Product Manual

65
Relative RTK Rover Reminder: Relative RTK refers to the ability for the SP90m to
compute and deliver the three components of the vector
connecting it to a mobile base. The components of the vector
are provided with centimeter accuracy.
One of the typical applications of Relative RTK is the
constant monitoring of the position of a vessel relative to that
of another vessel or to the jib of a crane on a quay.
On the receiver’s General Status screen, the receiver will
display “AUTO” or “SDGPS” when computing a position in
standalone or SBAS mode. The computed position is
displayed after pressing .
The components of the vector are visible in the Web Server
(in Receiver > Position > Vectors tab on the right) or by
programming an NMEA VCR or VCT message on one of the
receiver ports (see Web Server’s I/Os tab).
When corrections are received and used, is displayed on
the General Status screen together with the age of corrections
(see General Status on page 27).
To configure the receiver in Relative RTK, use the Web Server
as follows:
• Go to Receiver > Position > Rover Setup.
• Set Processing Mode to Only Relative RTK.
• Select how the corrections are being transmitted to the
receiver by setting Input Mode accordingly. If you choose
Automatic, the receiver will find by itself which of its ports
are used to acquire the corrections. If you choose Manual,
you need to specify the port.
• Additionally, in the Other Settings section, you may change
the primary GNSS system used (GPS is the default
selection) or change the Output Position Type field. Be
1
3-D Components
of Vector
3-D Vector
One set of corrections from moving base via:
• Internet (Ethernet, cellular modem, or WiFi), or
• UHF Radio
Corrections
from moving base
to compute
3D-vector