1 How To...
1.3
Define an SBF Output Stream
As an example, this section explains how to use the command line interface to configure the
receiver to output the
SBF block at 10 Hz, the
SBF block at 1 Hz,
and the
block at its On-Change rate (see section 4.1.8 for more details on the SBF
output rate). In this example, we will assume that these blocks must be output through the
USB2 connection.
1. First make sure that the USB2 connection is configured for SBF output (this is the
default). In case this is not so, you should invoke:
2. Scheduling SBF blocks for output is done by defining so-called "SBF streams". At least
10 SBF streams can be defined by the user. A stream consists of a set of SBF blocks
that need to be output at a given rate through a given connection. By default, all
streams are empty, and no SBF blocks are output. For our example, we will need to
use two streams. Defining these SBF streams involves the
command:
setSBFOutput,Stream1,USB2,MeGPSNav,msec100 <CR>
setSBFOutput,Stream2,USB2,PVTCartesian,sec1 <CR>
Note that the rate specified with the
command (
msec100
or
sec1
above)
only applies to the blocks that support a flexible output rate (see appendix A). The
block does not support flexible rate: it is always output at its “On-Change” rate regardless
of the stream rate. For this reason, in the above example, we could equally have enabled
in
Stream2
.
3. To stop outputting SBF on a given connection, you can either redefine or empty the
corresponding streams:
setSBFOutput,Stream1,USB2,none <CR>
setSBFOutput,Stream2,USB2,none <CR>
A second possibility is to disable all SBF messages on that connection:
Note that the
command can be used to output a set of blocks once, instead of
at regular interval. This is typically used to output all currently available satellite ephemerides
at once. For example, the following command instructs the receiver to output all known GPS,
GLONASS, Galileo and BeiDou ephemerides over USB2:
exeSBFOnce, USB2, GPS+GLO+GAL+BDS <CR>
This is a one-time action: the requested blocks are inserted in the stream, and then the
normal flow of blocks as defined with
resumes. When logging the SBF
stream for post-processing, it is a good practice to request all satellite ephemerides with
the
command when starting a new log file. Make sure however not to re-
quest measurement or PVT blocks with
when these blocks are also enabled
with
as it could cause the same epoch to be duplicated in the log file. Some
post-processing tools may not work properly when the same epoch is repeated twice.
20
Содержание PolaRx5TR
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Страница 147: ...3 Command Line Reference PVTMode Static StandAlone SBAS DGPS RTKFloat RTKFixed Cartesian1 COM1 147 ...
Страница 218: ...3 Command Line Reference COM1 esoc COM1 MeasEpoch CR R esoc COM1 MeasEpoch SBFOnce COM1 MeasEpoch COM1 218 ...
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