Leica Geosystems GPS System 500 Equipment - User Manual - Manual (Page 35)

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GPS Equipment User Manual - 4.0.0en
Getting started with the new Survey equipment
GS50 / GS50+ Sensor
The GS50 / GS50+ sensor consists
of both a handheld terminal (TR500),
and the GPS receiver itself. The GPS
receiver receives the GPS signal from
the NAVSTAR satellites and calcu-
lates a range to the satellites that are
visible.
Receiver Hardware
The GS50 is a 12-channel L1 code
and phase GPS receiver. The stand-
ard GS50 does not record phase
measurements for post processing
purposes. Phase measurements are
used internally to smooth
pseudorange measurements for
higher code positioning. Phase
measurement recording for post
processing is available as an option.
There are three antennas available
with the GS50:
• AT501 – tracks L1 only (GS50).
• RTB Combined Antenna - tracks
L1 and RTCM differential signal
from public and private beacon
infastructure.
• RTS Combined Antenna - tracks
L1 and differential signals from
Racal DGPS Satellite systems.
The GS50+ is a 12-channel L1, 12-
channel L2 code and phase GPS
receiver. The standard GS50+
records code and phase measure-
ments for post processing and / or
uses DGPS for real-time code-only
positioning. RTK is available as an
option.
There are three antennas available
with the GS50+:
• AT502 – tracks L1 and L2. Mainly
used for Rovers and References.
• AT503 – Choke Ring Antenna
tracking L1 and L2. Mainly used for
Reference stations.
• AT504 – JPL Design Choke Ring
Antenna tracking L1 and L2. Mainly
used for Reference stations.
Getting started with the new GIS equipment