User's Manual

12
GS10/GS15, Description of the System
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Once the first operational Galileo satellites are available, a software update will be
required.
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The GS GNSS instruments are additionally designed to support Compass. The
Compass signal definition is not fully finalised, although, test signals have been
tracked in a test environment. As changes can still occur, Leica Geosystems cannot
guarantee full Compass compatibility.
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The GS GNSS instruments use the GPS P-code signal, which by U.S. policy is liable to
be switched off without notice. Phase measurements on L2 are ensured as these
instruments automatically switch to patented tracking techniques.
GS15 Up to 16 L1, 16 L2, 16 L5 channels (GPS), up to 14 L1, 14 L2
channels (GLONASS), up to 14 E1, 14 E5a, 14 E5b, 14 Alt-BOC
channels (Galileo), four channels SBAS (EGNOS, WAAS, MSAS,
GAGAN), code and phase, real-time capable
Instrument Description