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Bernese GPS Software Version 5.0 - Bernese GNSS Software

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6.3 Receiver Clock Synchronization and Preprocessing of Code Observations<br />

CODSPP summarizes the detected outliers at the end of the program output file:<br />

*******************************************************************************<br />

SUMMARY OF BAD OBSERVATIONS<br />

*******************************************************************************<br />

MAXIMUM RESIDUAL DIFFERENCE ALLOWED : 50.00 M<br />

CONFIDENCE INTERVAL OF F*SIGMA WITH F: <strong>5.0</strong>0<br />

OUTLIERS MARKED IN THE CODE OBSERVATION FILES<br />

NUMBER OF BAD OBSERVATION PIECES : 11<br />

NUMB FIL STATION TYP SAT FROM TO #EPO<br />

-------------------------------------------------------------------------------<br />

1 1 KIR0 10422M001 OUT 26 03-12-12 06:49:30 03-12-12 08:27:30 197<br />

2 1 KIR0 10422M001 OUT 26 03-12-12 08:28:30 03-12-12 08:34:00 12<br />

3 1 KIR0 10422M001 OUT 26 03-12-12 08:35:00 03-12-12 08:41:30 14<br />

4 1 KIR0 10422M001 OUT 26 03-12-12 08:42:30 03-12-12 08:44:30 5<br />

5 1 KIR0 10422M001 OUT 26 03-12-12 08:46:00 03-12-12 08:49:30 8<br />

6 1 KIR0 10422M001 OUT 26 03-12-12 08:50:30 03-12-12 08:51:00 2<br />

7 1 KIR0 10422M001 OUT 26 03-12-12 08:52:00 03-12-12 08:53:30 4<br />

8 1 KIR0 10422M001 OUT 26 03-12-12 08:56:30 03-12-12 08:57:30 3<br />

9 1 KIR0 10422M001 OUT 26 03-12-12 08:58:30 03-12-12 08:58:30 1<br />

10 1 KIR0 10422M001 OUT 26 03-12-12 08:59:30 03-12-12 09:00:00 2<br />

11 1 KIR0 10422M001 OUT 26 03-12-12 09:03:30 03-12-12 09:04:00 2<br />

-------------------------------------------------------------------------------<br />

The above example reports that outliers were marked in the code observation files. The<br />

complete list of reasons (column TYP) why CODSPP could not use the listed observations<br />

includes:<br />

OUT rejected by outlier detection algorithm described above,<br />

ORB no orbit information available for the satellite,<br />

CRX satellite excluded in the “Satellite problem” file (description in Section 6.7.2 and 22.4.6),<br />

CLK no satellite clock available for the epoch, and<br />

KIN the minimum redundancy for the outlier detection in the kinematic mode was not<br />

reached (see below).<br />

6.3.3 Kinematic Stations<br />

CODSPP is able to handle kinematic stations (select KINEMATIC in option “Estimate coordinates”<br />

in panel “CODSPP 2: Input Options”). A new set of coordinates is then estimated<br />

independently for each epoch. Each epoch solution is computed iteratively; the a priori<br />

coordinates may be set to “0/0/0” if unknown. Only epoch parameters can be estimated<br />

in this case. In particular the time offset between <strong>GPS</strong> and GLONASS cannot be setup.<br />

Therefore, in case of mixed <strong>GPS</strong>/GLONASS files only <strong>GPS</strong> observations are considered for<br />

the estimation of kinematic coordinates.<br />

In the kinematic mode outlier detection is performed epoch by epoch. The algorithm is<br />

slightly different from that used in the static mode: In a first step an epoch solution is<br />

computed iteratively. If the RMS of this solution is larger than a threshold (option “Max.<br />

<strong>Bernese</strong> <strong>GPS</strong> <strong>Software</strong> <strong>Version</strong> <strong>5.0</strong> Page 111

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