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Permanent
GPS Stations
GPS is
not a one-size-fits-all technology. Different position-monitoring
problems require different
technical
approaches. (Read more about network design (later).)
This is why our core GPS network components - our stations -
are designed
in
a modular
fashion:
to allow
easy variation to suit your project.
But it is useful to have a starting point for this
discussion. Therefore,
we provide two base designs as models
for fully-operational stations. These systems - which use
top-shelf components from leading manufacturers - can be deployed
as-designed to provide immediate, stand-alone network
service,
or they can be modified
at multiple levels to suit your network environment
and goals.
The main difference between these two systems
is the option of single-frequency (L1) vs. dual-frequency (L1/L2)
carrier-phase-capable GPS receivers and antennas as the source
of observation data. A related option is the solar power array and
backup capacity needed to power that equipment. These
choices will be dictated primarily by your application. |
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Baseline Station Configurations
GPS-L1-900S-S50 |
GPS-L2-900S-S100 |
| Single frequency
GPS monitoring station with spread spectrum wireless transceiver,
solar power supply and battery backup |
Dual frequency
GPS monitoring station with spread spectrum wireless transceiver,
solar power supply and battery backup |
| Thales-Ashtech G12 Sensor GPS
receiver system with L1 Marine IV antenna and 50' GPS
antenna cable |
Thales-Ashtech Z-Sensor GPS
receiver system with
L1/L2 Marine IV antenna and 50' GPS antenna cable |
| 902-928
MHz spread spectrum wireless transceiver with 3 dB omni antenna
and
30'
RF antenna
cable |
902-928
MHz spread spectrum wireless transceiver with 3 dB omni antenna
and 30' RF antenna cable |
| 50 W 12VDC solar power array
with 98 Ah battery backup including fully-automatic
solid-state charge management and long-life maintenance-free,
sealed, deep-cycle
batteries |
100 W 12VDC solar power array
with 196 Ah battery backup including fully-automatic
solid-state charge management and long-life maintenance-free,
sealed, deep-cycle
batteries |
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Orion's
GPS stations utilize two (2) enclosures, a NEMA-3R enclosure
for
the solar
system (charge controllers and
batteries) and a NEMA-4 enclosure for the GPS and communications
hardware. The GPS enclosure includes a pre-fabricated backing/mounting
plate with DIN rail power and ground connections. Systems are
shipped with side-of-pole solar panel and enclosure mounting
hardware.
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| Solar power systems come in
UL and non-UL rated designs for most configurations. |
| Cable assemblies for both
GPS and RF antennas include bulkhead-mount surge/lightning protection. |
| All systems come pre-integrated
with power and antenna cable conduit connectors installed and
are delivered ready to install. |
Modify to Suit
From these base designs we tune each station to develop
the most effective station(s) at the best possible price. To achieve
these goals it takes
maximum flexibility in the choice of:
- GPS receiver type: dual or single frequency; high-rate
data, other firmware requirements
- GPS antenna type: survey or geodetic grade; choke ring or ground
plane; radome design
- Communications: wireless, wired; ethernet
or other; wireless antenna power and design
- Power supply: solar or AC supply, load capacity, backup
capacity; chargers and controllers
- Cable assemblies: cable type (key
to line loss); connector type(s); cable length; lightning protection
- Enclosure style and size
- Site-level alterations to reflect site-local infrastructure
(power and comm) and environment (multipath)
Whether your goal is a hardened installation
for long-term geophysical or structural deformation monitoring or
a small-footprint installation for short-term
deployments,
we can provide a station that ideally suits your needs.
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