Intuicom RTK Bridge - 1.5 Extending Cellular Data Reach

Section 1: Overview
Spider/VRS/
NTRIP Caster
Intuicom RTK
Bridge - Cellular
Intuicom 900 MHz
Spread Spectrum
Wireless Data
RTK Rover
Machine
Control
Construction
Agriculture
RTCM 3.x
RTCM 2.x
CMR/CMR+
Leica
Internet
CDMA/GSM
GSM/CDMA
Wireless Internet/Data
RTK Corrections
Figure 1-4: RTK Bridge Extending Carrier Data Network
Extending CDMA/GSM Data Service Reach – In this example, rovers are operating in an area
not directly covered by CDMA/GSM cellular data service. The rovers however are still within
the network of GNSS reference stations and thus can benefit from a network correction. Using a
high gain antenna on the CDMA/GSM cellular modem, a reliable connection can be established
allowing the RTK Bridge to connect to the Internet and the GNSS network server. Corrections
are streamed from the GNSS network server to the RTK Bridge where they are broadcast over an
Intuicom Wireless Data Network to all RTK rovers. In this case the rovers are utilizing Intuicom
1200 Data Link radios to receive the correction messages. Note that in this application, any
number of Rover users can receive the same correction messages broadcast from the RTK
Bridge. Furthermore, if the distance between the RTK Bridge and the rover users is great – the
RTK Bridge can be configured to report its position to the GNSS Network server as if it were in
the location of the rovers – further optimizing the network correction generated by the GNSS
network server.
Revision 1.4 5 © 2009 Intuicom, Inc.