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LRF 3013 Integrator Manual
The following Figure 4 illustrates the sampled signal of the receiver diode. This information is used to
calculate the distance.
Figure 4: Pulsed Diode – sampled signal at the receiver diode
2.1.2
Electronics
Vectronix range finding technology is based on semiconductor diode lasers in combination with a multi-
pulse measurement system. This allows pulses with low energy compared to a single high energy pulse.
2.1.3
Ranging Conditions
In general two kind of ranging conditions are described:
Range capability: The possible laser range performance on a beam filling target.
Range performance: The guaranteed range performance on a defined target under defined
conditions.
The range performance depends on visibility, target size and albedo (reflectivity) and is calculated relating
to a certain detection probability e.g. 90%.
Visibility
The visibility is the greatest distance from an observer where a prominent dark object against the sky at
the horizon can be seen and identified by an unaided eye. A high visibility allows the measuring of longer
ranges. Fog, snow, dust, sand, smog and rain reduce the visibility and therefore the range performance of
the LRF module.
Sunlight
Bright back light or high sunlight reflections on the target can reduce the range performance.
Object Size
A typical target size for range performance comparison is the NATO target with a similar size like the front
of a tank. The size of a NATO target is 2.3x2.3 m. Additionally, the LRF performance is defined on a man
size target with 1x1 m size.
Small targets reflect only a part of the laser beam and therefore only allow lower range performance.
A large target allows longer ranges because more of the laser light is returned to the LRF module.
Document number: TML 913655 ver A
Confidential & Proprietary Safran Vectronix AG – All rights reserved
Public: 13.03.2017
page: 9/36
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