Spectra Precision ProMark 800 Reference Manual - Manual (Page 48)

36
Precise Surveying - Field Applications & Concepts
3. A data link must be established to transfer the base’s RTK
correction data to the rover. This data link can be
implemented in several ways:
– UHF radio
– Cellular modem (GSM, GPRS or CDMA)
– Other external device (e.g. Wi-Fi, spread-spectrum re-
broadcast).
4. Successful surveying requires getting the system to be
initialized and preserving initialization, or re-initialzing if
initialization is lost, throughout the survey. See
Initialization on page 49.
Rover
Radio or GSM
Radio or GSM
Radio or Cellular Data Link
User-Owned Base
Rover
Cell
u
lar Modem
In
ter
n
et
Cellular Data Link
Chosen Point
Base
Base
Base
Base
Connection to Third-
Party Base Network
Via the Internet
GNSS+SBAS
GNSS+SBAS
GNSS
GNSS+SBAS
Rover-Only Configuration
Base / Rover Configuration