Header Records (14 cards) Header Record 1 -- starting day of data ---------------- 01-04 year, GPS time 06-07 month, GPS time 09-10 day, GPS time Header Record 2 -- point A, mark position ---------------- 01-04 4 character station ID, point A 18-30 X, meters 32-44 Y, meters 46-58 Z, meters 60-72 geodetic latitude, decimal degrees, positive north 74-86 geodetic longitude, decimal degrees, positive east 88-96 ellipsoidal height, meters, positive up Header Record 3 -- point A, ARP position ---------------- 01-16 16 character antenna ID, point A 18-30 X, meters 32-44 Y, meters 46-58 Z, meters 60-72 geodetic latitude, decimal degrees, positive north 74-86 geodetic longitude, decimal degrees, positive east 88-96 ellipsoidal height, meters, positive up Header Record 4 -- point A, L1 phase center position ---------------- 01-07 L1 antenna offset, (L1 ht. - ARP ht.), meters, point A 18-30 X, meters 32-44 Y, meters 46-58 Z, meters 60-72 geodetic latitude, decimal degrees, positive north 74-86 geodetic longitude, decimal degrees, positive east 88-96 ellipsoidal height, meters, positive up Header Record 5 -- point A, L2 phase center position ---------------- 01-07 L2 antenna offset, (L2 ht. - ARP ht.), meters, point A 18-30 X, meters 32-44 Y, meters 46-58 Z, meters 60-72 geodetic latitude, decimal degrees, positive north 74-86 geodetic longitude, decimal degrees, positive east 88-96 ellipsoidal height, meters, positive up Header Record 6 -- point A, L1 phase center variations ---------------- 02-05 L1 phase delay at 90 deg., units of 0.1 mm 07-10 " 85 deg., " 12-15 " 80 deg., " 17-20 " 75 deg., " 22-25 " 70 deg., " 27-30 " 65 deg., " 32-35 " 60 deg., " 37-40 " 55 deg., " 42-45 " 50 deg., " 47-50 " 45 deg., " 52-55 " 40 deg., " 57-60 " 35 deg., " 62-65 " 30 deg., " 67-70 " 25 deg., " 72-75 " 20 deg., " 77-80 " 15 deg., " 82-85 " 10 deg., " 87-90 " 5 deg., " 92-95 " 0 deg., " Header Record 7 -- point A, L2 phase center variations ---------------- 02-05 L2 phase delay at 90 deg., units of 0.1 mm 07-10 " 85 deg., " 12-15 " 80 deg., " 17-20 " 75 deg., " 22-25 " 70 deg., " 27-30 " 65 deg., " 32-35 " 60 deg., " 37-40 " 55 deg., " 42-45 " 50 deg., " 47-50 " 45 deg., " 52-55 " 40 deg., " 57-60 " 35 deg., " 62-65 " 30 deg., " 67-70 " 25 deg., " 72-75 " 20 deg., " 77-80 " 15 deg., " 82-85 " 10 deg., " 87-90 " 5 deg., " 92-95 " 0 deg., " Header Record 8 -- point B, mark position ---------------- 01-04 4 character station ID, point B 18-30 X, meters 32-44 Y, meters 46-58 Z, meters 60-72 geodetic latitude, decimal degrees, positive north 74-86 geodetic longitude, decimal degrees, positive east 88-96 ellipsoidal height, meters, positive up Header Record 9 -- point B, ARP position ---------------- 01-16 16 character antenna ID, point B 18-30 X, meters 32-44 Y, meters 46-58 Z, meters 60-72 geodetic latitude, decimal degrees, positive north 74-86 geodetic longitude, decimal degrees, positive east 88-96 ellipsoidal height, meters, positive up Header Record 10 -- point B, L1 phase center position ---------------- 01-07 L1 antenna offset, (L1 ht. - ARP ht.), meters, point B 18-30 X, meters 32-44 Y, meters 46-58 Z, meters 60-72 geodetic latitude, decimal degrees, positive north 74-86 geodetic longitude, decimal degrees, positive east 88-96 ellipsoidal height, meters, positive up Header Record 11 -- point B, L2 phase center position ---------------- 01-07 L2 antenna offset, (L2 ht. - ARP ht.), meters, point b 18-30 X, meters 32-44 Y, meters 46-58 Z, meters 60-72 geodetic latitude, decimal degrees, positive north 74-86 geodetic longitude, decimal degrees, positive east 88-96 ellipsoidal height, meters, positive up Header Record 12 -- point B, L1 phase center variations ---------------- 02-05 L1 phase delay at 90 deg., units of 0.1 mm 07-10 " 85 deg., " 12-15 " 80 deg., " 17-20 " 75 deg., " 22-25 " 70 deg., " 27-30 " 65 deg., " 32-35 " 60 deg., " 37-40 " 55 deg., " 42-45 " 50 deg., " 47-50 " 45 deg., " 52-55 " 40 deg., " 57-60 " 35 deg., " 62-65 " 30 deg., " 67-70 " 25 deg., " 72-75 " 20 deg., " 77-80 " 15 deg., " 82-85 " 10 deg., " 87-90 " 5 deg., " 92-95 " 0 deg., " Header Record 13 -- point B, L2 phase center variations ---------------- 02-05 L2 phase delay at 90 deg., units of 0.1 mm 07-10 " 85 deg., " 12-15 " 80 deg., " 17-20 " 75 deg., " 22-25 " 70 deg., " 27-30 " 65 deg., " 32-35 " 60 deg., " 37-40 " 55 deg., " 42-45 " 50 deg., " 47-50 " 45 deg., " 52-55 " 40 deg., " 57-60 " 35 deg., " 62-65 " 30 deg., " 67-70 " 25 deg., " 72-75 " 20 deg., " 77-80 " 15 deg., " 82-85 " 10 deg., " 87-90 " 5 deg., " 92-95 " 0 deg., " Header Record 14 ---------------- 01-09 data start time, seconds past midnight (see record 1), GPS time 11-19 data stop time, seconds past midnight (see record 1), GPS time 21-25 data interval, seconds Following header, data grouped by epoch sets -- Epoch Header Record -------------------- 01-09 point A time, seconds past midnight (see record 1), GPS time 11-19 point B time, seconds past midnight (see record 1), GPS time 21-22 number of satellites in this set Data Record -- one record for each satellite in epoch (see epoch header) ----------- 001-002 PRN, satellite identifier 004-015 L1 pseudorange, point A, meters 017-028 L1 pseudorange, point B, meters 030-042 L1 carrier phase, point A, units of L1 cycles 044-056 L1 carrier phase, point B, units of L1 cycles 058-069 L2 pseudorange, point A, meters 071-082 L2 pseudorange, point B, meters 084-096 L2 carrier phase, point A, units of L2 cycles 098-110 L2 carrier phase, point B, units of L2 cycles [missing data elements (004 thru 110) filled with null = 99999999.999]