Velodyne DIGITAL DRIVE - REV G Instrukcje Operacyjne Strona 5

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P
R
I
N
C
I
P
L
E
S
O
F O
P
E
R
A
T
I
O
N
H
D
L
-
64
E
S2
and
S2.1
U
s
e
r
s
Ma nua
l
The sensor operates, instead of a
single laser firing through
a
rotating
mirror,
with
64
lasers
fixed
mounted
on upper and lower laser
blocks,
each housing 32 lasers. Both laser blocks rotate as a single unit. With this design each of the lasers fires tens of thousands of times per
second, providing exponentially more data points/second and a more data-intensive point cloud than a rotating mirror design. The sensor
delivers a 360° horizontal Field of View (HFOV) and a 26.8° vertical FOV (31.5° VFOV for the S2.1).
A
dditionall
y
, state-of-the-art digital
signal processing and
waveform
analysis
are
employed
to
provide
high
accurac
y
, extended distance
sensing and intensity data. The sensor is rated to provide usable returns up to 120 meters. The sensor employs a direct drive motor
system with no belts or chains in the drive train.
See the specifications at the end of this manual for more
information
about
sensor
operating
conditions.
L
a
s
e
r
R
e
c
e
i
v
e
r
s
(Groups of 32)
H
o
u
s
i
n
g
(Entire unit spins
at 5-20 Hz)
Motor
H
o
u
s
i
n
g
L
a
s
e
r
E
m
i
tt
e
r
s
(Groups of 16)
Figure
1.
HDL
-
64
E
S
2
design overview.
[ 2
]
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