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RT product family
The RT product family is split into three divisions—all based on similar technology, and
within each division, there are a number of models serving different accuracy
requirements.
The RT family is split into the following divisions:
• RT2000s
Fitted with lower-cost GNSS receivers. Available in single and dual antenna models
and can be GLONASS enabled. 100 Hz and 250 Hz versions.
• RT3000s
Survey grade GNSS receivers provide high-precision position and velocity
measurements even in high multipath environments. Can be GLONASS enabled.
Single and dual antenna models are available. Update rates up to 100 Hz.
• RT4000s
These products are identical to the RT3000 series, but have an update rate of up to
250 Hz.
The models contained within each division are listed in the “Specification” section on
page 20.
Single antenna
An advanced algorithm in the RT software means most road vehicle customers are able
to use a single antenna system. The Heading lock and Advanced slip features allow RT
devices to maintain an accurate heading while stationary and while driving with low
vehicle dynamics.
Dual antenna
Dual antenna systems provide high accuracy heading information and almost constant
heading performance under all conditions. Single antenna systems can experience
reduced heading accuracy on aircraft, boats or in low speed land vehicles.
For aircraft or marine applications, or road vehicle applications on low-friction surfaces
(e.g. ice), a dual antenna system is recommended to maintain high accuracy heading.
Advanced processing in the RT allows relock to occur after five seconds of a sky-
obstruction—unlike GNSS-only systems which can take several minutes; in this time the
RT’s heading will not have significantly degraded. The fast relock time is made possible
because the RT’s own heading is used to resolve the ambiguities in the GNSS
measurements. Resolution of these ambiguities is what normally takes several minutes.
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