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Summary File

Overview

arc generates a summary of its processing. Historically called the "o_file" or "a_file", this contains such information as the satellites processed, the models used and eclipse times.

The o_file begins with a more general block of information which includes:

the o_file's name,
all on one line with descriptive header, the models selected:
- the gravity field,
- the radiation pressure model,
- the output ephemeris tablular interval (sec),
- the nominal integration interval (sec),
- the time frame,
- and the spatial reference frame,
the file containing the initial conditions for the satellites (g_file),
the yaw file,
the program version,
the epoch of the satellite initial conditions,
the starting epoch of the ephemeris,
the ending epoch of the ephemeris,
and the difference between Terrestrial Dynamic Time (TDT) and Coordinated Universal Time (UTC), in seconds, at the initial condition's epoch.

Example

 Output archive file: o.289           
 Grav Model  Rad Model  Tab Inter  Integ Inter  Time  Ref Frame            Precession
 ----------  ---------  ---------  -----------  ----  -------------------- ----------
      IGS92      RCKSV     1350.0     168.7500  UTC   INERTIAL     1950.0  IAU68

 Input ICs file: g.289           
 Output yaw file: y.289           

 9.26 of 95/05/12 10:05:00 (HP-UX)       

 Rock4 & 42 (t series) radiation pressure model SV-BODY parameterization

 Epoch of ICs, read from: g.289           
 Yr Mn Dy    Hr  Min Sec  JD    Sec of Day (UTC )
 96 10 15    11 59 49.  2450372 43189.00000000

 Input start time for observations: 
 Yr Mn Dy    Hr  Min Sec  JD    Sec of Day (UTC )
 96 10 14    20  0  0.  2450371 72000.00000000

 Input stop time for observations: 
 Yr Mn Dy    Hr  Min Sec  JD    Sec of Day (UTC )
 96 10 16     4  0  0.  2450373 14400.00000000

 TDT-UTC  at IC epoch   = 62.1840 sec

Information about each satellite is generated as that satellite is processed. These satellite specific blocks of information follow. Each block contains:

a separator line of astricks with the satellite PRN number,
the satellite ID, GPS block type, and mass,
the descriptive names of the initial conditions entered,
the initial conditions as entered in a standard format,
the corresponding keplerian orbital elements to the initial condition state vector,
the solar radiation pressure model coefficients,
the ID of the physical constants/standards used in processing this satellite,
pertinent times written to the "T-file", a scratch file containing information and the ephemeris for this satellite only, including:
- the time frame,
- the epoch of the initial conditions,
- the starting time,
- the ending time,
- the ephemeris tabular interval and nominal integration interval, both in seconds,
and eclipse information such as start/end times and durations. The eclipse information is labelled and self-explanatory except for the column labelled LAMBDA, the multiplication factor for the solar pressure (LAMBDA = 1.0 = no eclipse, LAMBDA = 0.0 = full eclipse).

Example

 ******************************* PRN  9 **********************************
 PRN  9 is a block 2 satellite and has a mass of  972900.0 grams

 ICs on g-file :  X    Y    Z    XDOT YDOT ZDOT XRAD YRAD      
 ICs integrated:                                               

 Satellite and ICs: NS39            
   .101352584367900D+05   .214344376924000D+05  -.122403518472800D+05
  -.287667011867700D+01  -.117959880747000D+00  -.256527515023900D+01
   .100000000000000D+01   .000000000000000D+00   .100000000000000D+01
 

 Sat   Se  mimjr Ax  Eccen'ty   Perigee      Inclin'n    Ascen.Node   Mn Anomaly           
         ___KM.___             DDD MM SS.S  DDD MM SS.S  DDD MM SS.S  DDD MM SS.S          
 NS39    26561.139    .005357    3 38 39.7   54  0 36.6  222 40 19.9  211 12 35.1

 RCKSV: Solar radiation pressure model coefficients 
 NS39                                          
         .1000D+01   .0000D+00   .1000D+01 

 IERS92/IGS Standards for model constants

 Times written to T-file header  (UTC )
 IC epoch:    96 10 15 11 59 49.000000
 Start   :  1996 10 14 16  7 19.000000
 Stop    :  1996 10 16  7 52 19.000000
 No. epochs:  107
 Tabular interval:  1350.0  Integration interval: 168.7500

                      PJD      LAMBDA  YR DOY  MO  DY  HR MIN PRN
 Start eclipse:  2450372.42956   .167  96 289  10  15  10  18 PRN  9
 Eclipsing:      2450372.41589   .221  96 289  10  15   9  58 PRN  9
 End eclipse:    2450372.41394  1.000  96 289  10  15   9  56 PRN  9

 Start eclipse:  2450371.92956   .607  96 288  10  14  22  18 PRN  9
 Eclipsing:      2450371.91979   .054  96 288  10  14  22   4 PRN  9
 Eclipsing:      2450371.91784   .841  96 288  10  14  22   1 PRN  9
 End eclipse:    2450371.91589  1.000  96 288  10  14  21  58 PRN  9

 Start eclipse:  2450372.91198   .995  96 289  10  15  21  53 PRN  9
 End eclipse:    2450372.93151  1.000  96 289  10  15  22  21 PRN  9
 
 PRN  9 Eclipse interval:  96 288 21 58   96 288 22 18  
 PRN  9 Eclipse interval:  96 289  9 56   96 289 10 18  
 PRN  9 Eclipse interval:  96 289 21 53   96 289 22 21

The summary file ends with:

the name of the output ephemeris.

Complete Example

 Output archive file: o.289           
 Grav Model  Rad Model  Tab Inter  Integ Inter  Time  Ref Frame            Precession
 ----------  ---------  ---------  -----------  ----  -------------------- ----------
      IGS92      RCKSV     1350.0     168.7500  UTC   INERTIAL     1950.0  IAU68

 Input ICs file: g.289           
 Output yaw file: y.289           

 9.26 of 95/05/12 10:05:00 (HP-UX)       

 Rock4 & 42 (t series) radiation pressure model SV-BODY parameterization

 Epoch of ICs, read from: g.289           
 Yr Mn Dy    Hr  Min Sec  JD    Sec of Day (UTC )
 96 10 15    11 59 49.  2450372 43189.00000000

 Input start time for observations: 
 Yr Mn Dy    Hr  Min Sec  JD    Sec of Day (UTC )
 96 10 14    20  0  0.  2450371 72000.00000000

 Input stop time for observations: 
 Yr Mn Dy    Hr  Min Sec  JD    Sec of Day (UTC )
 96 10 16     4  0  0.  2450373 14400.00000000

 TDT-UTC  at IC epoch   = 62.1840 sec

******************************* PRN  7 **********************************
 PRN  7 is a block 2 satellite and has a mass of  972900.0 grams

 ICs on g-file :  X    Y    Z    XDOT YDOT ZDOT XRAD YRAD      
 ICs integrated:                                               

 Satellite and ICs: NS37            
  -.255635664651100D+05   .547864607406000D+04  -.344702929773000D+04
  -.460912519120000D-01  -.229104850594000D+01  -.315806838501300D+01
   .100000000000000D+01   .000000000000000D+00   .100000000000000D+01
 

 Sat   Se  mimjr Ax  Eccen'ty   Perigee      Inclin'n    Ascen.Node   Mn Anomaly           
         ___KM.___             DDD MM SS.S  DDD MM SS.S  DDD MM SS.S  DDD MM SS.S          
 NS37    26561.724    .008625  222 46 12.9   55  8  0.3  342 37 58.2  326 56 27.5

 RCKSV: Solar radiation pressure model coefficients 
 NS37                                          
         .1000D+01   .0000D+00   .1000D+01 

 IERS92/IGS Standards for model constants

 Times written to T-file header  (UTC )
 IC epoch:    96 10 15 11 59 49.000000
 Start   :  1996 10 14 16  7 19.000000
 Stop    :  1996 10 16  7 52 19.000000
 No. epochs:  107
 Tabular interval:  1350.0  Integration interval: 168.7500


******************************* PRN  9 **********************************
 PRN  9 is a block 2 satellite and has a mass of  972900.0 grams

 ICs on g-file :  X    Y    Z    XDOT YDOT ZDOT XRAD YRAD      
 ICs integrated:                                               

 Satellite and ICs: NS39            
   .101352584367900D+05   .214344376924000D+05  -.122403518472800D+05
  -.287667011867700D+01  -.117959880747000D+00  -.256527515023900D+01
   .100000000000000D+01   .000000000000000D+00   .100000000000000D+01
 

 Sat   Se  mimjr Ax  Eccen'ty   Perigee      Inclin'n    Ascen.Node   Mn Anomaly           
         ___KM.___             DDD MM SS.S  DDD MM SS.S  DDD MM SS.S  DDD MM SS.S          
 NS39    26561.139    .005357    3 38 39.7   54  0 36.6  222 40 19.9  211 12 35.1

 RCKSV: Solar radiation pressure model coefficients 
 NS39                                          
         .1000D+01   .0000D+00   .1000D+01 

 IERS92/IGS Standards for model constants

 Times written to T-file header  (UTC )
 IC epoch:    96 10 15 11 59 49.000000
 Start   :  1996 10 14 16  7 19.000000
 Stop    :  1996 10 16  7 52 19.000000
 No. epochs:  107
 Tabular interval:  1350.0  Integration interval: 168.7500

                      PJD      LAMBDA  YR DOY  MO  DY  HR MIN PRN
 Start eclipse:  2450372.42956   .167  96 289  10  15  10  18 PRN  9
 Eclipsing:      2450372.41589   .221  96 289  10  15   9  58 PRN  9
 End eclipse:    2450372.41394  1.000  96 289  10  15   9  56 PRN  9

 Start eclipse:  2450371.92956   .607  96 288  10  14  22  18 PRN  9
 Eclipsing:      2450371.91979   .054  96 288  10  14  22   4 PRN  9
 Eclipsing:      2450371.91784   .841  96 288  10  14  22   1 PRN  9
 End eclipse:    2450371.91589  1.000  96 288  10  14  21  58 PRN  9

 Start eclipse:  2450372.91198   .995  96 289  10  15  21  53 PRN  9
 End eclipse:    2450372.93151  1.000  96 289  10  15  22  21 PRN  9
 
 PRN  9 Eclipse interval:  96 288 21 58   96 288 22 18  
 PRN  9 Eclipse interval:  96 289  9 56   96 289 10 18  
 PRN  9 Eclipse interval:  96 289 21 53   96 289 22 21  

******************************* PRN 10 **********************************
 PRN 10 is a block 2 satellite and has a mass of  972900.0 grams

 ICs on g-file :  X    Y    Z    XDOT YDOT ZDOT XRAD YRAD      
 ICs integrated:                                               

 Satellite and ICs: NS40            
  -.109300175639100D+05   .227769285314100D+05   .809244266497000D+04
  -.168186190934400D+01  -.185484574747800D+01   .296230137143700D+01
   .100000000000000D+01   .000000000000000D+00   .100000000000000D+01
 

 Sat   Se  mimjr Ax  Eccen'ty   Perigee      Inclin'n    Ascen.Node   Mn Anomaly           
         ___KM.___             DDD MM SS.S  DDD MM SS.S  DDD MM SS.S  DDD MM SS.S          
 NS40    26561.291    .001627  341 50 34.9   55 17 47.0  102 49  6.8   39 49  6.2

 RCKSV: Solar radiation pressure model coefficients 
 NS40                                          
         .1000D+01   .0000D+00   .1000D+01 

 IERS92/IGS Standards for model constants

 Times written to T-file header  (UTC )
 IC epoch:    96 10 15 11 59 49.000000
 Start   :  1996 10 14 16  7 19.000000
 Stop    :  1996 10 16  7 52 19.000000
 No. epochs:  107
 Tabular interval:  1350.0  Integration interval: 168.7500


 Output T file: u.289

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o_file.html
October 10, 2000
Steve Hilla