IonoBias Application

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Description

This application will open and read several preprocessed RINEX obs files (containing obs types, EL, LA, LO, SR, or SS) and use the data to estimate satellite and receiver biases and to compute a simple ionospheric model using least squares and the slant TEC values.

Command Summary

Required Arguments:

Short Arg.	Long Arg.	Description
	--input	Input RINEX observation file name(s).

Optional Arguments:

Short Arg.	Long Arg.	Description
-f		File containing more options.
	--XSat	Exclude this satellite (<sat> may be <system> only).
-v	--verbose	Print extended output info.
-d	--debug	Increase debug level.
-h	--help	Print syntax and quit.
Ephemeris Input
	--navdir	Path of navigation file(s).
	--nav	RINEX navigation or SP3 file(s).
Output
	--datafile	Data (AT) file name, for output and/or input.
	--log	Output log filename.
	--biasout	Output satellite+receiver biases file name.
Time Limits
	--BeginTime	Start time, arg is of the form YYYY,MM,DD,HH,Min,Sec.
	--BeginGPSTime	Start time, arg is of the form GPSweek, GPSsow.
	--EndTime	End time, arg is of the form YYYY,MM,DD,HH,Min,Sec.
	--EndGPSTime	End time, arg is of the form GPSweek, GPSsow.
Processing
	--NoEstimation	Do NOT perform the estimation (default=false).
	--NoPreprocess	Skip preprocesing; read (existing) AT file (default=false).
	--NoSatBiases	Compute receiver biases ONLY, not RX+sat biases (default=false).
	--Model	Ionospheric model type is linear, quadratic, or cubic.
	--MinPoints	Minimum points per satellite required.
	--MinTimeSpan	Minimum timespace per satellite required (minutes).
	--MinElevation	Minimum elevation angle (degrees).
	--MinLatitude	Minimum latitude (degrees).
	--MaxLatitude	Maximum latitude (degrees).
	--MinLongitude	Minimum longitude (degrees).
	--MaxLongitude	Maximum longitude (degrees).
	--TimeSector	Time sector (day--night--both).
	--TerminOffset	Terminator offset (minutes).
	--IonoHeight	Ionosphere height (km).

Examples

> IonoBias --inputdir data_set --navdir data_set --input s081213a.99o --input s081214a.99o
--input s081215a.99o --nav s081213a.99n --nav s081214a.99n --nav s081215a.99n --datafile output}
IonoBias, built on the GPSTK ToolKit, Ver 1.0 6/25/04, Run 2006/08/17 09:50:59
IonoBias output directed to log file IonoBias.log
IonoBias timing: 6.210 seconds.
\end{lstlisting}

\begin{verbatim}
Output File Snippet

    3     3 Number (max, good) stations in this file
010101101100001111110111011101110
010101101100001111110111011101110
010100101100001111110111011101110
Npt  9737 Sta 85408 LLH    30.2160   262.2746   163.4226
1021      0.0   0.00000 -463513.64930 0.32    0.000      1  1   1
1021      0.0   0.00000 -463513.64930 0.32    0.000      1 14   1
1021      0.0   0.00000 -463513.64930 0.32    0.000      1 15   1
1021      0.0   0.00000 -463513.64930 0.32    0.000      1 21   1
1021      0.0   0.00000 -463513.64930 0.32    0.000      1 22   1
1021      0.0   0.00000 -463513.64930 0.32    0.000      1 25   1
1021      0.0   0.00000 -463513.64930 0.32    0.000      1 29   1
1021      0.0   0.00000 -463513.64930 0.32    0.000      1 30   1
1021     30.0   0.00000 -463513.52430 0.32    0.000      1  1   1
1021     30.0   0.00000 -463513.52430 0.32    0.000      1 14   1

Notes

Input can be either on the command line or put in a file and the input using the -f<file> option. The file is formatted just as if it were the command line.

-- NicoleQuindara - 03 Aug 2011