Bernese GPS Software Version 5.0 - Bernese GNSS Software

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7. Parameter Estimation where Q 11 refers to the inverted normal equation matrix block referring to the non-epoch parameters. Multiplication with the variance factor gives the variance-covariance information for the epoch parameter i. With option SIMPLIFIED only the variance information of the epoch parameters are considered, i.e., based on the equation Q ii ≃ N −1 ii . (7.38) This means that the statistical errors of the non-epoch parameters are ignored for the computation of the variance-covariance information of the epoch-parameters. Their error information will, therefore, be too optimistic. When selecting the option it has to be considered, however, that the computation of the errors according to Eqn. (7.37) may be very CPU time- and memory-intensive. It has to be stated clearly that the option for computing the variance-covariance information has no impact on the estimated values of the epoch parameters. Only the reported formal errors are affected. In case that epoch parameters are pre-eliminated epoch-wise it makes sense to use a priori scaling of normalized residuals (option NORM APRIORI in “Type of computed residuals” in panel “GPSEST 3.1: General Options 1”, see Section 7.4.4). 7.6 Flow Diagram of Program GPSEST Figure 7.3 shows the flow diagram of the actions performed by program GPSEST. The core of the program is (1) the loop over all epochs in which the observations are read, the partials are computed and the normal equation is accumulated and (2) the inversion of the normal equation and computation of the solution. The diagram indicates at which points the parameter pre-elimination of different types take place. 7.7 Special Applications 7.7.1 Orbit Determination for Low Earth Orbiters 7.7.1.1 Preparation for Processing The Bernese GPS Software Version 5.0 allows to compute precise orbits for Low Earth Orbiters (LEOs) equipped with GPS receivers. In order to ensure that the software recognizes a receiver as spaceborne and gets the necessary additional information, the satellite has to appear with a well-defined name in several files: • The satellite may appear in section TYPE 001: RENAMING OF STATIONS in the station information file (description in Section 22.8.3) in order to rename the satellite/receiver name from the RINEX file to a well-defined satellite name which is used in all other files (see Section 4.2.3). • The satellite (with the translated name) has to be listed with the marker type SPACE- BORNE in section TYPE 005: HANDLING STATION TYPES in the station information file. Throughout the software, this entry defines a spacecraft mounted receiver. As a Page 154 AIUB
parameter setup loop sessions/files loop all epochs process the epoch parameter preelimination parameter preelimination solve normal equation save result files compute residuals ambiguity resolution parameter preelimination store NEQ-file 7.7 Special Applications - read and check input options - initialize the processing - setup all parameters except epoch parameters (preelimination=EVERY_EPOCH) select all files to be processed together: - correlations=CORRECT: all files of a session - correlations=BASELINE: one single file - setup the epoch parameters (preelimination=EVERY_EPOCH) - read and process all observations of the epoch, compute all partials - update normal equation - write partials of all observations to a scratch file - preeliminate epoch parameters (preelimination=EVERY_EPOCH) - preeliminate ambiguities, if possible (preelimination=AS_SOON_AS_POSSIBLE) - preeliminate parameters (preelimination=EVERY_SESSION) - read partials of the obervations from the scratch file - introduce the estimates for the parameters from the solution - solve for the epoch parameters (preelimination=EVERY_EPOCH) - compute residuals several iterations for: - resolve double-difference ambiguities to integer values - solve the normal equation of all parameters - preeliminate parameters (preelimination=PRIOR_TO_NEQ_SAVING) Figure 7.3: Flow diagram of actions performed by program GPSEST. Bernese GPS Software Version 5.0 Page 155
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Bernese GPS Software Version 5.0 Ed
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Bernese GPS Software Version 5.0 As
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Contents 2.3.6.1 Ionosphere-Free Li
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Contents 6.3.3 Kinematic Stations .
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Contents 9.4.4 Pre-Elimination Opti
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Contents 13.2 How to Correct P1-P2
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Contents 18.3.2 Command Bar . . . .
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Contents 20.4 Description of the Pr
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Contents 22.8.2 Station Abbreviatio
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Contents Page XVI AIUB
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List of Figures 5.1 Flow diagram of
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List of Figures 13.3 P1-C1 code bia
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List of Figures 22.20 Tabular orbit
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List of Tables 12.2 Influences of t
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1. Introduction and Overview • bu
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1. Introduction and Overview Table
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1. Introduction and Overview • Th
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1. Introduction and Overview The Be
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1. Introduction and Overview for Ca
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2. Fundamentals 2.1.1 GPS System De
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2. Fundamentals Table 2.2: Componen
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2. Fundamentals Clock correction [n
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2. Fundamentals Figure 2.5: GLONASS
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2. Fundamentals Table 2.6: GLONASS
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2. Fundamentals In contrast to the
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2. Fundamentals 2.2 GNSS Satellite
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2. Fundamentals 2.2.2.1 The Kepleri
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2. Fundamentals Table 2.9: Perturbi
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2. Fundamentals R.A. of Ascending N
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2. Fundamentals where aROCK is the
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2. Fundamentals By taking the deriv
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2. Fundamentals δi error of satell
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2. Fundamentals Ionospheric refract
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2. Fundamentals 2.3.6.1 Ionosphere-
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2. Fundamentals Table 2.10: Linear
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3. Campaign Setup variable to the f
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3. Campaign Setup Figure 3.1: Examp
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3. Campaign Setup In this section w
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3. Campaign Setup 3.5 Processing Ov
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4. Import and Export of External Fi
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5. Preparation of Earth Orientation
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6. Data Preprocessing Preprocessing
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Page 196 and 197: 8. Initial Phase Ambiguities and Am
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9. Combination of Solutions Table 9
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9. Combination of Solutions The poi
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9. Combination of Solutions (2) Tra
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9. Combination of Solutions Step 1:
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10. Station Coordinates and Velocit
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11. Troposphere Modeling and Estima
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12. Ionosphere Modeling and Estimat
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13. Differential Code Biases Promin
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13. Differential Code Biases Figure
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13. Differential Code Biases Figure
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13. Differential Code Biases ======
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13. Differential Code Biases Page 2
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14. Clock Estimation τ (BRUS-PTBB)
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14. Clock Estimation Here the limit
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14. Clock Estimation to zero. All c
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14. Clock Estimation #OBS : Number
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14. Clock Estimation 14.3 Clock RIN
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14. Clock Estimation cessed if CCRN
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14. Clock Estimation RINEX files th
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14. Clock Estimation the clock valu
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14. Clock Estimation SINGLE POINT P
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15. Estimation of Satellite Orbits
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16. Antenna Phase Center Offsets an
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17. Data Simulation Tool GPSSIM 17.
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17. Data Simulation Tool GPSSIM The
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17. Data Simulation Tool GPSSIM The
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17. Data Simulation Tool GPSSIM Res
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18. The Menu System 18.2 Starting t
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18. The Menu System 18.3.1 Menu Bar
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18. The Menu System 18.3.5 Panel Co
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18. The Menu System the menu the ne
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18. The Menu System Table 18.1: Pre
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18. The Menu System 18.5.3 System E
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18. The Menu System 18.7 Change Opt
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18. The Menu System 18.9 Technical
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18. The Menu System ... ! Environme
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18. The Menu System The keyword ENV
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18. The Menu System ! List of Remai
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18. The Menu System The MENUAUX-mec
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18. The Menu System Keyword values
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19. Bernese Processing Engine (BPE)
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20. Processing Examples inspect the
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20. Processing Examples 20.3.1 How
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20. Processing Examples • (option
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20. Processing Examples PID 111 PRE
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20. Processing Examples 20.4.1.5 Ta
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20. Processing Examples 20.4.1.7 Cr
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20. Processing Examples 20.4.2.1 Co
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20. Processing Examples appears in
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20. Processing Examples PID 313 MPR
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20. Processing Examples Further rea
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20. Processing Examples # # Create
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20. Processing Examples PID 101 GPS
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20. Processing Examples The RINEX n
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20. Processing Examples # # Preproc
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20. Processing Examples the loop, d
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20. Processing Examples PID 903 CLK
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20. Processing Examples and IGS 00B
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20. Processing Examples • Save th
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20. Processing Examples PID 321 GPS
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20. Processing Examples PID 301 CLK
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21. Program Structure $C / %C% PGM
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21. Program Structure (program GPSE
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21. Program Structure continued fro
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21. Program Structure ! -----------
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22. Data Structure "Program" Area $
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22. Data Structure Table 22.1: List
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22. Data Structure 22.4.2 Geodetic
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22. Data Structure 22.4.4 Antenna P
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Page 484 AIUB ANTENNA PHASE CENTER
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22. Data Structure 22.4.5 Satellite
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22. Data Structure 22.4.6 Satellite
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22. Data Structure DIFFERENCE OF GP
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22. Data Structure 22.4.9 Subdaily
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22. Data Structure EGM96 EGM96, VER
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22. Data Structure SINEX : OPTION I
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22. Data Structure 22.4.16 Panel Up
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22. Data Structure 22.6.2 Header an
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22. Data Structure 15 Antenna type(
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22. Data Structure SVN-NUMBER= 2 ME
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22. Data Structure -1 2 1 5 TITLE :
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22. Data Structure Used by: ORBGEN
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22. Data Structure 53064.00 53065.0
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22. Data Structure CODE’S MONTHLY
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22. Data Structure Table 22.4: Stat
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22. Data Structure (3) TYPE 003: HA
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22. Data Structure 22.8.4 Station P
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22. Data Structure Remarks: • Eac
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22. Data Structure The following st
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22. Data Structure Table 22.7: List
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22. Data Structure AJAC $$ FES2004
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22. Data Structure Station sigma fi
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22. Data Structure GOPE 11502M002 Z
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22. Data Structure 22.8.18 Receiver
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22. Data Structure CODE RAPID 3-DAY
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22. Data Structure 22.9.3 Meteo and
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22. Data Structure IONOSPHERE MODEL
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22. Data Structure 22.10 Miscellane
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22. Data Structure 22.10.4 Variance
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22. Data Structure 22.10.5 Normal E
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22. Data Structure 22.10.7 Observat
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22. Data Structure Created by: Each
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22. Data Structure ----------------
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22. Data Structure 22.10.17 BPE log
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23. Installation Guide 23.1.2 Conte
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23. Installation Guide 23.1.3.2 Ins
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23. Installation Guide BERN50 : $C
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23. Installation Guide If you have
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23. Installation Guide To make the
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23. Installation Guide List of Inst
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23. Installation Guide 23.2.4 Confi
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23. Installation Guide Configure me
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23. Installation Guide ${P}/EXAMPLE
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23. Installation Guide To recompile
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23. Installation Guide Page 574 AIU
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24. The Step from Version 4.2 to Ve
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BIBLIOGRAPHY Bock, H. (2004), Effic
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BIBLIOGRAPHY Janes, H. W., R. B. La
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BIBLIOGRAPHY Schaer, S. (1998), COD
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BIBLIOGRAPHY Page 588 AIUB
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INDEX OF PROGRAMS NEQ2ASC, 207, 541
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Index of Program Panels CODSPP 2: I
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Index of Program Panels MKCLUS 3: R
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INDEX OF KEYWORDS Antenna verificat
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INDEX OF KEYWORDS Cluster definitio
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INDEX OF KEYWORDS variance-covarian
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INDEX OF KEYWORDS orbit products, 1
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INDEX OF KEYWORDS Multi-session sol
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INDEX OF KEYWORDS Orbital elements
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INDEX OF KEYWORDS Receiver antenna
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INDEX OF KEYWORDS orbit modeling, 9
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INDEX OF KEYWORDS WGS-84, 19, 88, 2
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