NavCom SF-3040 Rev.F - Manual (Page 57)

SF-3040 Product User Guide
– Rev. F
2-55
radio modem and an external radio modem. Refer
to Chapter 7 for detailed information.

Signal Reception: The SF-3040 GNSS engine
includes a digital ASIC to handle high speed signal
processing.

StarFire Over IP: The StarFire network is available
over the internet. When a data collection device
with internet access is connected to the SF-3040
with supporting software (i.e. FieldGenius or
SurvCE), an independent StarFire server/caster
can be accessed through four mount points. A
choice of three data delivery rates ensures
maximum reliability.

RapidRecovery: The Rapid Recovery feature
provides a way to more quickly recover from the
loss of StarFire corrected positioning after loss
and recovery of navigation. The receiver starts
using these corrections when the link to the
navigation satellites has been lost, or has
degraded to a specified quality value called Figure
of Merit (FOM) which represents the best-guess
accuracy of the horizontal position. Convergence
time in StarFire mode is virtually eliminated under
certain conditions following a very brief
navigational outage.

NavCom recommends using a FOM value
in the range of 5-10.

This feature is available only on the GPS
portion of the StarFire correction, which
constitutes the larger weighted component
of the correction.

RapidRecovery with QuickStart: This feature
enables Rapid Recovery when an accurately
known ITRF08 position is used to initialize
StarFire navigation. This is typically a position
previously surveyed and converted to ITRF08