epochs.doc

这是国外关于卫星导航方面一书的源代码

Epoch files S1EPO and S2EPO
------------------------------
contains 1 + 12 = 13 columns, where
column   1      shows the epoch following RINEX definition 
column   2-13   show the PRN numbers of the satellites for relating
                the code- and carrier phase observables in the 
                observation files S1L1,S1L2,S1P1,S1P2 and S1C1
                (and for S2 in the same way). 

Every row stands for the observables of one epoch.

Clearifying: The number 10 in the 3rd column of a special row means,
that in the 2nd column of the same row of the observation files
you can find the realting the satellite with the PRN 10, 
the data relating the satellite with PRN 19 you can find in the 4th column 
of the same row and so on ... for the example below (1st row).

All in all there are 12 channels for use, satellite risings or falls 
can produce a change of the channel (=column) for one or some 
satellites (see below).

 432810.0000000   2  10  13  19  26  27   0   0   0   0   0   0
 432840.0000000   2  10  13  19  26  27   0   0   0   0   0   0
 432870.0000000   2  10  13  19  26  27   0   0   0   0   0   0
 432900.0000000   2  10  13  19  26  27   0   0   0   0   0   0
 432930.0000000   2  10  13  19  26  27   0   0   0   0   0   0
 432960.0000000   2  10  13  19  26  27   0   0   0   0   0   0
 432990.0000000   2  10  13  19  26  27   0   0   0   0   0   0
 433020.0000000   2  10  13  19  26  27   0   0   0   0   0   0
 433050.0000000   2  10  13  19  26  27   0   0   0   0   0   0
 433080.0000000   2  10  13  19  26  27   0   0   0   0   0   0
 433110.0000000   2  10  13  19  26  27   0   0   0   0   0   0
 433140.0000000   2  10  13  26  27   0   0   0   0   0   0   0
 433170.0000000   2  10  13  26  27   0   0   0   0   0   0   0
 433200.0000000   2  10  13  26  27   0   0   0   0   0   0   0
 433230.0000000   2  10  13  26  27   0   0   0   0   0   0   0
 433260.0000000   2  10  13  26  27   0   0   0   0   0   0   0
 433290.0000000   2  10  13  26  27   0   0   0   0   0   0   0
 433320.0000000   2  10  13  26  27   0   0   0   0   0   0   0
... 
...
 435990.0000000   2   9  10  13  26  27   0   0   0   0   0   0
 436020.0000000   2   9  10  13  26  27   0   0   0   0   0   0
 436050.0000000   2   9  10  13  26  27   0   0   0   0   0   0
 436080.0000000   2   9  10  13  26  27   0   0   0   0   0   0
 436110.0000000   2   9  10  13  26  27   0   0   0   0   0   0
 436140.0000000   2   9  10  13  26  27   0   0   0   0   0   0
 436170.0000000   2   9  10  13  26  27   0   0   0   0   0   0
 436200.0000000   2   9  10  13  26  27   0   0   0   0   0   0
 436230.0000000   2   7   9  10  13  26  27   0   0   0   0   0
 436260.0000000   2   7   9  10  13  26  27   0   0   0   0   0
 436290.0000000   2   7   9  10  13  26  27   0   0   0   0   0
...
...
 445980.0000000   5   7   8   9  21  23  26  30   0   0   0   0
 446010.0000000   5   7   8   9  21  23  26  30   0   0   0   0
 446040.0000000   5   7   8   9  21  23  26  30   0   0   0   0
 446070.0000000   5   7   8   9  21  23  26  30   0   0   0   0
 446100.0000000   5   7   8   9  21  23  26  30   0   0   0   0
 446130.0000000   5   7   8   9  21  23  26  30   0   0   0   0
 446160.0000000   5   7   8   9  21  23  26  30   0   0   0   0
 446190.0000000   5   7   8   9  21  23  26  30   0   0   0   0
 446220.0000000   5   7   8   9  21  23  26  30   0   0   0   0
 446250.0000000   5   7   8   9  21  23  26  30   0   0   0   0
 446280.0000000   5   7   8   9  21  26  30   0   0   0   0   0
 446310.0000000   5   7   8   9  21  26  30   0   0   0   0   0
 446340.0000000   5   7   8   9  21  26  30   0   0   0   0   0
 446370.0000000   5   7   8   9  26  30   0   0   0   0   0   0
 446400.0000000   5   7   8   9  26  30   0   0   0   0   0   0
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(c) iapg 1997 zeb