-BNC allows to compare the contents of two files containing GNSS orbit and clock data in SP3 format. SP3 ASCII files basically contain a list of records over a certain period of time. Each record carries a time tag, the X,Y,Z position of the satellite's Center of Mass at that time and the corresponding satellite clock value. Both SP3 files may contain some records for different epochs. If so then BNC only compares records for identical epochs. BNC accepts that a specific GNSS system or a specific satellite is only available from one of the SP3 files. Note that BNC does not interpolate orbits when comparing SP3 files. +BNC allows to compare the contents of two files containing GNSS orbit and clock data in SP3 format. SP3 ASCII files basically contain a list of records over a certain period of time. Each record carries a time tag, the XYZ position of the satellite's Center of Mass at that time and the corresponding satellite clock value. Both SP3 files may contain some records for different epochs. If so then BNC only compares records for identical epochs. BNC accepts that a specific GNSS system or a specific satellite is only available from one of the SP3 files. Note that BNC does not interpolate orbits when comparing SP3 files.
@@ -2177,5 +2178,5 @@
Having this parameter first in each record is mandatory. BNC can carry out PPP solutions only for streams or files specified here.
-
@@ -2275,5 +2276,5 @@-Each row reports the PPP result of one epoch. It begins with a UTC time stamp (yy-mm-dd hh:mm:ss) which tells us when the result was produced. A second time stamp (yyyy-mm-dd_hh:mm:ss) describes the PPP's epoch in 'GPS Time'. It is followed by the derived X,Y,Z position in [m], its North, East and Up displacement compared to an introduced a-priory coordinate and the estimated tropospheric delay [m] (model plus correction). +Each row reports the PPP result of one epoch. It begins with a UTC time stamp (yy-mm-dd hh:mm:ss) which tells us when the result was produced. A second time stamp (yyyy-mm-dd_hh:mm:ss) describes the PPP's epoch in 'GPS Time'. It is followed by the derived XYZ position in [m], its North, East and Up displacement compared to an introduced a-priory coordinate and the estimated tropospheric delay [m] (model plus correction).
@@ -2339,5 +2340,5 @@
3.13.1.10.1 Sampling - optional if 'SINEX TRO File' is set
-Select a 'Sampling' rate for saving troposphere parameters. -
--Default 'Sampling' rate is '0', meaning that any estimated troposphere parameter will be save on disk. +
3.13.1.10.1 Sampling - mandatory if 'SINEX TRO File' is set
+Select a 'Sampling' rate in seconds for saving troposphere parameters. +
++Default 'Sampling' rate is '0', meaning that all troposphere estimates will be save on disk.
3.13.2 PPP (2): Processed Stations
3.13.2.1 Sigma North/East/Height - mandatory
-Enter a sigma in meters for the initial XYZ coordinate. A value of 100.0 (default) may be an appropriate choice. However, this value may be significantly smaller (i.e. 0.01) when starting for example from a station with known XZY position in Quick-Start mode. -
- -3.13.2.2 Noise North/East/Height - mandatory
-Enter a sigma in meters for the 'White Noise' of estimated XYZ coordinate components. A value of 100.0 (default) may be appropriate when considering possible sudden movements of a rover. -
- -3.13.2.3 Tropo Sigma - mandatory if 'Estimate tropo' is set
+This panel allows to enter parameters specific to each PPP process. Individual sigmas for a-priori coordinates and a noise for coordinate variations over time can be introduced. Furthermore, a sigma for model based troposphere estimates and the corresponding noise for troposphere variations can be specified. Finally, local IP ports can be defined for output of NMEA streams carrying PPP results. +
+ + + + +3.13.2.2 Sigma North/East/Up - mandatory
+Enter a sigmas in meters for the initial coordinate compoments. A value of 100.0 (default) may be an appropriate choice. However, this value may be significantly smaller (i.e. 0.01) when starting for example from a station with known position - so-called Quick-Start mode. +
+ +3.13.2.3 Noise North/East/Up - mandatory
+Enter a sigma in meters for the 'White Noise' of estimated coordinate components. A value of 100.0 (default) may be appropriate when considering possible sudden movements of a rover. +
+ +3.13.2.4 Tropo Sigma - mandatory
Enter a sigma in meters for the a-priory model based tropospheric delay estimation. A value of 0.1 (default) may be an appropriate choice.
-3.13.2.4 Tropo Noise - mandatory if 'Estimate tropo' is set
3.13.2.5 Tropo Noise - mandatory
Enter a sigma in meters per second to describe the expected variation of the tropospheric effect. Supposing 1Hz observation data, a value of 3e-6 (default) would mean that the tropospheric effect may vary for 3600 * 3e-6 = 0.01 meters per hour.
- + Specify the IP port number of a local port where Point Positioning results become available as NMEA messages. The default value for 'NMEA Port' is an empty option field, meaning that BNC does not provide NMEA messages vi IP port. Note that the NMEA file output and the NMEA IP port output are the same.