| Brand |
Leica Geosystems |
| type/name of software |
ALS60 Airborne Laser Scanner |
| data of introduction/last update |
September 2008 |
| - weight [kg] & size [cm] of laser system |
38.5kg; 60 L x 37 W x 27 H cm |
| - weight [kg] & size [cm] of control rack |
45.0kg; 62 D x 45 W x 36 H cm |
| - power requirements |
980 W peak @ 28 VDC nominal |
| wavelength [nm] |
1064 nm |
| pulse length [ns] |
5 ns |
| - beam divergence (across/along tr.) [mrad] |
0.22 mr @ 1/e^2 (0.15 mr @ 1/e) |
| - first/last pulse (Y/N) |
Yes (1st, 2nd, 3rd, last) |
| - multiple pulses in air (Y/N) |
Yes (2PiA) |
| - type/class laser |
Class 4 |
| - eyesafe range [m] |
39 m single pulse, unaided eye @ 200 kHz |
| - scanning method[1] |
oscillating mirror |
| - rotation speed of mirror[2] |
up to 100 Hz |
| - pulse frequency (min-max) [Hz] |
20,000 - 200,000 Hz |
| - max. scan angle [deg] |
75 deg. full angle |
| - max. # of recorded echoes/pulse |
4 (1st, 2nd, 3rd, last) |
| - pulse sampling frequency[3] |
N / A |
| - pulse detection method[4] |
Leading edge discriminator @ 50% peak |
| - recording of return signal intensity [y(bits)/n][5] |
Y (8 bits after AGC and laser output adjustment) |
| - GPS system[6] |
NovAtel, L1/L2+GLONASS+SBAS, 54 channels, 20 Hz update raw |
| - GPS precision planimetric/height (2 sigma) [cm] |
~10 cm, depending on constellation configuration |
| - INS system[7] |
Leica IPAS20 DUS5 (200 Hz), NUS5 (500 Hz), CUS6 (200 Hz) |
| - INS precision (roll/pitch/heading) [deg] |
0.005 deg RP/0.008 deg H (DUS5/NUS5), 0.0025 deg RP/0.005 deg H (CUS6) |
| - GPS/INS postprocessing software |
GrafNav + IPAS Pro |
| - Pointing precision (roll/pitch/heading) [deg] |
not normally specified, ~0.006 degrees (R/P), ~0.009 degrees (H) |
| - Range precision (2 sigma) [cm] |
not normally specified, ~3-4 cm |
| - Elevation precision at 1km (2 sigma) [cm] |
14 - 16 cm, assuming 5 cm GPS error, 2 sigma @ 1000 m AGL |
| - Overall planimetric precision (2 sigma) [cm] |
20 - 26 cm, assuming 5 cm GPS error, 2 sigma @ 1000 m AGL |
| Max. # of points/m2 |
91 points/m2 @ 150 km/h, 200 m AGL, 15 degree FOV |
| - Along track point spacing [m][8] |
0.21 m @ nadir @ 150 km/h, depending on FOV |
| - Across track point spacing [m][9] |
0.29 @15 deg FOV, 0.62 m @ 63 deg FOV, both @ 150 km/h and 1000 m AGL, square point spacing @ nadir |
| - Cameras[10] |
Intenal 1280 x 1024 webcam standard, external 39 MP RCD105 optional |
| - Data Storage Facilities[11] |
removable 500 GB drive |
| - Power equipment |
PS56 ground power supply |
| - typical platform[12] |
both |
| - flying heights (min/typical/max) [m] |
200 to 5000 m AGL |
| - max. acquisition duration [hrs] |
18 hours @ maximum pulse rate |
| - air temperature (min-max) [°C] |
0 to 40°C cabin-side temperature |
| - air humidity (min-max) [%] |
0 to 95%, non-condensing |
| - mission planning software |
Leica AeroPlan (system setup planning), Leica FPES (flight planning) |
| - postprocessing software |
Leica ALS Post Processor (point cloud generation), Leica LCam Viewer (webcam image viewer) |
| - proven applications |
- mapping of flood plains, territories, power lines, pipelines, railways and roads; city modelling; foresty; hydrology; biomass determination |
| remarks [max. 25 words][13] |
Available also in Corridor Mapper model. All specifications identical, except maximum flying height limited to 1000 m AGL |
