RangePRO L-GM20 Laser Rangefinder Module
L-GM20: Laser rangefinder – General Module to 20 Hz rep. rate
Dimensions
| Length | 315mm |
| Width | 301mm |
| Height | 245.9mm |
| Mass | 9.8kg |
Suitability
- OEM module for integration into sensing, surveillance, tracking & weapons stations:
- for ground mobile and fixed installation applications;
- designed to withstand vibration, shock, and extended temperature operation, EM shielded.
Rangefinding
Read-out limits (factory selectable)
Performance*
| Small Craft (2.3×2.3)** | > 12,000 |
| Large Craft (20x20m)** | > 25,000 |
*Standard Clear atmosphere; Extinction Coefficient 0.0448 @ 1,570nm (Modtran 3 V1.5; tropical atmosphere, maritime aerosols, Jan.); sea level visibility = 23.5km.
**Target albedo = 0.3 @ 1,570nm.
Laser Safety
***AS/NZS IEC60825. 2011.
Transmitter
| Laser type | diode pumped Nd:YAG/OPO |
| Wavelength | 1,570 nm |
| Output | nominally 8mJ [to Class 1M limit] |
| Ranging rate | 10Hz typical, up to 20Hz (with duty cycle) |
Detector
- InGaAs with time variant gain
Range Determination
- Signals from the detector are digitally sampled and examined to determine all potential real target returns. An adaptive range threshold compensates for changing noise levels, maximising system capability under varying conditions.
Reference Laser
| Laser Type | laser diode |
| Wavelength | 635nm |
| Output | < 0.5mW |
