ashtech HDS800, Справочное руководство

Страница: 167 / 678

151
Web Server Help Files Collection
Configuration Tab
instead, until the primary RTK solution is back again and
valid.
Heading
This page is used when you want the receiver to deliver
heading, roll or pitch measurements.
• Internal heading : This mode requires that the two GNSS
antennas used be connected to the receiver via two
separate inputs. In this mode, the receiver uses its two
GNSS boards, one to receive and process signals from
“Antenna 1” (the primary input), and the other to receive
and process signals from “Antenna 2” (the secondary
input).
The “Antenna 1” input is the rear panel coaxial connector
marked with a satellite icon.
The “Antenna 2” input is the rear panel coaxial connector
marked with sat clock icons.
• External heading : The receiver uses its own antenna
connected to the “Antenna 1” input (same as above). One
of its ports is declared as the one providing the receiver
with corrections in ATOM or RTCM-3 format from an
external GNSS receiver to which the second GNSS
antenna (defined as “Antenna 2” on your receiver) is
connected. The local “Antenna 2” input is not used here.
Combining these incoming data with the data from its own
antenna, the receiver will be able to determine the
heading of the baseline connecting the two antennas.
The two antennas should be installed to guarantee an ever-
fixed baseline length.
Warning!
The heading determined by the receiver always depicts the
direction from “Antenna 2” to “Antenna 1”
.
Depending on the orientation of the baseline with respect to
the vehicle centerline (ship, plane, land vehicle, etc.), the
receiver will either compute the pitch or
roll angles. The value you assign to the azimuth
Parameter Designation $PASHS
Hot Standby
RTK Check this option if you want the rover to operate in
Hot Standby RTK.
CPD,MOD
Stream
This field is visible only after the above option has
been activated. Choose the port routing the differen-
tial data stream feeding the second RTK engine. This
may be A, B, C, D, E, F, I or P.
CPD,MOD