Download - Coordinates

surveyors, this translates
into longer RTK baselines as
well as more reliable RTK in
congested environments. With
Hemisphere GPS’ exclusive
SureTrack intelligence there
is no longer the concern
of mixing GNSS data from
various manufacturers.
There is an emphasis
on the ‘high quality’ of
Hemisphere GPS’ S320 GNSS
receiver. Please explain its
edge over other existing
receivers in the market.
Hemisphere GPS is a
Canadian company that has
been manufacturing rugged
and reliable GNSS products
for more than 20 years. Our
focus is, and always has been,
on building products that can
standup to the most demanding
environmental conditions. S320
is a great example of this.
The extremely tough Lexan
plastic used to build the S320
is the same material used in
the manufacturing of hockey
helmets. We understand that
test environments and reallife
conditions are not always
the same. That’s why we
built it to your specifications
- Surveyor Tough.
How are the issues related
to data storage and battery
backups addressed in S320?
With the SD/SDHC card slot
secured behind the battery
door, users can safely log
large amounts of monitoring
data, static observations data
and extended survey projects
onto the factory included 2GB
memory card. The SD card can
also be used for much more
including upgrading firmware
and loading configuration files
such as NTRIP. If you prefer to
leave the SD card in the unit,
you can wirelessly download
the data by streaming it
through one of the two
Bluetooth ports provided.
As for battery life, Hemisphere
GPS’ S320 comes standard
with two long-life lithium ion
batteries which will give more
than 10 hours of operation. The
batteries are hot swappable
so you can change either
one without powering off
the unit. Also, the batteries
used by S320 are in industry
standard, so you can easily
buy extras at any supply store.
What makes the S320
antenna design unique?
Our proprietary “Cross
Dipole” antenna design used
in the new S320 is a very
efficient, wideband solution
with excellent phase center
stability and polarization. It
is specifically engineered
to receive all current GNSS
signals as well as all planned
GNSS signals around the
world. The advantage of this
tall cross dipole design is
its ability to maximize signal
gain all the way down to the
horizon, which allows it to
receive weak satellite signals
very low in the sky - while
rejecting reflected multipath
signals that can reduce
receiver accuracy. The height
also permits retention of right
hand circular polarization
for additional multipath
rejection when capturing the
desired low angle signals.
This is an important feature
in order for the antenna to
function effectively in very
tough environments.
Customer Speak
"The system was demoed
yesterday to a number of
managers from different
divisions of ARA (Applied
Research Associates, Inc.)
and was very well received.
Neither we or nor anyone else
who has seen this system can
fi nd a single fault with the
S320. It performs fl awlessly,
setup is a breeze and we
have yet to run out of battery
life. The ability to hot-swap
batteries is fantastic. The
accuracy, repeatability and
speed of acquisition is superb.
Nice job!"
Mark Boettcher
Senior Computer Scientist
Applied Research Associates, Inc.
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