Reversing Detection; Motion Analysis; Omnistar; Rtk - Advanced Navigation Spatial Dual Reference Manual

over flat terrain with as little turning as possible.
4. If Spatial Dual loses a GNSS fix for any extended period of time during the
calibration, the distance travelled will be reset. The distance travelled can be
checked in the odometer configuration dialogue to ensure that it has passed
1000m.
5. Once 1000 metres has been driven, check that the automatic pulse length
check box has become un-ticked and the pulse length value has changed. This
indicates a successfully completed calibration.
10.9

Reversing Detection

Reversing detection is an algorithm that can detect when the vehicle is travelling in
reverse. Knowledge of reverse motion is important when using velocity heading or
odometer input to provide correct results. If Spatial is fitted to a vehicle that does not
reverse or doesn't use velocity heading or odometer, this function should be disabled.
Reversing detection is enabled by default and it can be disabled using the filter
configuration dialogue in Spatial Dual Manager, see section 11.8.3.
10.10

Motion Analysis

Motion analysis is an artificial intelligence algorithm that associates patterns in high
frequency inertial data with the speed of the vehicle. After power on it takes some
time to match patterns with speed before it will become active. Motion analysis only
activates when dead reckoning and is most effective when the vehicle is near
stationary. Motion analysis does not work in all situations and it's primary benefit is in
ground vehicles. It should be enabled in any car application. When active it can be
recognised by 2Hz steps in velocity data. Motion analysis is disabled by default and
can be enabled using the filter configuration dialogue in Spatial Dual Manager, see
section 11.8.3.
10.11

Omnistar

Spatial Dual's internal GNSS receiver supports the Omnistar corrections service. The
Omnistar corrections service allows Spatial Dual to achieve higher positional accuracy
than standard GNSS, see section 8.2. Omnistar is a satellite based service and the
corrections are received using the same GNSS antenna used for positioning, this
means that there is no additional infrastructure equipment required to use Omnistar.
Omnistar is a paid subscription service with a yearly fee. Please contact your local
Omnistar representative for pricing information. The current Omnistar subscription can
be viewed in the GNSS Receiver Information dialogue in Spatial Manager.
10.12

RTK

Spatial Dual's internal GNSS receiver supports RTK GNSS which uses correction data
from a base station to provide significantly higher positional accuracy than standard
GNSS. RTK requires additional infrastructure equipment to receive corrections and is
not practical for all applications. There are three different options for receiving RTK
corrections. For applications where Spatial Dual is connected to a computer that has
access to the internet For applications where Spatial Dual is not connected to a
Spatial Dual Reference Manual
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Version 2.3
12/04/2016