Magellan ProMark3 RTK Getting Started Manual page 18

12
4. ProMark3 RTK Configurations
Base
Radio Data Link
Base/Rover
(Base/rover System)
5. Rover Initialization. Before starting a survey, the rover
must be initialized. There are three possible methods:
"On The Fly", "Known Point" and "Bar". The "Bar"
method can only be used if you have your own base.
The initialization methods are introduced in the post-
processing chapter (see page 42). The description is
accurate for real-time processing too. Unlike post-pro-
cessing though, real-time processing tells you in real
time when initialization is complete.
Compared with post-processing surveying, RTK survey-
ing proposes a fourth initialization method called "Stat-
ic". With this method, the antenna should stay still over
an unknown point until initialization is achieved. This
method gives faster initialization than "On-The-Fly"
initialization in the same operating conditions.
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.
Rover
Internet
GPRS Data Link
Rover-Only
(Network Connection)
Rover
+ Cell
Phone