Leica GS18, User Manual

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6 Technical Data
6.1 GS18 Technical Data
6.1.1 Tracking Characteristics
Multi-frequency
☞
Depending on the satellite systems and signals configured, a maxi-
mum number of 555 channels is allocated.
System Signal
GPS L1, L2, L2C, L5
GLONASS
L1, L2, L3
*
Galileo
E1, E5a, E5b, AltBOC, E6
*
BeiDou
B1, B2, B3
*
QZSS L1 C/A, L2C, L5
NavIC L5
SBAS (WAAS, EGNOS, MSAS, GAGAN) L-band
*Believe to comply, but subject to availability of BeiDou I nterface C ontrol
D ocument 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.
6.1.2 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 r oot m ean s quare, 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 Horizontal Vertical
Static and rapid static 3 mm + 0.5 ppm 5 mm + 0.5 ppm
Kinematic 8 mm + 1 ppm 15 mm + 1 ppm
Satellite reception
Instrument channels
Supported signals
☞
☞
☞
Differential code
Differential phase in
post-processing
48 Technical Data