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Bernese GPS Software Version 5.0 - Bernese GNSS Software

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3. Campaign Setup<br />

3.5 Processing Overview<br />

For the processing you need a priori coordinates and velocities for all your stations. To finish<br />

the campaign setup you must add the a priori coordinates and velocities for the new sites<br />

to the coordinate file. Therefore, the PPP procedure (example in Section 20.4.1) should be<br />

run in the current campaign.<br />

To prepare the PPP procedure, copy your RINEX observation files into the ORX-directory<br />

of the campaign. In addition precise orbit files, the corresponding Earth orientation parameters,<br />

and the clock RINEX file have to be transferred (e.g., from ftp://ftp.igs.org/<br />

igscb/product/wwww where wwww is the <strong>GPS</strong> week, see Section 4.12.2 for more details on<br />

downloading of IGS products). We refer to Section 20.4.1 for a detailed description of the<br />

PPP procedure.<br />

From this PPP procedure a complete set of a priori coordinates (IGS 00.CRD) and velocities<br />

(IGS 00.VEL) results in the directory ${P}/MYCAMP/STA. These files provide the a priori<br />

information for all further processing. If not done manually before the station name abbreviation<br />

table has been updated.<br />

The further processing of your data follows the strategy demonstrated in the processing<br />

examples in Chapter 20. The Tables 3.1 and 3.2 provide an overview on the main processing<br />

steps for a double- or a zero-difference analysis using <strong>Version</strong> <strong>5.0</strong> of <strong>Bernese</strong> <strong>GPS</strong> <strong>Software</strong>.<br />

Table 3.1: Processing steps for a double-difference solution.<br />

Processing step Involved programs Reference<br />

1 Data transfer, copy data into the campaign ftp Chapter 4<br />

2 PPP procedure to complete the list of a priori<br />

coordinates/velocities (if necessary)<br />

BPE example PPP.PCF Sec. 20.4.1<br />

3 Import data into <strong>Bernese</strong> format RXOBV3 Chapter 4<br />

4 Prepare Earth orientation and orbit<br />

information<br />

POLUPD, PRETAB, ORBGEN Chapter 5<br />

5 Data preprocessing CODSPP, SNGDIF, MAUPRP,<br />

<strong>GPS</strong>EST, RESRMS, SATMRK<br />

Chapter 6<br />

6 Make a first solution <strong>GPS</strong>EST Chapter 7<br />

7 Resolve ambiguities <strong>GPS</strong>EST Chapter 8<br />

8 Create normal equations <strong>GPS</strong>EST<br />

9 NEQ-based multisession solution ADDNEQ2 Chapter 9<br />

Table 3.2: Processing steps for a zero-difference solution.<br />

Processing step Involved programs Reference<br />

1 Data transfer, copy data into the campaign ftp Chapter 4<br />

2 PPP procedure to complete the list of a priori<br />

coordinates/velocities (if necessary)<br />

BPE example PPP.PCF Sec. 20.4.1<br />

3 Data preprocessing 1 RNXSMT Chapter 6<br />

4 Import data into <strong>Bernese</strong> format RXOBV3 Chapter 4<br />

5 Prepare orbit and Earth orientation<br />

information<br />

POLUPD, PRETAB, ORBGEN Chapter 5<br />

6 Data preprocessing 2 CODSPP, <strong>GPS</strong>EST, RESRMS,<br />

SATMRK<br />

Chapter 6<br />

7 Solution for epoch parameters and/or<br />

create normal equations<br />

<strong>GPS</strong>EST Chapter 7<br />

8 NEQ-based multisession solution ADDNEQ2 Chapter 9<br />

Page 50 AIUB

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