GNSS_FIXDATA_ACCURACY - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers

// gnssdriver.h

typedef struct {
  ULONG Size;
  ULONG Version;
  ULONG HorizontalAccuracy;
  ULONG HorizontalErrorMajorAxis;
  ULONG HorizontalErrorMinorAxis;
  ULONG HorizontalErrorAngle;
  ULONG HeadingAccuracy;
  ULONG AltitudeAccuracy;
  ULONG SpeedAccuracy;
  ULONG HorizontalConfidence;
  ULONG HeadingConfidence;
  ULONG AltitudeConfidence;
  ULONG SpeedConfidence;
  float PositionDilutionOfPrecision;
  float HorizontalDilutionOfPrecision;
  float VerticalDilutionOfPrecision;
} GNSS_FIXDATA_ACCURACY, *PGNSS_FIXDATA_ACCURACY;
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (ns-gnssdriver-gnss_fixdata_accuracy)

GNSS_FIXDATA_ACCURACY structure

Description

The GNSS_FIXDATA_ACCURACY structure defines the accuracy details of a fix.

Members

`Size`

Structure size.

`Version`

Version number.

`HorizontalAccuracy`

Accuracy reported with 95% confidence.

`HorizontalErrorMajorAxis`

Horizontal uncertainty ellipse semi-major axis with 95% confidence accuracy.

`HorizontalErrorMinorAxis`

Horizontal uncertainty ellipse semi-minor axis with 95% confidence accuracy.

`HorizontalErrorAngle`

Horizontal uncertainty ellipse orientation angle with 95% confidence accuracy.

`HeadingAccuracy`

Reserved, do not use.

`AltitudeAccuracy`

Reserved, do not use.

`SpeedAccuracy`

Reserved, do not use.

`HorizontalConfidence`

Reserved, do not use.

`HeadingConfidence`

Reserved, do not use.

`AltitudeConfidence`

Reserved, do not use.

`SpeedConfidence`

Reserved, do not use.

`PositionDilutionOfPrecision`

Position dilution of precision (PDOP).

Satellite-based positions with a dilution of precision (DOP) value of 0 or a DOP value higher than 10 may be filtered by the GNSS adapter.

`HorizontalDilutionOfPrecision`

Horizontal dilution of precision (HDOP).

`VerticalDilutionOfPrecision`

Vertical dilution of precision (VDOP).

View the official Windows Driver Kit DDI reference

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