Ag Leader ParaDyme Operation Guide - Manual (Page 46)

44 Ag Leader Integra and Versa Firmware Version 4.3 / Edge Firmware Version 5.1
6. Press the check mark button at the confirmation
prompt. The saved location is updated and the Base
Location screen reappears.
7. Begin your next work session. All subsequent work
will be repeatable and have accurate latitude and
longitude. You will not use the Update function again for
this Base Station.
O
MNI
STAR
The OmniSTAR screen enables you to view information about your OmniSTAR subscription, to select a
startup accuracy and to select a channel according to your geographical location. OmniSTAR correction
signals are optional for the ParaDyme system.
OmniSTAR Background Information
OmniSTAR is a wide-area differential GPS service, using satellite broadcast techniques. OmniSTAR
offers GPS correction services that improve the accuracy of a GPS receiver.
The OmniSTAR service include dual frequency (L1/L2) carrier phase solutions. Accuracy depends on
satellite geometry, local conditions, receiver capability and other variables. Typically, the L1/L2 solutions
(OmniSTAR HP, OmniSTAR XP or HP/XP combined) provide horizontal accuracies of +/- 15 cm.
OmniSTAR correction signals are proprietary, and a subscription must be purchased from the
OmniSTAR corporation to receive a subscription authorization.
The OmniSTAR HP and XP services require OmniSTAR-capable dual-frequency GPS receivers. By
using L1/L2 atmospheric corrections and carrier phase techniques, these services achieve higher levels
of accuracy.
OmniSTAR is a Differential GPS (DGPS) System. It is capable of improving regular GPS to sub-meter
accuracy. GPS computes a user's position by measuring pseudo-ranges to three or more GPS satellites
simultaneously. The pseudorange (from pseudo- and range) is an approximation of the distance
between a satellite and a navigation satellite receiver - for instance, Global Positioning System (GPS)
receivers.
In North America, a single satellite is used, but it needs three separate beams to cover the continent.
The three beams are arranged to cover the East, Central, and Western portions of North America. The
same data is broadcast over all three beams, but the user system must select the proper beam
frequency.
To obtain an OmniSTAR subscription, phone your local OmniSTAR office:
• North and South America: +1 888-883-8476
• Australia: +61-8-9322-5295 or visit: http://www.omnistar.com
When you phone OmniSTAR they can usually provide your subscription over the phone and you can see
the subscription status change. OmniSTAR offers a quick, efficient subscription initialization and renewal
service available 24 hours a day.
There are two levels of OmniSTAR service available with the ParaDyme system:
• OmniSTAR XP - XP is defined as better than 20 cm
• OmniSTAR HP (High Performance) - HP is defined as better than 10 cm