your position is our focus
u-blox
provides
AlmanacPlus
®
data
files
in
different
sizes,
which
contain
differential
almanac
corrections
that
are
tile
Flash
EPROM.
A
ffline
works
in
locat
ny
wireless
connectivity
as
the
correction
data
files
reside
in
the
r
immedi
nload
w
ll
charges.
N
NTARIS
®
4
GPS
re
special
4.5.7 SuperSense
®
GPS - Weak Signal GPS (TIM-4H/ LEA-4H/ TIM-4S/ LEA-4S)
This section only applies to TIM-4H/TIM-4S, LEA-4H/LEA-4S and NEO-4S.
he
SuperSense
®
technology
drastically
increases
the
sensitivity
of
ANTARIS
®
4
GPS
receivers,
thereby
enhancing
S
co
though
not
ls
much
longer
than
Standard
GPS
receivers
and
can
track
down
to
levels
close
to
-160dBm,
which
is
about
10dB
better
than
what
a
ANTARIS
®
4
rd
GPS
Automatic S
The
SuperSense
®
firmware
automatically
adjusts
the
sensitivity
settings
for
best
performance
by
applying
nnel
depending
on
the
signal
strength.
For
an
optimized
startup
another
sensitivity
mode
may
be
considered
(see
Section 4.5.8
).
ation
accuracy
under
dynamic
conditions
will
be
lower
for
weaker
signals
due
to
the
long
integration
time
but
also
due
to
the
fact
that
SuperSense
will
have
to
rely
on
reflected
signals
in
order
to
achieve
position
fixes
(
see Figure 80
).
valid
for
a
period
of
between
1
and
14
days
thereafter.
Users
can
download
correction
data
anytime
they
have
an
Internet
connection,
for
example
at
home
or
in
the
office.
The
GPS
receiver
stores
the
downloaded
data
in
the
non-vola
ssistNow
®
O
ions
without
a
eceiver.
This
makes
them
ately
available
upon
start-up,
eliminating
connection
set-up
delays,
dow
aiting
times
and
ca
ote:
All
A
ceivers
with
Flash
EPROM
are
AssistNow
®
Offline
capable
but
require
a
firmware.
T
the
GP
verage
in
areas
with
obstructed
sky
view
(e.g.
urban
canyons)
and
providing
positioning
in
many
all
indoor
locations.
SuperSense
®
can
integrate
the
incoming
signa
Standa
receiver
can
do.
election of optimal Sensitivity
individual
integration
times
for
each
cha
performance
(i.e.
automotive
applications)
Accuracy and Dynamic Responsiveness
In
the
presence
of
strong
signals,
the
performance
and
dynamic
responsiveness
of
SuperSense
®
is
comparable
to
Standard
GPS
receivers
like
TIM-4A
or
TIM-4P.
The
navig
6 SV in sight for Navigation
(
3 direct
,
3 reflected
Signals)
3 SV in sight for Navigation
Figure 80: Direct line-of-sight versus reflected signals
GPS
Modules
-
System
Integration
Manual
(SIM)
(incl.
Reference
Design)
Receiver
Description
GPS.G4-MS4-05007-A1
Page 93
