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The svnav.dat file effectively contains a description of the physical characteristics of the GPS satellites. Ignoring the two descriptive, header lines which begin this file, each line contains:
Example
NSN/PRN #s, masses, and yaw rates satellites. Updated by R. King 20 September 96 PRN NS BLK MASS(G) BIASED YAW RATE YR MO DY HR MN (Biased Y: normal, A: anti-normal, P: +ive only, N: -ive only, U: unbiased ) 4, 1 1 453800.0 U 0.1990 78 02 22 00 00 7, 2 1 453800.0 U 0.1990 78 05 13 00 00 6, 3 1 453800.0 U 0.1990 78 10 06 00 00 8, 4 1 440900.0 U 0.1990 78 12 10 00 00 5, 5 1 462600.0 U 0.1990 80 02 09 00 00 9, 6 1 462600.0 U 0.1990 80 04 26 00 00 11, 8 1 522200.0 U 0.1990 83 08 10 00 00 13, 9 1 520400.0 U 0.1990 84 07 19 00 00 13, 9 1 520400.0 Y 0.1990 94 06 06 00 00 12, 10 1 519800.0 U 0.1990 84 10 03 00 00 3, 11 1 521800.0 U 0.1990 85 10 30 00 00 3, 11 1 521800.0 Y 0.1990 94 06 06 00 00 2, 13 2 878200.0 U 0.1130 89 08 10 00 00 2, 13 2 878200.0 Y 0.1130 93 01 01 00 00 2, 13 2 878200.0 N 0.1130 95 07 05 01 10 2, 13 2 878200.0 P 0.1130 95 11 17 00 00 14, 14 2 887400.0 U 0.0870 89 04 15 00 00 14, 14 2 887400.0 Y 0.0870 95 01 31 23 00 14, 14 2 887400.0 U 0.0870 95 02 08 02 00
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