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Inertial low cost navigation with INS error modelling and Kalman filter

: Haid, M.; Link, M.; Loffeld, O.; Marquardt, G.; Melander, S.; Schneider, U.

AMA Fachverband für Sensorik e.V., Wunstorf:
SENSOR 2005. 12th international conference. Proceedings : Nürnberg, Germany, 10 - 12 May 2005
Wunstorf: AMA Service GmbH, 2005
S.479-484 (Vol.1)
Sensor-Kongress <12, 2005, Nürnberg>
Fraunhofer TEG ()
Inertialsensor; Kalman-Filter; tracking; navigation; Objekterkennung; Sensor; Kosten; Wirtschaftlichkeit

In the last few years the development of low-cost intertial sensors has been pushed forward. The dimensions of the newest sensors measure a few millimeters only. At the same time the prices of the sensors decrease being caused by enormously increasing production fifures and the application of low cost micro mechanical silicon structures. This makes applications with low cost systems possible in the meantime.
The Fraunhofer TEG in Stuttgart has demonstrated the possibility of motion-tracing of an object with new low cost miniturised sensors. The main disadvantage of low cost IMUs is the sensor drift, since decreasing size and price are usually paid for with a loss of sensor accuracy. In the past this drawback has more than compensated the advantage of the low cost sensors.
In order to circumvent the problem of lacking sensor accuracy innovative and complex processing algorithms are needed. Here calibration of the sensors is an important factor.
The motivation in developing IMUs for the Fraunhofr TEG is both the need of IMUs in hand- held-devices for engineering applications, medical applications and for low cost systems for the mass market. Marketable products like computer mice and electronic pens are only two of many applications of IMUs in the low cost segment.