Technical Data; Gs18 Technical Data; Tracking Characteristics; Accuracy - Leica GS18 User Manual

6
6.1
6.1.1
Satellite reception
Instrument channels
Supported signals
☞
☞
6.1.2
☞
Differential code
Differential phase in
post-processing
48

Technical Data

GS18 Technical Data

Tracking Characteristics

Multi-frequency
☞
Depending on the satellite systems and signals configured, a maxi-
mum number of 555 channels is allocated.
System
GPS
GLONASS
Galileo
BeiDou
QZSS
NavIC
SBAS (WAAS, EGNOS, MSAS, GAGAN)
* B elieve to comply, but subject to availability of BeiDou Interface Control
Document and Galileo commercial service definition.
Carrier phase and code measurements on L1, L2 and L5 (GPS) are fully inde-
pendent with AS on or off.
Support of NavIC L5 is incorporated and will be provided through future firm-
ware upgrade.

Accuracy

Accuracy is dependent upon various factors including the number of satellites
tracked, constellation geometry, observation time, ephemeris accuracy, iono-
spheric disturbance, multipath and resolved ambiguities.
The following accuracies, given as root mean square, are based on measure-
ments processed using Leica Infinity and on real-time measurements.
The use of multiple GNSS systems can increase accuracy by up to 30% relative
to GPS only.
The baseline precision of a differential code solution for static and kinematic
surveys is 25 cm.
Type
Static and rapid static
Kinematic
Signal
L1, L2, L2C, L5
*
L1, L2, L3
E1, E5a, E5b, AltBOC, E6
*
B1, B2, B3
L1 C/A, L2C, L5
L5
L-band
Horizontal
3 mm + 0.5 ppm
8 mm + 1 ppm
*
Vertical
5 mm + 0.5 ppm
15 mm + 1 ppm
Technical Data