Overview | Specifications | Program Execution | Parameter Estimator | Plot Data | Utilities | Data Files | Libraries
GPS Precise Analysis Software GpsTools: Data Files
Directory Structure | Data Files | Output Files | File Format of Clean Observation Data | File Format of Estimation Results

Directory Structure

<install_directory> \ Command/Library Function m-files
　 \ private Private Command/Library Function m-files
　 \ mexsrc Library Function C-Mex Source Programs
　 \ data Data Files
　 \ parames Sample Processing Parameter Files
　 \ help Help/Document Files
　 \ settings Default Settings/Saved Settings
　 \ util Utilities
　 \ history Processing History
　 \ test Test Programs/Data
(<install_directory> : installed directory of program package (gt_<ver>))

Data Files

File Format Content
utc_tai.txt csv UTC-TAI offset parameters
sats_params.txt csv Satellite parameters
rcvs_params.txt csv Receiver parameters
rcvs_poss.txt csv Approximate positions of stations
rcvs_noncc.txt text List of NON-CC type receivers
dcbs_p1c1.m m-file Satellite P1-C1 DCB parameters
prm_gpssrcs.m m-file URL addresses of data/products for downloader
ants_alias.txt csv Antenna alias defintion parameters
gshhs_w.mat mat-file NOAA GSHHS coastline data
gshhs_c.mat mat-file NOAA GSHHS coastline data
gshhs_l.mat mat-file NOAA GSHHS coastline data
gshhs_i.mat mat-file NOAA GSHHS coastline data
geoid_gsi2000.mat mat-file GSI Japanese Geoid 2000 model grid data
geoid_egm96.mat mat-file NASA GSFC/NIMA EGM96 geoid model grid data
ephem2000.405 binary NASA JPL DE405 planetary ephemeris (2000-2020)
igs_01.pcv csv IGS standard antenna phase center offset/variation (before 2006/11/4)
igs05.atx ANTEX IGS standard antenna phase center offset/variation (after 2006/11/5)
oload_igs.blq BLQ Ocean loading coefficients for IGS stations
oload_gsi.blq BLQ Ocean loading coefficients for GSI GEONET stations

Output Files

File name Format Contents
obsc_{rcv}_yyyymmddhh.mat mat-flle Clean observation data
eph{fb}_{sat}_yyyymmddhh.mat mat-flle Estimation results of satellite orbit
clk{fb}_{sat}_yyyymmddhh.mat mat-flle Estimation results of satellite clock
pos{fb}_{rcv}_yyyymmddhh.mat mat-flle Estimation results of receiver position
clk{fb}_{rcv}_yyyymmddhh.mat mat-flle Estimation results of receiver clock
zpd{fb}_{rcv}_yyyymmddhh.mat mat-flle Estimation results of tropospheric paratmeters
bcp{fb}_{rcv}_yyyymmddhh.mat mat-flle Estimation results of carrier-phase ambiguity
res{fb}_{rcv}_yyyymmddhh.mat mat-flle Estimation residuals
{rcv} : receiver name, {sat} : satellite name (GPS01=GPS PRN1,GPS02=GPS PRN2,...),
{fb}: estimation direction (f=forward, b=backward),
yyyy : year (4digit), mm : month, dd : day *, hh : hour **

* If the file contains estimation results of multiple days, the file name is determined by the estimation start date.
** Integer multiplied value of Processing/Estimation Unit Time (hr).
For example, in case of Estimation start/end date/time=2004/12/3 4:00-9:30, Processing Unit Time=3 hr and Estimation interval=1 min,
file *2004120303.mat contains data of 4:00-5:59, file *2004120306.mat contains data of 6:00-8:59 and file *2004120309.mat contains
data of 9:00-9:30.

File Format of Clean Observation Data

Variable

Contents

Notes

epoch

start epoch [year,month,day,hour,min,sec]

 　

time

time vector relative to epoch (sec)

 　

sats

satellite list (cell array)

 　

rcv

receiver name

 　

data

observation data
data(n,1): time(n) L1 carrier phase (cycle)
data(n,2): time(n) L2 carrier phase (cycle)
data(n,3): time(n) L1 pseudorange (m)
data(n,4): time(n) L2 pseudorange (m)
data(n,5): time(n) LC smoothed code (m)
data(n,6): time(n) L1 smoothed code (m)
data(n,7): time(n) L2 smoothed code (m)

 　

index

observation data index [s,0,f;...]
(s=satellite index,f=1:arc-start,2:arc-end)

 　

rstat

receiver states
rstat(n,1): time relative to epoch (sec)
rstat(n,2:7):receiver pos/vel (m,m/sec)
rstat(n,8): receiver clock bias (m)

 　

azel

satellite azimath/elevation angle (rad)
azel(n,1): satellite azimath angle (rad)
azel(n,2): satellite elevation angle (rad)

 　

slip

cycle-slip positions [t,s,f,...]
(t=time, s=satellite index, f=1:mw, 2:gf, 3:if, 4:td)

 　

rpos

receiver approx. position (m)(ecef)[x;y;z]

 　

adel

receiver antenna delta(up/east/north) (m)

 　

atype

receiver antenna type

 　

rtype

receiver model type

 　

　

File Format of Estimation Results

Variable

Contents

Notes

epoch

start epoch [year,month,day,hour,min,sec]

 　

time

time vector relative to epoch (sec)

 　

sat

satellite name

 　

rcv

receiver name

 　

data

estimation results
data(n,:) : time(n) estimation results)

 　

covs

estimation results variance
covs(n,:) : time(n) estimation results variance

 　

prm

processing parameters struct

 　

　

Copyright (C) 2004-2008, T.Takasu, All Rights Reserved.