Attitude heading reference system

  • 15-May-2009 10:30 EDT

MicroStrain’s 3DM-GX3-25 attitude heading reference system (AHRS) weighs only 11.5 g and is claimed to be the smallest and lightest AHRS on the market. The unit will enable the development of next-generation wearable tracking devices and smaller, lighter unmanned vehicles and robots. The device combines 12 sensors: tri-axial accelerometers, gyroscopes, and magnetometers with­ three embedded temperature sensors and an onboard microprocessor running a sensor fusion algorithm to provide static and dynamic orientation and inertial measurements. Improved performance under vibration is achieved by over-sampling the sensors at 30 kHz, digitally filtering and performing coning and sculling integrals at 1 kHz, and outputting delta angle and delta velocity. Output rates are user adjustable up to 1 kHz.­
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