ProNav Norway – a
Company
page 38
Rev.2
10.02.2020
GNSS Overview
GNSS operation
The GNSS receiver is always operating, regardless of the DGNSS mode of
operation. The following sections describe the general operation of the
V200n’s internal GNSS receiver.
Note:
Differential source and status have no impact on heading, pitch, or
roll. They only have an impact on positioning and heave.
The V200n provides accurate and reliable heading and position
information at high update rates. To accomplish this task, the V200n uses
a high performance GNSS receiver and two antennas for GNSS signal
processing.
One antenna is designated as the primary GNSS antenna and the other is
the secondary GNSS antenna. Positions computed by the V200n are
referenced to the phase center of the primary GNSS antenna. Heading
data references the Vector formed from the primary GNSS antenna
phase center to the secondary GNSS antenna phase center.
The heading arrow located on the bottom of the V200n enclosure defines
system orientation. The arrow points in the direction the heading
measurement is computed (when the antenna is installed parallel to the
fore-aft line of the vessel). The secondary antenna is directly above the
arrow.
