Trax AHRS. Always on track.

The first affordable AHRS that stays on track while moving and through magnetic distortion, ideal for unmanned vehicles and navigation systems

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Unmanned vehicles are performing progressively more complex tasks – and requiring increasingly robust and accurate heading and orientation information. But existing attitude and heading reference modules (AHRS) leave too much room for error. They lose heading when encountering magnetic distortion; they suffer from errors when experiencing erratic motion; and often don’t provide accurate heading, even in a static environment. And at more than $2,000 for a MEMS-based AHRS, it’s no wonder AHRS have only been integrated by a select few customers.

The Trax AHRS module provides unparalleled heading accuracy when static, while moving and when encountering magnetic distortion. Trax employs a patented Kalman filtering algorithm that intelligently fuses PNI's patented geomagnetic sensors with gyroscopes and accelerometers to overcome errors due to erratic motion and changes in the local magnetic field. And Trax is priced for commercial use, delivering more reliable heading than AHRS modules that cost twice as much.

So when there’s no room for error, Trax stays on track.

3-axis measurement   3-Axis Measurement   Hard- and soft- iron correction   Hard- and Soft- Iron Correction
Gyro   Dynamic Motion Compensation   Low power   Low Power Consumption
Integrated Processor   Integrated Processor  


Performance Specifications
  Heading Accuracy in presence of magnetic transient and/or dynamic motion 2° rms
    Static Accuracy  0.3° rms
    Resolution 0.1°

   Tilt Accuracy in presence of dynamic motion 2° rms
Static Accuracy 0.3°
    Range ±90 of pitch; ±180 of roll
    Resolution 0.1°

  Maximum Dip Angle   70°
I/O Characteristics
  Communication Interface   RS232 & USB
Mechanical Characteristics
  Dimensions (l × w × h)   3.5 × 4.3 × 1.0 cm
  Weight   7g
Power Requirements
  Supply Voltage   3.6 – 5 VDC
  Current Draw, continuous output
  55 mA
Temperature Range
  Operation   –40°C to +85°C
  Storage   –40°C to +85°C