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Name Template: PUB/MISSION/level1b/atmPhs/YYYY.DDD/atmPhs_IIII.YYYY.DDD.HH.MM.GGG_SSSS.VVVV_nc

DDDDay of year
GGGGNSS id (G28 = GPS satellite 28)
HHHour
IIIIMission ID (CHAM, SACC, CO01-06, GPSM, etc)
LLLLEO number (1-6 for COSMIC)
MISSIONMission ID (eight characters or less--champ, champrt, sacc, sacctst, etc)
MMMinute
PUBBase directory for the pub hierarchy
SSSSSubtype (an ID which tells the command options used in generating this file)
VVVVVersion (an ID which tells the version of all codes using in generating thie file)
YYYYYear

Atmospheric excess phase file. This file is analogous to the GPS/MET 'occ' level 2 files, but it is in NetCDF format instead of tab-delimited ASCII. For more information on NetCDF, see . https://www.unidata.ucar.edu/software/netcdf/.

Global Data

startTime

  • Description:Starting time for the occultation
  • Data Type: double
  • Units: GPS seconds

stopTime

  • Description:Ending time for the occultation
  • Data Type: double
  • Units: GPS seconds

fidName

  • Description:IGS four character name of the double difference fiducial site used, if any
  • Data Type: char(4)

fileStamp

  • Description:The complete ID for this occultation (IIII.YYYY.DDD.HH.MM.GGG).
  • Data Type: char

refsatId

  • Description:The PRN number of the reference GPS satellite
  • Data Type: int(4)
  • Valid Range: 1, 36

setting

  • Description:Flag: 1 = A setting occultation, 0 = A rising occultation
  • Data Type: int(4)
  • Valid Range: 0, 1

intref

  • Description:Flag: L2 reference link interpolation (1=yes)
  • Data Type: int(4)
  • Valid Range: 0, 1

fidoccrms

  • Description:RMS of fit to L4 fiducial occsat data
  • Data Type: float
  • Units: m

fidoccmax

  • Description:Max deviation of fit to L4 fiducial occsat data
  • Data Type: float
  • Units: m

fidrefrms

  • Description:RMS of fit to L4 fiducial refsat data
  • Data Type: float
  • Units: m

fidrefmax

  • Description:Max deviation of fit to L4 fiducial refsat data
  • Data Type: float
  • Units: m

refrms

  • Description:RMS of fit to L4 leo refsat data
  • Data Type: float
  • Units: m

refmax

  • Description:Max deviation of fit to L4 leo refsat data
  • Data Type: float
  • Units: m

l2min

  • Description:Minimum L2 SNR of leo refsat data
  • Data Type: float
  • Units: volts/volt

l2max

  • Description:Maximum L2 SNR of leo refsat data
  • Data Type: float
  • Units: volts/volt

Profile Data

pL1Snr

  • Description:Signal to Noise Ratio on the L1 channel, P code
  • Data Type: float
  • Units: 1/10 volts/volt
  • Valid Range: 0, 65535
  • Missing Value: -999

zLeo

  • Description:LEO Z position (ECI)
  • Data Type: double
  • Units: km
  • Valid Range: -7378, 7378
  • Missing Value: -999

zGps

  • Description:GPS Z position (ECI)
  • Data Type: double
  • Units: km
  • Valid Range: -26564, 26564
  • Missing Value: -999

xGps

  • Description:GPS X position (ECI)
  • Data Type: double
  • Units: km
  • Valid Range: -26564, 26564
  • Missing Value: -999

pL2Snr

  • Description:Signal to Noise Ratio on the L2 channel, P code
  • Data Type: float
  • Units: 1/10 volts/volt
  • Valid Range: 0, 65535
  • Missing Value: -999

exLC

  • Description:Excess Phase (ionosphere corrected)
  • Data Type: double
  • Units: m
  • Valid Range: -5000, 5000
  • Missing Value: -999

xmdl

  • Description:Open Loop Phase Model
  • Data Type: double
  • Units: m
  • Valid Range: -5000, 5000
  • Missing Value: -999

xmdldd

  • Description:Open Loop Phase Model minus Computed Phase Model
  • Data Type: double
  • Units: m
  • Valid Range: -5000, 5000
  • Missing Value: -999

xrng

  • Description:Open Loop Range Model minus LEO and GPS clocks
  • Data Type: double
  • Units: m
  • Valid Range: -5000, 5000
  • Missing Value: -999

dphs

  • Description:Open Loop delta Phase
  • Data Type: double
  • Units: m
  • Valid Range: -5000, 5000
  • Missing Value: -999

Time

  • Description:Time since start of occultation
  • Data Type: float
  • Units: s
  • Valid Range: 0, 240
  • Missing Value: -999

exL2

  • Description:Excess Phase on L2 channel
  • Data Type: double
  • Units: m
  • Valid Range: -5000, 5000
  • Missing Value: -999

xdGps

  • Description:GPS X velocity (ECI)
  • Data Type: double
  • Units: km/s
  • Valid Range: -5, 5
  • Missing Value: -999

yLeo

  • Description:LEO Y position (ECI)
  • Data Type: double
  • Units: km
  • Valid Range: -7378, 7378
  • Missing Value: -999

zdLeo

  • Description:LEO Z velocity (ECI)
  • Data Type: double
  • Units: km/s
  • Valid Range: -8, 8
  • Missing Value: -999

exL1

  • Description:Excess Phase on L1 channel
  • Data Type: double
  • Units: m
  • Valid Range: -5000, 5000
  • Missing Value: -999

caL1Snr

  • Description:Signal to Noise Ratio on the L1 channel, CA code
  • Data Type: float
  • Units: 1/10 volts/volt
  • Valid Range: 0, 65535
  • Missing Value: -999

ydLeo

  • Description:LEO Y velocity (ECI)
  • Data Type: double
  • Units: km/s
  • Valid Range: -8, 8
  • Missing Value: -999

xLeo

  • Description:LEO X position (ECI)
  • Data Type: double
  • Units: km
  • Valid Range: -7378, 7378
  • Missing Value: -999

xdLeo

  • Description:LEO X velocity (ECI)
  • Data Type: double
  • Units: km/s
  • Valid Range: -8, 8
  • Missing Value: -999

zdGps

  • Description:GPS Z velocity (ECI)
  • Data Type: double
  • Units: km/s
  • Valid Range: -5, 5
  • Missing Value: -999

ydGps

  • Description:GPS Y velocity (ECI)
  • Data Type: double
  • Units: km/s
  • Valid Range: -5, 5
  • Missing Value: -999

yGps

  • Description:GPS Y position (ECI)
  • Data Type: double
  • Units: km
  • Valid Range: -26564, 26564
  • Missing Value: -999

xmdl2

  • Description:L2CA OpenLoop Phase Model
  • Data Type: double
  • Units: m
  • Valid Range: -5000, 5000
  • Missing Value: -999

xmdldd2

  • Description:L2CA OpenLoop Phase Model (DD)
  • Data Type: double
  • Units: m
  • Valid Range: -5000, 5000
  • Missing Value: -999

xrng2

  • Description:L2CA OpenLoop Range Model
  • Units: m
  • Valid Range: -5000, 5000
  • Missing Value: -999






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