Figure 50: Posview Gams Solution And Status Pane - Applanix POS MV V5 Installation And Operation Manual

POS MV V5 Installation and Operation Guide
System
Operation
• The Status pane will show GAMS as Not Ready. This indicates that GAMS has not
resolved the carrier phase ambiguities.
• The GAMS Solution window shows SVs in solution, A priori PDOP and Antenna
Separation.
• In addition, the GAMS Solution window shows:
o
o
2. If POS MV is tracking fewer than five satellites, or if the indicated Position Dilution of Precision
(PDOP) is greater than 4.5, then GAMS becomes dormant. In this dormant state, GAMS
continues to monitor tracked satellites but does not process the observables from the GNSS
receivers. GAMS status displays Not Ready.

Figure 50: POSView GAMS Solution and Status Pane

3. Following the successful completion of coarse levelling, the POS Mode transitions to Degraded
Navigation status. During this time, errors in the reported roll and pitch angles will be larger than
0.05°. If five or more satellites are being tracked and the indicated PDOP is less than 4.5 then
GAMS begins the On-the-Fly (OTF) ambiguity search, using only the antenna separation distance
to aid the search process. GAMS status displays Not Ready.
4. When the POS Mode transitions to Nav Aligned status, the errors in the reported angles of roll
and pitch will be less than 0.075° RMS. The heading error remains large - in the order 10° to 15°
RMS - unless the vessel performs dynamic manoeuvres, in which case errors may fall to below
5°.
5-18
For BD960 GNSS receiver equipped POS systems a list of satellites (SVs or space
vehicles) that are being tracked by POS MV. The order in which they appear in the
window is not important.
For BD982 GNSS receiver equipped POS systems the calibration status completion
bar.