High Precision Attitude Sensing and Positioning System SMARTpos 3D ba=
sed on
u-blox ANTARIS=AE GPS Solution.
Use of 4 GPS units and 4 aerials allows 0.2 degree orientation and as=
 little
as 1 cm positioning accuracy.

        http://www.u-blox.com/news/SMARTpos.html

_______________________________________

Synopsis:

NAVSYS use u-blox TIM-LF for their attitude sensing and relative posi=
tioning
system.
This delivers =B1 1cm accuracy in positioning and 0,2=B0 in Heading, =
Role and
Pitch with as much as 10 Hz up-date rate.

Four TIM-LF GPS receivers in a 11 x 11 x 3.5 cm box are connected to =
an
array of four antennas.  Attitude sensing allows measuring the orient=
ation
of an antenna array relative to a reference system, which is GPS in t=
his
case. Roll and pitch can be measured with three or more antennas.

Orientation can be measured with 0.2=B0 accuracy (1m baseline). The r=
elative
positioning accuracy to a second SMARTgps Q16 or a single GPS receive=
r used
as reference station is in the range of =B1 1cm.

Envisaged applications include surveying, precision machine guidance,
building and structure monitoring, and unmanned vehicles and aircraft=
s.

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