The Trimble Active Track 360 (AT360) Target is a 360° active target used for robotic surveying. It is designed to be used with the Trimble S3, S6, and S8 Total Stations as well as the Trimble VX Spatial Station, but it can also be integrated with the Trimble V10 Imaging Rover.
AT360 has an integrated 360° active LED ring for tracking and reflective foil for distance measurements. The LED’s emit one of eight unique ID channels which can be selected from the panel to ensure that the correct target is tracked every time on a site where multiple targets are used. This unique Trimble technology also assists in maintaining target lock where adverse tracking conditions may exist and eliminates the potential for false lock onto other reflective surfaces.
The Trimble Active Track 360° Target is powered by a single lithium-ion battery that can last up to 12 hours in normal operating conditions. It can also be powered by an external power supply via cable connection for applications that require permanent installation.
Trimble Active Track 360° Target FAQ
Below is a list of frequently asked questions about Trimble Active Track 360° Target.
What is the prism constant for the Trimble Active Track 360° Target?
The absolute prism constant (true value) for the Trimble Active Track 360° Target is 22.0mm. The prism constant as defined for Leica instruments for Trimble Active Track 360° Target is 56.4mm. For a more detailed explanation on prism constants please see this article.
Can I use the Trimble Active Track 360° Target with a Leica instrument?
Yes, you can use the prism with a Leica instrument as long as you set up the correct prism constant in the instrument settings.
What is the prism constant value that I need to use with a Leica instrument?
In order to use the Trimble Active Track 360° Target with a Leica instrument you should use 56.4mm as the prism constant value.
What is the height offset of the Trimble Active Track 360° Target?
The Trimble Active Track 360° Target height offset is 135.0mm. This is measured from the mounting point to the centre of the prism.