your position is our focus
4.4.4.2
NMEA Protocol Configuration (UBX – CFG – NMEA)
The
NMEA
protocol
on
ANTARIS
®
4
receivers
can
be
configured
to
the
need
of
customer
applications.
As
default
all
invalid
position
and
all
positions
out
of
the
defined
accuracy
range
are
not
reported
(details
see
Section
4.6.9.1
).
Parameter
Description
NMEA Filtering
Position
filtering
If
disabled,
invalid
or
old
position
output
is
being
communicated,
but
the
valid
flag
indiciates
that
the
data
is
not
current.
Masked
position
filtering
If
disabled,
Masked
position
data
is
still
being
output,
but
the
valid
flag
will
indicate
that
the
defined
accuracy
range
has
b en
exceeded.
e
Time
filtering
If
disabled,
the
receiver's
best
knowledge
of
time
is
output,
even
though
it
might
be
wrong.
Date
filtering
If
disabled,
the
receiver's
best
knowledge
of
date
is
output,
even
though
it
might
be
wrong.
SBAS
filtering
If
enabled,
SBAS
satellites
are
reported
according
to
the
NMEA
standard.
Track
Filtering
If
disabled,
an
unfiltered
COG
output
is
being
output.
NMEA Version
There
are
two
NMEA
standards
supported.
The
default
NMEA
protocol
version
is
2.3.
Alternatively
also
Specification
version
2.1
can
be
enabled
(for
details
refer
to
Section 4.6.9.1
).
NUM SV
This
is
the
Maximum
Number
of
SVs
reported
in
NMEA
protocol.
This
does
not
affect
the
receiver's
operation.
It
only
limits
the
number
of
SVs
reported
in
NMEA
mode
(this
might
be
needed
with
older
mapping
applications
which
only
support
8-
or
12-channel
receivers).
NMEA Flag
Compatibility
Mode
Some
NMEA
applicati
decimal
comma.
Th
ons
only
work
with
a
fixed
number
of
digits
behind
the
erefore
ANTARIS
®
4
offer
a
compatibility
mode
to
communicate
with
the
most
popular
map
applications
(e.g.
NOKIA
phone,
TOM-TOM
receivers).
Consideration
Mode
ANTARIS
®
4
uses
a
soph
quality
detection
scheme,
in
order
to
all
SV
if
it
If
Consideration
mode
is
enabled,
all
Satellites,
which
were
considered
for
municated
as
being
used
for
the
position
tellites
are
ined
in
the
isticated
signal
produce
the
best
possible
position
output.
This
algorithm
considers
measurements,
and
eventuall
decides
to
only
use
a
subset
thereof,
improves
the
overall
position
accuracy.
navigation,
are
being
com
determination.
If
Consideration
mode
is
disabled,
only
those
sa
marked
as
being
used,
which
after
the
consideration
step
rema
position
output.
4.4.5 RTCM
Protoco
T
Technical
tocol
is
a
unidirectional
protocol
(input
to
the
r
pplying
the
GP
rrection
data
(DGPS).
The
RTCM
protocol
specification
is
available
from
http://www.rtcm.org/.
The
ANTARIS 4
GPS
Technology
support
RTCM
Correction
Type
Messages
1,2,
3
and
9.
l
he
RTCM
(Radio
Commission
for
Maritime
Services)
pro
eceiver)
su
S
receiver
with
real-time
differential
co
®
GPS
Modules
-
System
Integration
Manual
(SIM)
(incl.
Reference
Design)
Receiver
Description
GPS.G4-MS4-05007-A1
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