Specifications

User InterfaceGPS and Assisted GPS
60Operating Manual 1171.5248.12 ─ 15
The "Sky View" section displays the current position and state (active or inactive) of the
satellites. When "Auto SV Selection and Update" mode is selected, the real-word situation
of disappearance and re-appearance of satellites can be observed.
The "Real-Time S.P.O.T." display is updated every 5 second and a special dynamic time
tuning algorithm is used to optimize the presentation of the "Map View" display. However,
if GPS receiver software is used to analyze the generated GPS signal, a slight difference
between the receiver position displayed on the Map View and the position displayed on
the receiver software may be noticed at the beginning of a simulation. This accuracy of
the "Map View" display is progressively increasing with the time elapsed and after the
first satellite handover the deviation should completely disappear.
Example:
Both figures in this section show the "Real-Time S.P.O.T." display of the same custom
build GPS scenario with satellite handover but the second one is made around an hour
and a half later (compare the values of the parameters "Time of Simulation" and "Elapsed
Time" in both figures).
The "Map View" shows the current position of the receiver which in this particular case
is a moving receiver with "Read Out Mode" set to "Round Trip" (compare both trajectories,
the receiver on the first one is moving clockwise and on the second one counterclock-
wise).
The current position and state of the satellites is displayed on the "Sky View". This is a
GPS scenario with 8 satellites and a satellite handover had been performed (compare
the satellite constellations, the position and number of active and inactive satellites is
different; satellites with SV ID 6, 1 and 9 had disappeared behind the horizon).
Real-Time S.P.O.T.