NovAtel Application Note
APN-048 Rev 3
ALIGN Application Note
page 6 of 10
4.
Connect the other wireless data link to an available COM port (i.e., COM2) on the Rover receiver.
5.
Configure COM2 of the Rover receiver to receive corrections and output heading information at
the same baud rate as the wireless data link:
INTERFACEMODE COM2 RTCA NOVATEL OFF
COM COM2 230400 N 8 1 N OFF ON
LOG COM2 HEADINGEXTB ONNEW
6.
To access heading and relative positioning data, ALIGN logs can be logged at either the ALIGN
master or rover.
3.3
Use Case 3:
Daisy-Chain ALIGN setup (ALIGN Heading)
This use case illustrates multiple Master and Rover receivers in a daisy chain type setup. There is one
main Master receiver on one platform as a moving reference, with multiple Rovers on other platforms.
Each Rover can act as the Master receiver for the next Rover receiver by transmitting ALIGN RTCA
corrections to the next receiver.
Figure 3 illustrates the main Master receiver on a seismic research vessel. The Rover receivers are located
in a series of buoys, with each Rover receiver acting as a Master for the next receiver. Relative heading
and pitch are computed with respect to its linking Master receiver. The HEADING2 log is useful in this
kind of configuration.
Figure 3: Use Case 3 – Daisy-Chain ALIGN setup
Plug and Play with Wireless Data Link
3
:
1.
Configure the wireless data links between each master and rover pair for two-way communication,
using the same baud rate (i.e., 230400bps)
