Juniper Systems Juniper Aspect - Manual (Page 128)

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Juniper Aspect Owner’s Manual
Troubleshooting
GPS Tips
Getting Good GPS Reception on the Mobile Computer
Being in an open field with no interference is the most
ideal situation for GPS coverage. This won’t always
happen so it’s good to know how to get the best GPS
coverage in most situations. Things that can interfere
with GPS reception are buildings, trees, your body, etc;
anything that would obstruct GPS signals coming from
satellites above your head. Try the following tips:
„
Step away from these obstructed areas until you’re in
more of a clearing.
„
Stand with your back to the building.
„
Hold the mobile computer away from your body.
„
In the Western Hemisphere, try not to face east while
mapping (face west).
„
Watch your PDOP settings; the lower the better.
„
Try to get the most satellites visible.
„
If you’re near a building and you’re getting 12 of 12
satellites visible, then there are some multi-path errors
going on (it would appear some satellites are getting
counted twice).
„
Set the point averaging to collect more points (settings
screen).
„
For best results, let the unit sit out for awhile in the open
to collect the full almanac of data before getting
started on a project. Fifteen to twenty minutes is
recommended.
GPS Starts Drifting
When you’re standing still and the GPS point starts
moving around, this means that there is interference
nearby affecting your signal. The best way to avoid this is
to walk away from overhead obstructions and try to get
into more of a clearing.