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1 Overview
1-1 Introduction
S100 is a high performance dual-frequency RTK receiver with Bluetooth and USB interface. It offers
centimeter-level positioning accuracy suitable for surveying, mapping, and GIS data collection.
By default, S100 is shipped as RTK rover to accept RTCM3.x message or SkyTraq carrier phase raw
measurement data from an RTK base, and provides centimeter-level accurate position result relative to
the RTK base in standard NMEA message format.
S100 can also be configured as a RTK base to provide RTCM3.x message or SkyTraq carrier phase raw
measurement output.
S100 has two major interfaces for different applications: USB and Bluetooth. The USB interface is mainly
for configuration, monitoring, and supplying power. With Bluetooth V2.1+EDR function built-in, S100 can
be used as external Bluetooth RTK receiver for Android Mobile Device to provide higher accuracy
positioning than internal GPS.
1-2 RTK Operation Guideline
To provide centimeter-level RTK accuracy, S100 requires much better operating condition than
conventional meter-level accuracy GPS receiver:
Baseline distance between base and rover should be under 30Km.
Open sky environment without interference and signal blockage
Received signal level should be no less than 40dB/Hz.
10 or more satellites with elevation angles over 15 degrees
Good satellite geometry with satellites spread over four quadrants of the sky.
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