Number of Records |
---|

The number of satellite almanac records contained in the file |

Units: Records Range: 0 to 32 Accuracy: 1 Precision: 2 significant digits Frequency: Once per file Type: Integer |

Title |

A short description of the file |

Units: None Range: Any combination of valid ASCII characters Accuracy: None Precision: 24 significant characters Frequency: Once per file Legality Checks: Valid ASCII characters Type: ASCII string |

GPS Week Number |

The almanac reference week (VINA) for all almanacs in the file per IS-GPS-200H |

Units: Weeks Range: 0 to 1023 Accuracy: 1 Precision: 4 significant digits Frequency: Once per file Legality Checks: Range check Type: Integer |

GPS Time of Applicability |

The almanac reference time (TOA) for all almanacs in the file per IS-GPS-200H |

Units: Seconds Range: 0 to 602112 Accuracy: 1 Precision: 6 significant digits Frequency: Once per file Legality Checks: Range check Type: Long integer |

PRN Number |

The satellite PRN number per ICD-GPS-200H. This is a required data item as it is the GPS user's primary means of identifying GPS satellites. It is equivalent to the space vehicle identification (SVID) number of the satellite. |

Units: None Range: 1 to 32 Accuracy: None Precision: 2 significant digits Frequency: Number of records per file Legality check: Range check Type: Integer |

SVN Number |

The satellite "SVN" reference number. This is not a required data item and is normally included only for cross-reference with the operational control system (OCS). |

Units: None Range: 0 to 255 Accuracy: None Precision: 3 significant digits Frequency: Number of records per file Legality check: Range check Type: Integer |

Average URA Number |

The satellite "average" URA number, with URA number as defined in IS-GPS-200H. This is not an item in the raw almanac file but is based on the average URA value transmitted by this satellite in its subframe 1 data sets. |

Units: None Range: 0 to 15 Accuracy: 1 Precision: 2 significant digits Frequency: Number of records per file Legality check: Range check Type: Integer |

Eccentricity |

The satellite almanac orbital "eccentricity" (e) as defined in IS-GPS-200H. |

Units: Unitless Range: 0.0 to 0.03 Accuracy: 4.7E-7 Precision: 7 significant digits Frequency: Number of records per file Legality check: Range check Type: Real |

Inclination Offset |

The satellite almanac orbital "inclination angle offset"
(i) as defined in IS-GPS-200H. This is an
item in the raw almanac file and does not include the 0.30 semicircle
reference value. This should not be confused with the "i_{0}" term in
the satellite ephemeris files. |

Units: Semicircles Range: -9.999999E-2 to +9.999999E-2 Accuracy: 1.91E-6 Precision: 7 significant digits Frequency: Number of records per file Legality check: Range check Type: Real |

Rate of Right Ascension |

The satellite almanac orbital "rate of right ascension" (OMEGADOT) as defined in IS-GPS-200H. |

Units: Semicircles/second Range: -9.999999E-7 to +9.999999E-7 Accuracy: 3.6E-12 Precision: 7 significant digits Frequency: Number of records per file Legality check: Range check Type: Real |

Square Root of Semi-Major Axis |

The satellite almanac orbital "square root of the semi-major
axis" (A)^{1/2} as defined in IS-GPS-200H. |

Units: Meters^{1/2}Range: 79.0 to 9999.99999 Accuracy: 4.8E-4 Precision: 9 significant digits Frequency: Number of records per file Legality check: Range check Type: Real |

Longitude of Orbital Plane |

The satellite almanac orbital "geographic longitude of the
orbital plane at the weekly epoch" (OMEGA)_{0} as defined in
IS-GPS-200H. |

Units: Semicircles Range: -1.0 to +1.0 Accuracy: 1.1E-7 Precision: 9 significant digits Frequency: Number of records per file Legality check: Range check Type: Real |

Argument of Perigee |

The satellite almanac orbital "argument of perigee" (ω) as defined in IS-GPS-200H. |

Units: Semicircles Range: -1.0 to +1.0 Accuracy: 1.1E-7 Precision: 9 significant digits Frequency: Number of records per file Legality check: Range check Type: Real |

Mean Anomaly |

The satellite almanac orbital "mean anomaly"
(M_{0}) as defined in IS-GPS-200H. |

Units: Semicircles Range: -1.0 to +1.0 Accuracy: 1.1E-7 Precision: 9 significant digits Frequency: Number of records per file Legality check: Range check Type: Real |

Zeroth-Order Clock Correction |

The satellite almanac zeroth-order clock correction term
(a_{f0}) as defined in IS-GPS-200H. |

Units: Seconds Range: -9.9999E-4 to +9.9999E-4 Accuracy: 9.5E-7 Precision: 5 significant digits Frequency: Number of records per file Legality check: Range check Type: Real |

First-Order Clock Correction |

The satellite almanac first-order clock correction term
(a_{f1}) as defined in IS-GPS-200H. |

Units: Seconds/second Range: -9.9999E-9 to +9.9999E-9 Accuracy: 3.6E-12 Precision: 5 significant digits Frequency: Number of records per file Legality check: Range check Type: Real |

Satellite Health |

The satellite subframe 4 and 5, page 25 six-bit health code as defined in IS-GPS-200H expressed in integer form. |

Units: None Range: 0 to 63 Accuracy: None Precision: 2 significant digits Frequency: Number of records per file Legality check: Range check Type: Integer |

Satellite Configuration |

The satellite subframe 4, page 25 four-bit configuration code as defined in IS-GPS-200H expressed in integer form. |

Units: None Range: 0 to 15 Accuracy: None Precision: 2 significant digits Frequency: Number of records per file Legality check: Range check Type: Integer |

GPS SEM Almanacs | ||
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1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 |
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 |
2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 |

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Last updated: 2018 Jun 21 04:18:18 UTC

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