GNSS_FIXDATA_ACCURACY structure (gnssdriver.h)

The GNSS_FIXDATA_ACCURACY structure defines the accuracy details of a fix.

Syntax

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;

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).

Requirements