5.3 Reflectivity
RS-Helios-16P measures the reflectivity of objects. The reflectivity is an index that measures the
ability of an object to reflect light and is greatly related to the material of the object itself. Therefore,
the reflectivity information can be used to distinguish objects of different materials.
RS-Helios-16P reports calibrated reflectivity values from 0 to 255, among which diffuse reflectors
report values from 0 to 100, and retroreflectors report values from 101 to 255. Black objects are
with low reflectivity values, white objects are with high reflectivity values, the most ideal reflection
reports the reflectivity value of 255.
Figure 7 Definition of Reflectivity
5.4 Laser Return Modes
5.4.1 Principle of Laser Return Modes
RS-Helios-16P supports multiple laser return modes, namely: Strongest, First, Last and Dual. When
set to Dual Return mode, the details of the target will increase, and the volume of data is twice
that in the Single Return mode.
Due to beam divergence, multiple laser returns are possible from any single laser shot. After a laser
pulse is hot, the beam size becomes larger and larger as it travels in the air, when a beam is large
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