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Pedestrian Dead Reckoning (PDR) is a frequently used and established method for indoor positioning of humans with smartphones.The device's motion can be derived from the accelerometer, gyroscope, and magnetometer sensor data in this method.In the acceleration data of the inertial measurement unit (IMU), strides or steps are usually determined using various methods to divide the translational movements of a user into straight-line movement sections.Because of the challenge of separating the acceleration signals into the vertical and the horizontal directions during the movement and excluding the gravitational acceleration, numerous methods approximate the stride length based on key features of the movement or based on user-specific parameters.The novel translation determination method presented in this paper does not require a step detection.Furthermore, it provides a higher accuracy than established stride length determination methods from the literature, and it estimates the translation without the need for user characteristics.The presented method, called "gia", achieves the highest accuracies for the relative stride length error, the root mean square error, and the 95% error for 20 consecutive strides compared to 15 other methods for four benchmark datasets.
Grottke et al. (Wed,) studied this question.