Lars Thrane Iridium Certus 200, Руководство пользователя и инструкция по установке

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LT-4200 User & Installation Manual Rev. 1.00 Appendixes
Lars Thrane A/S www.thrane.eu Page 115 of 128
App. F GNSS Receiver Integrity States
The LT-4200 system has a built-in GNSS receiver located in the LT-4230 Antenna Unit. The GNSS receiver is
used under normal conditions for providing the LT-4200 system with time, data, and position information
to all required functions in the system. GNSS Status is located in the System submenu (MENU -> System)
described and illustrated in
System starting on page 66. Table 35 illustrates the GNSS receiver integrity
states. The color marking has the following meaning:
•
Colored Yellow -> low integrity
•
Colored Orange -> Invalid
Table 35 is illustrating the GNSS receiver integrity states .The following pages will illustrate all relevant
states.
GNSS Receiver Integrity States (Automatic GNSS)
State UTC POSN
POSN
(age)
Horizontal
Accuracy
COG
[°]
SOG
[kts]
Comments
System has just booted
and there is not yet a
fix
Acquiring… Acquiring… - - - -
System booting
up
System has just booted
and only time is known
Time Acquiring… - - - -
System booting
up
Horizontal accuracy
> 50 m (SOG = 0 kts)
Time Lat/Long Up to date > 50 m XXX.X XX.X
System booting
up
Horizontal accuracy
< 50 m (SOG = 0 kts)
Time Lat/Long Up to date < 50 m XXX.X XX.X
Normal GNSS
receiver state.
SOG > 1 m/s (~ 2 kts)
Time Lat/Long Up to date < 50 m XXX.X XX.X
Normal GNSS
receiver state.
GNSS fix completely
lost (last known
position has age > 0
min)
Time (old) Lat/Long > 0 min - - -
No fix on GNSS
receiver (time
and position).
GNSS fix completely
lost (last known
position has age 23
hours 59 min)
Time (old) Lat/Long
≤ 23 hours
59 min
- - -
No fix on GNSS
receiver (time
and position).
GNSS fix completely
lost (last known
position has age >= 24
hours)
Time (old)
Lat/Long
Acquiring…
>= 24
hours
- - -
No fix on GNSS
receiver (time
and position).
Table 35: GNSS Receiver Integrity States (Automatic GNSS)