PredictionSupportRecord Class |
This class provides a record of data read from the Prediction Support file (PSF). This data is used to support
statistical predictions of navigation accuracy.
Inheritance HierarchyNamespace: AGI.Foundation.Navigation.DataReaders
Assembly: AGI.Foundation.Navigation (in AGI.Foundation.Navigation.dll) Version: 25.1.421.0 (25.1.421.0)
SyntaxThe PredictionSupportRecord type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | PredictionSupportRecord() | Initializes a new instance. |
| PredictionSupportRecord(PredictionSupportRecord) | Initializes a new instance as a copy of an existing instance. |
| PredictionSupportRecord(Int32, Double, Double, Double, Double, Double) |
Initializes a new instance with RMS values and pseudo random number, setting all other values to 0.
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| PredictionSupportRecord(Int32, Double, Double, Double, Double, Double, Double, Double, Double, Double, Double, Double, Double, Double, Double, Double, Double, Double, Double) |
Initializes the complete prediction support record.
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Properties| Name | Description | |
|---|---|---|
 | AgeOfData |
Gets or sets the age of the navigation data relative to the GPS master control station (MCS) upload generation epoch (minutes).
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| AlongTrackErrorA |
Gets or sets the curve fit 2nd order term for the along track error growth (meters/sec^2).
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| AlongTrackErrorB |
Gets or sets the curve fit 1st order term for the along track error growth (meters/sec).
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| AlongTrackErrorC |
Gets or sets the curve fit 0th order term for the along track error growth (meters).
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| ClockErrorA |
Gets or sets the curve fit 2nd order term for the clock error growth (meters/sec^2).
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| ClockErrorB |
Gets or sets the curve fit 1st order term for the clock error growth (meters/sec).
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| ClockErrorC |
Gets or sets the curve fit 0th order term for the clock error growth (meters).
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| CrossTrackErrorA |
Gets or sets the curve fit 2nd order term for the cross track error growth (meters/sec^2).
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| CrossTrackErrorB |
Gets or sets the curve fit 1st order term for the cross track error growth (meters/sec).
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| CrossTrackErrorC |
Gets or sets the curve fit 0th order term for the cross track error growth (meters).
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| PseudoRandomNumber |
Gets or sets the pseudo random number of the satellite, otherwise known as the PRN or SVID.
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| RadialErrorA |
Gets or sets the curve fit 2nd order term for the radial error growth (meters/sec^2).
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| RadialErrorB |
Gets or sets the curve fit 1st order term for the radial error growth (meters/sec).
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| RadialErrorC |
Gets or sets the curve fit 0th order term for the radial error growth (meters).
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| RmsAlongTrackError |
Gets or sets the Root Mean Square along track error statistic (meters).
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| RmsClockError |
Gets or sets the Root Mean Square clock error statistic (meters).
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| RmsCrossTrackError |
Gets or sets the Root Mean Square cross track error statistic (meters).
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| RmsRadialError |
Gets or sets the Root Mean Square radial error statistic (meters).
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| RmsUserRangeError |
Gets or sets the Root Mean Square user range error statistic (meters).
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Methods| Name | Description | |
|---|---|---|
| Equals(Object) |
Indicates whether another object is exactly equal to this instance.
(Overrides Object.Equals(Object).) |
| Equals(PredictionSupportRecord) |
Indicates whether another instance of this type is exactly equal to this instance.
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 | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
| GetHashCode |
Returns a hash code for this instance, which is suitable for use in hashing algorithms and data structures like a hash table.
(Overrides Object.GetHashCode().) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
RemarksThe following descriptions are from the Air Force Navigation Interface Data Description (IDD):
- Orbit error statistics in the PSF are in Radial - Along Track - Cross Track (RAC) coordinates relative to the satellite's orbit. Each value nominally represents the root-mean-square (RMS) of the last seven days' worth of PAF data for that variable. If there is a gap in the data that is 3 days or greater, the RMS will not include data prior to the gap. If less than one day of data is present for a satellite, then an average of all the other satellite's values for that variable is used. No data is to be included in the RMS for any time when the satellite is unhealthy.
- RMS Clock is satellite clock phase error converted to meters and is also nominally computed as an RMS of the last seven days of clock phase error data PerformanceAssessmentRecord The same shortened time interval logic is used for RMS Clock as for RMS RAC errors. No data is used for any time when the satellite is unhealthy.
- RMS User Range Error is a composite term of the RMS Radial, RMS Along Track, RMS Cross Track, and RMS Clock terms computed each time increment and then averaged over the appropriate time interval (nominally seven days) for a satellite.
- A, B and C Radial, Along Track, Cross Track, Clock and Age Of Data terms are set to 0 in version 1 PSF files.
See Also