NavCom Sapphire Rev.J - Manual (Page 266)

Sapphire Technical Reference Manual Rev. J
266
2.15.3 StarFire Satellite ID
The StarFire satellite IDs range from 320 to 680.
2.15.4 Start Type and Number of Satellites Visible
The start type resides in the two MSB (7:6) and represents one of the conditions
described in Table 111.
Table 111: Start Type
Number Data Item
0 Cold Start
1 Warm Start
2 Hot Start
3 Reserved
The number of visible satellites uses the six LSB(5:0) and represents the current count
of visible satellites (GPS, GLONASS, and WAAS).
2.15.5 Position Status and Number of Satellites Tracked
The position status occupies the two MSB, as described in Table 112, and the number of
satellites tracked occupies the six LSB.
Table 112: Position Status
Number Data Item
0 Position is invalid
1 Position is old
2 Position from normal navigation
3 Reserved
2.15.6 Almanac Available and Number of Satellite Blocks in This Message
If the almanac is available for this position solution, the MSB (bit 7) is
set to “1”. A zero
(“0”) means no almanac. The next MSB (bit 6) is reserved, and the remainder of this field
(5:0) is a count of the number of satellite blocks that complete this message, starting
immediately with the next byte.
2.15.7 Block per PRN
This section of the CHNLSTATUS1B binary message data displays a block containing
the information for one satellite.