| Popis: |
Low-cost MEMS sensors are widely used in pedestrian positioning and navigation. However, in long voyages, the zero position of the MEMS sensor will drift and cannot be effectively compensated, becoming the main error. And the traditional foot-strapped navigation uses the MEMS sensor's own information to judge the zero-speed time, and there will be problems such as misjudgment and missed judgment. In view of these two points, according to the change of pedestrian gait, this paper proposes to add heterogeneous multi-sensor assisted by pressure sensor to judge the zero speed time, and design an error correction algorithm to compensate the system error. Compared with traditional methods, this design can significantly improve the navigation and positioning accuracy, and the positioning accuracy can be improved by an order of magnitude. |
