Movement Trajectory Correction Using Attitude Data
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices using satellite positioning systems, such as GPS, struggle to generate accurate movement trajectories when the signal is weak or unavailable, leading to inaccuracies in user tracking during activities like cycling or running.
Innovation Solution
A method that involves obtaining first positioning information and attitude information to generate an initial movement trajectory, which is then corrected using second positioning information once the satellite signal is re-established, ensuring both the starting and ending points of the trajectory are accurate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If satellite positioning is used continuously to generate movement trajectory, then positioning accuracy is improved, but power consumption increases
Solution Approach 1:
The system performs satellite positioning at specific intervals rather than continuously. The processor obtains satellite positioning information at predetermined time points during the movement trajectory generation process, reducing overall power consumption while maintaining acceptable positioning accuracy for the movement trajectory.
2Measurement precision
If satellite positioning is used in weak signal areas, then positioning accuracy is improved, but the system becomes unreliable when signals are unavailable
Solution Approach 1:
The system introduces attitude information as an intermediary element to bridge the gap when satellite positioning is unavailable. The processor obtains attitude information from sensors (accelerometer, gyroscope, magnetometer) and combines it with previously obtained satellite positioning information to generate movement trajectory in areas where satellite signals are weak or unavailable, ensuring continuous and reliable trajectory tracking.
Solution Approach 2:
The system changes the parameters used for trajectory generation based on signal availability. When satellite positioning accuracy is insufficient, the processor switches to using attitude information and other sensor data as alternative parameters for calculating movement trajectory, maintaining system reliability across different environmental conditions.
Data Source
AI summary
A movement trajectory generation method includes obtaining first positioning information, obtaining attitude information of a movable platform, generating a movement trajectory of the movable platform according to the first positioning information and the attitude information of the movable platform, obtaining second positioning information, and correcting the movement trajectory according to the second positioning information.