Specifications

Kinematic

The Kinematic method also requires an initialization as de-

tailed in the Stop-and-Go method.

Kinematic data collection does not use an occupation timer

since kinematic data is collected while moving. The recording

interval must be set to a value that properly matches the

speed you are moving.

A recording interval set too slow may result in data that does

not represent the feature being surveyed. A recording interval

set too fast may result in data too dense for a particular appli

cation (This is also true in Static and Stop-and-Go).

The base and kinematic units must be set to the same record-

ing interval for successful kinematic survey.

Real-Time Surveying

If a base/rover configuration is used, time is needed first to in-

stall and run the base. Allow for about 5 to 15 minutes to

complete this installation phase.

Then, and whatever the survey type, rover initialization is re-

quired at power-on before operators can start their jobs.

The initialization time depends on the environmental condi-

tions, mainly sky view, which has a direct impact on the num-

ber of satellites received, and the baseline length, i.e. the

distance to the base providing the RTCM corrections.

In general, RTK initialization is achieved after 1 to 3 minutes

of operation under open sky, and for a baseline length less

than 6 miles (10 km). See performance figures in

Time to First

Fix (TTFF) on page 223.

In point logging mode, operators will have to stay on each

point for typically 10 to 15 seconds to let the ProMark3 RTK

average the successive position solutions computed during

this time. Operators are however allowed to reduce this time

but they should be aware this may affect position accuracy.

In kinematic mode, operators should adjust the pace to the re-

cording interval they choose. In Time mode, the recording in-

terval can range from 1 to 30 seconds. In Distance mode, the

default setting is 10 meters.

In stakeout mode, once operators get close to their stakeout

points (about 20 meters still to go), they should slow down the

pace to let the ProMark3 RTK respond to their moves. By do

ing this, they will allow their units to deliver the accurate guid-

ance instructions they need to get to their points.