Operating Instructions
Chapter
3
LD-MRS
Product description
8012948/ZMQ0/2017-06-09
©
SICK AG · Germany · All rights reserved · Subject to change without notice
25
The photo diode receiver of the LD-MRS consists of four independent receivers arranged in
a line.
These four receivers enable the implementation of the multi-layer technology.
One receiver is assigned to each plane, thus dividing the vertical aperture angle into four
scan planes.
These four scan planes are scanned interlaced. This means that the combination of two
planes is always scanned simultaneously (first e. g. the yellow and the green plane, then the
blue and the red plane), see
Chapter 3.4.8 Angular resolution and scanning frequency,
.
Colour hues visualize the planes and colour saturation of the echoes.
illustrates the
naming convention for the planes and their predefined colors that are used for the visuali-
sation. The colour saturation in the visualization decreases from echo to echo.
Example for a case with three echoes, see
If a laser beam hits a glass pane, for example, a part of the light is reflected and triggers a
measurement (echo 1).
Most of the light passes the window pane and might hit a rain drop which then again reflects
a part of the light (echo 2).
The remaining light is then reflected by an object, which then results in the third measured
value (echo 3).
Plane
Echo 1
Echo 2
Echo 3
yellow
scan plane 4
scan plane 4
scan plane 4
green
scan plane 3
scan plane 3
scan plane 3
blue
scan plane 2
scan plane 2
scan plane 2
red
scan plane 1
scan plane 1
scan plane 1
Tab. 3-5: Naming conventions (colour code see