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RAS Toolbox List of modules and programs

To go to one of the below section click the desired link.

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(1) General Data Processing for (Yuma, SEM, SP3, RINEX) Data Files

xread_sem main program reading SEM almanac data and creating two data files
xread_sp3 main program reading the SP3 data file and creating three data files
xread_yuma main program reading Yuma almanac data and creating two data files
xwrite_yuma main program writing the Yuma format almanac file
xrinexn main program reads a RINEX 2 navigation message data file and writes the data into four text files
xrinexn_select main program reads a RINEX 2 navigation message data file and writes the data into four text files; the reduced almanac and ephemeris data files are storing the data within the selected time interval
xrinexo main program reads a RINEX 2 observation message file and writes the data into two text files (header and observation data only)
xrinexo_select main program reads a RINEX 2 observation message file and writes the data into two text files (header and observation data only); the reduced observation data file is storing only the data within the selected time interval
xrinex_obs main program executing graphs related to the satellites data provided into the reduced observation data file generated by the program xrinexo
xsv_pv_plot_almanac main program executing graphs related to the position and velocity when the reduced almanac data is provided
xsv_pv_plot_ephemeris main program executing graphs related to the position and velocity when the reduced ephemeris data is provided
xsv_pv_plot_sp3 main program executing graphs related to the position and velocity provided into a sp3 file

(2) GPS Orbit Data Analysis

xsv_comparison_almanac main program executing the satellites position/velocity comparison when two almanacs data are provided
xsv_comparison_almanac_ephemeris main program executing the satellites position/velocity comparison when almanac and ephemeris data are provided
xsv_comparison_almanac_sv_orbit main program executing the satellites position/velocity comparison when almanac and sp3 orbit data are provided
xsv_comparison_ephemeris main program executing the satellites position/velocity comparison when two ephemeris data are provided
xsv_comparison_ephemeris_sv_orbit main program executing the satellites position/velocity comparison when ephemeris and sp3 orbit data are provided
xsv_comparison_sv_orbit main program executing the satellites position/velocity comparison when two sp3 orbit data are provided

(3) User Position Determination

xuposr main program computing user position based on RINEX 2 navigation and observation data; no atmospheric corrections are applied
xuposra main program computing user position based on RINEX 2 navigation and observation data; iono and tropo corrections are applied
xuposrp main program computing user position based on RINEX 2 navigation and observation data; dual frequency P-code iono and tropo corrections are applied

(4) Utility Modules

convcon setting of most used conversion constants
elevaz computation of elevation and azimuth angles, ECEF unit line of sight vector and range
geoidh computation of WGS-84 geoid height correction
gpscon setting of most used GPS constants
ionoc computation of L1 iono correction for a specified user by using the Klobuchar model
pionoc computation of pseudorange corrected for ionospheric effects
prn2svn determination of the GPS satellite number for a specified GPS pseudorandom number
rms computation of root mean square (RMS) of a sample
selectd selection of the different elements from a specified array
svclockc computation of satellite clock correction
svn2prn determination of the GPS pseudorange number for a specified GPS satellite number
svpalm determination of ECEF satellite position based on almanac data
svpeph determination of ECEF satellite position based on ephemeris data
svpvalm determination of ECEF satellite position and velocity based on almanac data
svpveph determination of ECEF satellite position and velocity based on ephemeris data
tecefgd ECEF to geodetic coordinates (direct method)
tropoc1 computation of the troposheric correction for a specified user by using a simplified model
uposit computation of user's position from at least four ECEF satellite positions and the corresponding pseudoranges, by using a direct method
vecefenu transformation from ECEF to ENU frames for a given position vector and referenced latitude/longitude angles
wgs84con setting of most used WGS-84 constants
ymd2gps determination of (GPS week, GPS roll number, day of week) from (year, month, day)

 
 

Copyright(C) 1996-2010 L3NAV Systems, All Rights Reserved Worldwide.
 

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