Simrad HS52, Инструкция по эксплуатации

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OPERATING INSTRUCTIONS
20222360 / E
43
•
HDG-Q . The quality of the heading measurements. The
heading status indicator is a three level state status bar
showing normal, reduced or invalid heading. Two black bar
graphs indicate normal accuracy, one black and one white
bar graph indicate reduced accuracy and two white bar
graphs indicate invalid heading.
•
POS-Q . The quality of the position measurements. The
position status indicator is a three level status bar showing
normal, reduced or invalid position. Two black bar graphs
indicate normal accuracy, one black and one white bar graph
indicate reduced accuracy and two white bar graphs indicate
invalid position.
•
Integrity . The system integrity is a three level status
indication plus a number showing the selected accuracy
level in meters. The states are Safe, Caution and Unsafe. On
the display, the visual indicators are shortened into SAFE,
CAUTN and USAFE.
•
LNK . The link indicator shows whether any valid RTCM
104 message is received on any correction link within the
selected time limit. If a radio beacon receiver is built-in in
the Sensor unit (delivered on request only) the limit is
according to IMO requirements set to 10 seconds. The link
status indicator is a two level status bar showing whether a
valid RTCM message is received (one black bar graph) or
not (one white bar graph).
•
DIF . The DGPS indicator is a two level status bare showing
whether differential corrections are input and used in the
position solution or not. One black bar graph indicates that
differential corrections are used. One white bar graph
indicates that it is not used.
•
COG . The course over ground status indicator is a two level
status bar showing whether a valid COG is calculated (one
black bar graph) or not (one white bar graph). Be aware that
COG will only be valid (calculated) as the vessel is moving.
•
SOG . The speed over ground status indicator is a two level
status bar showing whether a valid SOG is calculated (one
black bar graph) or not (one white bar graph).
The Simrad HS52 GPS receivers include a RAIM exclusion and
detection algorithm implemented to detect satellite failure. The
RAIM algorithm is implemented as described in "Guidelines for
the use of differential GPS in offshore surveying". 3rd Draft
May 1994. The same algorithm is used both for the GPS
heading and GPS position calculation.