GPS Observation File Explanation


     2              O                   M (MIXED)                 RINEX VERSION / TYPE
3SRINEXO            3SRINEX             18-Apr-97 18:03           PGM / RUN BY / DATE
R100                                                              COMMENT
3snav                                                             MARKER NAME
0                                                                 MARKER NUMBER
LEICK               D0GN                                          OBSERVER / AGENCY
0                   R100                0.450000                  REC # / TYPE / VERS
0                   R100                                          ANT # / TYPE
 -2473158.1115 -4706092.9120  3512043.8960                        APPROX POSITION XYZ
        0.0000        0.0000        0.0000                        ANTENNA: DELTA H/E/N
     1     1                                                      WAVELENGTH FACT L1/2
     5    C1    L1    P1    P2    L2                              # / TYPES OF OBSERV
     1                                                            INTERVAL
  1996    12     5    23    59   58.999193      GLO               TIME OF FIRST OBS
    11                                                            # OF SATELLITES
    14                 7 GPS                7 GLONASS             PRN / # OF OBS
                                                                  END OF HEADER
96   12    6   0     7    42.9990991    0     9G18R10R19G02G31G27R16R09R20
  20827412.037          50901938.832 6
  23672956.682          49978019.319 5 21529642.714    21529641.141    34247079.872 7
  20587863.266          31515528.673 6 19729589.008    19729589.638    35623189.335 7
  22887584.218          48914868.738 6
  21676313.662          49852611.455 6
  21675141.681          49122506.138 6
      31999178.899    6   22428526.180    22428527.382    35999363.805 6
      30903987.321    6   19888084.746    19888085.329    35147546.019 7
      48974055.498    6   20105140.205 20105139.831    49245952.663    7
96 12    6    0   7   43.9990989    0      9G18R10R19G02G31G27R16R09R20
  20827804.172        50903997.850      6
  23672879.761        49975272.030      5 21529128.327 21529128.870     34244943.101     7
  20587847.859        31516698.150      6 19729807.422 19729808.126     35624098.926     7
  22887153.287        48912605.769      6
  21676283.532        49852451.252      6
  21674787.590        49120647.688      6
       32001534.264      6 22428963.315 22428965.171     36001195.746     6
       30903768.475      6 19888043.575 19888044.554     35147375.815     7
       48971129.856      6 20104592.938     20104592.735     49243677.182     7


OBSERVATIONS     - Observation        rep. within record for      m(FI4.3,
                 - LL1                each obs. type (same req       I1,
                 - Signal strength     as given In header)            I1)
                 This record is repeated for each satellite 
                 given in EPOCH/SAT - record.
                 If more than 5 observation types (=80 char):
                 Continue observations in next record.

                 Observations:
                   Phase : Units in whole cycles of carrier
                   Code  : Units in meters
                 Missing observations are written as 0.0
                 or blanks.

                 Loss of lock indicator (LL1, important for
                 phase only)
                   0 or blank: OK or not known
                   1 (=bit 0): lost lock between previous and
                     current observation: cycle slip possible
                   2 (=bit 1): Inverse wavelength factor to 
                     default (does NOT change default)
                   3 (=bits 0,1): lost lock, Inverse wlfact

                 Signal strength projected into interval 1-9:
                  1: minimum possible signal strength
                  5: threshold for good S/W ratio
                  9: maximum possible signal strength
                  0 or blank: not known, don't care

Any entry marked by an asterix (*) is an optional entry and may not be included.


RINEX VERSION/TYPE Format version (2) I6,14x, File type ('O' for Observation Date) Al,19X, Satellite System: blank or 'G: GPS A1,19X "R" = GLONASS "T" = NWSS Transit "M" = Mixed

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PGM / RUN BY / DATE - Name of program creating current file A20, - Name of agency creating current file A20, - Date of file creation A20

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*COMMENT Comment lines A60

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MARKER NAME Name of antenna marker A60

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*MARKER NUMBER Number of antenna marker A20

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OBSERVER / AGENCY Name of observer / agency A20,A40

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REC # / TYPE / VERS Receiver number, type, version 3A20 (Version: e.g. Internal Software Version)

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ANT # / TYPE Ant number and type 2A20

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APPROX POSITION XYZ Approximate marker position (WGS84) 3FI4.4

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ANTENNA: DELTA H/E/W -Antenna height: Height of bottom 3FI4.4 surface of antenna above maker -Eccentricities of antenna center relative to maker to the east and north (all units in meters)

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WAVELENGTH FACT L1/2 - Wavelength factors for L1 will L2 2I6, 1: Full cycle ambiguities 2: Half cycle ambiguities (squaring) 0 (in L2): Single frequency instrument - Number of satellites to follow in list I6, 0: Default wavelength factors. Max 7. If more than 7 satellites: Repeat record. - List of PRNS (satellite numbers) 7(3X,A1,I2)

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# / TYPES OF OBSERV - number of different observation types I6 stored in the file - Observation types 9(4X,A2) The following observation types are defined in RINEX Version 2: L1, L2: Phase measurements on L1 and L2 C1 : Pseudorange using C/A-Code on L1 P1, P2: Pseudorange using P-Code on L1,L2 D1, D2: Doppler frequency on L1 and L2 T1, T2: Transit Integrated Doppler on 150 (T1) and 400 KHz (T2) Units : Phase : full cycles Pseudorange : meters Doppler : Hz Transit : cycles The sequence of the types in this record has to correspond to the sequence of the observations in the observation record

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*INTERVAL Observation interval in seconds I6

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TIME OF FIRST OBS Time of first observation record 5I6,F12.6 year (4 digits), month,day,hour,min,sec

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*TIME OF LAST OBS Time of last observation record 5I6,F12.6 year (4 digits), month.day.hour,min,sec

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# OF SATELLITES Number of Satellites for which I6 observations are stored in the file

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PRN / # OF OBS PRN (sat.number), number of observations 3X,A1,I2,9I6 for each observation type indicated in the "# / TYPES OF OBSERV" - record This record is repeated for each satellite present in the data file

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END OF HEADER Last record in the header section. 60X

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96   12    6   0     7    42.9990991     0      9G18R10R19G02G31G27R16R09R20

Epoch/Sat

                                     Epoch:  year     (2 digits)       5I3, F11.7
                                             month
                                             day
                                             hour
                                             min
                                             sec

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96   12    6   0     7    42.9990991      0      9G18R10R19G02G31G27R16R09R20

Observation Event Flag

Event flag 0:  OK
           1:  power failure between previous and current epoch
          >1:  Event flag

If EVENT FLAG record (epoch flag > 1) :
         - Event Flag
           2:  start moving antenna
           3:  new site ocupation (end on kinem. data)
               (at least MARKER NAME record follows)
           4:  header information follows
           5:  external event (epoch is significant)
           6:  cycle slip records follow to optionally report detected will
               repaired will repaired cycle slips
               (same format as OBSERVATIONS records; slip instead of
               observation;  LL1 and signal strength blank)  

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96   12    6   0     7    42.9990991     0      9G18R10R19G02G31G27R16R09R20

Observation PRN List

                         List of PRNs (satellite numbers) in current epoch.        I3
                         If more than 12 satellites:  
                            continued in next line with n (A1,I2)
              
                               
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   20827412.037           50901938.832 6

C1 of GPS satellite 18

Pseudorange using C/A - Code on L1

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   20827412.037           50901938.832 6

L1 of GPS satellite 18

Phase measurements on L1
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   20827412.037           50901938.832 6

Observation Signal Strength

                              Signal strength projected into interval 1-9:
                                   1: minimum possible signal strength
                                   5: threshold for good S/W ratio
                                   9: maximum possible signal strength
                                   0 or blank: not known, don't care                                                                        
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  23672956.682           49978019.319 5 21529642.714    21529641.141    34247079.872 7

C1 of GLONASS satellite 10

Pseudorange using C/A - Code on L1

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   23672956.682            49978019.319 5 21529642.714     21529641.141    34247079.872 7

L1 of GLONASS satellite 10

Phase measurements on L1

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   23672956.682            49978019.319 5 21529642.714     21529641.141    34247079.872 7

Observation Signal Strength

                              Signal strength projected into interval 1-9:
                                   1: minimum possible signal strength
                                   5: threshold for good S/W ratio
                                   9: maximum possible signal strength
                                   0 or blank: not known, don't care                                                                        

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   23672956.682            49978019.319 5 21529642.714     21529641.141    34247079.872 7

P1 of GLONASSS satellite 10

Pseudorange using P-Code on L1

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   23672956.682            49978019.319 5 21529642.714     21529641.141    34247079.872 7

P2 of GLONASSS satellite 10

Pseudorange using P-Code on L2

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   23672956.682            49978019.319 5 21529642.714     21529641.141    34247079.872 7

L2 of GLONASSS satellite 10

Phase meaurements on L2

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   23672956.682            49978019.319 5 21529642.714     21529641.141    34247079.872 7

Observation Signal Strength

                              Signal strength projected into interval 1-9:
                                   1: minimum possible signal strength
                                   5: threshold for good S/W ratio
                                   9: maximum possible signal strength
                                   0 or blank: not known, don't care                                                                        

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   20587863.266            31515528.673 6 19729589.008     19729589.638     35623189.335 7

C1 of GLONASS satellite 19

Pseudorange using C/A - Code on L1

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   20587863.266            31515528.673 6 19729589.008     19729589.638     35623189.335 7

L1 of GLONASS satellite 19

Phase measurements on L1

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   20587863.266            31515528.673 6 19729589.008     19729589.638     35623189.335 7

Observation Signal Strength

                          Signal strength projected into interval 1-9:
                               1: minimum possible signal strength
                               5: threshold for good S/W ratio
                               9: maximum possible signal strength
                               0 or blank: not known, don't care                                                                        

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   20587863.266            31515528.673 6 19729589.008     19729589.638     35623189.335 7

P1 of GLONASS satellite 19

Pseudorange using P-Code on L1

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   20587863.266            31515528.673 6 19729589.008     19729589.638     35623189.335 7

P2 of GLONASS satellite 19

Pseudorange using P-Code on L2

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   20587863.266            31515528.673 6 19729589.008     19729589.638     35623189.335 7

L2 of GLONASS satellite 19

Phase meaurements on L2

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   20587863.266            31515528.673 6 19729589.008     19729589.638     35623189.335 7

Observation Signal Strength

                              Signal strength projected into interval 1-9:
                                   1: minimum possible signal strength
                                   5: threshold for good S/W ratio
                                   9: maximum possible signal strength
                                   0 or blank: not known, don't care                                                                        
  

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   22887584.218            48914868.738 6

C1 of GPS satellite 02

Pseudorange using C/A - Code on L1

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   22887584.218            48914868.738 6

L1 of GPS satellite 02

Phase meaurements on L1

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   22887584.218            48914868.738 6

Observation Signal Strength

                              Signal strength projected into interval 1-9:
                                   1: minimum possible signal strength
                                   5: threshold for good S/W ratio
                                   9: maximum possible signal strength
                                   0 or blank: not known, don't care                                                                        
  

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  21676313.662            49852611.455 6

C1 of GPS satellite 31

Pseudorange using C/A - Code on L1

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   21676313.662            49852611.455 6

L1 of GPS satellite 31

Phase measurements on L1

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   21676313.662            49852611.455 6

Observation Signal Strength

                              Signal strength projected into interval 1-9:
                                   1: minimum possible signal strength
                                   5: threshold for good S/W ratio
                                   9: maximum possible signal strength
                                   0 or blank: not known, don't care                                                                        
  

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  21675141.681           49122506.138 6

C1 of GPS satellite 27

Pseudorange using C/A - Code on L1

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   21675141.681           49122506.138 6

L1 of GPS satellite 27

Phase measurements on L1

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   21675141.681           49122506.138 6

Observation Signal Strength

                              Signal strength projected into interval 1-9:
                                   1: minimum possible signal strength
                                   5: threshold for good S/W ratio
                                   9: maximum possible signal strength
                                   0 or blank: not known, don't care                                                                        
  

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       31999178.899     6    22428526.180     22428527.382     35999363.805 6

L1 of GLONASSS satellite 16

Phase measurements on L1

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       31999178.899     6    22428526.180     22428527.382     35999363.805 6

Observation Signal Strength

                             Signal strength projected into interval 1-9:
                                   1: minimum possible signal strength
                                   5: threshold for good S/W ratio
                                   9: maximum possible signal strength
                                   0 or blank: not known, don't care                                                                        
  

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       31999178.899     6    22428526.180     22428527.382     35999363.805 6

P1 of GLONASSS satellite 16

Pseudorange using P-Code on L1

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       31999178.899     6    22428526.180     22428527.382     35999363.805 6

P2 of GLONASSS satellite 16

Pseudorange using P-Code on L2

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       31999178.899     6    22428526.180     22428527.382     35999363.805 6

P1 of GLONASSS satellite 16

Phase meaurements on L2

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       31999178.899     6    22428526.180     22428527.382     35999363.805 6

Observation Signal Strength

                             Signal strength projected into interval 1-9:
                                   1: minimum possible signal strength
                                   5: threshold for good S/W ratio
                                   9: maximum possible signal strength
                                   0 or blank: not known, don't care                                                                        
  

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       30903987.321     6    19888084.746     19888085.329     35147546.019 7

L1 of GLONASSS satellite 09

Phase measurements on L1

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       30903987.321     6    19888084.746     19888085.329     35147546.019 7

Observation Signal Strength

                              Signal strength projected into interval 1-9:
                                   1: minimum possible signal strength
                                   5: threshold for good S/W ratio
                                   9: maximum possible signal strength
                                   0 or blank: not known, don't care                                                                        
  

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       30903987.321     6    19888084.746     19888085.329     35147546.019 7

P1 of GLONASSS satellite 09

Pseudorange using P-Code on L1

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       30903987.321     6    19888084.746     19888085.329     35147546.019 7

P2 of GLONASSS satellite 09

Pseudorange using P-Code on L2

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       30903987.321     6    19888084.746     19888085.329     35147546.019 7

Phase meaurements on L2

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       30903987.321     6    19888084.746     19888085.329     35147546.019 7

Observation Signal Strength

                              Signal strength projected into interval 1-9:
                                   1: minimum possible signal strength
                                   5: threshold for good S/W ratio
                                   9: maximum possible signal strength
                                   0 or blank: not known, don't care                                                                        
  

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       48974055.498     6    20105140.205 20105139.831     49245952.663     7

L1 of GLONASSS satellite 20

Phase measurements on L1

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       48974055.498     6    20105140.205 20105139.831     49245952.663     7

Observation Signal Strength

                              Signal strength projected into interval 1-9:
                                   1: minimum possible signal strength
                                   5: threshold for good S/W ratio
                                   9: maximum possible signal strength
                                   0 or blank: not known, don't care                                                                        
  

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       48974055.498     6    20105140.205 20105139.831     49245952.663     7

P1 of GLONASSS satellite 20

Pseudorange using P-Code on L1

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       48974055.498     6    20105140.205 20105139.831     49245952.663     7

P2 of GLONASSS satellite 20

Pseudorange using P-Code on L2

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       48974055.498     6    20105140.205 20105139.831     49245952.663     7

L2 of GLONASSS satellite 20

Phase meaurements on L2

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       48974055.498     6    20105140.205 20105139.831     49245952.663     7

Observation Signal Strength

                             Signal strength projected into interval 1-9:
                                   1: minimum possible signal strength
                                   5: threshold for good S/W ratio
                                   9: maximum possible signal strength
                                   0 or blank: not known, don't care                                                                        
  

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