source: ntrip/trunk/BNC/Example_Configs/00_Readme.txt@ 7802

Configuration Examples

BNC comes with a number of configuration examples which can be used on all 
operating systems. Copy the complete directory 'Example_Configs' which comes
with the software including sub-directories 'Input' and 'Output' to your disc.
There are several ways to start BNC using one of the example configurations: 

* On graphical systems (except for Mac systems) you may use the computer mouse 
  to 'drag' a configuration file icon and 'drop' it on top of BNC's program icon.

* You could also start BNC using a command line for naming a specific 
  configuration file (suggested e.g. for Mac systems):
  bnc --conf <configFileName>

* On non-graphical systems or when running BNC in batch mode in the background
  you may start the program using a command line with a configuration file 
  option in 'no window' mode (example for Windows systems):
  bnc.exe --conf <configFileName> --nw

Although it's not a must, we suggest that you always create BNC configuration
files with the filename extension '.bnc'. 

We furthermore suggest for convenience reasons that you configure your system
to automatically start BNC when you double-click a file with the filename 
extension '.bnc'. The following describes what to do on Windows systems to 
associate the BNC program to such configuration files: 


1. Right-click a file that has the extension '.bnc' and then click 'Open'. If 
   the 'Open' command is not available, click 'Open With' or double-click the
   file.

2. Windows displays a dialog box that says that the system cannot open this 
   file. The dialog box offers several options for selecting a program.

3. Click 'Select the program from a list', and then click 'OK'.

4. The 'Open With' dialog box is displayed. Click 'Browse', locate and then
   click the BNC program, and then click 'Open'.

5. Click to select the 'Always use the selected program to open this kind
   of file' check box.

6. Click 'OK'.

Some of the presented example configuration files contain a user ID 'Example'
with a password 'Configs' for accessing a few GNSS streams from public Ntrip
Broadcasters. This generic account is arranged for convenience reasons only. 
Please be so kind as to replace the generic account details as well as the 
place holders 'User' and 'Pass' by the personal user ID and password you 
receive following an online registration through
http://register.rtcm-ntrip.org. 

Note that the account for an Ntrip Broadcaster is usually limited to 
pulling a specified maximum number of streams at the same time. As running
some of the example configurations requires pulling several streams, it 
is suggested to make sure that you don't exceed your account's limits.

Make also sure that sub-directories 'Input' and 'Output' which are part of 
the example configurations exist on your system or adjust the affected 
example configuration options according to your needs.

Some BNC options require antenna phase center variations as made available 
from IGS through so-called ANTEX files at ftp://igs.org/pub/station/general. 
An example ANTEX file 'igs08.atx' is part of the BNC package for convenience.

The example configurations assume that no proxy protects your BNC host. 
Should a proxy be operated in front of BNC then you need to introduce its 
name or IP and port number in the 'Network' panel.

(A) Working with Configuration Files

You should be able to run all configuration file examples without changing 
contained options. However, configurations 'Upload.bnc' and 'UploadPPP.bnc' are 
exceptions because they require an input stream from a connected network engine. 

1. Configuration File 'RinexObs.bnc'
Purpose: Convert RTCM streams to RINEX Observation files. The configuration 
pulls streams from Ntrip Broadcasters using Ntrip Version 1 to generate 15min 
1Hz RINEX Version 3 Observation files. See 
http://igs.bkg.bund.de/ntrip/observations for observation stream resources.

2. Configuration File 'RinexEph.bnc'
Purpose: Convert a RTCM stream with navigation messages to RINEX Navigation 
files. The configuration pulls a RTCM Version 3 stream with Broadcast Ephemeris 
coming from the real-time EUREF and IGS networks and saves hourly RINEX Version 
3 Navigation files. See http://igs.bkg.bund.de/ntrip/ephemeris for further 
real-time Broadcast Ephemeris resources.

3. Configuration File 'BrdcCorr.bnc'
Purpose: Save Broadcast Corrections from RTCM SSR messages in hourly plain 
ASCII files. See http://igs.bkg.bund.de/ntrip/orbits for various real-time IGS 
or EUREF orbit/clock correction products.

4. Configuration File 'RinexConcat.bnc'
Purpose: Concatenate several RINEX Version 3 files to produce one compiled file 
and edit the marker name in the file header. The sampling interval is set to 30 
seconds. See section 'RINEX Editing & QC' in the documentation for examples on 
how to call BNC from command line in 'no window' mode for RINEX file editing, 
concatenation and quality check.

5. Configuration File 'RinexQC.bnc'
Purpose: Check the quality of a RINEX Version 3 file by means of a multipath 
analysis. Results are saved on disk in terms of a plot in PNG format. See 
section 'RINEX Editing & QC' in the documentation for examples on how to call 
BNC from command line in 'no window' mode for RINEX file editing, concatenation 
and quality check.

6. Configuration File 'RTK.bnc'
Purpose: Feed a serial connected receiver with observations from a nearby 
reference station for conventional RTK. The stream is scanned for RTCM 
messages. Message type numbers and latencies of incoming observations are 
reported in BNC's logfile.

7. Configuration File 'FeedEngine.bnc'
Purpose: Feed a real-time GNSS engine with observations from remote reference 
stations. The configuration pulls a single stream from an Ntrip Broadcaster. 
You could also pull several streams from different casters. Incoming 
observations are decoded, synchronized, output through a local IP port and also 
saved into a file. Failure and recovery thresholds are specified to inform 
about outages.

8. Configuration File 'PPP.bnc'
Purpose: Precise Point Positioning from observations of a rover receiver. The 
configuration reads RTCM Version 3 observations, a Broadcast Ephemeris stream 
and a stream with Broadcast Corrections. Positions are saved in the logfile.

9. Configuration File 'PPPNet.bnc'
Purpose: Precise Point Positioning for several rovers or receivers from an 
entire network of reference stations in one BNC job. The possible maximum 
number of PPP solutions per job depends on the processing power of the hosting 
computer. This example configuration reads two RTCM Version 3 observation 
streams, a Broadcast Ephemeris stream and a stream with Broadcast Corrections. 
PPP Results for the two stations are saved in PPP logfiles.

10. Configuration File 'PPPQuickStart.bnc'
Purpose: Precise Point Positioning in Quick-Start mode from observations of a 
static receiver with precisely known position. The configuration reads RTCM 
Version 3 observations, Broadcast Corrections and a Broadcast Ephemeris stream. 
Positions are saved in NMEA format on disc. They are also output through IP 
port for real-time visualization with tools like RTKPLOT. Positions are saved 
in the logfile.

11. Configuration File 'PPPPostProc.bnc'
Purpose: Precise Point Positioning in post processing mode. BNC reads RINEX 
Version 3 Observation and 3 Navigation files and a Broadcast Correction file. 
PPP processing options are set to support the Quick-Start mode. The output is 
saved in a specific post processing logfile and contains coordinates derived 
over time following the implemented PPP filter algorithm.

12. Configuration File 'PPPGoogleMaps.bnc'
Purpose: Track BNC's point positioning solutions using Google Maps or 
OpenStreetMap as background. BNC reads a RINEX Observation file and a RINEX 
Navigation file to carry out a 'Standard Point Positioning' solution in post 
processing mode. Although this is not a real-time application it requires the 
BNC host to be connected to the Internet. Specify a computation speed, then hit 
button 'Open Map' to open the track map, then hit 'Start' to visualize receiver 
positions on top of GM/OSM maps.

13. Configuration File 'SPPQuickStartGal.bnc'
Purpose: Single Point Positioning in Quick-Start mode from observations of a 
static receiver with quite precisely known position. The configuration uses 
GPS, GLONASS and Galileo observations and a Broadcast Ephemeris stream.

14. Configuration File 'SaveSp3.bnc'
Purpose: Produces SP3 files from a Broadcast Ephemeris stream and a Broadcast 
Correction stream. The Broadcast Correction stream is formally introduced in 
BNC's 'Combine Corrections' table. Note that producing SP3 requires an ANTEX 
file because SP3 file content should be referred to CoM.

15. Configuration File 'Sp3ETRF2000PPP.bnc'
Purpose: Produce SP3 files from a Broadcast Ephemeris stream and a stream 
carrying ETRF2000 Broadcast Corrections. The Broadcast Correction stream is 
formally introduced in BNC's 'Combine Corrections' table. The configuration 
leads to a SP3 file containing orbits also referred to ETRF2000. Pulling in 
addition observations from a reference station at precisely known ETRF2000 
position allows comparing an 'INTERNAL' PPP solution with a known ETRF2000 
reference coordinate.

16. Configuration File 'Upload.bnc'
Purpose: Upload orbits and clocks from a real-time GNSS engine to an Ntrip 
Broadcaster. For that the configuration reads precise orbits and clocks in 
RTNET format. It also reads a stream carrying Broadcast Ephemeris. BNC converts 
the orbits and clocks into Broadcast Corrections and encodes them to RTCM 
Version 3 SSR messages to finally upload them to an Ntrip Broadcaster. The 
Broadcast Correction stream is referred to satellite Antenna Phase Center (APC) 
and reference system IGS08. Orbits are saved on disk in SP3 format and clocks 
are saved in Clock RINEX format.

17. Configuration File 'Combi.bnc'
Purpose: Pull several streams carrying Broadcast Corrections and a Broadcast 
Ephemeris from an Ntrip Broadcaster to produce a combined Broadcast Correction 
stream. BNC encodes the combination product in RTCM Version 3 SSR messages and 
uploads that to an Ntrip Broadcaster. The Broadcast Correction stream is 
referred to satellite Antenna Phase Center (APC) and not to satellite Center of 
Mass (CoM). Its reference system is IGS08. Orbits are saved in SP3 format 
(referred to CoM) and clocks in Clock RINEX format.

18. Configuration File 'CombiPPP.bnc'
Purpose: This configuration equals the 'Combi.bnc' configuration. However, the 
combined Broadcast Corrections are in addition used for an 'INTERNAL' PPP 
solutions based on observations from a static reference station with known 
precise coordinates. This allows a continuous quality check of the combination 
product through observing coordinate displacements.

19. Configuration File 'UploadEph.bnc'
Purpose: Pull a number of streams from reference stations to get hold of 
contained Broadcast Ephemeris messages. They are encoded to RTCM Version 3 
format and uploaded for the purpose of providing a Broadcast Ephemeris stream 
with an update rate of 5 seconds.

20. Configuration File 'CompareSp3.bnc'
Purpose: Compare two SP3 files to calculate RMS values for orbit and clock 
differences. GPS satellite G05 and GLONASS satellite R18 are excluded from this 
comparison. Comparison results are saved in a logfile.

21. Configuration File 'Empty.bnc'
Purpose: Provide an empty example configuration file for BNC which only 
contains the default settings.

(B) Working with Command Line configuration options

The following configuration examples make use of BNC's 'Command Line Interface' 
(CLI). Configuration options are exclusively specified via command line. No 
configuration file is used. Examples are provided as shell scripts for a Linux
system. They call BNC in 'no window' batch mode (command line option -nw). 
The scripts expect 'Example_Configs' to be the current working directory.

22. Shell Script 'RinexQC.sh'
Purpose: Equals configuration file example 'RinexQC.bnc', checks the quality of
a RINEX Version 3 file by means of a multipath analysis. Virtual X-Server 
'Xvfb' is operated while producing plot files in PNG format. BNC is offline. 
All results are saved on disk. 

23. Shell Script 'RinexConcat.sh'
Purpose: Equals configuration file example 'RinexConcat.bnc', concatenates
several RINEX Version 3 files to produce one compiled file and edit the marker
name in the file header. The sampling interval is set to 30 seconds. BNC is
offline.

24. Shell Script 'RinexEph.sh' 
Purpose: Equals configuration file example 'RinexEph.bnc', converts a RTCM 
stream with navigation messages to RINEX Navigation files. The configuration 
pulls a RTCM Version 3 stream with Broadcast Ephemeris coming from the 
real-time EUREF and IGS networks and saves hourly RINEX Version 3 Navigation
files. BNC runs online until it's terminated after 10 seconds.  See 
http://igs.bkg.bund.de/ntrip/ephemeris for further real-time Broadcast 
Ephemeris resources. 

25. Shell Script 'ScanLate.sh'
Purpose: Scan an observation stream for contained RTCM message types, print
observation latencies. The output is saved in a logfile. Latencies are 
reported every 10 seconds. BNC runs online until it's terminated after 20
seconds.

26. Shell Script 'RinexObs.sh'
Purpose: Equals configuration file example 'RinexObs.bnc', converts RTCM
streams to RINEX Observation files. The configuration pulls streams from two
Ntrip Broadcasters using Ntrip Version 1 to generate 15min 1Hz RINEX Version 3
Observation files. See http://igs.bkg.bund.de/ntrip/observations for 
observation stream resources. BNC runs online until it's terminated after 30
seconds.

(C) Command Line configuration options overwriting Configuration File options

For specific applications you may like to use your own set of standard 
configuration options from a configuration file and update some of its content 
via command line. When using a configuration file and command line configuration
options together in one BNC call, the command line configuration options will 
always overrule options contained in the configuration file.

27. Shell Script 'CompareSp3.sh'
Purpose: Equals configuration file example 'CompareSp3.bnc', compares two SP3 
files to calculate RMS values for orbit and clock differences. However, instead 
of excluding GPS satellite G05 and GLONASS satellite R18 from the comparison as 
specified in 'CompareSp3.bnc', GPS satellite G06 and all GLONASS satellites are 
excluded via command line option. BNC runs offline. Comparison results are saved
in a logfile.

Georg Weber, BKG
Frankfurt, March 2016
igs-ip@bkg.bund.de