Aetos Installation Manual
4.1
GNSS Signal Check
1
2
Figure 13:
GNSS antenna orientation:
1
O
– small, pure GPS antenna – the
GPS
text must be facing upwards, towards the sky.
2
O
– larger
combined GPS/Glonass antenna – the triangle must point upwards,
towards the sky.
1. Select
Options
on the main menu.
2. Select the
Info
icon.
3. Search for the
GNSS details
item and select it. A window like shown
on the Figure 14 will appear.
The window shows positions of the satellites on the sky. GPS constellation is
represented with disks and Glonass is represented with squares. All detected
positions are shown. Satellites used in the position calculation are colored
green. Grey color means that a satellite is being tracked, but it is not being
used in the solution.
Under unobstructed sky satellites should be evenly
distributed.
HDOP, VDOP and PDOP
values indicate quality of the solution. The mean-
ing of the DOP values is given in Table 2. In general, HDOP shall be always
be less than 5.
Vertical bars at the bottom of the screen indicate quality of the signal recep-
tion. Below each bar is satellite PNR number. Green color indicate satellites
used in positional measurements.
Solution fix is shown in the top right corner. It can be one of the following
values:
3
DOP – Dilution of precision, HDOP – horizontal DOP, VDOP – vertical DOP and
PDOV – combined DOP.
22
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Kanardia
2019–2020
