Garmin GPSMAP 17 Teknik Özellikler - Sayfa 36

Deniz GPS Sistemi Garmin GPSMAP 17 için çevrimiçi göz atın veya pdf Teknik Özellikler indirin. Garmin GPSMAP 17 40 sayfaları. Gps receiver/antenna
Ayrıca Garmin GPSMAP 17 için: Kurulum Talimatları Kılavuzu (16 sayfalar), Kurulum Talimatları Kılavuzu (12 sayfalar), Kurulum Kılavuzu (16 sayfalar), Referans Kılavuzu (1 sayfalar), Teknik Referans (30 sayfalar), Kurulum Talimatları Kılavuzu (17 sayfalar), Kurulum Talimatları Kılavuzu (19 sayfalar), Uygunluk Beyanı (1 sayfalar), Hızlı Başlangıç Kılavuzu (16 sayfalar)

Garmin GPSMAP 17 Teknik Özellikler
An example function to do the parsing is shown below. Note that the double data types are converted by the
function cnvt_ieee_double(). This function merely swaps the upper and lower words of the double.
This is necessary on GPS 15, 16, 17 series sensors due to a compatibility issue with the IEEE floating point
standard): In this example, the array m_TempArray contains the data portion of the ephemeris packet
(with DLE stuffing removed).
/****************************************************************************
*
*
PROCEDURE NAME:
*
copyData - ephemeris data unpacker
*
*
DESCRIPTION:
*
unpacks data from ephemeris packet DATA field after extraneous DLEs
*
have been removed.
*
integer type.
*
****************************************************************************/
void GPM_ephList::copyData
(
GPM_ephData* pTemp
)
{
pTemp->EphStruct.wn
pTemp->EphStruct.toc = *(float*)&m_TempArray[IDX_EPH_TOC];
pTemp->EphStruct.toe = *(float*)&m_TempArray[IDX_EPH_TOE];
pTemp->EphStruct.af0 = *(float*)&m_TempArray[IDX_EPH_AF0];
pTemp->EphStruct.af1 = *(float*)&m_TempArray[IDX_EPH_AF1];
pTemp->EphStruct.af2 = *(float*)&m_TempArray[IDX_EPH_AF2];
pTemp->EphStruct.ura = *(float*)&m_TempArray[IDX_EPH_URA];
cnvt_ieee_double((long *)&m_TempArray[IDX_EPH_E]);
pTemp->EphStruct.e = *(double*)&m_TempArray[IDX_EPH_E];
cnvt_ieee_double((long *)&m_TempArray[IDX_EPH_SQRTA]);
pTemp->EphStruct.sqrta = *(double*)&m_TempArray[IDX_EPH_SQRTA];
cnvt_ieee_double((long *)&m_TempArray[IDX_EPH_DN]);
pTemp->EphStruct.dn = *(double*)&m_TempArray[IDX_EPH_DN];
cnvt_ieee_double((long *)&m_TempArray[IDX_EPH_M0]);
pTemp->EphStruct.m0 = *(double*)&m_TempArray[IDX_EPH_M0];
cnvt_ieee_double((long *)&m_TempArray[IDX_EPH_W]);
pTemp->EphStruct.w = *(double*)&m_TempArray[IDX_EPH_W];
cnvt_ieee_double((long *)&m_TempArray[IDX_EPH_OMG0]);
pTemp->EphStruct.omg0 = *(double*)&m_TempArray[IDX_EPH_OMG0];
cnvt_ieee_double((long *)&m_TempArray[IDX_EPH_I0]);
pTemp->EphStruct.i0 = *(double*)&m_TempArray[IDX_EPH_I0];
pTemp->EphStruct.odot = *(float*)&m_TempArray[IDX_EPH_ODOT];
pTemp->EphStruct.idot = *(float*)&m_TempArray[IDX_EPH_IDOT];
pTemp->EphStruct.cus = *(float*)&m_TempArray[IDX_EPH_CUS];
pTemp->EphStruct.cuc = *(float*)&m_TempArray[IDX_EPH_CUC];
pTemp->EphStruct.cis = *(float*)&m_TempArray[IDX_EPH_CIS];
pTemp->EphStruct.cic = *(float*)&m_TempArray[IDX_EPH_CIC];
pTemp->EphStruct.crs = *(float*)&m_TempArray[IDX_EPH_CRS];
pTemp->EphStruct.crc = *(float*)&m_TempArray[IDX_EPH_CRC];
pTemp->EphStruct.iod = *(unsigned char*)&m_TempArray[IDX_EPH_IOD];
return;
}
/* copyData */
190-00228-20
Note that sint16 refers to a signed 16-bit
/* ephemeris data unpacker
/* pointer to ephemeris data array
= *(sint16*)&m_TempArray[IDX_EPH_WN];
GPS 16/17 Technical Specifications
Page 32
*/
*/
Rev. C