@article{ref1,
title="A novel calibration method for gyro-accelerometer asynchronous time in foot-mounted pedestrian navigation system",
journal="Sensors (Basel)",
year="2022",
author="Chen, Tianyu and Yang, Gongliu and Cai, Qingzhong and Wen, Zeyang and Zhang, Wenlong",
volume="22",
number="1",
pages="e209-e209",
abstract="Pedestrian Navigation System (PNS) is one of the research focuses of indoor positioning in GNSS-denied environments based on the MEMS Inertial Measurement Unit (MIMU). However, in the foot-mounted pedestrian navigation system with MIMU or mobile phone as the main carrier, it is difficult to make the sampling time of gyros and accelerometers completely synchronous. The gyro-accelerometer asynchronous time affects the positioning of PNS. To solve this problem, a new error model of gyro-accelerometer asynchronous time is built. The effect of gyro-accelerometer asynchronous time on pedestrian navigation is analyzed. A filtering model is designed to calibrate the gyro-accelerometer asynchronous time, and a zero-velocity detection method based on the rate of attitude change is proposed. The indoor experiment shows that the gyro-accelerometer asynchronous time is estimated effectively, and the positioning accuracy of PNS is improved by the proposed method after compensating for the errors caused by gyro-accelerometer asynchronous time.<p /> <p>Language: en</p>",
language="en",
issn="1424-8220",
doi="10.3390/s22010209",
url="http://dx.doi.org/10.3390/s22010209"
}