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Flock of Birds®




The Flock can be configured to track from one to four sensors simultaneously with one or more RS-232 interfaces to a host computer. Long range coverage is easily added by "clicking in" our Extended Range Transmitter (ERT/ERC). For high speed operations, add more RS-232 ports and use our Fast Bird Bus (FBB).


  • Head/Hand/Instrument Body Tracking
    • Virtual reality
    • Flight simulation
    • Scientific visualization
    • Medical Imaging
    • Entertainment
  • Biomechanical/Human Factors Analysis
  • Rehabilitative Feedback & Assessment
  • 3D Graphics Control & Manipulation



Pulsed DC magnetic technology
  • Five times less susceptible to distortion caused by nearby metal than AC technology.
Simultaneous Measurement of Multiple Sensors
  • No reduction of measurement rates.
Available in flexible configurations: standard range or extended range
  • Track up to 4 sensors at a range of up to 3.05 meters.
6 degrees-of-freedom
  • Unrestricted range of motion.




* pdficon.gif (224 bytes) Flock of Birds brochure



Degrees of freedom: 6 (Position & Orientation)
Translation range: ±1.2m (±3.05m optional) in any direction
Angular range: ±180° Azimuth & Roll ±90° Elevation
Static Accuracy Position*: 1.8mm RMS
Static Accuracy Orientation*: 0.5° RMS
Static Resolution Position: 0.5mm  @ 30.5cm
Static Resolution Orientation: 0.1° @ 30.5cm
Measurement rate: Up to 144 measurements/second
Outputs: X,Y,Z positional coordinates and orientation angles, rotation matrix, or quaternions
Interface: RS-232C with selectable baud rates to 115,200
Format: Binary
Modes: Point or stream
Transmitter: Standard Transmitter: 9.6cm cube with 3.05M cable, or extended range transmitter option: 30.5cm cube with 6.1m cable
Sensor: 25.4mm x 25.4mm x 20.3mm cube (or optional 3-button mouse) with 3.05M or 10.7M cable
Enclosure: 24cm x 29cm x 6.6cm
Power: User provided or optional external plug-in: US/European version
Environment: Metal objects and stray magnetic fields in the operation volume will degrade performance.
*Accuracy verified over range from 20.3cm to 76.2cm.

Flock of Birds is a general-purpose motion tracker suitable for many applications. Biomedical references in this document are examples of what medical companies have done with Ascension trackers after obtaining all necessary medical certifications. Ascension trackers are not certified for use in medicine without the end user/OEM complying with all pertinent FDA/CE regulatory requirements.
Copyright © 2006 Mindflux (Jasandre Pty. Ltd.). All rights reserved.
info@mindflux.com.au   Ph: (02) 9416 9619   Fax: (02) 9416 9029