Second GPS Block IIF satellite launched successfully from Cape Canaveral at 2:41 a.m. EDT on July 16

> The second GPS Block IIF satellite launched successfully from Cape
> Canaveral at 2:41 a.m. EDT on July 16 and has reached transfer orbit.
> After two postponements, this was the first GPS launch since the May 27,
> 2010, flight of GPS IIF-1.

> Page, July 2011.
> Satellite Freq.
> PRN/SVN Plane Std # Block Comments
>

> 01/63 D2 ??? IIF-2 Launched: 16 July 2011...
> ---
> 02/61 D1 Rb1 IIR Clock swap, 27 April 2008, from Rb3 to

> 03/33 C2 Cs4 IIA
> 04/34 D4 Rb1 IIA
> 05/50 E3 Rb1 IIR-21/M8 Launched: 17 August 2009...set healthy 27

> 06/36 C5 Rb1 IIA
> 07/48 A4 Rb3 IIR-19/M6
> 08/38 A3 Rb1 IIA Clock swap, 15 October 2009, from Cs3 to

> 09/39 A1 Cs4         IIA
> 10/40 E3 Cs3 IIA Will be moving eastward from E3 slot to

> --- for PRN/SVN 05/50...
> 11/46 D2(F) Rb1 IIR
> 12/58 B4 Rb3 IIR-16/M3
> 13/43 F3 Rb1 IIR
> 14/41 F1 Rb1 IIR
> 15/55 F2 Rb3 IIR-17/M4
> 16/56 B1 Rb3 IIR
> 17/53 C4 Rb3 IIR-14/M1
> 18/54 E4 Rb1 IIR
> 19/59 C3 Rb3 IIR
> 20/51 E1 Rb1 IIR
> 21/45 D3 Rb3 IIR
> 22/47 E2 Rb3 IIR
> 23/60 F4 Rb2 IIR
> 24/24^ D5 Cs4 IIA Placed in AMMM (Mode 5) on 4 January 2005...
> 25/62 B2 Rb1 IIF-1 Launched 28 May 2010...Clock swap, 12 July

> 26/26 F5 Rb1 IIA
> 27/27 A6 Cs4 IIA
> 28/44 B3 Rb2 IIR
> 29/57 C1 Rb3 IIR-18/M5
> 30/30 B5 Cs3 IIA
> 31/52 A2 Rb3 IIR-15/M2
> 32/23 E5 Rb2 IIA Old PRN23/SVN23...Reinstatement on 27 June

> Satellite Freq.
> PRN/SVN Plane Std # Block
>

> 01/63 D2 ??? IIF-2 Scheduled launch: 14 July 2011...
>

> 01/35 B5 RB1 IIA >>>No more L-Band as of 12 July 2011<<<

> --- ---should be re-decommissioned---

> 01/49 B6 Rb2 IIR-20/M7 >>>Decommissioned on 06 May 2011<<<
> 25/35 B5 Rb1 IIA >>>Decommissioned on 01 March 2010<<<
> 25/25 A5 Rb1 IIA >>>Decommissioned on 18 December 2009<<<
> 05/35 B5 Rb1 IIA >>>Decommissioned on 26 March 2009<<<

> 12/42 -- --- IIR Destroyed during Launch (1997)
> 20/50 -- --- IIR Moisture Seepage at Pre-Launch (1999): Got

> * 3 Wheel Vehicles/Autonomous Momentum Dumps at 0.2 or 0.8 sec.
> ** Pitch, Roll, P&R at 0.4, 1.6, and 1.6+ sec (manual momentum dumps)
> ^ AMMM - Autonomous Magnetic Momentum Management (Mode 5)
> + Experiences glint firings prior to and after eclipse season...glint

> due to sunlight entering/disorienting sensors causing small thrusts

> DNL - Did Not Launch
> GLAN - Geographic Longitude of the Ascending Node
> UFN - Until Further Notice
> NET - No Earlier Than
> TBD - To Be Determined
>

> For civilian information, contact the United States Coast Guard (NAVCEN) at
> (703)313-5900, 24 hours daily, or go to their web-site at:
> http://www.navcen.uscg.gov
> For military information, contact the GPS Support Center, 2SOPS, Schriever

> NATIONAL GEOSPATIAL-INTELLIGENCE AGENCY
> GPS PRECISE EPHEMERIDES, SATELLITE CLOCK PARAMETERS
> AND SMOOTHED OBSERVATIONS
> PRECISE EPHEMERIS
> Earth-centered Earth-fixed trajectory
> Coordinate system: WGS84 (G1150)
> Position -- x,y,z (km)
> Velocity -- dx/dt,dy/dt,dz/dt (dm/s)
> GPS time -- year, day, hour, minute
> Trajectory interval: 15 min.
> Standard Trajectory referenced to satellite center of mass
> Optional Trajectory referenced to satellite antenna phase center
> SATELLITE CLOCK PARAMETERS
> Clock parameters for each satellite:
> Time offset (microseconds)
> Frequency offset (10E-4 microsec/s = parts in 10E10)
> Time interval for parameters: 15 min.
> Satellite clock events: All events processed as reinitializations
> SMOOTHED OBSERVATIONS
> Smoothed range and range difference observations (km) with corrections
> applied (see below)
> GPS time of observation (year, day, seconds from beginning of day)
> Standard deviation of observation (km)
> Coordinate system: WGS84 (G1150)
> Station coordinates: Position -- x,y,z (m), Epoch 2001.0
> Velocity -- dx/dt,dy/dt,dz/dt (m/year)
> Temperature (degrees Celsius)
> Pressure (millibars)
> Humidity (percent)
> Data interval: 15 min.
> Smoothing uses carrier phase to smooth range and range difference
> measurements collected at a 1.5 second rate for NGA and Air Force
> monitor stations and at a 30 second rate for IGS monitor stations
> Minimum elevation angle for observation: 10 degrees
> National Geospatial-Intelligence Agency and Air Force monitor station data
> collected and smoothed using similar procedures
> References: Computer Program Development Spec., Master Control
> Station, Ephemeris/Clock Computer Program, NAVSTAR GPS Operational
> Control System Segment, CP-MCSEC-302C, Part 1, Appendix A, 7 May 1993.
> Description of the Smoothing Algorithm in the NGA Monitor Station
> Network, (MSN29), Applied Research Laboratories, The University of
> Texas at Austin, GR-SGG-97-1, 3 April 1997.
> PHYSICAL CONSTANTS
> GM(Earth) = 398600.4418 km**3/s**2
> GM(Sun) = 132712400000 km**3/s**2
> GM(Moon) = 4902.799186 km**3/s**2
> Moon radius = 1738 km
> Sun radius = 696000 km
> Earth semi-major axis (a) = 6378.137 km
> Inverse flattening (1/f) = 298.257223563
> Earth angular velocity = 0.72921158553 X 10**-4 Rad/s
> Speed of light = 299792.458 km/s
> Love's constant = 0.290
> Solar constant = 4.560 X 10**-6 N/m**2
> Astronomical Unit = 149597870.691 km
> STATION COORDINATES (CARTESIAN)
> WGS84 (G1150) Epoch 2001.0
> COORDINATES ARE IN METERS
> VELOCITIES ARE IN METERS/YEAR
> ID X (m) Y (m) Z (m)
> 85128) AMC1 -1248599.616 -4819441.045 3976490.143
> -.0179 .0010 -.0037
> 85129) ASCN 6118523.959 -1572350.788 -876463.966
> -.0025 -.0048 .0102
> 85130) DGAR 1916197.038 6029998.760 -801737.324
> -.0422 .0203 .0307
> 85131) KWGL -6160884.189 1339851.890 960843.048
> .0207 .0673 .0270
> 85132) HAWI -5511980.267 -2200247.059 2329480.888
> -.0095 .0630 .0298
> 85143) CAPE 918988.120 -5534552.966 3023721.377
> -.0102 -.0015 .0015
> --------------------------------------------------
> 85402) AUSA -3939182.131 3467075.376 -3613220.824
> -.0408 .0036 .0473
> 85403) ARGA 2745499.065 -4483636.591 -3599054.582
> .0021 -.0100 .0070
> 85404) ENGD 3981776.643 -89239.097 4965284.672
> -.0138 .0165 .0077
> 85405) BAH1 3633910.240 4425277.144 2799862.420
> -.0297 .0091 .0253
> 85406) ECUA 1272867.329 -6252772.124 -23801.818
> .0030 .0004 .0099
> 85407) USNO 1112158.931 -4842855.601 3985497.054
> -.0148 -.0001 .0010
> 85410) ALAS -2296298.464 -1484805.073 5743080.055
> -.0222 -.0036 -.0092
> 85411) NZLD -4780787.718 436877.170 -4185259.709
> -.0235 .0192 .0220
> 85412) SAFR 5066232.114 2719226.950 -2754392.726
> .0001 .0209 .0140
> 85413) SKOR -3067863.123 4067641.035 3824295.830
> -.0290 -.0076 -.0102
> 85414) TAHI -5246403.866 -3077285.554 -1913839.459
> -.0425 .0468 .0291
> STATION COORDINATES (GEODETIC)
> WGS84 (G1150) Epoch 2001.0
> ID LAT (deg N) LONG (deg E) ELLIPSOID HT (m)
> 85128) 38.80293823 255.47540511 1911.811
> 85129) -7.95132970 345.58786971 106.382
> 85130) -7.26984340 72.37092199 -64.333
> 85131) 8.72250080 167.73052657 39.733
> 85132) 21.56149103 201.76066969 425.854
> 85143) 28.48373800 279.42769549 -24.005
> --------------------------------------------------
> 85402) -34.72900041 138.64734499 38.155
> 85403) -34.57370168 301.48070059 48.747
> 85404) 51.45374296 358.71610885 163.115
> 85405) 26.20914027 50.60814480 -14.738
> 85406) -.21515762 281.50639203 2922.537
> 85407) 38.92056494 282.93368495 59.066
> 85410) 64.68793999 212.88703402 176.545
> 85411) -41.27264988 174.77870783 47.892
> 85412) -25.74634613 28.22403728 1416.378
> 85413) 37.07756804 127.02403172 51.792
> 85414) -17.57703053 210.39381438 99.927
> CORRECTIONS APPLIED TO MEASUREMENTS
> Ionospheric delay: 2-frequency, 1st order correction
> Tropospheric refraction: Saastamoinen hydrostatic and wet zenith delay
> models and Niell hydrostatic and wet mapping functions
> Periodic relativistic effects
> Satellite antenna offset (satellite body centered coordinates, meters)
> Block II PRN's - Delta x= 0.2794, Delta y= 0.0000, Delta z= 0.9519
> ---
> Block IIA PRN's - Delta x= 0.2794, Delta y= 0.0000, Delta z= 0.9519
> ---
> Block IIR PRN 02 - Delta x= -0.0099, Delta y= 0.0061, Delta z= -0.0820
> Block IIR PRN 11 - Delta x= 0.0019, Delta y= 0.0011, Delta z= 1.5141
> Block IIR PRN 13 - Delta x= 0.0024, Delta y= 0.0025, Delta z= 1.6140
> Block IIR PRN 14 - Delta x= 0.0018, Delta y= 0.0002, Delta z= 1.6137
> Block IIR PRN 16 - Delta x= -0.0098, Delta y= 0.0060, Delta z= 1.6630
> Block IIR PRN 18 - Delta x= -0.0098, Delta y= 0.0060, Delta z= 1.5923
> Block IIR PRN 19 - Delta x= -0.0079, Delta y= 0.0046, Delta z= -0.0180
> Block IIR PRN 20 - Delta x= 0.0022, Delta y= 0.0014, Delta z= 1.6140
> Block IIR PRN 21 - Delta x= 0.0023, Delta y= -0.0006, Delta z= 1.5840
> Block IIR PRN 22 - Delta x= 0.0018, Delta y= -0.0009, Delta z= 0.0598
> Block IIR PRN 23 - Delta x= -0.0088, Delta y= 0.0035, Delta z= 0.0004
> Block IIR PRN 28 - Delta x= 0.0019, Delta y= 0.0007, Delta z= 1.5131
> ---
> Block IIR-M PRN 01 - Delta x= 0.01245, Delta y= -0.00038, Delta z= -0.02283
> Block IIR-M PRN 05 - Delta x= 0.00292, Delta y= -0.00005, Delta z= -0.01671
> Block IIR-M PRN 07 - Delta x= 0.00127, Delta y= 0.00025, Delta z= 0.00056
> Block IIR-M PRN 12 - Delta x= -0.01016, Delta y= 0.00587, Delta z= -0.09355
> Block IIR-M PRN 15 - Delta x= -0.00996, Delta y= 0.00579, Delta z= -0.01227
> Block IIR-M PRN 17 - Delta x= -0.00996, Delta y= 0.00599, Delta z= -0.10060
> Block IIR-M PRN 29 - Delta x= -0.01012, Delta y= 0.00591, Delta z= -0.01512
> Block IIR-M PRN 31 - Delta x= 0.00160, Delta y= 0.00033, Delta z= -0.05750
> ---
> Block IIF PRN 25 - Delta x= 0.39200, Delta y= 0.00200, Delta z= 1.09300
> Block IIF PRN 01 - Delta x= 0.39100, Delta y= 0.00000, Delta z= 1.09100
> ---
> Station displacement due to tides
> Yaw Bias: JPL yaw bias model for Block II and IIA satellites in eclipse
> FORCE MODELING
> Gravitational:
> EGM96 Earth gravity model truncated at degree 12 and order 12
> Solar and Lunar gravity using the DE403 ephemeredes, J2000 epoch,
> and IAU Resolutions on Astronomical Constants, Time Scales, and
> the Fundamental Reference Frame (1976-1980)
> Solid Earth tides
> Non-gravitational:
> Radiation Pressure
> The JPL TJPLXYZ03 - II/IIA version model for Block II and IIA satellites
> The JPL TJPLXYZ03 - IIR version model for Block IIR satellites
> The ?????? - IIF version model for Block IIF satellites
> Thrusts
> Momentum dumps
> Kinematic:
> Luni-solar and planetary precession (IAU Resolutions, as above)
> Nutation (IAU Resolutions, as above)
> Earth rotation (IAU Resolutions, as above)
> Polar Motion (using NGA initial values generated the week before
> the orbit fit) + diurnal and semi-diurnal effects
> UT1-UTC (using NGA initial values generated the week before the
> orbit fit) + Zonal tide effects + diurnal and semi-diurnal effects
> Integration step size: 300 seconds, reduced to 10 seconds during
> eclipse boundary crossings
> ORBIT ESTIMATION METHOD
> Kalman Filter/RTS Smoother (Square Root Information implementation)
> Initial conditions: From previous fit
> Solution parameters:
>         Satellite state vector in element form at trajectory epoch --
>          semi-major axis
>          eccentricity * sin(argument of perigee)
>          eccentricity * cos(argument of perigee)
>          inclination
>          mean anomaly + argument of perigee
>          right ascension of the ascending node
>         Satellite clock parameters -- Time offset, Frequency offset
>         Monitor station clock parameters (excluding master station) --
> Time offset, Frequency offset
>         Polar motion parameters -- Pole and pole rate components along
> Greenwich meridian, Pole and pole rate components along
> meridian 90 deg west of Greenwich, Rate of change and
> acceleration of UT1-UTC
>         Satellite radiation pressure parameters -- Radiation pressure
> scale, and Y-axis acceleration
> Tropospheric refraction -- One stochastic zenith delay
> parameter per station
> Minimum range observation uncertainty(1-sigma):100 cm (IGS Stations)
> 80 cm (AF Station 85130)
> 40 cm (Other AF and NGA

> Minimum range difference observation uncertainty (1-sigma): 1.5 cm
> Process noise in Kalman Filter:
> Radiation pressure (each satellite)--
>          Decorrelation time 14,400 s
>          Steady state sigmas --
>          SCALE 0.05
>          Y-AXIS 0.5 X 10**-12 km/s**2
>         Tropospheric refraction variance rate: 2.89 cm**2/hr
>         Station clock white noise spectral density: (each station) --
>          Time offset 0.1111 X 10**-2 (microseconds)**2/s
>          Frequency offset 0.1111 X 10**-8 (ppm)**2/s
>         Satellite clock white noise spectral density: (each satellite)
> Time offset 0.1111 X 10**-2 (microseconds)**2/s
>          Frequency offset 0.1111 X 10**-8 (ppm)**2/s
>          Frequency drift 0. (ppm/s)**2/s
> SATELLITE CLOCK ESTIMATION METHOD
> Kalman Filter/RTS Smoother (Square Root Information implementation)
> Orbit solutions from above method are held fixed for satellite clock
> estimation
> Solution parameters:
> Satellite clock parameters -- Time offset, Frequency offset                
> Monitor station clock parameters (excluding master station) --
> Time offset, Frequency offset
> Tropospheric refraction -- One stochastic zenith delay parameter
> per station.
> Minimum range observation uncertainty(1-sigma):100 cm (IGS Stations)
> 80 cm (AF Station 85130)
> 40 cm (Other AF and NGA

> Minimum range difference observation uncertainty (1-sigma): 15.0 cm
> Process noise in Kalman Filter:
> Tropospheric refraction variance rate: 2.89 cm**2/hr
> Station clock white noise spectral densities:
> NGA stations (except USNO) and Air Force stations (except Colorado

> Time offset 0.1944 X 10**-8 (microseconds)**2/s
> Frequency offset 0.4440 X 10**-19 (ppm)**2/s
> NGA station at USNO and Air Force station at Colorado Springs:
> Time offset 0.1380 X 10**-9 (microseconds)**2/s
> Frequency offset 0.4440 X 10**-19 (ppm)**2/s
>         IGS stations:
> Time offset 0.3456 X 10**-8 (microseconds)**2/s
> Frequency offset 0.4440 X 10**-19 (ppm)**2/s
> Satellite clock white noise spectral densities:
> Satellite Block IIR/IIF Rubidium clocks
> Time offset 0.8640 X 10**-9 (microseconds)**2/s
> Frequency offset 0.1110 X 10**-18 (ppm)**2/s
>          Frequency drift 0. (ppm/s)**2/s
> Satellite Block II/IIA Rubidium clocks
> Time offset 0.1944 X 10**-8 (microseconds)**2/s
> Frequency offset 0.1110 X 10**-18 (ppm)**2/s
> Frequency drift 0. (ppm/s)**2/s
> Satellite Cesium clocks
> Time offset 0.13824 X 10**-7 (microseconds)**2/s
> Frequency offset 0.1000 X 10**-17 (ppm)**2/s
>          Frequency drift 0. (ppm/s)**2/s
>         Satellite 'Noisy' Cesium clocks
> Time offset 0.2000 X 10**-7 (microseconds)**2/s
>          Frequency offset 0.1110 X 10**-16 (ppm)**2/s
> Frequency drift 0. (ppm/s)**2/s
> Reference: Swift, E., Mathematical Description of the GPS Multi-Satellite
> Filter/Smoother, NSWCDD Report (Oct. 2001).