Specifications

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4. ProMark3 RTK Configurations
5. Rover Initialization. Before starting a survey, the rover
must be initialized. There are four possible methods:
“On The Fly”, “Static”, “Known Point” and “Bar”. The
“Bar” method can only be used if you have your own
base.
Three of the initialization methods are introduced in
the post-processing chapter (see page 98). The de-
scription is accurate for real-time processing too. Un-
like post-processing though, real-time processing tells
you in real time when initialization is complete. The ad-
ditional “Static” method is similar to “On The Fly” but
requires that the antenna be kept still (on an unknown
point).
The time required for initializing the rover ranges from
a few seconds to a few minutes, depending on the base-
line length, the GPS constellation and the initialization
method used.
“Known Point” and “Bar” are the fastest initialization
methods.
6. Baseline Length. Whatever the base used, its distance
to the rover, called “baseline” (up to 1.6 km or 1.0 mile
with license-free radios, up to 10 km with a network
connection), must roughly be known to make sure RTK
positions will achieve the expected level of accuracy.
Base/Rover
(Base/rover System)
Rover-Only
(Network Connection)
Base
Rover
Radio Data Link
Rover
GPRS Data Link
Internet
+ Cell
Phone