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Oxford Technical Solutions
Select the Correction type you wish to use from the box and then select the Baud rate.
The most common baud rates used for differential corrections are 4800 baud and 9600
baud. The RT-Base S and GPS-Base use 9600 baud. The values in the Data bits, Parity
and Stop bit boxes should be set to match the incoming signal.
When selected, the Enable NTRIP corrections box configures the RT for RTCM
corrections and sends an NMEA GGA message out from J3 back to the NTRIP server.
The Networked DGPS controls allow an RT to be configured to broadcast or receive
differential corrections over Wi-Fi when connected to an RT-XLAN. When Network
correction transmitter is selected, an RT will broadcast differential corrections it is
receiving via a radio modem from an OxTS base station, using its RT-XLAN. Other RT
devices that are on the network as the broadcasting RT, will then be able to receive the
DGPS messages and use them. To do this, the Network correction receiver option
should be selected on those devices, and the IP address of the system carrying the radio
modem should be selected from the box. Using this system reduces complexity in
situations where multiple RTs need DGPS corrections as only one pair of radio modems
needs to be used.
Networked DGPS can also use corrections received via NTRIP, rather than a local base
station. As before, the RT that is connected to the NTRIP server should be configured
with Network correction transmitter selected. Other RTs should be configured with
Network correction receiver selected, and the IP address of the system that is configured
as the transmitter should be selected in the box.
Regardless of whether DGPS corrections are received via NTRIP or a local base station,
only RTCMv3 corrections are currently supported in networked DGPS mode.
SBAS
Adjustment: select a predefined value from the drop-down list.
In Europe, North America, and Japan SBAS can be used for differential corrections.
These services will improve the position accuracy of the RT. In North America the SBAS
service is known as WAAS, in Europe it is known as EGNOS and in Japan it is known
as MSAS. Select the option that is most suitable for the territory you are in.
DGNSS service
Adjustment: click … button to open properties window.
Select either Automatic or Manual from the corrections drop-down list in the properties
window to enable corrections.
When manual is used, the correct satellite should be selected for the region where you
are operating.
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