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Summary Specification Sheet
The ALTM Gemini Advantage
ALTM Gemini Operational Envelope
• 167 kHz effective laser repetition rate
• Fully automated Continuous Multipulse (CMP) technology,
enabling users to double conventional single-pulse operating
altitudes without having to plan around range gates
• ALTM-NAV Flight Management Software with DEM planning
capability, and real-time swath coverage directly exportable
to Google Earth™
• The latest in tightly-coupled inertial and Virtual Reference
System processing technology, enabling steep turns and
extended baselines
• Powerful Optech LMS lidar pre-processing software with automated
lidar rectification
• Optional integrated digital camera, hyperspectral imager, and
waveform digitizer solutions for multiple data end-products
4500
4000
3500
Altitude (m AGL)
GEMINI
GEMINI
3000
2500
2000
1500
1000
500
0
0
50
Parameter
1064 nm
Horizontal accuracy
2
2
Elevation accuracy
Effective laser repetition rate
Position and orientation system
1/5, 500 x altitude (m AGL)
<5-35 cm; 1 σ
Programmable, 33-167 kHz
POS AV™ AP50 (OEM);
220-channel dual frequency GPS/GNSS/Galileo/L-Band receiver
CMP
TECHNOLOGY
ALTM Gemini
Scan width (FOV)
TM
Programmable; 0-50°
Scan frequency
Sensor scan product
Programmable; 0-70 Hz
1000 maximum
Beam divergence
Dual divergence: 0.25 mrad (1/e) and 0.8 mrad (1/e), nominal
Roll compensation
Range capture
Programmable; ±5° at full FOV
Up to 4 range measurements, including 1st, 2nd, 3rd, and last returns
Intensity capture
Video camera
Image capture
Full waveform capture
Data storage
Power requirements
Dimensions and weight
Operating temperature
Relative humidity
Wide Area
High Altitude
200
150-4000 m AGL, nominal
Laser wavelength
POWERED BY
150
Specification
Operational envelope1
A wide-area, high-altitude airborne lidar
mapping system incorporating the industry’s
only fully-automated Continuous Multipulse
(CMP™) technology system.
100
Laser PRF = Data Collection Rate (kHz)
Up to 4 intensity returns for each pulse, including last (12 bit)
Internal video camera (NTSC or PAL)
Compatible with full Optech camera line (optional)
12-bit IWD-2 Intelligent Waveform Digitizer (optional)
Removable solid state disk SSD (SATA II)
28 V; 900 W; 35 A (peak)
Sensor: 260 mm (w) x 190 mm (I) x 570 mm (h); 23 kg
Control rack: 650 mm (w) x 590 mm (I) x 530 mm (h); 53 kg
-10°C to +35°C (with insulating jacket)
0 – 95% non-condensing
1 10% reflective target
2 Accuracy dependent on selected operational parameters using nominal 50° FOV in standard atmospheric conditions
US FDA 21 CFR 1040.10 and 1040.11; IEC/EN 60825-1
www.optech.com
Optech Incorporated
300 Interchange Way, Vaughan ON, Canada L4K 5Z8
Tel: +1 905 660 0808 Fax: +1 905 660 0829
www.optech.com
© Optech Incorporated. E&OE. Information subject to change without notice. Printed in Canada. 120605
