RightWay GPS Navigator RW 430 Guia do Utilizador descarregar pdf (Página 53)

GPS RTK Base GPS Receiver User Guide 51

Automatically Setting up a Mobile Base Station Using AutoBase Technology 7

4. The receiver reviews the previous base station positions stored in

the receiver.

5. The receiver does not find any base station that corresponds to

the current position.

6. The receiver creates a new base station location for the current

location.

7. The receiver sets the antenna height to 0. The antenna height is

measured to the antenna phase center.

CAUTION – On each reoccupation of the point, you must ensure that the

receiver antenna is set up in exactly the same location and at exactly the

same height. Trimble also recommends that you use a T-bar or Fixed height

tripod so that the position is easy to re-establish. Failure to achieve the

same height position for the antenna results in errors in heights in

subsequent measurements.

Where you set up each time with potentially different antenna

heights, Trimble recommends that on the first setup after

AutoBase has completed its process, that you edit the antenna

height (using the receiver keypad and display). The updated

antenna height changes the AutoBase setup, so that on

subsequent setups, when you again change the antenna height,

you will get correct height information during measurement. At

the first setup, Trimble recommends that you change the

AutoBase setup and antenna height before you carry out a site

calibration.

8. The receiver begins generating RTK CMR+ corrections.

9. The RTK corrections begin streaming over the internal radio. If

there is no internal radio, the receiver defaults to streaming the

corrections on the Lemo port.

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RightWay GPS Navigator RW 430 Guia do Utilizador Página 53