NavCom Sapphire Rev.J - Manual (Page 358)

Sapphire Technical Reference Manual Rev. J
358
Data Item (38 – 74 Bytes) Data Type
SBAS WL fixed ambiguities in KF (optional, depends on the
constellation set)
U32
Baseline North component (LSB = 2^-11 meters) S32
Baseline East component (LSB = 2^-11 meters) S32
Baseline Up component (LSB = 2^-11 meters) S32
RTK correction or raw data age from base (LSB = 0.01 second) U16
2.97.1 Bit mask of GNSS satellite constellation usage
The constellation bit mask describes ambiguity data present for each type of satellite in
the bit mask. This bit mask denotes the data that follows it in the message, with bit 0
denoting GPS, bit 1 denoting GLONASS, and bit 2 denoting SBAS. For example, for
GPS only, bit 0 would be set, creating a data value of 0x01; for SBAS only, bit 2 would
be set, creating a data value of 0x04.
This can be no data at all, or up to 36 additional bytes. The data follows the
constellation, one set of three four-byte fields per bit, arranged to follow the constellation
mask as shown in the following table.
Constellation Mask Bits 1
st
3 2
nd
3 3
rd
3
0x00 (None) None None None
0x01 (GPS) GPS None None
0x02 (GLONASS) GLONASS None None
0x03 (GPS, GLONASS) GPS GLONASS None
0x04 (SBAS) SBAS None None
0x05 (GPS, SBAS) GPS SBAS None
0x06 (GLONASS, SBAS) GLONASS SBAS None
2.97.2 RTK Search Flag
Table 187: RTK Search Flag Enum
Code Description
0 FIX_NOT_READY
1 FIX_TOO_FEW_SATS
2 FIX_BAD_RMS
3 FIX_BAD_PDOP
4 TOO_FEW_SATS_SEARCH
5 NOTHING_TO_FIX
6 WAITING_FOR_CONSISTENT_WINNER
7 FIX_SUCCESS
8 STATUS_SINGULAR_MATRIX