SIRF_GPSSATELLITE

Extended SiRF Satellite information

Remarks

Extends the standard satellite infomation in GPSSATELLITE with information about the SiRF tracking status for a channel. The following addtional fields are defined:

Field	Description
fAcqSuccess	Successfully acquired
fDeltaCarrierPhaseValid	Delta carrier phase valid
fBitSyncDone	Bit sync done
fSubFrameSyncDone	Frame sync done
fCarrierPullinDone	Carrier pull-in done
fCodeLocked	Code locked
fAcquiredFailed	Failed to acquire

When all flags except fAcquiredFailed are set, the channel is completely locked.

See Also

GPSSATELLITE, SIRF_GPSSATELLITES_EX

Members

Members	Description
unsigned short usID;	ID
unsigned short usSNR;	SNR
double dAzimuth;	Azimuth
double dElevation;	Elevation
GPSBOOL fVisible : 1;	Visible
GPSBOOL fUsed : 1;	Used
GPSBOOL fEphemerisAvailable : 1;	Ephemeris Available
GPSBOOL fValid : 1;	Valid
long Pad : 20;	Reserved
unsigned char ucSyncFlags;	Sync Flags
GPSBOOL fAcqSuccess : 1;	Set if acq/reacq is done success
GPSBOOL fDeltaCarrierPhaseValid : 1;	Intergrated carrier phase valid
GPSBOOL fBitSyncDone : 1;	Bit sync completed flag
GPSBOOL fSubFrameSyncDone : 1;	Subframe sync has been done
GPSBOOL fCarrierPullinDone : 1;	Carrier pull in done
GPSBOOL fCodeLocked : 1;	Code locked
GPSBOOL fAcquiredFailed : 1;	Failed to acquire S/V
short Pad2 : 9;	Reserved
unsigned short usState;	Tracking state

Group

Types

Declaration

typedef struct {
  unsigned short usID;
  unsigned short usSNR;
  double dAzimuth;
  double dElevation;
  GPSBOOL fVisible : 1;
  GPSBOOL fUsed : 1;
  GPSBOOL fEphemerisAvailable : 1;
  GPSBOOL fValid : 1;
  long Pad : 20;
  unsigned char ucSyncFlags;
  GPSBOOL fAcqSuccess : 1;
  GPSBOOL fDeltaCarrierPhaseValid : 1;
  GPSBOOL fBitSyncDone : 1;
  GPSBOOL fSubFrameSyncDone : 1;
  GPSBOOL fCarrierPullinDone : 1;
  GPSBOOL fCodeLocked : 1;
  GPSBOOL fAcquiredFailed : 1;
  short Pad2 : 9;
  unsigned short usState;
} SIRF_GPSSATELLITE_EX, * PSIRF_GPSSATELLITE_EX;

File

sirfapi.h

Links

Types, See Also