Temperature-Dependent Calibration of Triaxial Sensors: Algorithm, Prototype, and Some Results

Abstract

The problem of the calibration of a triaxial sensor considering its dependence on temperature is addressed. The sensor is modeled with a linear dependence on the measurements, but a non-linear dependence on the temperature. A calibration method is presented. The calibration method consists of an iterative algorithm that minimizes a distance, followed by a validation step. A prototype of a calibration system is designed to collect data from multiple triaxial sensors. The calibration algorithm is used to extract information on the temperature dependence of the sensors and on the dependence of the calibration parameters over time. Several sensors are calibrated, and the results are used in a dead reckoning experiment.