruggedized removable SSD
Sensor stabilization (Optional) Leica PAV100 Gyro-stabilized Sensor Mount
System weight < 80 kg (complete system)
Operation temperature 0° to + 35°C
Storage temperature –10° to +50°C
Power consumption 18-32 V DC, 2x50A@28 V DC
Internal battery module Battery supports GNSS/IMU unit operation up to 30 min without external power

1) K is the diffuse attenuation coefficient. Depth penetration is valid for the diffuse attenuation coefficient in the interval 0.1 < k < 0.3. Depth penetration is subject to several other parameters aside from the diffuse attenuation coefficient k. For this specification normal sea-state and 15 % sea-bed reflectance has been assumed. 
2) Accuracy and point density stated in the table is acquired @400 m AGL, 60 m/s aircraft speed.
3) The 2σ value represents the 95 % confidence interval, the 1σ value represents
the 68% confidence interval. Typically, the RMSE value is equal to 1σ accuracy value,
or half of 2σ accuracy value.
4) Ranging accuracy here refers to the measurement accuracy of LiDAR,
not including GNSS/IMU error
5) Horizontal accuracy here refers to the pointing accuracy of LiDAR, not including GNSS/IMU error
6) Laser class 4 in accordance with IEC 60825-1 resp. EN 60825-1
7) Specification is subject to change without notice