-The BKG Ntrip Client (BNC) is a program for simultaneously retrieving, decoding, converting and processing real-time GNSS data streams from NTRIP Broadcasters like +The BKG Ntrip Client (BNC) is a program for simultaneously retrieving, decoding, converting and processing real-time GNSS data streams. It has been developed within the framework of the IAG subcommission for Europe (EUREF) and the International GNSS Service (IGS). Although meant as a real-time tool, it comes with some Post Processing functionality. You may like to use it for data coming from NTRIP Broadcasters like
@@ -11,18 +11,7 @@ http://mgex.igs-ip.net/home.
--Although actually meant as a real-time tool, it comes with some limited Post Processing functionality. -
- --BNC has been developed for the Federal Agency for Cartography and Geodesy (BKG) within the framework of the IAG subcommission for Europe (EUREF) and the International GNSS Service (IGS). -
- --BNC has been written under GNU General Public License (GPL). Source code is available from Subversion software archive http://software.rtcm-ntrip.org/svn/trunk/BNC. Binaries for BNC are available for Windows, 32-bit Linux, 64-bit Linux (compiled under -m32 32-bit compatibility mode), Solaris, and Mac systems. We used the MinGW Version 4.4.0 compiler to create the Windows binary. It is likely that BNC can be compiled on other systems where a GNU compiler and Qt Version 4.7.3 are installed. -
- --Please ensure that you have installed the latest version of BNC available from http://igs.bkg.bund.de/ntrip/download. Feel free to send us comments, suggestions, or bug reports to [euref-ip@bkg.bund.de] or [igs-ip@bkg.bund.de]. + +
+BNC has been written under GNU General Public License (GPL). Source code is available from Subversion software archive http://software.rtcm-ntrip.org/svn/trunk/BNC. Binaries for BNC are available for Windows, 32-bit Linux, 64-bit Linux (compiled under -m32 32-bit compatibility mode), Solaris, and Mac systems. We used the MinGW Version 4.4.0 compiler to create the Windows binary. It is likely that BNC can be compiled on other systems where a GNU compiler and Qt Version 4.7.3 are installed. Please ensure that you have installed the latest version of BNC available from http://igs.bkg.bund.de/ntrip/download and feel free to send us your comments, suggestions or bug reports.
@@ -37,9 +26,21 @@
Authors
-The BKG Ntrip Client (BNC) Qt Graphic User Interface (GUI) has been developed for the Federal Agency for Cartography and Geodesy (BKG) by
-
+The BKG Ntrip Client (BNC) and its Qt Graphic User Interface (GUI) has been developed for +
+
+Federal Agency for Cartography and Geodesy (BKG)
+Georg Weber
+Department of Geodesy
+Frankfurt, Germany
+[euref-ip@bkg.bund.de] or [igs-ip@bkg.bund.de]
+
+by +
+ +
+Czech Technical University (CTU)
Leos Mervart
-Czech Technical University (CTU)
Department of Geodesy
Prague, Czech Republic
@@ -52,11 +53,4 @@
-Georg Weber
-Federal Agency for Cartography and Geodesy (BKG)
-Department of Geodesy
-Frankfurt, Germany
-[euref-ip@bkg.bund.de] or
-[igs-ip@bkg.bund.de]
-Note that BNC's 'PPP' option can also be used offline either for for debugging or for Post Processing purposes. +Note that for debugging or Post Processing purposes BNC's 'PPP' functionality option can also be used offline.
3.12.1 Mode & Mountpoints - optional
-Specify the Point Positioning mode you want to apply and the mountpoints for observations and Broadcast Corrections. Options are 'Realtime-PPP', 'Realtime-SPP', and 'Post-Processing'. +Specify the Point Positioning mode you want to apply and the mountpoints for observations and Broadcast Corrections.
-Choose between plain Single Point Positioning (SPP) and Precise Point Positioning (PPP) in 'Realtime' or 'Post-Processing' mode.
++Choose between plain Single Point Positioning (SPP) and Precise Point Positioning (PPP) in 'Realtime' or 'Post-Processing' mode. Options are 'Realtime-PPP', 'Realtime-SPP', and 'Post-Processing'. +
3.12.1.2 Obs Mountpoint - optional
3.12.2 Marker Coordinates - optional
-Enter the reference coordinate components X,Y,Z of the receiver's position in meters if known. This option makes only sense for static observations. Default are empty option fields, meaning that the antenna's XYZ position is unknown. +Enter the reference coordinate XYZ of the receiver's position in meters if known. This option makes only sense for static observations. Default are empty option fields, meaning that the antenna's XYZ position is unknown.
@@ -1429,10 +1425,10 @@
3.12.3 Antenna Excentricity - optional
-You may like to specify North, East and Up components of an antenna eccentricity which is the difference between a nearby marker position and the antenna phase center. If you do so BNC will produce coordinates referring to the marker position and not referring to the antenna phase center.. +You may like to specify North, East and Up components of an antenna eccentricity which is the difference between a nearby marker position and the antenna phase center. If you do so BNC will produce coordinates referring to the marker position and not referring to the antenna phase center.
3.12.4 NMEA & Plot Output - optional
-BNC allows to output results from Precise Point Positioning in NMEA format. It can also plot a time series of North, East and UP displacements of coordinate components. +BNC allows to output results from Precise Point Positioning in NMEA format. It can also plot a time series of North, East and UP displacements.
@@ -1449,5 +1445,5 @@-Note that Tomoji Takasu has written a program called RTKPlot for visualizing NMEA strings. It is available from http://gpspp.sakura.ne.jp/rtklib/rtklib.htm and compatible with the NMEA output of BNC's 'PPP Client' option. +Note that Tomoji Takasu has written a program called RTKPlot for visualizing NMEA strings. It is available from http://gpspp.sakura.ne.jp/rtklib/rtklib.htm and compatible with the NMEA file and port output of BNC's 'PPP' client option.
@@ -1457,5 +1453,5 @@-NASA's 'World Wind' software (see http://worldwindcentral.com/wiki/NASA_World_Wind_Download) can be used for real-time visualization of positions provided through BNC's NMEA IP output port. You need the 'GPS Tracker' plug-in available from http://worldwindcentral.com/wiki/GPS_Tracker for that. The 'Word Wind' is not meant for showing centimeter level details. +NASA's 'World Wind' software (see http://worldwindcentral.com/wiki/NASA_World_Wind_Download) can be used for real-time visualization of positions provided through BNC's NMEA IP output port. You need the 'GPS Tracker' plug-in available from http://worldwindcentral.com/wiki/GPS_Tracker for that. The 'Word Wind' map resolution is not meant for showing centimeter level details.
@@ -1469,6 +1465,11 @@3.12.5 Post Processing - optional
When in 'Post-Processing mode
BNC accepts RINEX Version 2 as well as RINEX Version 3 Observation or Navigation file formats. Files carrying Broadcast Corrections must have the format produced by BNC in the 'Broadcast Corrections' tab. +
When in 'Post-Processing' mode +
BNC accepts RINEX Version 2 as well as RINEX Version 3 Observation or Navigation file formats. Files carrying Broadcast Corrections must have the format produced by BNC through the 'Broadcast Corrections' tab.
Post Processing PPP results can be saved in a specific output file. @@ -1529,5 +1530,5 @@
-By default BNC does not estimate troposphere parameters. Tick 'Estimate tropo' to estimate troposphere parameters together with the coordinates and save T_apr and dT in BNC's log file. +By default BNC does not estimate troposphere parameters. Tick 'Estimate tropo' to estimate troposphere parameters together with the coordinates and save T_apr and dT/cos(z) in BNC's log file.
@@ -1544,5 +1545,5 @@-Zero value (or empty field) means that BNC processes each epoch of data immediately after its arrival using satellite clock corrections available at that time. Non-zero value 'Sync Corr' means that the epochs of data are buffered and the processing of each epoch is postponed till the satellite clock corrections not older than 'Sync Corr' are available. Specifying a value of half the update rate of the clock corrections as 'Sync Corr' (i.e. 5 sec) may be appropriate. Note that this causes an additional delay of the PPP solutions in the amount of the update rate. +Zero value (or empty field) means that BNC processes each epoch of data immediately after its arrival using satellite clock corrections available at that time. Non-zero value 'Sync Corr' means that the epochs of data are buffered and the processing of each epoch is postponed till the satellite clock corrections not older than 'Sync Corr' are available. Specifying a value of half the update rate of the clock corrections as 'Sync Corr' (i.e. 5 sec) may be appropriate. Note that this causes an additional delay of the PPP solutions in the amount of half of the update rate.
@@ -1555,5 +1556,5 @@
3.12.7.6 Averaging - optional if XYZ is set
-Enter the length of a sliding time window in minutes. BNC will continuously output moving average values ns and their RMS as computed from those individual values obtained most recently throughout this period. RMS values presented for XYZ coordinates and tropospheric zenit path delays are bias reduced while RMS values for Nort/East/Up (NEU) displacements are not. Averaged values for XYZ coordinates and their RMS are marked with string "AVE-XYZ" in BNC's log file and 'Log' section while averaged values for NEU displacements and their RMS are marked with string "AVE-NEU" and averaged values for the tropospheric delays and their RMS are marked with string "AVE-TRP". Example: +Enter the length of a sliding time window in minutes. BNC will continuously output moving average values and their RMS as computed from those individual values obtained most recently throughout this period. RMS values presented for XYZ coordinates and tropospheric zenit path delays are bias reduced while RMS values for Nort/East/Up (NEU) displacements are not. Averaged values for XYZ coordinates and their RMS are marked with string "AVE-XYZ" in BNC's log file and 'Log' section while averaged values for NEU displacements and their RMS are marked with string "AVE-NEU" and averaged values for the tropospheric delays and their RMS are marked with string "AVE-TRP". Example:
@@ -1760,6 +1761,6 @@ Then, epoch by epoch:
-As an SP3 file contents should be referred to the satellites Center of Mass (CoM) while Broadcast Corrections are referred to the satellites Antenna Phase Center (APC), an offset has to be applied which is available from an IGS ANTEX file (see section 'ANTEX File'). You should therefore specify the 'ANTEX File' path under tab 'PPP (2)' if you want to save the stream contents in SP3 format. If you don't specify an 'ANTEX File' path there, the SP3 file contents will be referred to the satellites APCs. +As an SP3 file contents should be referred to the satellites Center of Mass (CoM) while Broadcast Corrections are referred to the satellites APC, an offset has to be applied which is available from an IGS ANTEX file (see section 'ANTEX File'). You should therefore specify the 'ANTEX File' path under tab 'PPP (2)' if you want to save the stream contents in SP3 format. If you don't specify an 'ANTEX File' path there, the SP3 file contents will be referred to the satellites APCs.
@@ -2730,5 +2731,5 @@
-Some BNC options require Antenna Phase Center variations as made available from IGS through so-called ANTEX files in directory ftp://igs.org/pub/station/general. An example ANTEX file is also part of the BNC package for convenience. +Some BNC options require antenna phase center variations as made available from IGS through so-called ANTEX files in directory ftp://igs.org/pub/station/general. An example ANTEX file is also part of the BNC package for convenience.