Polaris Connect app helps you to connect your Polaris S100 RTK receivers with a specified NTRIP caster via Bluetooth interface.
You can then build an RTK system for centimeter precision positioning.
Polaris NTRIP Server/Client supports NTRIP 1.0 protocol.
Polaris NTRIP Client supports VBS-RTK (or VRS-RTK) services like e-GNSS,“千寻位置”.
You can purchase Polaris Alpha+ Multiple-Frequency RTK Receiver from https://www.polaris-gnss.com
Be sure to set "Settings->Developer Options->Mock location app" to this app before use.