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Selecting a DGPS Mode
Introduction
MobileMapper CE can be operated in one of the following
DGPS modes:
1.
SBAS
: Differential corrections from SBAS satellites
(SBAS) are received by MobileMapper CE itself through
one of its GPS reception channels. This is the most
straightforward technique to implement DGPS in
MobileMapper CE.
2.
Beacon
: Differential corrections are received by the belt-
carried Magellan MobileMapper beacon. This unit is con-
nected to the MobileMapper CE via Bluetooth or a serial
cable.
3.
Direct IP
: Differential corrections are taken from the Inter-
net at a fixed IP address. They are routed to MobileMap-
per CE via a GSM/GPRS cell phone and Bluetooth.
4.
NTRIP
(=Networked Transport of RTCM via Internet Proto-
col): Same as Direct IP except that the DGPS correction
provider uses the NTRIP protocol to route correction data.
5.
Other RTCM Source
: Differential corrections are received by
third-equipment delivering RTCM2.3 message types #1,
#3 and #9. This third equipment is connected to
MobileMapper CE via a serial cable or Bluetooth.
The table below summarizes the connection and identification
data needed when operating in the NTRIP or Direct IP mode.
Parameter
Direct IP
NTRIP
Host IP Address
•
•
Port Number
•
•
Login
•
Password
•